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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 204. Отображено 180.
23-04-2013 дата публикации

Liquid crystal display device

Номер: US0008427624B2
Автор: Chikae Matsui, Hidehiro Sonoda, Noboru Kunimatsu, MATSUI CHIKAE, SONODA HIDEHIRO, KUNIMATSU NOBORU
Принадлежит: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd., MATSUI CHIKAE, SONODA HIDEHIRO, KUNIMATSU NOBORU, HITACHI DISPLAYS LTD, PANASONIC LIQUID CRYSTAL DISPL, HITACHI DISPLAYS, LTD., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.

In an IPS type liquid crystal display device, a light shielding film, a red color filter, an overcoat film, and an alignment film are formed in this order on a counter substrate. However, the alignment film is not formed in a seal portion. When the alignment film is subjected to photo-alignment with ultraviolet radiation, a portion of the overcoat film not covered with the alignment film is degraded by ultraviolet radiation. In order to prevent moisture penetrating from the degraded overcoat film from reaching the light shielding film to thereby alter the light shielding film and from causing the peeling of the light shielding film, the red color filter is disposed below the overcoat film to block the moisture.

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Номер записи: 1
11-02-2014 дата публикации

Liquid crystal display device comprising an alignment film that includes a first alignment film formed of a precursor of polyamide acid or polyamide acid ester and a second alignment film underlying the first alignment film wherein the first alignment film accounts for between 30% and 60% of the alignment film

Номер: US0008648988B2
Автор: Noboru Kunimatsu, Chikae Matsui, Hidehiro Sonoda, Yuko Matsumoto, Shoichi Uchino, Masaki Matsumori, Yasushi Tomioka, KUNIMATSU NOBORU, MATSUI CHIKAE, SONODA HIDEHIRO, MATSUMOTO YUKO, UCHINO SHOICHI, MATSUMORI MASAKI, TOMIOKA YASUSHI
Принадлежит: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd., KUNIMATSU NOBORU, MATSUI CHIKAE, SONODA HIDEHIRO, MATSUMOTO YUKO, UCHINO SHOICHI, MATSUMORI MASAKI, TOMIOKA YASUSHI, HITACHI DISPLAYS LTD, PANASONIC LIQUID CRYSTAL DISPL, HITACHI DISPLAYS, LTD., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.

This invention enables forming a photo-alignment film having a large LC anchoring strength in an IPS type liquid crystal display device. An alignment film is adapted to have a two-layer structure including a photo-alignment film and an alignment film with enhanced film strength. The photo-alignment film is formed of a precursor of polyamide acid ester, 80 percent or more of which is polyamide acid ester including cyclobutane. The alignment film with enhanced film strength is formed of a precursor of polyamide acid. After irradiating the substrate with ultraviolet light for photo-alignment, the substrate is heated. Thus, it is possible to achieve a high LC anchoring strength of the alignment film as the whole for photo-alignment, without degrading the mechanical strength of the alignment film with enhanced film strength.

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Номер записи: 2
18-03-2010 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20100066961A1
Автор: Chikae Matsui, Noboru Kunimatsu, Hidehiro Sonoda, MATSUI CHIKAE, KUNIMATSU NOBORU, SONODA HIDEHIRO
Принадлежит: Hitachi Displays, Ltd.

An alignment film is given a 2-layer structure comprising a photoalignment film that is photoalignable and a low-resistivity alignment film whose resistivity is smaller than that of the photoalignment film. The photoalignment film is formed by a polyimide whose precursor is polyamide acid alkyl ester, the number molecular weight of the photoalignment film is large, and the stability of alignment of the photoalignment film by photoalignment is excellent. The low-resistivity alignment film is formed by a polyimide whose precursor is polyamide acid, the number molecular weight of the low-resistivity alignment film is small, and the resistivity of the low-resistivity alignment film is small. The 2-layer structure alignment film can be maintaining an excellent photoalignment characteristic, so DC afterimages can be controlled.

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Номер записи: 3
27-12-2011 дата публикации

Liquid crystal display device and manufacturing method thereof

Номер: US0008085372B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, Yuko Matsumoto, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, MATSUMOTO YUKO
Принадлежит: Hitachi Displays, Ltd., Panasonic Liquid Crystal Displays Co., Ltd., SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, MATSUMOTO YUKO, HITACHI DISPLAYS LTD, PANASONIC LIQUID CRYSTAL DISPL, HITACHI DISPLAYS, LTD., PANASONIC LIQUID CRYSTAL DISPLAYS CO., LTD.

A liquid crystal display device where both improvement in light transmittance of a liquid crystal display panel having a photo alignment film and suppression of occurrence of after image can be achieved. The liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film is thinner than the first alignment film, and has a thickness ...

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Номер записи: 4
01-01-2019 дата публикации

Liquid crystal display device

Номер: US0010168579B2
Автор: Chikae Matsui, Noboru Kunimatsu, Hidehiro Sonoda, MATSUI CHIKAE, KUNIMATSU NOBORU, SONODA HIDEHIRO, Matsui, Chikae, Kunimatsu, Noboru, Sonoda, Hidehiro
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL, JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.

An alignment film is given a 2-layer structure comprising a photoalignment film that is photoalignable and a low-resistivity alignment film whose resistivity is smaller than that of the photoalignment film. The photoalignment film is formed by a polyimide whose precursor is polyamide acid alkyl ester, the number molecular weight of the photoalignment film is large, and the stability of alignment of the photoalignment film by photoalignment is excellent. The low-resistivity alignment film is formed by a polyimide whose precursor is polyamide acid, the number molecular weight of the low-resistivity alignment film is small, and the resistivity of the low-resistivity alignment film is small. The 2-layer structure alignment film can be maintaining an excellent photoalignment characteristic, so DC afterimages can be controlled.

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Номер записи: 5
28-06-2007 дата публикации

Liquid crystal display device

Номер: US20070148369A1
Автор: Aki Sakai, Noboru Kunimatsu, Hidehiro Sonoda, Shigeru Matsuyama
Принадлежит:

In a liquid crystal display device using a photodecomposition type light orientation film, the deterioration of display performance due to an impurity resulting from a light orientation treatment of the orientation film is suppressed to enable high-quality image display. In the orientation film to which a liquid crystal orientation function is provided, the amount of decomposition product due to the orientation film is 3957.5 ng or less per 100 cm2.

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Номер записи: 6
22-01-2019 дата публикации

Liquid crystal display device

Номер: US0010185183B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, Sonoda, Hidehiro, Matsui, Chikae, Kunimatsu, Noboru
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

A liquid crystal display device includes a TFT substrate and a counter substrate and a liquid crystal layer sandwiched therebetween. A scanning line, a video signal line, a thin film transistor connected to the scanning line and the video signal line, a pixel electrode connected to the thin film transistor, and a counter electrode are formed on the TFT substrate, and a columnar spacer formed on the counter substrate. The pixel and counter electrodes are transparent, and the liquid crystal layer is controlled by an electric field generated between the pixel and counter electrodes. The counter electrode contacts with a metal line having a first part which is extended in parallel with the scanning line and a second part which is extended in parallel with the video signal line, a width of the first part of the metal line being narrower than a width of the scanning line.

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Номер записи: 7
13-01-2011 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20110007233A1
Автор: Chikae Matsui, Hidehiro Sonoda, Noboru Kunimatsu
Принадлежит: Hitachi Displays, Ltd.

In an IPS type liquid crystal display device, a light shielding film, a red color filter, an overcoat film, and an alignment film are formed in this order on a counter substrate. However, the alignment film is not formed in a seal portion. When the alignment film is subjected to photo-alignment with ultraviolet radiation, a portion of the overcoat film not covered with the alignment film is degraded by ultraviolet radiation. In order to prevent moisture penetrating from the degraded overcoat film from reaching the light shielding film to thereby alter the light shielding film and from causing the peeling of the light shielding film, the red color filter is disposed below the overcoat film to block the moisture.

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Номер записи: 8
17-12-2020 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20200393726A1
Автор: Hidehiro Sonoda, Takenori Hirota, Noboru Kunimatsu, Koichi Igeta, SONODA HIDEHIRO, HIROTA TAKENORI, KUNIMATSU NOBORU, IGETA KOICHI, Sonoda, Hidehiro, Hirota, Takenori, Kunimatsu, Noboru, Igeta, Koichi
Принадлежит: Japan Display Inc.

According to one embodiment, a liquid crystal display device includes a first substrate including a first area and a second area, a second substrate opposing the first substrate but not opposing the second area, a sealing part which adheres the first substrate and the second substrate to each other, a liquid crystal layer located between the first substrate and the second substrate and surrounded by the sealing part, an alignment film disposed on the first substrate so as to be in contact with the liquid crystal layer and a terminal located in the second area and connected to an external circuit. In plan view, the alignment film includes an end located between the sealing part and the terminal.

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Номер записи: 9
07-05-2019 дата публикации

Liquid crystal display device and manufacturing method of the same

Номер: US0010281771B2
Автор: Hidehiro Sonoda, Noboru Kunimatsu, Takenori Hirota, Yosuke Hyodo, Yasuo Imanishi, Yasushi Tomioka
Принадлежит: Japan Display Inc.

In a liquid crystal display device having an alignment film subjected to an optical alignment process, the frame area can be reduced while maintaining the reliability of the sealing portion. To achieve this, in the display area, the alignment process is performed with UV light on the alignment film, to form an area in which the alignment film is not formed in the opposing first and second sides, and to form an area in which the amount of UV light irradiation on the alignment film is one fourth or less of the display area in the opposing third and fourth sides. In the first and second sides, the sealing material overlaps the area in which the alignment film is not formed. In the third and fourth sides, the sealing material overlaps the area in which the amount of UV light irradiation is one fourth or less of the display area.

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Номер записи: 10
24-05-2007 дата публикации

Liquid crystal display device

Номер: US20070115412A1
Автор: Aki Tsuchiya, Noboru Kunimatsu, Hidehiro Sonoda, Setsuo Kobayashi
Принадлежит:

The present invention provides a liquid crystal display device to which retardation of a desired value is imparted. In the liquid crystal display device of the invention, orientation films which are oriented by the light radiation possess a retardation value of 1.0 nm or more and an anchoring strength of 1.0×10−3 Jm−2 or more.

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Номер записи: 11
13-08-2002 дата публикации

Liquid crystal display device having a spacer

Номер: US0006433852B1
Автор: Hidehiro Sonoda, Masahito Ohe, Hiroaki Asuma, Shigeru Matsuyama, SONODA HIDEHIRO, OHE MASAHITO, ASUMA HIROAKI, MATSUYAMA SHIGERU
Принадлежит: Hitachi, Ltd., HITACHI LTD, HITACHI, LTD.

To provide a transverse electric field liquid crystal display device which eliminates the leakage of light and suppresses the disturbance of the electric field between the electrodes, thus enabling an image display of high quality, a liquid crystal display device has a liquid crystal panel which provides at least two kinds of color filters FIL(R), FIL(G) . . . of different colors and a black matrix BM interposed between said respective color filters on one substrate SUB2, a group of electrodes PX, CT, CT1, CT2, SD2 . . . for selecting pixels formed on the other substrate SUB1, a liquid crystal layer LC made of a liquid crystal composition sandwiched between the substrates and having a dielectric anisotropy, a polarizing plate POL1, POL2 laminated on an outer surface of at least one of the substrates, and drive means which applies drive voltages for display to a group of the electrodes. The liquid crystal display device further includes spacers SP which bridge a gap defined between opposing ...

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Номер записи: 12
21-07-2015 дата публикации

Liquid crystal display device and method of manufacturing that

Номер: US0009086597B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu
Принадлежит: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first alignment film is a photo alignment film, and a thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy formula (1) and (2): 0 nm Подробнее

Номер записи: 13
28-04-2011 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20110096277A1
Автор: Shoichi UCHINO, Noboru Kunimatsu, Hidehiro Sonoda, Chikae Matsui, Yuko Matsumoto, Masaki Matsumori, Yasushi Tomioka, Jun Tanaka
Принадлежит: Hitachi Displays, Ltd.,

A liquid crystal display device includes: a pair of substrates at least one of which is transparent; a liquid crystal layer disposed between the pair of substrates; an electrode group formed on at least one substrate of the pair of substrates, for applying an electric field to the liquid crystal layer; a plurality of active elements connected to the electrode group; and a liquid crystal alignment film disposed on at least one substrate of the pair of substrates, in which the liquid crystal alignment film, which is formed by a photo-alignment process, contains polyimide formed using tetracarboxylic acid dianhydride and/or diamine each having a specific chemical structure.

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Номер записи: 14
10-07-2018 дата публикации

Liquid crystal display device

Номер: US0010018885B1
Автор: Yasushi Tomioka, Toshimasa Ishigaki, Hidehiro Sonoda, Sumito Ueta, TOMIOKA YASUSHI, ISHIGAKI TOSHIMASA, SONODA HIDEHIRO, UETA SUMITO, Tomioka, Yasushi, Ishigaki, Toshimasa, Sonoda, Hidehiro, Ueta, Sumito
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC

A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole.

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Номер записи: 15
19-05-2015 дата публикации

Liquid crystal display device and manufacturing method thereof

Номер: US0009036120B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, Yuko Matsumoto, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, MATSUMOTO YUKO
Принадлежит: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film.

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Номер записи: 16
30-07-2013 дата публикации

Liquid crystal display device

Номер: US0008497002B2
Автор: Chikae Matsui, Noboru Kunimatsu, Hidehiro Sonoda, MATSUI CHIKAE, KUNIMATSU NOBORU, SONODA HIDEHIRO
Принадлежит: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co. Ltd., MATSUI CHIKAE, KUNIMATSU NOBORU, SONODA HIDEHIRO, HITACHI DISPLAYS LTD, PANASONIC LIQUID CRYSTAL DISPL, HITACHI DISPLAYS, LTD., PANASONIC LIQUID CRYSTAL DISPLAY CO. LTD.

An alignment film is given a 2-layer structure comprising a photoalignment film that is photoalignable and a low-resistivity alignment film whose resistivity is smaller than that of the photoalignment film. The photoalignment film is formed by a polyimide whose precursor is polyamide acid alkyl ester, the number molecular weight of the photoalignment film is large, and the stability of alignment of the photoalignment film by photoalignment is excellent. The low-resistivity alignment film is formed by a polyimide whose precursor is polyamide acid, the number molecular weight of the low-resistivity alignment film is small, and the resistivity of the low-resistivity alignment film is small. The 2-layer structure alignment film can be maintaining an excellent photoalignment characteristic, so DC afterimages can be controlled.

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Номер записи: 17
19-09-2013 дата публикации

Liquid Crystal Display Device and Method of Manufacturing That

Номер: US20130242246A1
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu
Принадлежит: Panasonic Liquid Crystal Display Co., Ltd., Japan Display East, Inc.

A liquid crystal display device including a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first and second alignment films are both made of a photo-decomposition-type material. A film thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy a formula (1) and a formula (2): 1. A liquid crystal display device comprising;a first substrate;a first alignment film formed over the first substrate;a second substrate;a second alignment film formed over the second substrate;a liquid crystal layer sandwiched between the first alignment film and the second alignment film; anda projecting portion formed over the second substrate,wherein the first and second alignment films are comprised of a photo-decomposition-type material, and [{'br': None, 'i': 'd', '0 nm<2<30 nm\u2003\u2003(1)'}, {'br': None, 'i': d', 'd, '2<1\u2003\u2003(2).'}], 'wherein a film thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy a formula (1) and a formula (2)2. A liquid crystal display device according to claim 1 , further comprising a first electrode and a second electrode formed between the first alignment film and the first substrate claim 1 , wherein the first electrode is covered by the first alignment film.3. A liquid crystal display device according to claim 2 , further comprising an insulation film disposed between the second electrode and the liquid crystal layer claim 2 , wherein the insulation film is covered by the first alignment film.4. A liquid crystal display device according to claim 3 , ...

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Номер записи: 18
15-09-2015 дата публикации

Liquid crystal display device comprising an alignment film having a volume resistivity on one side that is greater than a volume resistivity on another side

Номер: US0009134574B2
Автор: Noboru Kunimatsu, Chikae Matsui, Hidehiro Sonoda, Yuko Matsumoto, Shoichi Uchino, Masaki Matsumori, Yasushi Tomioka, KUNIMATSU NOBORU, MATSUI CHIKAE, SONODA HIDEHIRO, MATSUMOTO YUKO, UCHINO SHOICHI, MATSUMORI MASAKI, TOMIOKA YASUSHI
Принадлежит: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

A method for fabricating a liquid crystal display device including a TFT substrate having an alignment film formed thereon, an opposing substrate, and a liquid crystal layer sandwiched therebetween. The alignment film on the TFT substrate includes a photolytic polymer made from a first precursor including cyclobutane, and a non-photolytic polymer made from a second precursor. The method includes the steps of depositing a mixture material including the first precursor and the second precursor in which the second precursor settles more on an upper surface of the TFT substrate than the first precursor, imidizing the mixture material, and irradiating the mixture material with ultraviolet light for photo-alignment, and after irradiating, heating the mixture material to form the alignment film.

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Номер записи: 19
25-10-2012 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20120268702A1
Автор: Yasuo IMANISHI, Hidehiro Sonoda, Noboru Kunimatsu, Yasushi Tomioka, Masaki Matsumori, IMANISHI YASUO, SONODA HIDEHIRO, KUNIMATSU NOBORU, TOMIOKA YASUSHI, MATSUMORI MASAKI
Принадлежит: Hitachi Displays, Ltd.

Provided is a high quality liquid crystal display device adapted to suppress scraping of alignment film and prevent micro light spot fault. The liquid crystal display device comprises: a plurality of columnar spacers and a first alignment film disposed over a first substrate; an insulation film disposed over a second substrate; and a second alignment film disposed over the insulation layer; receiving pedestals for the columnar spacers, wherein: the second alignment film is not formed over the central portion of each of the receiving pedestals; and around the outer peripheral portion of each receiving pedestal, the second alignment film has an inclined thickness distribution which is such that the thickness thereof increases gradually from the central portion to the outside position of the receiving pedestal. 1. A liquid crystal display device comprising: a first substrate; a second substrate disposed in facing relation to the first substrate; a liquid crystal material disposed between the first substrate and the second substrate; a plurality of columnar spacers and a first alignment film disposed over the first substrate; an insulation film disposed over the second substrate; and a second alignment film disposed over the insulation layer; the liquid crystal display device further comprising:receiving pedestals for the columnar spacers, the receiving pedestals being disposed between the insulation layer and the liquid crystal material at positions where the receiving pedestals face the columnar spacers, the receiving materials each being formed of a material different from those for the insulation layer and the second alignment film, wherein:the second alignment film is not formed over the central portion of each of the receiving pedestals; andaround the outer peripheral portion of each receiving pedestal, the second alignment film has an inclined thickness distribution which is such that the thickness thereof increases gradually from the central portion to the ...

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Номер записи: 20
18-04-2013 дата публикации

Manufacturing Method of Display Device

Номер: US20130095720A1
Автор: Yuko Matsumoto, Hidehiro Sonoda, Noboru Kunimatsu
Принадлежит:

A method of manufacturing an organic EL display device that includes an element substrate on which a first organic luminescent material and a second organic luminescent material are formed, includes forming the first organic luminescent material by dripping the first organic luminescent material from an inkjet nozzle on the element substrate while relatively moving the inkjet nozzle and the element substrate in a first direction, and forming the second organic luminescent material by dripping the second organic luminescent material from an inkjet nozzle on the element substrate while relatively moving the inkjet nozzle and the element substrate in a direction perpendicular to the first direction. 1. A method of manufacturing an organic EL display device that includes an element substrate on which a first organic luminescent material and a second organic luminescent material are formed , the method comprising the steps of:forming the first organic luminescent material by dripping the first organic luminescent material from an inkjet nozzle on the element substrate while relatively moving the inkjet nozzle and the element substrate in a first direction; andforming the second organic luminescent material by dripping the second organic luminescent material from an inkjet nozzle on the element substrate while relatively moving the inkjet nozzle and the element substrate in a direction perpendicular to the first direction.2. The organic EL display device manufacturing method according to claim 1 , wherein a third organic luminescent material is formed in the organic EL display device claim 1 , the method further comprising the step of:forming the third organic luminescent material by dripping the third organic luminescent material from an inkjet nozzle on the element substrate while relatively moving the inkjet nozzle and the element substrate in the first direction or in the direction perpendicular to the first direction. This application is a continuation application of ...

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Номер записи: 21
19-05-2011 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20110115999A1
Автор: Shoichi UCHINO, Noboru Kunimatsu, Hidehiro Sonoda, Chikae Matsui, Yuko Matsumoto, Tomio Yaguchi, Toshiki Kaneko, Jun Tanaka
Принадлежит: Hitachi Displays, Ltd.

Disclosed is a manufacturing method of a liquid crystal display device which is a manufacturing method of a liquid crystal display device including a liquid crystal alignment film to which an alignment regulating force is imparted by a photo-alignment treatment, including: a film forming step of forming a film containing a polymer whose main chain is cleaved by irradiation with light; a photo-alignment step of imparting an alignment regulating force to the film formed in the film forming step by irradiation of the film with light in an atmosphere of a temperature lower than 100° C.; and a removing step of removing a low-molecular weight component generated by cleaving the main chain of the polymer through the light irradiation after the light irradiation. Also disclosed is a liquid crystal display device manufactured by the manufacturing method.

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Номер записи: 22
08-05-2008 дата публикации

Liquid crystal display device

Номер: US20080106682A1
Автор: Chikae Matsui, Hidehiro Sonoda
Принадлежит: Hitachi Displays, Ltd.

The present invention compensates for a viewing angle of a VA-mode liquid crystal display device without using an expensive viewing angle enlarging film. In a VA-mode liquid crystal display panel, by radiating light such as ultraviolet rays to a first alignment film, main chains in molecules of the alignment film are arranged to form a first slow axis. By also radiating the light to a second alignment film, a second slow axis is formed. The first slow axis and the second slow axis are arranged to cross each other. When an electric field is applied to a liquid crystal layer, liquid crystal molecules tilt in the direction which crosses the extending direction of projections formed on a substrate. The projections are formed such that the direction along which the liquid crystal molecules tilt and a first slow axis or a second slow axis differ from each other.

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Номер записи: 23
29-12-2020 дата публикации

Liquid crystal display device

Номер: US0010877337B2
Автор: Yasushi Tomioka, Toshimasa Ishigaki, Hidehiro Sonoda, Sumito Ueta, TOMIOKA YASUSHI, ISHIGAKI TOSHIMASA, SONODA HIDEHIRO, UETA SUMITO, Tomioka, Yasushi, Ishigaki, Toshimasa, Sonoda, Hidehiro, Ueta, Sumito
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC

A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole.

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Номер записи: 24
01-08-2017 дата публикации

Liquid crystal display device

Номер: US0009720288B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, Sonoda Hidehiro, Matsui Chikae, Kunimatsu Noboru
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

A liquid crystal display device includes a TFT substrate and a counter substrate and a liquid crystal layer sandwiched therebetween. A scanning line, a video signal line, a thin film transistor connected to the scanning line and the video signal line, a pixel electrode connected to the thin film transistor, and a counter electrode are formed on the TFT substrate, and a columnar spacer formed on the counter substrate. The pixel and counter electrodes are transparent, and the liquid crystal layer is controlled by an electric field generated between the pixel and counter electrodes. The counter electrode contacts with a metal line having a first part which is extended in parallel with the scanning line and a second part which is extended in parallel with the video signal line, a width of the first part of the metal line being narrower than a width of the scanning line.

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Номер записи: 25
18-08-2011 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20110199565A1
Автор: Noboru KUNIMATSU, Chikae Matsui, Hidehiro Sonoda, Yuko Matsumoto, Shoichi Uchino, Masaki Matsumori, Yasushi Tomioka, KUNIMATSU NOBORU, MATSUI CHIKAE, SONODA HIDEHIRO, MATSUMOTO YUKO, UCHINO SHOICHI, MATSUMORI MASAKI, TOMIOKA YASUSHI
Принадлежит: Hitachi Displays, Ltd.

This invention enables forming a photo-alignment film having a large LC anchoring strength in an IPS type liquid crystal display device. An alignment film is adapted to have a two-layer structure including a photo-alignment film and an alignment film with enhanced film strength. The photo-alignment film is formed of a precursor of polyamide acid ester, 80 percent or more of which is polyamide acid ester including cyclobutane. The alignment film with enhanced film strength is formed of a precursor of polyamide acid. After irradiating the substrate with ultraviolet light for photo-alignment, the substrate is heated. Thus, it is possible to achieve a high LC anchoring strength of the alignment film as the whole for photo-alignment, without degrading the mechanical strength of the alignment film with enhanced film strength.

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Номер записи: 26
24-06-2004 дата публикации

Display device

Номер: US20040119661A1
Автор: Noboru Kunimatsu, Hidehiro Sonoda, Setsuo Kobayashi
Принадлежит:

A liquid crystal display device can obviate the generation of an extinction pattern. In the liquid crystal display device, molecules of liquid crystal interposed between respective substrates which are arranged to face each other in an opposed manner are arranged in the vertical direction with respect to the substrate at the time of applying no voltage. The liquid crystal display device further includes a plurality of protruding portions which are scattered on a surface of one substrate which is brought into contact with the liquid crystal in respective pixel regions, and projecting portions or recessed portions which are provided about these protruding portions, the projecting portions or the recessed portions being substantially aligned with the directions of respective polarization axes of one polarizer which is provided to a surface of one substrate at a side opposite to a liquid crystal side and of another polarizer which is provided to a surface of another substrate at a side opposite ...

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Номер записи: 27
10-11-2016 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20160327843A1
Автор: Yasushi Tomioka, Yosuke Hyodo, Hidehiro Sonoda, Noboru Kunimatsu, TOMIOKA YASUSHI, HYODO YOSUKE, SONODA HIDEHIRO, KUNIMATSU NOBORU, Tomioka Yasushi, Hyodo Yosuke, Sonoda Hidehiro, Kunimatsu Noboru
Принадлежит:

In a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment film material can easily flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole. 1. A display device comprising:a first substrate including a first electrode, an organic film formed on the first electrode, and a second electrode electrically connected to the first electrode through a through hole that is formed in the organic film,wherein the through hole has a first portion and a second portion which is close to the first substrate than the first portion and arranged between the first substrate and the first portion,wherein a first taper angle of the first portion is smaller than a second taper angle of the second portion, andwherein a first diameter of a top of the first portion is greater than a second diameter of a top of the second portion.2. The display device according to claim 1 ,wherein the second electrode is overlapped with at least a portion of the first electrode, in a plan view.3. The display device according to claim 1 ,wherein the through hole is overlapped with at least a portion of the first electrode, in a plan view.4. The display device according to claim 1 ,wherein the organic film is an insulator between the first electrode and the second electrode.5. The ...

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Номер записи: 28
08-04-2014 дата публикации

Liquid crystal display device and manufacturing method thereof

Номер: US0008692970B2
Автор: Shoichi Uchino, Noboru Kunimatsu, Hidehiro Sonoda, Chikae Matsui, Yuko Matsumoto, Tomio Yaguchi, Toshiki Kaneko, Jun Tanaka, UCHINO SHOICHI, KUNIMATSU NOBORU, SONODA HIDEHIRO, MATSUI CHIKAE, MATSUMOTO YUKO, YAGUCHI TOMIO, KANEKO TOSHIKI, TANAKA JUN
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., UCHINO SHOICHI, KUNIMATSU NOBORU, SONODA HIDEHIRO, MATSUI CHIKAE, MATSUMOTO YUKO, YAGUCHI TOMIO, KANEKO TOSHIKI, TANAKA JUN, JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL, JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.

Disclosed is a manufacturing method of a liquid crystal display device which is a manufacturing method of a liquid crystal display device including a liquid crystal alignment film to which an alignment regulating force is imparted by a photo-alignment treatment, including: a film forming step of forming a film containing a polymer whose main chain is cleaved by irradiation with light; a photo-alignment step of imparting an alignment regulating force to the film formed in the film forming step by irradiation of the film with light in an atmosphere of a temperature lower than 100° C.; and a removing step of removing a low-molecular weight component generated by cleaving the main chain of the polymer through the light irradiation after the light irradiation. Also disclosed is a liquid crystal display device manufactured by the manufacturing method.

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Номер записи: 29
26-10-2021 дата публикации

Liquid crystal display device

Номер: US0011156875B2
Автор: Noboru Kunimatsu, Chikae Matsui, Hidehiro Sonoda, Yuko Matsumoto, Shoichi Uchino, Masaki Matsumori, Yasushi Tomioka, KUNIMATSU NOBORU, MATSUI CHIKAE, SONODA HIDEHIRO, MATSUMOTO YUKO, UCHINO SHOICHI, MATSUMORI MASAKI, TOMIOKA YASUSHI, Kunimatsu, Noboru, Matsui, Chikae, Sonoda, Hidehiro, Matsumoto, Yuko, Uchino, Shoichi, Matsumori, Masaki, Tomioka, Yasushi
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

A liquid crystal display device includes a TFT substrate having a first alignment film and an opposing substrate having a second alignment film with liquid crystals sandwiched therebetween. One of the first and second alignment films, comprises a first polyimide produced via polyamide acid ester containing cyclobutane as a precursor and a second polyimide produced via polyamide acid as a precursor. The polyamide acid has a higher polarity than that of the polyamide acid ester. The one of the first and second alignment films is responsive to photo-alignment. A first side of the one of the first and second alignment films is adjacent to the liquid crystals, and a second side thereof is closer to one of the TFT substrate and the counter substrate than the first side. The first side contains more of the first polyimide and less of the second polyimide than the second side.

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Номер записи: 30
13-11-2014 дата публикации

Liquid Crystal Display Device

Номер: US20140333885A1
Автор: Yasushi Tomioka, Noboru Kunimatsu, Hidehiro Sonoda, Yasuo Imanishi, Koichi Igeta, TOMIOKA YASUSHI, KUNIMATSU NOBORU, SONODA HIDEHIRO, IMANISHI YASUO, IGETA KOICHI
Принадлежит:

A display device includes a first substrate having a plurality of TFTs, a passivation film, and a plurality of pixel electrodes, and a second substrate arranged with a gap with the first substrate. The passivation film has a plurality of contact holes, and the plurality of pixel electrodes are connected to the plurality of TFTs via the plurality of contact holes. The second substrate has a plurality of columnar spacers for ensuring the gap with the first substrate, and a plurality of columnar projections for misalignment prevention formed at positions corresponding to the contact holes. The number of the plurality of columnar projections is less than the number of the plurality of columnar spacers. 1. A display device , comprising:a first substrate having a plurality of TFTs, a passivation film, and a plurality of pixel electrodes; anda second substrate arranged with a gap with the first substrate;wherein the passivation film has a plurality of contact holes, and the plurality of pixel electrodes are connected to the plurality of TFTs via the plurality of contact holes;wherein the second substrate has a plurality of columnar spacers for ensuring the gap with the first substrate, and a plurality of columnar projections for misalignment prevention formed at positions corresponding to the contact holes; andwherein the number of the plurality of columnar projections is less than the number of the plurality of columnar spacers.2. A display device according to claim 1 , wherein the passivation film includes an organic insulation film.3. A display device according to claim 2 , wherein the passivation film includes an inorganic insulating film.412. A display device according to claim 1 , wherein a difference Δh between the height h of one of the columnar projections and height h of one of the columnar spacers is equal to or less than depth z of the contact hole.51. A display device according to claim 1 , wherein height h of one of the columnar projections is larger tan the ...

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Номер записи: 31
19-02-2015 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20150049271A1
Автор: Shoichi Uchino, Noboru Kunimatsu, Hidehiro Sonoda, Chikae Matsui, Yuko Matsumoto, Masaki Matsumori, Yasushi Tomioka, Jun Tanaka, UCHINO SHOICHI, KUNIMATSU NOBORU, SONODA HIDEHIRO, MATSUI CHIKAE, MATSUMOTO YUKO, MATSUMORI MASAKI, TOMIOKA YASUSHI, TANAKA JUN
Принадлежит:

A liquid crystal display device includes: a pair of substrates at least one of which is transparent; a liquid crystal layer disposed between the pair of substrates; an electrode group formed on at least one substrate of the pair of substrates, for applying an electric field to the liquid crystal layer; a plurality of active elements connected to the electrode group; and a liquid crystal alignment film disposed on at least one substrate of the pair of substrates, in which the liquid crystal alignment film, which is formed by a photo-alignment process, contains polyimide formed using tetracarboxylic acid dianhydride and/or diamine each having a specific chemical structure. 2. The liquid crystal display device according to claim 1 , wherein any alkyl group of the dialkylamino group represents a dialkylamino group having a carbon number of 3 or less.3. The liquid crystal display device according to claim 1 , wherein the dialkylamino group is a dimethylamino group.4. The liquid crystal display device according to claim 1 , wherein an interface tilt angle between the liquid crystal layer and the liquid crystal alignment film is set to 1 degree or less.7. The liquid crystal display device according to claim 1 , wherein the polyimide is formed by imidizing a polyimide precursor formed using the at least one kind of tetracarboxylic acid dianhydride selected from the compound group A claim 1 , wherein 50% to 95% of a total amount of the polyimide precursor is imidized to form the polyimide.9. The liquid crystal alignment film varnish according to claim 8 , wherein any alkyl group of the dialkylamino group represents a dialkylamino group having a carbon number of 3 or less.10. The liquid crystal alignment film varnish according to claim 8 , wherein the dialkylamino group is a dimethylamino group. This application is a continuation application of U.S. application Ser. No. 12/908,313, filed Oct. 20, 2010, the contents of which are incorporated herein by reference.The present ...

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Номер записи: 32
21-04-2016 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20160109771A1
Автор: Yasushi Tomioka, Yosuke Hyodo, Hidehiro Sonoda, Noboru Kunimatsu
Принадлежит:

in a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment film material can easily flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole. 1. A display device comprising:a first substrate including a first electrode, an organic film formed over the first electrode, and a TFT electrically connected to the first electrode,wherein a through hole is formed in the organic film, and arranged over the first electrode,wherein a diameter of an upper portion of the through hole is greater than a diameter of a lower portion of the through hole, andwherein a taper angle of the upper portion of the through hole is smaller than a taper angle of the lower portion which is arranged between the upper portion and the first substrate.2. The display device according to claim 1 , further comprising a second electrode formed over the organic film claim 1 ,wherein the second electrode is overlapped with at least a portion of the first electrode.3. The display device according to claim 2 ,wherein the second electrode is electrically connected to the first electrode.4. The display device according to claim 1 ,wherein the through hole formed in the organic film and has a depth D, a taper angle at a depth of D/6 from the upper portion is smaller than a taper angle ...

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Номер записи: 33
01-05-2007 дата публикации

Liquid crystal display device with one pixel electrode having a plurality of generally circular patterns in each pixel region

Номер: US0007212271B2
Автор: Hidehiro Sonoda, Junji Tanno, SONODA HIDEHIRO, TANNO JUNJI
Принадлежит: Hitachi Displays, Ltd., HITACHI DISPLAYS LTD, HITACHI DISPLAYS, LTD.

A liquid crystal display device comprising electrodes of the one side formed on the pixel regions on the surface of one of the substrates arranged facing each other with the liquid crystals interposed therebetween and on the side of the liquid crystals, and electrodes of the other side formed on at least the pixel regions on the surface of the other substrate on the side of the liquid crystals, wherein each electrode of the one side has a shape of a plurality of circular patterns or patterns close to circles that are arranged in contact with each other, whereby a region where the electrode of the one side is not formed is surrounded by the circular patterns or patterns close to circles of an odd number of three or more, and projections are formed on the surface of the other substrate on the side of the liquid crystals at portions facing nearly the centers of the circular patterns or the patterns close to circles.

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Номер записи: 34
05-04-2012 дата публикации

Liquid Crystal Display Device And Manufacturing Method Thereof

Номер: US20120081647A1
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, Yuko Matsumoto, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, MATSUMOTO YUKO
Принадлежит: Individual

A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film.

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Номер записи: 35
12-07-2022 дата публикации

Varnish for photo alignment film and liquid crystal display device

Номер: US0011384204B2
Автор: Hidehiro Sonoda, Takenori Hirota, Yasushi Tomioka, Noboru Kunimatsu
Принадлежит: Japan Display Inc.

According to one embodiment, a varnish for a photo alignment film includes an imidization promotor and a first polyamic acid-based compound in an organic solvent. The first polyamic acid-based compound is a polyamic acid or a polyamic acid ester. The imidization promotor has skeleton containing no primary amino group and no secondary amino group. The first polyamic acid-based compound has terminal skeletons containing no primary amino group.

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Номер записи: 36
28-12-2010 дата публикации

Method of manufacturing liquid crystal display device

Номер: US0007859625B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU
Принадлежит: Hitachi Displays, Ltd., HITACHI DISPLAYS LTD, HITACHI DISPLAYS, LTD.

A liquid crystal display device which can reduce or eliminate a display defect is provided. The liquid crystal display device includes a first alignment film formed on one of the pair of substrates; a second alignment film formed on another of the pair of substrates; first projecting portions which are provided to the first alignment film and project into the liquid crystal layer by first constitutional members which constitute a layer below the first alignment film; and second projecting portions which are provided to the second alignment film, face the first projecting portions, and project into the liquid crystal layer by second constitutional members which constitute a layer below the second alignment film, the first projecting portion being set lower than the second projecting portion, and an area of an upper surface of the first projecting portion being set smaller than an area of an upper surface of the second projecting portion. The first alignment film is made of a photo-decomposition-type ...

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Номер записи: 37
05-02-2019 дата публикации

Liquid crystal display device and method of manufacturing that

Номер: US0010197860B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first alignment film is a photo alignment film, and a thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy formula (2), d2 Подробнее

Номер записи: 38
16-03-2021 дата публикации

Varnish for photo alignment film and liquid crystal display device

Номер: US0010947345B2
Автор: Hidehiro Sonoda, Takenori Hirota, Yasushi Tomioka, Noboru Kunimatsu, SONODA HIDEHIRO, HIROTA TAKENORI, TOMIOKA YASUSHI, KUNIMATSU NOBORU, Sonoda, Hidehiro, Hirota, Takenori, Tomioka, Yasushi, Kunimatsu, Noboru
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC

According to one embodiment, a varnish for a photo alignment film includes an imidization promotor and a first polyamic acid-based compound in an organic solvent. The first polyamic acid-based compound is a polyamic acid or a polyamic acid ester. The imidization promotor has skeleton containing no primary amino group and no secondary amino group. The first polyamic acid-based compound has terminal skeletons containing no primary amino group.

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Номер записи: 39
09-11-2021 дата публикации

Liquid crystal display device having alignment films

Номер: US0011169416B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first film is a photo alignment film, and a thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy formula (2),d2 Подробнее

Номер записи: 40
14-11-2017 дата публикации

Liquid crystal display device

Номер: US0009817288B2
Автор: Yasushi Tomioka, Toshimasa Ishigaki, Hidehiro Sonoda, Sumito Ueta, TOMIOKA YASUSHI, ISHIGAKI TOSHIMASA, SONODA HIDEHIRO, UETA SUMITO, Tomioka Yasushi, Ishigaki Toshimasa, Sonoda Hidehiro, Ueta Sumito
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC

A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole.

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Номер записи: 41
19-07-2022 дата публикации

Liquid crystal display device and manufacturing method thereof

Номер: US0011391993B2
Автор: Shoichi Uchino, Noboru Kunimatsu, Hidehiro Sonoda, Chikae Matsui, Yuko Matsumoto, Tomio Yaguchi, Toshiki Kaneko, Jun Tanaka
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.

Disclosed is a manufacturing method of a liquid crystal display device which is a manufacturing method of a liquid crystal display device including a liquid crystal alignment film to which an alignment regulating force is imparted by a photo-alignment treatment, including: a film forming step of forming a film containing a polymer whose main chain is cleaved by irradiation with light; a photo-alignment step of imparting an alignment regulating force to the film formed in the film forming step by irradiation of the film with light in an atmosphere of a temperature lower than 100° C.; and a removing step of removing a low-molecular weight component generated by cleaving the main chain of the polymer through the light irradiation after the light irradiation. Also disclosed is a liquid crystal display device manufactured by the manufacturing method.

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Номер записи: 42
27-10-2015 дата публикации

Liquid crystal display device having an alignment film produced via polyamide acid ester and polyamide acid as precursors

Номер: US0009170458B2
Автор: Noboru Kunimatsu, Chikae Matsui, Hidehiro Sonoda, Yuko Matsumoto, Shoichi Uchino, Masaki Matsumori, Yasushi Tomioka, KUNIMATSU NOBORU, MATSUI CHIKAE, SONODA HIDEHIRO, MATSUMOTO YUKO, UCHINO SHOICHI, MATSUMORI MASAKI, TOMIOKA YASUSHI
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL, JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.

A liquid crystal display device includes a TFT substrate having a first alignment film and an opposing substrate having a second alignment film with liquid crystals sandwiched therebetween. One of the first and second alignment films, comprises a first polyimide produced via polyamide acid ester containing cyclobutane as a precursor and a second polyimide produced via polyamide acid as a precursor. The polyamide acid has a higher polarity than that of the polyamide acid ester. The one of the first and second alignment films is responsive to photo-alignment. A first side of the one of the first and second alignment films is adjacent to the liquid crystals, and a second side thereof is closer to one of the TFT substrate and the counter substrate than the first side. The first side contains more of the first polyimide and less of the second polyimide than the second side.

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Номер записи: 43
14-11-2013 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20130300967A1
Автор: Chikae Matsui, Noboru Kunimatsu, Hidehiro Sonoda
Принадлежит: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., HITACHI DISPLAYS, LTD.

An alignment film is given a 2-layer structure comprising a photoalignment film that is photoalignable and a low-resistivity alignment film whose resistivity is smaller than that of the photoalignment film. The photoalignment film is formed by a polyimide whose precursor is polyamide acid alkyl ester, the number molecular weight of the photoalignment film is large, and the stability of alignment of the photoalignment film by photoalignment is excellent. The low-resistivity alignment film is formed by a polyimide whose precursor is polyamide acid, the number molecular weight of the low-resistivity alignment film is small, and the resistivity of the low-resistivity alignment film is small. The 2-layer structure alignment film can be maintaining an excellent photoalignment characteristic, so DC afterimages can be controlled. 3. The liquid crystal display device according to claim 1 , wherein the imidization ratio of the first alignment film is greater than the imidization ratio of the second alignment film.4. The liquid crystal display device according to claim 1 , wherein the second alignment film is photoconductive.5. The liquid crystal display device according to claim 2 , wherein the imidization ratio of the first alignment film is greater than the imidization ratio of the second alignment film.6. The liquid crystal display device according to claim 2 , wherein the second alignment film is photoconductive. This application is a continuation application of U.S. application Ser. No. 12/560,770 filed Sep. 16, 2009, the contents of which are incorporated herein by reference.The present application claims priority from Japanese application serial No. 2008-235900, filed on Sep. 16, 2008, the content of which is hereby incorporated by reference into this application.1. Technical FieldThe present invention pertains to a liquid crystal display device and particularly relates to a liquid crystal display device that is equipped with a liquid crystal display panel where ...

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Номер записи: 44
23-04-2019 дата публикации

Liquid crystal display device and manufacturing method thereof

Номер: US0010268081B2
Автор: Shoichi Uchino, Noboru Kunimatsu, Hidehiro Sonoda, Chikae Matsui, Yuko Matsumoto, Tomio Yaguchi, Toshiki Kaneko, Jun Tanaka, UCHINO SHOICHI, KUNIMATSU NOBORU, SONODA HIDEHIRO, MATSUI CHIKAE, MATSUMOTO YUKO, YAGUCHI TOMIO, KANEKO TOSHIKI, TANAKA JUN, Uchino, Shoichi, Kunimatsu, Noboru, Sonoda, Hidehiro, Matsui, Chikae, Matsumoto, Yuko, Yaguchi, Tomio, Kaneko, Toshiki, Tanaka, Jun
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display, Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL, JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY, CO., LTD.

Disclosed is a manufacturing method of a liquid crystal display device which is a manufacturing method of a liquid crystal display device including a liquid crystal alignment film to which an alignment regulating force is imparted by a photo-alignment treatment, including: a film forming step of forming a film containing a polymer whose main chain is cleaved by irradiation with light; a photo-alignment step of imparting an alignment regulating force to the film formed in the film forming step by irradiation of the film with light in an atmosphere of a temperature lower than 100° C.; and a removing step of removing a low-molecular weight component generated by cleaving the main chain of the polymer through the light irradiation after the light irradiation. Also disclosed is a liquid crystal display device manufactured by the manufacturing method.

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Номер записи: 45
15-02-2018 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20180046047A1
Автор: Yasushi TOMIOKA, Toshimasa ISHIGAKI, Hidehiro Sonoda, Sumito UETA
Принадлежит:

A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole. 1. A liquid crystal display device comprising: a thin film transistor having a source electrode,', 'an organic insulating film formed on the thin film transistor and having a through hole which has a side wall,', 'a common electrode formed on the organic insulating film,', 'an interlayer insulating film formed on the common electrode, and', 'a pixel electrode formed on the interlayer insulating film and electrically connected to the source electrode via the through-hole,, 'a transistor substrate including;'}a counter substrate having a light shielding film, anda liquid crystal layer sandwiched between the transistor substrate and the counter substrate,wherein the pixel electrode covers the side wall of the through-hole, andwherein the pixel electrode has a slit including a first end, and the first end is overlapped with the side wall.2. The liquid crystal display device according to claim 1 , wherein the pixel electrode has a slit.3. The liquid crystal display device according to claim 2 , wherein the slit overlaps with a part of the side wall.4. The liquid crystal display device ...

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Номер записи: 46
11-11-2014 дата публикации

Display device comprising a recessed portion that is formed with at least one convex portion at a bottom of the recessed portion and wherein the recessed portion faces a columnar spacer

Номер: US0008885136B2
Автор: Yosuke Hyodo, Koichi Igeta, Toshiki Kaneko, Noboru Kunimatsu, Hidehiro Sonoda, HYODO YOSUKE, IGETA KOICHI, KANEKO TOSHIKI, KUNIMATSU NOBORU, SONODA HIDEHIRO
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC, JAPAN DISPLAY INC.

A display device includes a first substrate having organic and alignment films, a second substrate adhered to the first substrate by a sealant which surrounds a pixel region, a columnar spacer formed on the second substrate defining a distance between the first substrate and the second substrate, and a recessed portion formed in the organic film of the pixel region, the recessed portion facing to the columnar spacer. The recessed portion has a convex portion at a bottom of the recessed portion, and a height of a top of the convex portion from the first substrate is lower than a height of an upper surface of the organic film from the first substrate. A thickness of an alignment film on the convex portion is smaller than a thickness of the bottom of the recessed portion, and a top of the columnar spacer is in contact with the convex portion.

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Номер записи: 47
26-12-2023 дата публикации

Liquid crystal display device

Номер: US0011852923B2
Автор: Takenori Hirota, Yasuhiro Kanaya, Hidehiro Sonoda, Toshiki Kaneko
Принадлежит: Japan Display Inc.

A reliability of seal portion of a liquid crystal display device can be improved by the following structure. A liquid crystal display device includes: a TFT substrate which includes a display region and a terminal part, and has an inorganic insulating film formed on an organic passivation film and an alignment film formed over the inorganic insulating film; a counter substrate, the TFT substrate and the counter substrate bonded together by a sealing material formed at a seal part surrounding the display region; and a liquid crystal sealed inside. At the seal part, a transparent conductive oxide film is formed between the inorganic insulating film and the alignment film. The transparent conductive oxide film exists inside an edge of the TFT substrate and hence, the edge of the TFT substrate is free of the transparent conductive oxide film.

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Номер записи: 48
28-10-2014 дата публикации

Liquid crystal display device and manufacturing method thereof

Номер: US0008873006B2
Автор: Noboru Kunimatsu, Masaki Matsumori, Hidehiro Sonoda, Yasushi Tomioka, Toshiki Kaneko, KUNIMATSU NOBORU, MATSUMORI MASAKI, SONODA HIDEHIRO, TOMIOKA YASUSHI, KANEKO TOSHIKI
Принадлежит: Japan Display Inc., KUNIMATSU NOBORU, MATSUMORI MASAKI, SONODA HIDEHIRO, TOMIOKA YASUSHI, KANEKO TOSHIKI, JAPAN DISPLAY INC, JAPAN DISPLAY INC.

The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film.

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Номер записи: 49
20-12-2016 дата публикации

Liquid crystal display device

Номер: US0009523897B2
Автор: Yosuke Hyodo, Yasushi Tomioka, Noboru Kunimatsu, Hidehiro Sonoda, Yasuo Imanishi, Takenori Hirota, HYODO YOSUKE, TOMIOKA YASUSHI, KUNIMATSU NOBORU, SONODA HIDEHIRO, IMANISHI YASUO, HIROTA TAKENORI, Hyodo Yosuke, Tomioka Yasushi, Kunimatsu Noboru, Sonoda Hidehiro, Imanishi Yasuo, Hirota Takenori
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC

An interlayer insulating film 109 made of SiN is formed on a counter electrode, and a pixel electrode 110 having a slit 1101 is formed on the interlayer insulating film 109. A through-hole 111 which connects the pixel electrode 110 and the source electrode of a TFT has a large opening on the upper side, a small opening on the lower side, and an inner wall extending between the large opening and the small opening. The pixel electrode 110 covers the through-hole 111 on an inner side of the pixel of the through-hole 111 but does not cover a periphery of the large opening of the through-hole on an outer side of the through-hole 111. Consequently, an orientation film material can easily flow from a starting point given by an end portion of the pixel electrode into the inside of the through-hole.

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Номер записи: 50
04-12-2018 дата публикации

Liquid crystal display device

Номер: US0010146096B2
Автор: Yasushi Tomioka, Toshimasa Ishigaki, Hidehiro Sonoda, Sumito Ueta, TOMIOKA YASUSHI, ISHIGAKI TOSHIMASA, SONODA HIDEHIRO, UETA SUMITO, Tomioka, Yasushi, Ishigaki, Toshimasa, Sonoda, Hidehiro, Ueta, Sumito
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC

A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole.

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Номер записи: 51
08-07-2021 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20210208442A1
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu
Принадлежит:

A liquid crystal display device includes a TFT substrate and a counter substrate and a liquid crystal layer sandwiched therebetween. A scanning line, a video signal line, a thin film transistor connected to the scanning line and the video signal line, a pixel electrode connected to the thin film transistor, and a counter electrode are formed on the TFT substrate, and a columnar spacer formed on the counter substrate. The pixel and counter electrodes are transparent, and the liquid crystal layer is controlled by an electric field generated between the pixel and counter electrodes. The counter electrode contacts with a metal line having a first part which is extended in parallel with the scanning line and a second part which is extended in parallel with the video signal line, a width of the first part of the metal line being narrower than a width of the scanning line. 1. A liquid crystal display device comprising:a TFT substrate and a counter substrate;a liquid crystal layer sandwiched between the TFT substrate and the counter substrate;a first metal line on the TFT substrate;a second metal line intersecting with the first metal line;a thin film transistor connected to the first metal line and the second metal line;an organic passivation film formed over the first metal line, the second metal line and the thin film transistor;a pixel electrode connected to the thin film transistor on the organic passivation film;a counter electrode formed opposite to the pixel electrode with an interlayer insulation film;a third metal line formed on the counter electrode along the first metal line;a columnar spacer formed on the counter substrate;a first alignment film covering the third metal line on the TFT substrate; anda second alignment film covering the columnar spacer on the counter substrate,wherein the pixel electrode and the counter electrode are transparent,the counter electrode electrically connected to the third metal line,the first alignment film and the second alignment ...

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Номер записи: 52
16-05-2023 дата публикации

Liquid crystal display device

Номер: US0011650467B2
Автор: Yasushi Tomioka, Toshimasa Ishigaki, Hidehiro Sonoda, Sumito Ueta
Принадлежит: Japan Display Inc.

To prevent a phenomenon that an alignment film material is difficult to flow into the through-hole where a diameter of a through-hole for connecting between a pixel electrode and a source electrode is reduced. A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole ...

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Номер записи: 53
29-11-2012 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF MANUFACTURING THAT

Номер: US20120300145A1
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU
Принадлежит: Individual

A liquid crystal display device includes first and second substrates with a liquid crystal layer therebetween. A planer electrode and a plurality of overlapping linear electrodes are formed on the first substrate with an insulation film disposed between the planar electrode and the plurality of linear electrodes. A projecting portion is formed on one of the first and second substrates and an alignment film is formed on each of the first and second substrates and on the projection portion. The alignment films are made of a photo-decomposition-type material, and a film thickness of the alignment film on the projecting portion and a film thickness of a portion of the alignment film facing the projecting portion satisfy a predetermined relationship.

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Номер записи: 54
02-06-2020 дата публикации

Liquid crystal display device and method of manufacturing that

Номер: US0010670922B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, Sonoda, Hidehiro, Matsui, Chikae, Kunimatsu, Noboru
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first alignment film is a photo alignment film, and a thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy formula (2), d2 Подробнее

Номер записи: 55
31-10-2017 дата публикации

Liquid crystal display device and method of manufacturing that

Номер: US0009804445B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, Sonoda Hidehiro, Matsui Chikae, Kunimatsu Noboru
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first alignment film is a photo alignment film, and a thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy formula (1) and (2): 0 nm Подробнее

Номер записи: 56
05-02-2019 дата публикации

Liquid crystal display device and manufacturing method thereof

Номер: US0010197857B2
Автор: Noboru Kunimatsu, Masaki Matsumori, Hidehiro Sonoda, Yasushi Tomioka, Toshiki Kaneko, KUNIMATSU NOBORU, MATSUMORI MASAKI, SONODA HIDEHIRO, TOMIOKA YASUSHI, KANEKO TOSHIKI, Kunimatsu, Noboru, Matsumori, Masaki, Sonoda, Hidehiro, Tomioka, Yasushi, Kaneko, Toshiki
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC

The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film.

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Номер записи: 57
15-11-2016 дата публикации

Liquid crystal display device and manufacturing method thereof

Номер: US0009494826B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, Yuko Matsumoto, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, MATSUMOTO YUKO, Sonoda Hidehiro, Matsui Chikae, Kunimatsu Noboru, Matsumoto Yuko
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film.

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Номер записи: 58
30-04-2015 дата публикации

Liquid Crystal Display Device

Номер: US20150116624A1
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU
Принадлежит:

A liquid crystal display device includes a TFT substrate and a counter substrate and a liquid crystal layer sandwiched therebetween. A scanning line, a video signal line, a thin film transistor connected to the scanning line and the video signal line, a pixel electrode connected to the thin film transistor, and a counter electrode are formed on the TFT substrate, and a columnar spacer formed on the counter substrate. The pixel and counter electrodes are transparent, and the liquid crystal layer is controlled by an electric field generated between the pixel and counter electrodes. The counter electrode contacts with a metal line having a first part which is extended in parallel with the scanning line and a second part which is extended in parallel with the video signal line, a width of the first part of the metal line being narrower than a width of the scanning line. 1. A liquid crystal display device comprising:a TFT substrate and a counter substrate;a liquid crystal layer sandwiched between the TFT substrate and the counter substrate;a scanning line, a video signal line, a thin film transistor connected to the scanning line and the video signal line, a pixel electrode connected to the thin film transistor, and a counter electrode formed on the TFT substrate; anda columnar spacer formed on the counter substrate;wherein the pixel electrode and the counter electrode are transparent, and the liquid crystal layer is controlled by an electric field generated between the pixel electrode and the counter electrode;wherein the counter electrode contacts with a metal line, and the metal line includes a first part which is extended in parallel with the scanning line and a second part which is extended in parallel with the video signal line, and a width of the first part of the metal line is narrower than a width of the scanning line; andwherein the columnar spacer is overlapped with an intersection of the scanning line and the video signal line and an intersection of the first ...

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Номер записи: 59
30-04-2015 дата публикации

Liquid Crystal Display Device

Номер: US20150116617A1
Автор: Noboru Kunimatsu, Chikae Matsui, Hidehiro Sonoda, Yuko Matsumoto, Shoichi Uchino, Masaki Matsumori, Yosushi Tomioka, KUNIMATSU NOBORU, MATSUI CHIKAE, SONODA HIDEHIRO, MATSUMOTO YUKO, UCHINO SHOICHI, MATSUMORI MASAKI, TOMIOKA YOSUSHI
Принадлежит:

A liquid crystal display device includes a TFT substrate having a first alignment film and an opposing substrate having a second alignment film with liquid crystals sandwiched therebetween. One of the first and second alignment films, comprises a first polyimide produced via polyamide acid ester containing cyclobutane as a precursor and a second polyimide produced via polyamide acid as a precursor. The polyamide acid has a higher polarity than that of the polyamide acid ester. The one of the first and second alignment films is responsive to photo-alignment. A first side of the one of the first and second alignment films is adjacent to the liquid crystals, and a second side thereof is closer to one of the TFT substrate and the counter substrate than the first side. The first side contains more of the first polyimide and less of the second polyimide than the second side. 1. A liquid crystal display device comprising:a TFT substrate in which a first alignment film is formed over a pixel including a pixel electrode and a TFT;an opposing substrate which faces the TFT substrate and in which a second alignment film is formed;liquid crystals sandwiched between the first alignment film of the TFT substrate and the second alignment film of the opposing substrate;wherein one of the first alignment film of the TFT substrate and the second alignment film of the opposing substrate, comprises a first polyimide produced via polyamide acid ester containing cyclobutane as a precursor and a second polyimide produced via polyamide acid as a precursor;wherein the polyamide acid has a higher polarity than that of the polyamide acid ester;wherein the one of the first alignment film and the second alignment film is responsive to photo-alignment;wherein a first side of the one of the first alignment film and the second alignment film is adjacent to the liquid crystals, a second side of the one of the first alignment film and the second alignment film is closer to one of the TFT substrate ...

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Номер записи: 60
18-07-2017 дата публикации

Liquid crystal display device

Номер: US0009709854B2
Автор: Takenori Hirota, Yasuhiro Kanaya, Hidehiro Sonoda, Toshiki Kaneko
Принадлежит: Japan Display Inc.

A reliability of seal portion of a liquid crystal display device can be improved by the following structure. A liquid crystal display device includes: a TFT substrate which includes a display region and a terminal part, and has an inorganic insulating film formed on an organic passivation film and an alignment film formed over the inorganic insulating film; a counter substrate, the TFT substrate and the counter substrate bonded together by a sealing material formed at a seal part surrounding the display region; and a liquid crystal sealed inside. At the seal part, a transparent conductive oxide film is formed between the inorganic insulating film and the alignment film. The transparent conductive oxide film exists inside an edge of the TFT substrate and hence, the edge of the TFT substrate is free of the transparent conductive oxide film.

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Номер записи: 61
26-11-2009 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF MANUFACTURING THAT

Номер: US20090289260A1
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu
Принадлежит: Hitachi Displays, Ltd.

A liquid crystal display device which can reduce or eliminate a display defect is provided. The liquid crystal display device includes a first alignment film formed on one of the pair of substrates; a second alignment film formed on another of the pair of substrates; first projecting portions which are provided to the first alignment film and project into the liquid crystal layer by first constitutional members which constitute a layer below the first alignment film; and second projecting portions which are provided to the second alignment film, face the first projecting portions, and project into the liquid crystal layer by second constitutional members which constitute a layer below the second alignment film, the first projecting portion being set lower than the second projecting portion, and an area of an upper surface of the first projecting portion being set smaller than an area of an upper surface of the second projecting portion. The first alignment film is made of a photo-decomposition-type ...

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Номер записи: 62
10-04-2018 дата публикации

Liquid crystal display device

Номер: US0009939698B2
Автор: Yasushi Tomioka, Toshimasa Ishigaki, Hidehiro Sonoda, Sumito Ueta, TOMIOKA YASUSHI, ISHIGAKI TOSHIMASA, SONODA HIDEHIRO, UETA SUMITO, Tomioka Yasushi, Ishigaki Toshimasa, Sonoda Hidehiro, Ueta Sumito
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC

A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole.

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Номер записи: 63
14-01-2020 дата публикации

Liquid crystal display device

Номер: US0010534225B2
Автор: Noboru Kunimatsu, Chikae Matsui, Hidehiro Sonoda, Yuko Matsumoto, Shoichi Uchino, Masaki Matsumori, Yasushi Tomioka, KUNIMATSU NOBORU, MATSUI CHIKAE, SONODA HIDEHIRO, MATSUMOTO YUKO, UCHINO SHOICHI, MATSUMORI MASAKI, TOMIOKA YASUSHI, Kunimatsu, Noboru, Matsui, Chikae, Sonoda, Hidehiro, Matsumoto, Yuko, Uchino, Shoichi, Matsumori, Masaki, Tomioka, Yasushi
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

A liquid crystal display device includes a TFT substrate having a first alignment film and an opposing substrate having a second alignment film with liquid crystals sandwiched therebetween. One of the first and second alignment films, comprises a first polyimide produced via polyamide acid ester containing cyclobutane as a precursor and a second polyimide produced via polyamide acid as a precursor. The polyamide acid has a higher polarity than that of the polyamide acid ester. The one of the first and second alignment films is responsive to photo-alignment. A first side of the one of the first and second alignment films is adjacent to the liquid crystals, and a second side thereof is closer to one of the TFT substrate and the counter substrate than the first side. The first side contains more of the first polyimide and less of the second polyimide than the second side.

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Номер записи: 64
21-01-2020 дата публикации

Liquid crystal display device and manufacturing method thereof

Номер: US0010539833B2
Автор: Noboru Kunimatsu, Masaki Matsumori, Hidehiro Sonoda, Yasushi Tomioka, Toshiki Kaneko, KUNIMATSU NOBORU, MATSUMORI MASAKI, SONODA HIDEHIRO, TOMIOKA YASUSHI, KANEKO TOSHIKI, Kunimatsu, Noboru, Matsumori, Masaki, Sonoda, Hidehiro, Tomioka, Yasushi, Kaneko, Toshiki
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC

The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film.

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Номер записи: 65
24-07-2018 дата публикации

Liquid crystal display device

Номер: US0010031383B2
Автор: Yasushi Tomioka, Yosuke Hyodo, Hidehiro Sonoda, Noboru Kunimatsu, TOMIOKA YASUSHI, HYODO YOSUKE, SONODA HIDEHIRO, KUNIMATSU NOBORU, Tomioka, Yasushi, Hyodo, Yosuke, Sonoda, Hidehiro, Kunimatsu, Noboru
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC

In a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment film material can easily flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole.

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Номер записи: 66
01-11-2018 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20180314113A1
Автор: Hidehiro Sonoda, Takenori Hirota, Noboru Kunimatsu, Koichi Igeta, SONODA HIDEHIRO, HIROTA TAKENORI, KUNIMATSU NOBORU, IGETA KOICHI, Sonoda, Hidehiro, Hirota, Takenori, Kunimatsu, Noboru, Igeta, Koichi
Принадлежит: Japan Display Inc.

According to one embodiment, a liquid crystal display device includes a first substrate including a first area and a second area, a second substrate opposing the first substrate but not opposing the second area, a sealing part which adheres the first substrate and the second substrate to each other, a liquid crystal layer located between the first substrate and the second substrate and surrounded by the sealing part, an alignment film disposed on the first substrate so as to be in contact with the liquid crystal layer and a terminal located in the second area and connected to an external circuit. In plan view, the alignment film includes an end located between the sealing part and the terminal. 1. A liquid crystal display device comprising:a first substrate comprising a first area and a second area;a second substrate opposing the first substrate and not opposing the second area;a sealing part which adheres the first substrate and the second substrate to each other;a liquid crystal layer located between the first substrate and the second substrate and surrounded by the sealing part;an alignment film disposed on the first substrate so as to be in contact with the liquid crystal layer; anda terminal located in the second area and connected to an external circuit,the alignment film including an end located between the sealing part and the terminal in plan view.2. The device of claim 1 , whereinthe alignment film includes a portion extending from the sealing part and having a width of less than 200 μm in plan view.3. The device of claim 1 , whereinthe second area has a width of less than 1,000 μm.4. The device of claim 2 , whereinthe second area has a width of less than 1,000 μm.5. The device of claim 1 , whereinthe alignment film includes an end portion a thickness of which decreases along an extending direction.6. The device of claim 4 , whereinthe alignment film includes an end portion a thickness of which decreases along an extending direction.7. The device of claim ...

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Номер записи: 67
19-10-2021 дата публикации

Liquid crystal display device

Номер: US0011150523B2
Автор: Yasushi Tomioka, Yosuke Hyodo, Hidehiro Sonoda, Noboru Kunimatsu, TOMIOKA YASUSHI, HYODO YOSUKE, SONODA HIDEHIRO, KUNIMATSU NOBORU, Tomioka, Yasushi, Hyodo, Yosuke, Sonoda, Hidehiro, Kunimatsu, Noboru
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC

In a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment film material can easily flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole.

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Номер записи: 68
11-10-2018 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20180292722A1
Автор: Yasushi TOMIOKA, Toshimasa Ishigaki, Hidehiro Sonoda, Sumito Ueta, TOMIOKA YASUSHI, ISHIGAKI TOSHIMASA, SONODA HIDEHIRO, UETA SUMITO, TOMIOKA, Yasushi, Ishigaki, Toshimasa, Sonoda, Hidehiro, Ueta, Sumito
Принадлежит:

A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole. 1. A liquid crystal display device comprising:a transistor substrate including;a thin film transistor having a source electrode,a gate signal line driving the thin film transistor,an organic insulating film formed on the thin film transistor and having a through hole which has a side wall,a common electrode formed on the organic insulating film,an interlayer insulating film formed on the common electrode,a pixel electrode formed on the interlayer insulating film, electrically connected to the source electrode via the through-hole, and formed of a conductive material,a counter substrate,a liquid crystal layer sandwiched between the transistor substrate and the counter substrate, anda photo-alignment film aligning the liquid crystal layer,wherein a formation part of the conductive material and a non-formation part of the conductive material overlap with the side wall of the through-hole, andwherein the photo-alignment film is inside the through-hole.2. The liquid crystal display device according to claim 1 , wherein the pixel electrode has a first edge and a second edge claim 1 ,wherein the ...

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Номер записи: 69
29-05-2014 дата публикации

Liquid Crystal Display Device

Номер: US20140144582A1
Автор: Noboru Kunimatsu, Chikae Matsui, Hidehiro Sonoda, Yuko Matsumoto, Shoichi Uchino, Masaki Matsumori, Yasushi Tomioka, KUNIMATSU NOBORU, MATSUI CHIKAE, SONODA HIDEHIRO, MATSUMOTO YUKO, UCHINO SHOICHI, MATSUMORI MASAKI, TOMIOKA YASUSHI
Принадлежит: Panasonic Liquid Crystal Display Co., Ltd., Japan Display Inc.

A method for fabricating a liquid crystal display device having a TFT substrate in which an alignment film is formed over a pixel including a pixel electrode and a TFT, an opposing substrate which faces the TFT substrate, and liquid crystals sandwiched between the TFT substrate and the opposing substrate, the alignment film on the TFT substrate including a first and a second alignment film. The method includes depositing a mixture liquid of polyamide acid ester, 80 percent or more of which is polyamide acid ester including cyclobutane, and polyamide acid not including cyclobutane onto the TFT substrate and the opposing substrate, and after drying and firing the TFT substrate and the opposing substrate to harden the alignment film, irradiating the alignment film with ultraviolet light for photo-alignment of the alignment film and, thereafter, heating the TFT substrate and the opposing substrate, thereby forming the alignment film. 1. A method for fabricating a liquid crystal display device including a TFT substrate in which an alignment film is formed over a pixel including a pixel electrode and a TFT; an opposing substrate which faces the TFT substrate; and liquid crystals sandwiched between the TFT substrate and the opposing substrate;wherein the alignment film on the TFT substrate includes a first alignment film adjoining a liquid crystal layer and a second alignment film formed underlying the first alignment film;the method comprising the steps of:depositing a mixture liquid of polyamide acid ester, 80 percent or more of which is polyamide acid ester including cyclobutane, and polyamide acid not including cyclobutane onto the TFT substrate and the opposing substrate; andafter drying and firing the TFT substrate and the opposing substrate to harden the alignment film, irradiating the alignment film with ultraviolet light for photo-alignment of the alignment film and, thereafter, heating the TFT substrate and the opposing substrate, thereby forming the alignment ...

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Номер записи: 70
13-10-2015 дата публикации

Liquid crystal display device and manufacturing method thereof

Номер: US0009158160B2
Автор: Noboru Kunimatsu, Masaki Matsumori, Hidehiro Sonoda, Yasushi Tomioka, Toshiki Kaneko, KUNIMATSU NOBORU, MATSUMORI MASAKI, SONODA HIDEHIRO, TOMIOKA YASUSHI, KANEKO TOSHIKI
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC, JAPAN DISPLAY INC.

The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film.

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Номер записи: 71
05-02-2013 дата публикации

Method of manufacturing a display device having an orientation film

Номер: US0008366504B2
Автор: Yuko Matsumoto, Hidehiro Sonoda, Noboru Kunimatsu, MATSUMOTO YUKO, SONODA HIDEHIRO, KUNIMATSU NOBORU
Принадлежит: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd., HITACHI DISPLAYS LTD, PANASONIC LIQUID CRYSTAL DISPL, MATSUMOTO YUKO, SONODA HIDEHIRO, KUNIMATSU NOBORU, HITACHI DISPLAYS, LTD., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.

The present invention relates to a method of manufacturing a liquid crystal display device having a TFT substrate and a counter substrate, and prevents brightness unevenness from being caused by orientation film thickness unevenness. Orientation films for the TFT substrate (10) and the counter substrate (20) are formed by offset printing that is performed to transfer an orientation film material from a printing plate to the TFT substrate (10).The direction in which the printing plate for an offset printing machine rotates during offset printing is the long-axis direction of the TFT substrate (10) in the case of the TFT substrate (10) or the short-axis direction of the counter substrate in the case of the counter substrate. This ensures that brightness unevenness caused by orientation film thickness unevenness is inconspicuous even when the orientation film thickness unevenness is produced during offset printing.

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Номер записи: 72
08-03-2012 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20120057115A1
Автор: Noboru KUNIMATSU, Chikae Matsui, Hidehiro Sonoda, Yuko Matsumoto, Yosuke Hyodo, Masaki Matsumori, Yasushi Tomioka, Yasuo Imanishi, KUNIMATSU NOBORU, MATSUI CHIKAE, SONODA HIDEHIRO, MATSUMOTO YUKO, HYODO YOSUKE, MATSUMORI MASAKI, TOMIOKA YASUSHI, IMANISHI YASUO
Принадлежит: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.

An IPS liquid crystal display device intended to prevent generation of second image sticking after generation of initial DC image sticking. An alignment film has a two-layer structure comprising an upper alignment film and a lower alignment film. The upper alignment film is an optical alignment film formed of a polyamide acid ester as a precursor. The lower alignment film has a lower resistance value than the upper alignment film and also has a low photoconductive property. The lower alignment film is formed not using, as a precursor, a polyamide acid using PMDA as the starting material but using, as a precursor, the polyamide acid containing a sulfonic acid group or a carboxylic group, whereby the difference of the resistance between portions undergoing or not undergoing light irradiation in the pixel is decreased and generation of second image sticking can be prevented.

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Номер записи: 73
12-09-2002 дата публикации

Liquid crystal display

Номер: US20020127354A1
Автор: Setsuo Kobayashi, Hidehiro Sonoda, Noboru Kunimatsu
Принадлежит: Hitachi, Ltd.

A liquid crystal display device which is constructed to restrain the occurrence of ionic image retention includes substrates disposed in opposition to each other with a liquid crystal being interposed therebetween, a pixel electrode formed in each pixel area on a liquid-crystal-side surface of one of the substrates, a counter electrode which generates an electric field between itself and the pixel electrode, and alignment films disposed in contact with the liquid crystal on the liquid-crystal-side surfaces of the respective substrates. The liquid crystal has a positive or negative dielectric anisotropy, and each of the alignment films is made of a material containing a diamine structure which traps ionic impurities.

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Номер записи: 74
23-07-2013 дата публикации

Liquid crystal display device and manufacturing method thereof

Номер: US0008493532B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, Yuko Matsumoto, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, MATSUMOTO YUKO
Принадлежит: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd., SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, MATSUMOTO YUKO, HITACHI DISPLAYS LTD, PANASONIC LIQUID CRYSTAL DISPL, HITACHI DISPLAYS, LTD., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.

A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film.

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Номер записи: 75
24-03-2015 дата публикации

Method for fabricating a liquid crystal display device comprising an alignment film that includes a photolytic polymer and a non-photolytic polymer

Номер: US0008988639B2
Автор: Noboru Kunimatsu, Chikae Matsui, Hidehiro Sonoda, Yuko Matsumoto, Shoichi Uchino, Masaki Matsumori, Yasushi Tomioka, KUNIMATSU NOBORU, MATSUI CHIKAE, SONODA HIDEHIRO, MATSUMOTO YUKO, UCHINO SHOICHI, MATSUMORI MASAKI, TOMIOKA YASUSHI
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL, JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.

A method for fabricating a liquid crystal display device including a TFT substrate having an alignment film formed thereon, an opposing substrate, and a liquid crystal layer sandwiched therebetween. The alignment film on the TFT substrate includes a photolytic polymer made from a first precursor including cyclobutane, and a non-photolytic polymer made from a second precursor. The method includes the steps of depositing a mixture material including the first precursor and the second precursor in which the second precursor settles more on an upper surface of the TFT substrate than the first precursor, imidizing the mixture material, and irradiating the mixture material with ultraviolet light for photo-alignment, and after irradiating, heating the mixture material to form the alignment film.

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Номер записи: 76
19-11-2019 дата публикации

Liquid crystal display device

Номер: US0010481442B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, Sonoda, Hidehiro, Matsui, Chikae, Kunimatsu, Noboru
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

A liquid crystal display device includes a TFT substrate and a counter substrate and a liquid crystal layer sandwiched therebetween. A scanning line, a video signal line, a thin film transistor connected to the scanning line and the video signal line, a pixel electrode connected to the thin film transistor, and a counter electrode are formed on the TFT substrate, and a columnar spacer formed on the counter substrate. The pixel and counter electrodes are transparent, and the liquid crystal layer is controlled by an electric field generated between the pixel and counter electrodes. The counter electrode contacts with a metal line having a first part which is extended in parallel with the scanning line and a second part which is extended in parallel with the video signal line, a width of the first part of the metal line being narrower than a width of the scanning line.

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Номер записи: 77
31-05-2012 дата публикации

SOLVENT FOR MAKING LIQUID CRYSTAL ALIGNMENT FILM, MATERIALS FOR THE ALIGNMENT FILM, AND METHOD FOR MANUFACTURING LIQUID CRYSTAL DISPLAY

Номер: US20120135661A1
Автор: Yasuo IMANISHI, Hidehiro Sonoda, Noboru Kunimatsu, Yasushi Tomioka, Masaki Matsumori, IMANISHI YASUO, SONODA HIDEHIRO, KUNIMATSU NOBORU, TOMIOKA YASUSHI, MATSUMORI MASAKI
Принадлежит: Hitachi Displays, Ltd.

Provided is a solvent for forming an alignment film capable of fabricating a liquid crystal alignment film having high quality, an improved imidization ratio, large surface anisotropy, and a strong anchoring force. The solvent for forming an alignment film including a polymer for a liquid crystal display includes the polymer of the alignment film including polyimide and a variable compound capable of changing a chemical structure for evaporating after imidizing and sintering, which is in a liquid state during a film-forming process of coating, imidizing, and sintering polyamic acid which is a precursor of polyimide.

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Номер записи: 78
23-06-2020 дата публикации

Liquid crystal display device

Номер: US0010690971B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, Sonoda, Hidehiro, Matsui, Chikae, Kunimatsu, Noboru
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

A liquid crystal display device includes a TFT substrate and a counter substrate and a liquid crystal layer sandwiched therebetween. A scanning line, a video signal line, a thin film transistor connected to the scanning line and the video signal line, a pixel electrode connected to the thin film transistor, and a counter electrode are formed on the TFT substrate, and a columnar spacer formed on the counter substrate. The pixel and counter electrodes are transparent, and the liquid crystal layer is controlled by an electric field generated between the pixel and counter electrodes. The counter electrode contacts with a metal line having a first part which is extended in parallel with the scanning line and a second part which is extended in parallel with the video signal line, a width of the first part of the metal line being narrower than a width of the scanning line.

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Номер записи: 79
17-11-2015 дата публикации

Liquid crystal display device

Номер: US0009188811B2
Автор: Chikae Matsui, Noboru Kunimatsu, Hidehiro Sonoda, MATSUI CHIKAE, KUNIMATSU NOBORU, SONODA HIDEHIRO
Принадлежит: Japan Display Inc., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL, JAPAN DISPLAY INC.

An alignment film is given a 2-layer structure comprising a photoalignment film that is photoalignable and a low-resistivity alignment film whose resistivity is smaller than that of the photoalignment film. The photoalignment film is formed by a polyimide whose precursor is polyamide acid alkyl ester, the number molecular weight of the photoalignment film is large, and the stability of alignment of the photoalignment film by photoalignment is excellent. The low-resistivity alignment film is formed by a polyimide whose precursor is polyamide acid, the number molecular weight of the low-resistivity alignment film is small, and the resistivity of the low-resistivity alignment film is small. The 2-layer structure alignment film can be maintaining an excellent photoalignment characteristic, so DC afterimages can be controlled.

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Номер записи: 80
05-04-2016 дата публикации

Liquid crystal display device

Номер: US0009304362B2
Автор: Chikae Matsui, Masanao Yamamoto, Noboru Kunimatsu, Hidehiro Sonoda, MATSUI CHIKAE, YAMAMOTO MASANAO, KUNIMATSU NOBORU, SONODA HIDEHIRO
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC, JAPAN DISPLAY INC.

In a liquid crystal display device including: TFT substrate; color filter; counter electrode; interlayer insulation film; pixel electrode; alignment film; liquid crystal layer; counter substrate; and Si semiconductor layer. The color filter, counter electrode, interlayer insulation film, pixel electrode, and alignment film being formed on the side where the TFT substrate is provided, the counter substrate being disposed in facing relation to the TFT substrate with the liquid crystal layer put between the counter substrate and TFT substrate, the Si semiconductor layer is formed between the pixel electrode and interlayer insulation film. Even when light from a backlight is absorbed by the color filter and sufficient light cannot reach the alignment film, electric charges accumulated on the alignment film can escape to the pixel electrode in an early stage by the Si semiconductor layer formed under the alignment film, thereby capable of erasing the afterimage in an early stage.

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Номер записи: 81
31-03-2015 дата публикации

Liquid crystal display device

Номер: US0008994908B2
Автор: Chikae Matsui, Hidehiro Sonoda, Noboru Kunimatsu, MATSUI CHIKAE, SONODA HIDEHIRO, KUNIMATSU NOBORU
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL, JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.

In a liquid crystal display device, a light shielding film, a color filter, an overcoat film, and an alignment film are formed in this order on a counter substrate. However, the alignment film is not formed in a seal portion. When the alignment film is subjected to photo-alignment with ultraviolet radiation, a portion of the overcoat film not covered with the alignment film is degraded by ultraviolet radiation. In order to prevent moisture penetrating from the degraded overcoat film from reaching the light shielding film to thereby alter the light shielding film and from causing the peeling of the light shielding film, the color filter is disposed below the overcoat film to block the moisture.

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Номер записи: 82
01-09-2020 дата публикации

Liquid crystal display device

Номер: US0010761380B2
Автор: Takenori Hirota, Yasuhiro Kanaya, Hidehiro Sonoda, Toshiki Kaneko
Принадлежит: Japan Display Inc.

A reliability of seal portion of a liquid crystal display device can be improved by the following structure. A liquid crystal display device includes: a TFT substrate which includes a display region and a terminal part, and has an inorganic insulating film formed on an organic passivation film and an alignment film formed over the inorganic insulating film; a counter substrate, the TFT substrate and the counter substrate bonded together by a sealing material formed at a seal part surrounding the display region; and a liquid crystal sealed inside. At the seal part, a transparent conductive oxide film is formed between the inorganic insulating film and the alignment film. The transparent conductive oxide film exists inside an edge of the TFT substrate and hence, the edge of the TFT substrate is free of the transparent conductive oxide film.

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Номер записи: 83
09-04-2020 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20200110316A1
Автор: Noboru KUNIMATSU, Chikae Matsui, Hidehiro Sonoda, Yuko Matsumoto, Shoichi Uchino, Masaki Matsumori, Yasushi Tomioka, KUNIMATSU NOBORU, MATSUI CHIKAE, SONODA HIDEHIRO, MATSUMOTO YUKO, UCHINO SHOICHI, MATSUMORI MASAKI, TOMIOKA YASUSHI, KUNIMATSU, Noboru, Matsui, Chikae, Sonoda, Hidehiro, Matsumoto, Yuko, Uchino, Shoichi, Matsumori, Masaki, Tomioka, Yasushi
Принадлежит:

A liquid crystal display device includes a TFT substrate having a first alignment film and an opposing substrate having a second alignment film with liquid crystals sandwiched therebetween. One of the first and second alignment films, comprises a first polyimide produced via polyamide acid ester containing cyclobutane as a precursor and a second polyimide produced via polyamide acid as a precursor. The polyamide acid has a higher polarity than that of the polyamide acid ester. The one of the first and second alignment films is responsive to photo-alignment. A first side of the one of the first and second alignment films is adjacent to the liquid crystals, and a second side thereof is closer to one of the TFT substrate and the counter substrate than the first side. The first side contains more of the first polyimide and less of the second polyimide than the second side. 1. A method for fabricating a liquid crystal display device including a TFT substrate having a photo-alignment film formed over a pixel electrode and a common electrode;an opposing substrate which faces the TFT substrate; anda liquid crystal layer sandwiched between the TFT substrate and the opposing substrate;wherein the photo-alignment film on the TFT substrate includes a first polyimide made from a first precursor and a second polyimide made from a second precursor having different polarity from the first precursor;the method comprising the steps of:forming a mixture material including the first precursor and the second precursor;imidizing the mixture material so that the first precursor and the second precursor are imidized,irradiating the first polyimide, constituted from the imidized first precursor, with ultraviolet light for photo-alignment; andafter irradiating, heating the first polyimide to form the photo-alignment film.2. The method for fabricating a liquid crystal display device according to claim 1 ,wherein an irradiance level of the ultraviolet light is from 2000 to 5000 mJ/cm2, a ...

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Номер записи: 84
15-03-2022 дата публикации

Liquid crystal display device and manufacturing method thereof

Номер: US0011275274B2
Автор: Noboru Kunimatsu, Masaki Matsumori, Hidehiro Sonoda, Yasushi Tomioka, Toshiki Kaneko
Принадлежит: Japan Display Inc.

The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film.

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Номер записи: 85
10-11-2011 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20110273649A1
Автор: Chikae MATSUI, Noboru Kunimatsu, Hidehiro Sonoda, Yuko Matsumoto, Yosuke Hyodo, MATSUI CHIKAE, KUNIMATSU NOBORU, SONODA HIDEHIRO, MATSUMOTO YUKO, HYODO YOSUKE
Принадлежит: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.

Each pixel formed on a TFT substrate includes a pixel electrode, and a TFT, a color filter, an opposed electrode and an insulating film are interposed between the pixel electrode and the TFT substrate. A liquid crystal layer is interposed between the TFT substrate and an opposed substrate. An alignment film is provided on each surface of the TFT substrate and the opposed substrate, the each surface being in contact with the liquid crystal layer. A material with high photoconductivity is used for forming the alignment film so as to suppress DC afterimage. Meanwhile, each thickness of the color filter for the respective colors is changed for preventing a yellow shift resulting from absorption of high intensity of light with short wavelength by the alignment film.

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Номер записи: 86
08-01-2015 дата публикации

METHOD FOR FABRICATING A LIQUID CRYSTAL DISPLAY DEVICE COMPRISING AN ALIGNMENT FILM THAT INCLUDES A PHOTOLYTIC POLYMER AND A NON-PHOTOLYTIC POLYMER

Номер: US20150011032A1
Автор: Noboru Kunimatsu, Chikae Matsui, Hidehiro Sonoda, Yuko Matsumoto, Shoichi Uchino, Masaki Matsumori, Yasushi Tomioka, KUNIMATSU NOBORU, MATSUI CHIKAE, SONODA HIDEHIRO, MATSUMOTO YUKO, UCHINO SHOICHI, MATSUMORI MASAKI, TOMIOKA YASUSHI
Принадлежит:

A method for fabricating a liquid crystal display device including a TFT substrate having an alignment film formed thereon, an opposing substrate, and a liquid crystal layer sandwiched therebetween. The alignment film on the TFT substrate includes a photolytic polymer made from a first precursor including cyclobutane, and a non-photolytic polymer made from a second precursor. The method includes the steps of depositing a mixture material including the first precursor and the second precursor in which the second precursor settles more on an upper surface of the TFT substrate than the first precursor, imidizing the mixture material, and irradiating the mixture material with ultraviolet light for photo-alignment, and after irradiating, heating the mixture material to form the alignment film. 1. A method for fabricating a liquid crystal display device including a TFT substrate in which an alignment film is formed over a pixel electrode and a common electrode;an opposing substrate which faces the TFT substrate; anda liquid crystal layer sandwiched between the TFT substrate and the opposing substrate;wherein the alignment film on the TFT substrate includes a photolytic polymer made from a first precursor including cyclobutane, and a non-photolytic polymer made from a second precursor;the method comprising the steps of:depositing a mixture material including the first precursor and the second precursor in which the second precursor settles more on an upper surface of the TFT substrate than the first precursor;imidizing the mixture material, and irradiating the mixture material with ultraviolet light for photo-alignment; andafter irradiating, heating the mixture material to form the alignment film.2. The method for fabricating a liquid crystal display device according to claim 1 ,{'sup': '2', 'wherein an irradiance level of the ultraviolet light is from 2000 to 5000 mJ/cm, a temperature at which the TFT substrate and the opposing substrate are heated after the ultraviolet ...

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Номер записи: 87
03-09-2019 дата публикации

Liquid crystal display device and method of manufacturing that

Номер: US0010401687B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, Sonoda, Hidehiro, Matsui, Chikae, Kunimatsu, Noboru
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first alignment film is a photo alignment film, and a thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy formula (2), d2 Подробнее

Номер записи: 88
10-10-2017 дата публикации

Liquid crystal display device

Номер: US0009785013B2
Автор: Noboru Kunimatsu, Chikae Matsui, Hidehiro Sonoda, Yuko Matsumoto, Shoichi Uchino, Masaki Matsumori, Yasushi Tomioka, KUNIMATSU NOBORU, MATSUI CHIKAE, SONODA HIDEHIRO, MATSUMOTO YUKO, UCHINO SHOICHI, MATSUMORI MASAKI, TOMIOKA YASUSHI, Kunimatsu Noboru, Matsui Chikae, Sonoda Hidehiro, Matsumoto Yuko, Uchino Shoichi, Matsumori Masaki, Tomioka Yasushi
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

A liquid crystal display device includes a TFT substrate having a first alignment film and an opposing substrate having a second alignment film with liquid crystals sandwiched therebetween. One of the first and second alignment films, comprises a first polyimide produced via polyamide acid ester containing cyclobutane as a precursor and a second polyimide produced via polyamide acid as a precursor. The polyamide acid has a higher polarity than that of the polyamide acid ester. The one of the first and second alignment films is responsive to photo-alignment. A first side of the one of the first and second alignment films is adjacent to the liquid crystals, and a second side thereof is closer to one of the TFT substrate and the counter substrate than the first side. The first side contains more of the first polyimide and less of the second polyimide than the second side.

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Номер записи: 89
09-12-2014 дата публикации

Liquid crystal display device and manufacturing method thereof

Номер: US0008908133B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, Yuko Matsumoto, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, MATSUMOTO YUKO
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL, PANASONIC LIQUID CRYSTAL CO LTD, JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., PANASONIC LIQUID CRYSTAL CO., LTD.

A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film.

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Номер записи: 90
27-04-2021 дата публикации

Liquid crystal display device

Номер: US0010989965B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, Sonoda, Hidehiro, Matsui, Chikae, Kunimatsu, Noboru
Принадлежит: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

A liquid crystal display device includes a TFT substrate and a counter substrate and a liquid crystal layer sandwiched therebetween. A scanning line, a video signal line, a thin film transistor connected to the scanning line and the video signal line, a pixel electrode connected to the thin film transistor, and a counter electrode are formed on the TFT substrate, and a columnar spacer formed on the counter substrate. The pixel and counter electrodes are transparent, and the liquid crystal layer is controlled by an electric field generated between the pixel and counter electrodes. The counter electrode contacts with a metal line having a first part which is extended in parallel with the scanning line and a second part which is extended in parallel with the video signal line, a width of the first part of the metal line being narrower than a width of the scanning line.

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Номер записи: 91
02-02-2016 дата публикации

Liquid crystal display device

Номер: US0009250491B2
Автор: Yasushi Tomioka, Yosuke Hyodo, Hidehiro Sonoda, Noboru Kunimatsu, TOMIOKA YASUSHI, HYODO YOSUKE, SONODA HIDEHIRO, KUNIMATSU NOBORU
Принадлежит: JAPAN DISPLAY INC., JAPAN DISPLAY INC

In a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment film material can easily flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole.

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Номер записи: 92
18-10-2022 дата публикации

Liquid crystal display device

Номер: US0011474403B2
Автор: Yasushi Tomioka, Toshimasa Ishigaki, Hidehiro Sonoda, Sumito Ueta
Принадлежит: Japan Display Inc.

A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole.

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Номер записи: 93
01-12-2020 дата публикации

Liquid crystal display device

Номер: US0010852588B2
Автор: Chikae Matsui, Noboru Kunimatsu, Hidehiro Sonoda, MATSUI CHIKAE, KUNIMATSU NOBORU, SONODA HIDEHIRO, Matsui, Chikae, Kunimatsu, Noboru, Sonoda, Hidehiro
Принадлежит: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., JAPAN DISPLAY INC, PANASONIC LIQUID CRYSTAL DISPL

An alignment film is given a 2-layer structure comprising a photoalignment film that is photoalignable and a low-resistivity alignment film whose resistivity is smaller than that of the photoalignment film. The photoalignment film is formed by a polyimide whose precursor is polyamide acid alkyl ester, the number molecular weight of the photoalignment film is large, and the stability of alignment of the photoalignment film by photoalignment is excellent. The low-resistivity alignment film is formed by a polyimide whose precursor is polyamide acid, the number molecular weight of the low-resistivity alignment film is small, and the resistivity of the low-resistivity alignment film is small. The 2-layer structure alignment film can be maintaining an excellent photoalignment characteristic, so DC afterimages can be controlled.

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Номер записи: 94
28-06-2018 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20180180947A1
Автор: Yasuo IMANISHI, Yosuke Hyodo, Chikae Matsui, Hidehiro Sonoda, Noboru Kunimatsu
Принадлежит:

The present invention provides a liquid crystal display device in which even in the case of using a photo-alignment technique, excellent afterimage characteristics can be stably obtained. Provided is a liquid crystal display device including a TFT substrate having an alignment film, an opposed substrate which is arranged to face the TFT substrate and on which an alignment film is formed, and a liquid crystal layer sandwiched between the alignment films, wherein the alignment films are materials that can provide a liquid crystal alignment restraining force by irradiating polarized light, and the ratio of oxygen atoms on the surface of the alignment film is higher than that in the alignment film. 1. A liquid crystal display device comprising:a thin-film transistor (TFT) substrate which includes a base substrate, pixel electrodes and TFTs and on which an alignment film is formed on a pixel; andan opposed substrate which is arranged to face the TFT substrate,wherein liquid crystal molecules are sandwiched between the alignment film of the TFT substrate and that of the opposed substrate, the alignment film is a polyimide material that can provide a liquid crystal alignment restraining force by irradiating polarized light,the polyimide material is made from a polyamide acid precursor or a polyamide acid ester precursor,the liquid crystal molecules are aligned in parallel with the base substrate,the ratio of oxygen atoms at a position with the highest oxygen concentration is 25% or higher than at a position with the lowest oxygen concentration in the alignment film,the ratio of oxygen atoms of the alignment film is gradually decreased from the surface contacting with the liquid crystal molecules towards the inside of the alignment in an alignment film thickness direction, andthe alignment film is a photo degradation-type photo-alignment.2. The liquid crystal display device according to claim 1 ,wherein the alignment film includes a first layer having the surface and a ...

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Номер записи: 95
30-04-2013 дата публикации

Liquid crystal display device and method of manufacturing that

Номер: US0008432517B2
Автор: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU
Принадлежит: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd., SONODA HIDEHIRO, MATSUI CHIKAE, KUNIMATSU NOBORU, HITACHI DISPLAYS LTD, PANASONIC LIQUID CRYSTAL DISPL, HITACHI DISPLAYS, LTD., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.

A solution for an alignment film of a liquid crystal display device includes a photo decomposition type polyimide acid which forms the alignment film in response to radiation of a polarized light, wherein a viscosity of the solution is not more than 35 mPa·s.

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Номер записи: 96
13-11-2018 дата публикации

Liquid crystal display device

Номер: US0010126611B2
Автор: Yasushi Tomioka, Yosuke Hyodo, Hidehiro Sonoda, Noboru Kunimatsu, TOMIOKA YASUSHI, HYODO YOSUKE, SONODA HIDEHIRO, KUNIMATSU NOBORU, Tomioka, Yasushi, Hyodo, Yosuke, Sonoda, Hidehiro, Kunimatsu, Noboru
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC

In a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment film material can easily flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole.

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Номер записи: 97
16-02-2016 дата публикации

Liquid crystal display device

Номер: US0009261735B2
Автор: Hidehiro Sonoda, Noboru Kunimatsu, Chikae Matsui, Takashi Yamamoto
Принадлежит: JAPAN DISPLAY INC., Panasonic Liquid Crystal Display Co., Ltd.

A liquid crystal display device includes a TFT substrate having a first alignment film formed on part of an inorganic insulating film, an overcoat film formed on a black matrix, a counter substrate having a second alignment film formed on the overcoat film, and a seal portion including a sealant. The TFT substrate is bonded to the counter substrate by the sealant. The sealant is bonded to the inorganic insulating film at the seal portion on the side where the TFT substrate is formed, with the first alignment film not being provided on the side, and, in the seal portion on the side where the counter substrate is formed, the sealant is bonded to the second alignment film but, is not bonded to the overcoat film.

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Номер записи: 98
12-12-2017 дата публикации

Liquid crystal display device

Номер: US0009841636B2
Автор: Yasushi Tomioka, Osamu Itou, Toshimasa Ishigaki, Hidehiro Sonoda, Yosuke Hyodo, TOMIOKA YASUSHI, ITOU OSAMU, ISHIGAKI TOSHIMASA, SONODA HIDEHIRO, HYODO YOSUKE, Tomioka Yasushi, Itou Osamu, Ishigaki Toshimasa, Sonoda Hidehiro, Hyodo Yosuke
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC

A high-definition and high-contrast liquid crystal display device having a high aperture ratio without light leakage around a columnar spacer is provided. The liquid crystal display device of a horizontal electric field type includes a TFT substrate with a pixel electrode and a common electrode, a color filter substrate with a color filter, a columnar spacer interposed between the substrates, and a liquid crystal layer arranged between the substrates. A liquid crystal alignment film formed between the substrates is a photo-alignment film. The columnar spacer, formed on the color filter substrate or the TFT substrate, has a wall-like shape and an inclined surface extending in a direction parallel to or perpendicular to a direction in which the liquid crystal is initially aligned.

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Номер записи: 99
13-12-2016 дата публикации

Liquid crystal display device

Номер: US0009519196B2
Автор: Yasushi Tomioka, Toshimasa Ishigaki, Hidehiro Sonoda, Sumito Ueta, TOMIOKA YASUSHI, ISHIGAKI TOSHIMASA, SONODA HIDEHIRO, UETA SUMITO, Tomioka Yasushi, Ishigaki Toshimasa, Sonoda Hidehiro, Ueta Sumito
Принадлежит: Japan Display Inc., JAPAN DISPLAY INC

A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole.

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Номер записи: 100
08-03-2012 дата публикации

MANUFACTURING METHOD OF DISPLAY DEVICE

Номер: US20120058702A1
Автор: KUNIMATSU Noboru, Matsumoto Yuko, SONODA Hidehiro
Принадлежит:

The present invention relates to a method of manufacturing a liquid crystal display device having a TFT substrate and a counter substrate, and prevents brightness unevenness from being caused by orientation film thickness unevenness. 1. A method of manufacturing a liquid crystal display device that includes a TFT substrate having a TFT , a pixel electrode , a scanning line , a video signal line , and an orientation film , a counter substrate having an orientation film , and a liquid crystal layer sandwiched between the orientation film for the TFT substrate and the orientation film for the counter substrate , the method comprising the steps of:forming the orientation film for the TFT substrate by offset printing that is performed to transfer an orientation film material from a printing plate to the TFT substrate, the direction in which the printing plate rotates during the offset printing being a first direction of the TFT substrate; andforming the orientation film for the counter substrate by offset printing that is performed to transfer an orientation film material from a printing plate to the counter substrate, the direction in which the printing plate rotates during the offset printing being perpendicular to the first direction of the TFT substrate.2. The liquid crystal display device manufacturing method according to claim 1 , wherein the first direction is the extension direction of the scanning line.3. A method of manufacturing a liquid crystal display device that includes a TFT substrate having a TFT claim 1 , a pixel electrode claim 1 , a scanning line claim 1 , a video signal line claim 1 , and an orientation film claim 1 , a counter substrate having an orientation film claim 1 , and a liquid crystal layer sandwiched between the orientation film for the TFT substrate and the orientation film for the counter substrate claim 1 , the method comprising the steps of:forming the orientation film for the TFT substrate by dripping an orientation film material from ...

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Номер записи: 101
29-03-2012 дата публикации

Liquid crystal display device

Номер: US20120075559A1
Автор: Chikae Matsui, Hidehiro Sonoda, Noboru Kunimatsu, Takashi Yamamoto
Принадлежит: Hitachi Displays Ltd, Panasonic Liquid Crystal Display Co Ltd

A liquid crystal display device includes a TFT substrate having a first alignment film formed on part of an inorganic insulating film, an overcoat film formed on a black matrix, a counter substrate having a second alignment film formed on the overcoat film, and a seal portion including a sealant. The TFT substrate is bonded to the counter substrate by the sealant. The sealant is bonded to the inorganic insulating film at the seal portion on the side where the TFT substrate is formed, with the first alignment film not being provided on the side, and, in the seal portion on the side where the counter substrate is formed, the sealant is bonded to the second alignment film but, is not bonded to the overcoat film.

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Номер записи: 102
13-12-2012 дата публикации

Liquid Crystal Display Device

Номер: US20120314177A1
Автор: Hidehiro Sonoda, Koichi Igeta, Noboru Kunimatsu, Toshiki Kaneko, Yosuke Hyodo
Принадлежит: Japan Display East Inc

A liquid crystal display device includes a TFT substrate having an organic passivation film, and a counter substrate, with liquid crystals inside of the liquid crystal display device. A columnar spacer is formed on the counter substrate, which defines a distance between the TFT substrate and the counter substrate, and a concavo-convex pedestal is formed in a pixel region of the TFT substrate, the concavo-convex pedestal being provided in facing relation to the columnar spacer. The concavo-convex pedestal is formed with a convex portion and a concave portion at a bottom of the concavo-convex pedestal, with a top end of the columnar spacer being in contact with two or more convex portions formed on the bottom of the concavo-convex pedestal, and an area at the bottom of the concavo-convex pedestal being larger than the area at the top end of the columnar spacer.

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Номер записи: 103
24-01-2013 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20130021552A1
Автор: Igeta Koichi, Imanishi Yasuo, KUNIMATSU Noboru, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

In a liquid crystal display device, a TFT substrate retains a contact hole that is formed in a passivation film, and is for connecting the TFT and the pixel electrode. And an opposite substrate retains a columnar spacer for ensuring a cell gap, and a columnar projection for misalignment prevention formed at a position corresponding to a position of the contact hole. Accordingly, misalignment between the TFT substrate and the opposite substrate is suppressed, occurrence of uneven brightness due to misalignment between pixel regions and a bright spot caused by shaving of an orientation film is prevented, and a favorable image is obtained. 1. A liquid crystal display device , comprising:a thin-film transistor (TFT) substrate in which a pixel electrode, a TFT and the like are formed in a matrix;an opposite substrate in which a color filter and the like are formed at a position corresponding to a position of the pixel electrode and that is arranged with a predetermined gap with the TFT substrate; anda liquid crystal retained in the gap; whereinthe TFT substrate retains a contact hole that is formed in a passivation film, and is for connecting the TFT and the pixel electrode; andthe opposite substrate retains a columnar spacer for ensuring a cell gap, and a columnar projection for misalignment prevention formed at a position corresponding to a position of the contact hole.2. The liquid crystal display device according to claim 1 , wherein the passivation film includes an organic passivation film.3. The liquid crystal display device according to claim 1 , wherein the passivation film is comprised only of an inorganic passivation film.42. The liquid crystal display device according to claim 1 , wherein a difference Ah between height hi of the columnar projection and height h of the columnar spacer is equal to or less than depth z of the contact hole.51. The liquid crystal display device according to claim 1 , wherein height h of the columnar projection is larger than a cell ...

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Номер записи: 104
14-02-2013 дата публикации

LIGHT IRRADIATION APPARATUS

Номер: US20130039030A1
Автор: KUNIMATSU Noboru, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

By narrowing the length of an irradiation area, a scan distance is shortened and a process time of a light irradiation process is shortened. A light irradiation apparatus irradiating light to a substrate by using a long arc lamp includes: a reflection mirror having a cross-sectional shape which is an oval or parabolic shape and having a shape as if light irradiated is condensed on the surface of the substrate; and a slit limiting an irradiation area of the irradiated light, wherein on a section perpendicular to a long axis of the long arc lamp, a main irradiation area length X and a gap H between the long arc lamp and the substrate satisfy a relationship of X<0.087H. 1. Alight irradiation apparatus irradiating light to a substrate by using a long arc lamp , comprising:a reflection mirror having a cross-sectional shape which is an oval or parabolic shape and having a shape as if light irradiated is condensed on the surface of the substrate; anda slit limiting an irradiation area of the irradiated light,wherein on a section perpendicular to a long axis of the long arc lamp, a main irradiation area length X and a gap H between the long arc lamp and the substrate satisfy a relationship of X<0.087H, anda gap h between the slit and the substrate satisfies a relationship of h Подробнее

Номер записи: 105
09-05-2013 дата публикации

Liquid Crystal Display Device and Manufacturing Method Thereof

Номер: US20130114031A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, Matsumoto Yuko, SONODA Hidehiro
Принадлежит:

A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film. 1. A liquid crystal display device including a liquid crystal display panel including pixels arranged in a dot matrix array ,the liquid crystal display panel including a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate,the first substrate including a first electrode and a second electrode, an insulating layer disposed between the first electrode and the second electrode, and a first alignment film disposed on the second electrode,the second substrate including a second alignment film, andwherein the liquid crystal layer is configured to be controlled by an electric field which is generated between the first electrode and the second electrode,wherein the first electrode and the second electrode are transparent, andthe first electrode has a planar shape and the second electrode has a comb teeth plane shape,wherein the first alignment film and the second alignment film comprise, respectively, a photo alignment film formed by irradiating a photo decomposition type insulating film with light,wherein the second alignment film has a thickness of at least 10 nm and no greater ...

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Номер записи: 106
23-05-2013 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20130128187A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит: JAPAN DISPLAY EAST INC.

A high quality liquid crystal display device has an alignment film with a photoconductive characteristic. Since a region having gate lines situated therebelow does not undergo irradiation of a backlight, no photoconductive effect can be obtained. A photoresist is disposed below the alignment film situated over the gate lines in order to transfer the charges in the region to an opening portion of the alignment film in an early stage. Since the photoresist has a thickness of about 1.5 μm, which is 20 times or more the 70 nm thickness of the alignment film, the resistance in the lateral direction is low in a portion where the photoresist is present. Accordingly, since the charges on the alignment film present over the gate line transfer to the opening portion of the alignment film and are eliminated in an early stage, the residual image is eliminated in the early stage. 1. A liquid crystal display device including:a liquid crystal display panel where liquid crystals are put between a TFT substrate and a counter substrate, the TFT substrate having pixel electrodes formed each in a region surrounded by gate lines extending in a first direction and arranged in a second direction and data lines extending in the second direction and arranged in the first direction, the counter substrate having color filters corresponding to the pixels, anda backlight disposed at the back of the liquid crystal display Panel, whereinan alignment film is formed to cover the gate lines, the data lines, and the pixel electrodes,the alignment film is subjected to an optical alignment treatment,the alignment film has a photoconductive characteristic, anda photoresist is disposed below the alignment film that covers the gate lines.2. The liquid crystal display device according to claim 1 ,wherein the thickness of the photoresist is 10 times or more the thickness of the alignment film.3. The liquid crystal display device according to claim 2 ,wherein the thickness of the photoresist is 20 times or ...

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Номер записи: 107
22-08-2013 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20130215353A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

In a liquid crystal display device, a light shielding film, a color filter, an overcoat film, and an alignment film are formed in this order on a counter substrate. However, the alignment film is not formed in a seal portion. When the alignment film is subjected to photo-alignment with ultraviolet radiation, a portion of the overcoat film not covered with the alignment film is degraded by ultraviolet radiation. In order to prevent moisture penetrating from the degraded overcoat film from reaching the light shielding film to thereby alter the light shielding film and from causing the peeling of the light shielding film, the color filter is disposed below the overcoat film to block the moisture. 1. A liquid crystal display device comprising:a TFT substrate including a display region where pixels each including a TFT and a pixel electrode are formed in a matrix and where a counter electrode is formed;a counter substrate bonded to the TFT substrate with a sealing material in a seal portion at a periphery thereof and including a display region where a light shielding film and color filters of three colors are formed, an overcoat film is formed so as to cover the color filters of three colors, and an alignment film is formed in direct contact with the overcoat film so as to cover the overcoat film, wherein the overcoat film has a first region covered by the alignment film and a second region not covered by the alignment film, wherein a first portion of the second region is in direct contact with the sealing material and a second portion of the second region is exposed from both the sealing material and the alignment film; andliquid crystal sealed between the TFT substrate and the counter substrate, wherein:in each pixel, transmittance of light is controlled by a voltage between the pixel electrode and the counter electrode;in the counter substrate, the alignment film, the first portion and the exposed second portion of the second region of the overcoat film are all ...

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Номер записи: 108
31-10-2013 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20130286333A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, Matsumoto Yuko, SONODA Hidehiro
Принадлежит:

A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film. 1. A liquid crystal display device including a liquid crystal display panel including pixels arranged in a dot matrix array ,the liquid crystal display panel including a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate,the first substrate including a first electrode, a second electrode, an insulation layer disposed between the first electrode and the second electrode, and a first alignment film disposed on the second electrode, andthe second substrate including an organic planarized layer and a second alignment film formed on the organic planarized layer,wherein the liquid crystal layer is configured to be controlled by an electric field which is generated between the first electrode and the second electrode,wherein the first electrode and the second electrode are transparent, and the first electrode is a planar shape and the second electrode includes a plurality of slits,wherein the first alignment film and the second alignment film comprise, respectively, a photo alignment film formed by irradiation a photo decomposition type insulating film with light, andwherein a ...

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Номер записи: 109
09-01-2014 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20140009711A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

A liquid crystal display device in a lateral electric field mode includes: a metal wiring formed on a transparent substrate; an inorganic insulating film and an organic insulating film formed on the metal wiring; and a first transparent electrode and a second transparent electrode formed on the inorganic insulating film and the organic insulating film so that the first and the second transparent electrodes are opposite to each other through an interlayer insulating film. The film thickness of the organic insulating film on the metal wiring is made thicker than the film thickness of the organic insulating film inside a pixel display region including the contact hole, and a projecting portion of the organic insulating film is formed on the metal wiring. A pixel electrode formed of the first electrode or the second electrode is formed on an image display region including a slope portion of the projecting portion. 1. A liquid crystal display device in a lateral electric field mode comprising:a metal wiring formed on a transparent substrate;an inorganic insulating film and an organic insulating film formed on the metal wiring; anda first transparent electrode and a second transparent electrode having a stripe slit structure formed on the inorganic insulating film and the organic insulating film so that the first transparent electrode and the second transparent electrode are opposite to each other through an interlayer insulating film, liquid crystals being driven by applying an electric field across the first electrode and the second electrode, wherein:an output from a thin film transistor is electrically connected to the first transparent electrode or the second electrode through a contact hole penetrating through the inorganic insulating film or the organic insulating film;a film thickness of the organic insulating film on the metal wiring is made thicker than a film thickness of the organic insulating film on a pixel display region including the contact hole, and a ...

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Номер записи: 110
27-02-2014 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20140055701A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro, YAMAMOTO Masanao
Принадлежит: Japan Display Inc.

In a liquid crystal display device including: TFT substrate; color filter; counter electrode; interlayer insulation film; pixel electrode; alignment film; liquid crystal layer; counter substrate; and Si semiconductor layer. The color filter, counter electrode, interlayer insulation film, pixel electrode, and alignment film being formed on the side where the TFT substrate is provided, the counter substrate being disposed in facing relation to the TFT substrate with the liquid crystal layer put between the counter substrate and TFT substrate, the Si semiconductor layer is formed between the pixel electrode and interlayer insulation film. Even when light from a backlight is absorbed by the color filter and sufficient light cannot reach the alignment film, electric charges accumulated on the alignment film can escape to the pixel electrode in an early stage by the Si semiconductor layer formed under the alignment film, thereby capable of erasing the afterimage in an early stage. 1. A liquid crystal display device comprising: a TFT substrate; a color filter; a counter electrode; an interlayer insulation film; a pixel electrode; an alignment film; a liquid crystal layer; a counter substrate; and a Si semiconductor layer ,the color filter, the counter electrode, the interlayer insulation film, the pixel electrode, and the alignment film being formed on the side where the TFT substrate is provided,the counter substrate being disposed in facing relation to the TFT substrate with the liquid crystal layer put between the counter substrate and the TFT substrate,wherein the Si semiconductor layer is formed between the pixel electrode and the interlayer insulation layer.2. A liquid crystal display device comprising: a TFT substrate; a color filter , a counter electrode; an interlayer insulation film; a pixel electrode; an alignment film; a liquid crystal layer; a counter substrate; and a Si semiconductor layer ,the color filter, the counter electrode, the interlayer insulation ...

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Номер записи: 111
06-01-2022 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20220004061A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, Matsumori Masaki, Matsumoto Yuko, SONODA Hidehiro, TOMIOKA Yasushi, Uchino Shoichi
Принадлежит:

A liquid crystal display device includes a TFT substrate having a first alignment film and an opposing substrate having a second alignment film with liquid crystals sandwiched therebetween. One of the first and second alignment films, comprises a first polyimide produced via polyamide acid ester containing cyclobutane as a precursor and a second polyimide produced via polyamide acid as a precursor. The polyamide acid has a higher polarity than that of the polyamide acid ester. The one of the first and second alignment films is responsive to photo-alignment. A first side of the one of the first and second alignment films is adjacent to the liquid crystals, and a second side thereof is closer to one of the TFT substrate and the counter substrate than the first side. The first side contains more of the first polyimide and less of the second polyimide than the second side. 1. A method for fabricating a liquid crystal display device including a TFT substrate having a photo-alignment film formed over a pixel electrode and a common electrode;an opposing substrate which faces the TFT substrate; anda liquid crystal layer sandwiched between the TFT substrate and the opposing substrate;whereinthe method comprising steps of:forming a mixture material that is a material of the photo-alignment film on the TFT substrate,imidizing the mixture material so that a precursor contained in the mixture material is imidized,irradiating a polyimide formed from the imidized precursor with ultraviolet light for photo-alignment without heating; andheating the polyimide to form the alignment film after the irradiation.2. The method for fabricating a liquid crystal display device according to claim 1 ,wherein an irradiance level of the ultraviolet light is from 2000 to 5000 mJ/cm2, a temperature at which the TFT substrate and the opposing substrate are heated after the ultraviolet light irradiation is not less than 230° C., and an interval after the ultraviolet light irradiation until heating ...

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Номер записи: 112
01-01-2015 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20150002802A1
Автор: KANEKO Toshiki, KUNIMATSU Noboru, Matsumori Masaki, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film. 1. A liquid crystal display device comprising:a TFT substrate and a counter substrate;a liquid crystal layer disposed between the TFT substrate and the counter substrate;a plurality of scanning lines and a plurality of signal lines formed on the TFT substrate;a first insulation film formed above the plurality of scanning lines, the plurality of signal lines, and the TFT substrate;a first electrode formed on the first insulation film;a second insulation film formed on the first insulation film and the first electrode;a second electrode formed on the second insulation film; andan alignment film formed on the second electrode and the second insulation film,wherein the liquid crystal layer is driven by an electric field generated between the first electrode and the second electrode,wherein the second insulation film has a first portion disposed above the plurality of scanning lines or the plurality of signal lines;a distance from the TFT substrate to an upper surface of the second insulation film at the first portion is greater than a distance from the TFT substrate to an upper surface of the second electrode,wherein the alignment film comprising;a first part subject to photo-alignment treatment formed by a first precursor,a second part ...

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Номер записи: 113
27-01-2022 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF MANUFACTURING THAT

Номер: US20220026768A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first alignment film is a photo alignment film ,and a thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy formula (2), 1. A liquid crystal display device comprising:a first substrate;a second substrate opposed to the first substrate;a first projection and a second projection provided between the first substrate and the second substrate;alignment films provided on the first substrate and the second substrate; anda liquid crystal layer provided between the alignment films,wherein the alignment films have a first alignment film provided on the first substrate and a second alignment film provided on the second substrate,wherein the first projection is covered by either the first alignment film or the second alignment film,wherein the second projection is covered by either the first alignment film or the second alignment film,wherein a height of the first projection is higher than a height of the second projection,wherein a top surface of the first projection is a flat surface,wherein a thickness of one of the alignment films on the top surface of the first projection is thicker than a thickness of one of the alignment films other than the top surface of the first projection,wherein a thickness of one of the alignment films on the top surface of the second projection is thicker than a thickness of one of the alignment films other than the top surface of the second projection, andwherein the thickness of one of the alignment films other than the top surface of the first projection is equal to the ...

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Номер записи: 114
14-01-2016 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20160011465A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, Matsumori Masaki, Matsumoto Yuko, SONODA Hidehiro, TOMIOKA Yasushi, Uchino Shoichi
Принадлежит:

A liquid crystal display device includes a TFT substrate having a first alignment film and an opposing substrate having a second alignment film with liquid crystals sandwiched therebetween. One of the first and second alignment films, comprises a first polyimide produced via polyamide acid ester containing cyclobutane as a precursor and a second polyimide produced via polyamide acid as a precursor. The polyamide acid has a higher polarity than that of the polyamide acid ester. The one of the first and second alignment films is responsive to photo-alignment. A first side of the one of the first and second alignment films is adjacent to the liquid crystals, and a second side thereof is closer to one of the TFT substrate and the counter substrate than the first side. The first side contains more of the first polyimide and less of the second polyimide than the second side. 1. A liquid crystal display device comprising:a TFT substrate in which an alignment film is formed over a pixel including a pixel electrode and a TFT;an opposing substrate which faces the TFT substrate and in which an alignment film is formed,liquid crystals sandwiched between the alignment film of the TFT substrate and the alignment film of the opposing substrate;wherein a first alignment films, either one of the alignment film of the TFT substrate and the alignment film of the opposing substrate, comprising a first polyimide produced by a first compound containing cyclobutane as a precursor and a second polyimide produced by a second compound as a precursor,the second compound having higher polarity than that of the first compound,a photo-alignment process is applied to the first alignment film,a first side of the first alignment film is adjacent to the liquid crystals, a second side of the first alignment film is closer to one of the TFT substrate and the counter substrate than the first side,wherein the first side contains more the first polyimide than the second side contains, the second side ...

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Номер записи: 115
15-01-2015 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD FOR THE SAME, AND LIQUID CRYSTAL ALIGNMENT REGULATION FORCE DECISION METHOD

Номер: US20150015840A1
Автор: HYODO Yosuke, Imanishi Yasuo, KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

A liquid crystal display device includes a TFT substrate and a counter substrate on each of which an alignment film is formed and a liquid crystal interposed and held between the alignment films of the TFT and counter substrate, wherein the alignment film is made of a material capable of applying liquid crystal alignment regulation force by polarized light irradiation, a convex structure is formed on the TFT substrate or the counter substrate, and the alignment film is applied the liquid crystal alignment regulation force to a surface of a region ranging from the periphery of the convex structure to the vicinity of an inclined part of the convex structure and is not applied the liquid crystal alignment regulation force to a surface of the inclined part of the convex structure. 1. A liquid crystal display device comprising: a TFT substrate that an alignment film is formed on a pixel which includes a pixel electrode and a TFT; a counter substrate which is arranged so as to face the TFT substrate and on the TFT substrate side of which an alignment film is formed; and a liquid crystal which is interposed and held between the alignment film of the TFT substrate and the alignment film of the counter substrate , whereinthe alignment film is made of a material capable of applying liquid crystal alignment regulation force by polarized light irradiation,a convex structure is formed on the TFT substrate or the counter substrate, andthe alignment film is applied the liquid crystal alignment regulation force to a surface of a region ranging from the periphery of the convex structure to the vicinity of an inclined part of the convex structure and is not applied the liquid crystal alignment regulation force to a surface of the inclined part of the convex structure.2. The liquid crystal display device according to claim 1 , wherein an inclination angle of the convex structure is larger than about 85 degrees.3. The liquid crystal display device according to claim 1 , wherein the ...

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Номер записи: 116
16-01-2020 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF MANUFACTURING THAT

Номер: US20200019021A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first alignment film is a photo alignment film, and thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy formula (2), 1. A liquid crystal display device comprising:a first substrate;a first alignment film on the first substrate;a second substrate;a second alignment film on the second substrate;a liquid crystal layer between the first alignment film and the second alignment film; anda projecting portion on the second substrate including a bottom surface and a top surface,wherein the second alignment film is a photo alignment film, and {'br': None, 'd2 Подробнее

Номер записи: 117
17-04-2014 дата публикации

Liquid Crystal Display Device and manufacturing Method Thereof

Номер: US20140104554A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, Matsumoto Yuko, SONODA Hidehiro
Принадлежит:

A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film. 1. A liquid crystal display device including a liquid crystal display panel including pixels arranged in a dot matrix array ,the liquid crystal display panel including a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate,the first substrate including a first electrode, a second electrode, an insulation layer disposed between the first electrode and the second electrode, and a first alignment film disposed on the second electrode, andthe second substrate including an organic planarized layer and a second alignment film formed on the organic planarized layer,wherein the liquid crystal layer is configured to be controlled by an electric field which is generated between the first electrode and the second electrode,wherein the first electrode and the second electrode are transparent, and the first electrode is a planar shape and the second electrode includes a plurality of slits,wherein the first alignment film and the second alignment film comprise, respectively, photo alignment films formed by irradiating insulating films with linear polarized light, andwherein a thickness ...

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Номер записи: 118
25-01-2018 дата публикации

VARNISH FOR PHOTO ALIGNMENT FILM AND LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20180022874A1
Автор: Hirota Takenori, KUNIMATSU Noboru, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит: Japan Display Inc.

According to one embodiment, a varnish for a photo alignment film includes an imidization promotor and a first polyamic acid-based compound in an organic solvent. The first polyamic acid-based compound is a polyamic acid or a polyamic acid ester. The imidization promotor has skeleton containing no primary amino group and no secondary amino group. The first polyamic acid-based compound has terminal skeletons containing no primary amino group. 1. A varnish for a photo alignment film comprising an imidization promotor and a first polyamic acid-based compound in an organic solvent , the first polyamic acid-based compound being a polyamic acid or a polyamic acid ester ,whereinthe imidization promotor has skeleton containing no primary amino group and no secondary amino group, and the first polyamic acid-based compound has terminal skeletons containing no primary amino group.2. The varnish according to claim 1 , wherein the imidization promotor is a pyridine-based compound claim 1 , a quinoline-based compound claim 1 , an isoquinoline-based compound claim 1 , an imidazole-based compound claim 1 , a benzimidazole-based compound or a tertiary amine.3. The varnish according to claim 1 , wherein the imidization promotor comprises an amine-reactive skeleton.4. The varnish according to claim 3 , wherein the amine-reactive skeleton comprises a halogen group claim 3 , a diazo group claim 3 , a carboxyl group claim 3 , a hydroxyl group claim 3 , an isocyanate group or an acid anhydride skeleton.5. The varnish according to claim 1 , wherein the imidization promotor has a molecular weight of 130 or more.8. The varnish according to claim 1 , wherein the terminal skeletons comprise an imide skeleton claim 1 , an amide skeleton claim 1 , a urea skeleton claim 1 , a tertiary amino skeleton claim 1 , an azo bond or a carboxyl group.9. The varnish according to claim 1 , further comprising a second polyamic acid-based compound claim 1 , which is a polyamic acid or a polyamic acid ester ...

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Номер записи: 119
26-01-2017 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20170023814A1
Автор: KANEKO Toshiki, KUNIMATSU Noboru, Matsumori Masaki, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film. 1. A liquid crystal display device comprising:a TFT substrate and a counter substrate;a liquid crystal layer disposed between the TFT substrate having a pixel electrode and the counter substrate having an overcoat film;a spacer formed on the overcoat film and contacting with the TFT substrate; andan alignment film formed on the spacer and the overcoat film,wherein the spacer has a first portion; the overcoat film has a second portion facing the pixel electrode;a distance from the counter substrate to a protruding surface of the spacer at the first portion is greater than a distance from the counter substrate to a surface of the overcoat film at the second portion,wherein the alignment film comprises a first part subjected to photo-alignment treatment formed by a first precursor,wherein the alignment film comprises a second part formed by a second precursor, andwherein the first part is disposed between the second part and the liquid crystal layer,when the thickness of the second part is defined as p1 and the thickness of the first part is defined as p2, p2/p1 over the first portion is smaller than p2/p1 over the second portion.2. The liquid crystal display device according to claim 1 , wherein the TFT substrate having a plurality of ...

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Номер записи: 120
04-02-2016 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20160033825A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

An alignment film is given a 2-layer structure comprising a photoalignment film that is photoalignable and a low-resistivity alignment film whose resistivity is smaller than that of the photoalignment film. The photoalignment film is formed by a polyimide whose precursor is polyamide acid alkyl ester, the number molecular weight of the photoalignment film is large, and the stability of alignment of the photoalignment film by photoalignment is excellent. The low-resistivity alignment film is formed by a polyimide whose precursor is polyamide acid, the number molecular weight of the low-resistivity alignment film is small, and the resistivity of the low-resistivity alignment film is small. The 2-layer structure alignment film can be maintaining an excellent photoalignment characteristic, so DC afterimages can be controlled. 1. An alignment film varnish for a liquid crystal display device comprising:a first compound including photodegradable polymer, anda second compound including polyamide acid;wherein the second compound has higher affinity with an Indium Tin Oxide than that of the first compound.2. The alignment film varnish according to claim 1 ,wherein the alignment film varnish is utilized for forming a photo alignment film.3. The alignment film varnish according to claim 1 ,wherein the second compound has higher affinity with an organic passivation film of the liquid crystal display device than that of the first compound.4. The alignment film varnish according to claim 1 ,wherein the photodegradable polymer is a polyamide acid ester.5. The alignment film varnish according to claim 1 ,wherein a resistance of imidized first compound is higher than a resistance of imidized second compound.6. The alignment film varnish according to claim 1 , wherein a molecular weight of the first compound is larger than that of the second compound.7. A liquid crystal display device comprising:an alignment film formed by imidizing an alignment film varnish; andan electrode having a ...

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Номер записи: 121
08-02-2018 дата публикации

Liquid crystal display device and method of manufacturing that

Номер: US20180039140A1
Автор: Chikae Matsui, Hidehiro Sonoda, Noboru Kunimatsu
Принадлежит: Japan Display Inc, Panasonic Liquid Crystal Display Co Ltd

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first alignment film is a photo alignment film, and a thickness “d 2 ” of the second alignment film over the projecting portion and a film thickness “d 1 ” of a portion of the first alignment film facing the projecting portion satisfy formula (2), d2<d1   (2).

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Номер записи: 122
07-02-2019 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20190041707A1
Автор: HYODO Yosuke, KUNIMATSU Noboru, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

In a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment film material can easily flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole. 1. A display device comprising:a thin film transistor,an insulating film covering the thin film transistor,a first electrode connected to the thin film transistor, anda second electrode forming an electric field with the first electrode,wherein the insulating film has a through hole,the first electrode and the thin film transistor are connected through the through hole,an end of the second electrode is located in the through hole.2. The display device according to claim 1 ,wherein the second electrode does not connect to the thin film transistor.3. The display device according to claim 1 ,wherein an interlayer insulating film is provided between the first electrode and the second electrode.4. The display device according to claim 1 ,wherein the thin film transistor, the insulating film, the first electrode and the second electrode are provided on a first substrate, anda second substrate opposes to the first substrate.5. The display device according to claim 4 ,wherein the thin film transistor has a source electrode, andthe first electrode connects the source electrode.6. The display device according to ...

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Номер записи: 123
26-02-2015 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20150055070A1
Автор: HYODO Yosuke, Imanishi Yasuo, KUNIMATSU Noboru, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит: Japan Display Inc.

A TFT substrate and a counter substrate are bonded via a seal material. Alignment films are applied to entire surfaces of the TFT substrate and the counter substrate so as to realize even thickness of the alignment film. This allows a display region to be formed up to the area around the seal material. The alignment film is photo-alignment processed. An organic film formed of the material which is not photo-aligned is interposed between the alignment film and the seal material. High bonding strength between the organic film and the seal material improves reliability of a seal portion as well as reduces a frame region. 1. A liquid crystal display device having a TFT substrate with a first alignment film and a counter substrate with a second alignment film bonded via a seal material , and a liquid crystal interposed between the TFT substrate and the counter substrate ,wherein the first alignment film is applied to an entire surface of the TFT substrate, and an organic film that is different from the first alignment film is interposed between the first alignment film and the seal material at a side of the TFT substrate;the second alignment film is applied to an entire surface of the counter substrate, and an organic film that is different from the second alignment film is interposed between the second alignment film and the seal material at a side of the counter substrate; andthe first alignment film and the second alignment film are photo-alignment processed, and the organic film contains no component to be photo-aligned.2. A liquid crystal display device having a TFT substrate with a first alignment film and a counter substrate with a second alignment film bonded via a seal material , a liquid crystal interposed between the TFT substrate and the counter substrate , and a distance between the TFT substrate and the counter substrate regulated by a columnar spacer ,wherein the first alignment film is applied to an entire surface of the TFT substrate, and an organic film ...

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Номер записи: 124
26-02-2015 дата публикации

Liquid Crystal Display Device

Номер: US20150055071A1
Автор: HYODO Yosuke, Igeta Koichi, KANEKO Toshiki, KUNIMATSU Noboru, SONODA Hidehiro
Принадлежит:

A display device includes a first substrate, a second substrate and liquid crystals therebetween, the first substrate having a flat portion, an alignment film, and a concavo-convex pedestal formed in a pixel region, wherein the concavo-convex pedestal having at least two convex portions and recessed portions, and the at least two convex portions of the concavo-convex pedestal are at a position lower than a position of the flat portion. A thickness of the alignment film on the convex portions is less than a thickness of the alignment film on the recessed portions, and a second substrate has a columnar spacer which contacts the at least two convex portions of the concavo-convex pedestal. 1. A display device comprising:a first substrate, a second substrate and liquid crystals therebetween;the first substrate including a flat portion, an alignment film, and a concavo-convex pedestal formed in a pixel region;the concavo-convex pedestal having at least two convex portions and recessed portions;the at least two convex portions of the concavo-convex pedestal are at a position lower than a position of the flat portion;a thickness of the alignment film on the convex portions is less than a thickness of the alignment film on the recessed portions; anda second substrate has a columnar spacer which contacts the at least two convex portions of the concavo-convex pedestal.2. A display device according to claim 1 ,wherein the concavo-convex pedestal has at least three convex portions; andwherein a top end of the columnar spacer is in contact with the at least three convex portions of the concavo-convex pedestal.3. A display device according to claim 1 , wherein an angle of inclination at the inclined portion in the cross sectional shape of the convex portion is at least 3 degrees and no greater than 45 degrees or less.4. A display device according to claim 1 , wherein the angle of inclination at the inclined portion in the cross sectional shape of the convex portion is at least 6 ...

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Номер записи: 125
13-02-2020 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20200050041A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

A liquid crystal display device includes a TFT substrate and a counter substrate and a liquid crystal layer sandwiched therebetween. A scanning line, a video signal line, a thin film transistor connected to the scanning line and the video signal line, a pixel electrode connected to the thin film transistor, and a counter electrode are formed on the TFT substrate, and a columnar spacer formed on the counter substrate. The pixel and counter electrodes are transparent, and the liquid crystal layer is controlled by an electric field generated between the pixel and counter electrodes. The counter electrode contacts with a metal line having a first part which is extended in parallel with the scanning line and a second part which is extended in parallel with the video signal line, a width of the first part of the metal line being narrower than a width of the scanning line. 1. A liquid crystal display device comprising:a TFT substrate and a counter substrate;a liquid crystal layer sandwiched between the TFT substrate and the counter substrate;a first metal line on the TFT substrate;a second metal line intersecting with the first metal line;a thin film transistor connected to the first metal line and the second metal line,an organic passivation film formed over the first metal line, the second metal line and the thin film transistor;a pixel electrode connected to the thin film transistor on the organic passivation film;a counter electrode formed opposite to the pixel electrode with an interlayer insulation film;a third metal line formed on the counter electrode along the first metal line; anda columnar spacer formed on the counter substrate;whereinthe pixel electrode and the counter electrode are transparent,the counter electrode is electrically connected to the third metal line,a width of the third metal line at an intersection of the first metal line and the second metal line is wider than a width of the third metal line between the intersection and an adjacent ...

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Номер записи: 126
05-03-2015 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20150062515A1
Автор: HYODO Yosuke, KUNIMATSU Noboru, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

The invention provides a liquid crystal display device which is highly reliable even with a slim frame area. Ina liquid crystal display device having a display area and a frame area, the frame area includes, in an area close to the display area, a flat portion where an organic insulation film, a transparent conductive film, and an alignment film are stacked in this order and, in an area away from the display area, a groove structure formed in the organic insulation film, the groove structure being continuous surrounding the display area. The organic insulation film is less wettable than the transparent conductive film by the alignment film ink. 1. A liquid crystal display device including a first substrate , a second substrate and a seal for sealing liquid crystals between the first substrate and the second substrate , the first substrate having a display area in a center portion thereof and a frame area surrounding the display area as seen from perpendicularly above ,wherein the frame area of the first substrate has a flat portion formed in an area close to the display area, the flat portion including a film stack which includes an organic insulation film, a transparent conductive film, and an alignment film stacked in this order, and a groove structure formed in the organic insulation film in an area away from the display area, the groove structure being continuous surrounding the display area.2. The liquid crystal display device according to claim 1 , wherein the groove structure includes a groove formed in the organic insulation film to be continuous from an edge portion of the transparent conductive film.3. The liquid crystal display device according to claim 1 , wherein the groove structure includes a groove formed to be continuous from a flat portion of the organic insulation film claim 1 , the flat portion of the organic insulation film being provided claim 1 , in the area away from the display area claim 1 , to be continuous from the end portion of the ...

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Номер записи: 127
28-02-2019 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20190064619A1
Автор: ISHIGAKI Toshimasa, SONODA Hidehiro, TOMIOKA Yasushi, UETA Sumito
Принадлежит:

A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole. 1. A liquid crystal display device comprising:a transistor substrate including;a thin film transistor having a source electrode,a gate signal line driving the thin film transistor,an organic insulating film formed on the thin film transistor and having a through hole which has a side wall,a common electrode formed on the organic insulating film,an interlayer insulating film formed on the common electrode,a pixel electrode formed on the interlayer insulating film, electrically connected to the source electrode via the through hole, and formed of a conductive material,a counter substrate, anda liquid crystal layer sandwiched between the transistor substrate and the counter substrate,wherein the through hole formed in the organic insulating film,the through hole has a cross-section in which a top face is defined on the side of the counter substrate and a bottom face is defined on the side of the source electrode,in a cross-section view, the top face of the through hole is greater than a width of the source electrode.2. The liquid crystal display device according to claim 1 , further ...

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Номер записи: 128
08-03-2018 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20180067350A1
Автор: Hirota Takenori, KANAYA Yasuhiro, KANEKO Toshiki, SONODA Hidehiro
Принадлежит:

A reliability of seal portion of a liquid crystal display device can be improved by the following structure. A liquid crystal display device includes: a TFT substrate which includes a display region and a terminal part, and has an inorganic insulating film formed on an organic passivation film and an alignment film formed over the inorganic insulating film; a counter substrate, the TFT substrate and the counter substrate bonded together by a sealing material formed at a seal part surrounding the display region; and a liquid crystal sealed inside. At the seal part, a transparent conductive oxide film is formed between the inorganic insulating film and the alignment film. The transparent conductive oxide film exists inside an edge of the TFT substrate and hence, the edge of the TFT substrate is free of the transparent conductive oxide film. 1. A display device having a display area and a terminal area comprising:a first substrate has an inorganic film, a first organic film formed over the inorganic film and a second organic film formed over the first organic film; anda second substrate opposing to the first substrate,whereinthe display area is formed on the first substrate where the second substrate overlaps,the terminal area is formed on the first substrate where the second substrate does not overlap,a peripheral area is formed around the display area, anda transparent conductive film is formed between the first organic film and the second organic film in the peripheral area corresponding to at least two sides, except a side adjacent to the terminal area, of the display area.2. The display device according to claim 1 , whereinthe first organic film has a through hole in the peripheral area, andthe transparent conductive film is formed between the through hole and the display area, in a plan view.3. The display device according to claim 2 , whereinthe inorganic film is exposed at a bottom of the through hole.4. The display device according to claim 2 , further ...

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Номер записи: 129
11-03-2021 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20210072603A1
Автор: HYODO Yosuke, KUNIMATSU Noboru, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

In a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment film material can easily flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole. 1. A display device comprising:a first substrate,a source electrode of a thin film transistor provided on the first substrate,an organic insulating film covering the source electrode,an inorganic insulating film provided on the organic insulating film,a pixel electrode connected to the source electrode,a common electrode opposed to the pixel electrode, andwherein the organic insulating film covers an end of the source electrode,the inorganic insulating film contacts the source electrode between a contact portion where the pixel electrode and the source electrode are connected and the organic insulating film,in a sectional view, the organic insulating film between the inorganic insulating film and the source electrode is inclined with respect to the first substrate, anda portion of the organic insulating film in contact with the source electrode has a steepest angle in the organic insulating film between the inorganic insulating film and the source electrode.2. The display device according to claim 1 ,wherein the inorganic insulating film is provided between the pixel electrode and the common electrode.3 ...

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Номер записи: 130
11-03-2021 дата публикации

Liquid crystal display device

Номер: US20210072606A1
Автор: Hidehiro Sonoda, Sumito Ueta, Toshimasa Ishigaki, Yasushi Tomioka
Принадлежит: Japan Display Inc

A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole.

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Номер записи: 131
16-03-2017 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF MANUFACTURING THAT

Номер: US20170075172A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first alignment film is a photo alignment film, and a thickness “d” of the second alignment film over the projecting portion and a film thickness “d” of a portion of the first alignment film facing the projecting portion satisfy formula (1) and (2): 1. A liquid crystal display device comprising:a first substrate;a first alignment film formed on the first substrate;a second substrate;a second alignment film formed on the second substrate;a liquid crystal layer sandwiched between the first alignment film and the second alignment film;a projecting portion formed on the second substrate;a facing portion formed on the first substrate;a first electrode formed in a pixel region, the first electrode formed between the first alignment film and the first substrate; andan insulation film formed between the first substrate and the liquid crystal layer,wherein the first electrode and the insulation film is covered by the first alignment film,wherein the facing portion faces the projecting portion,wherein the first alignment film or the second alignment film is a photo alignment film, and{'b': 2', '1, 'claim-text': [{'br': None, '0 nm Подробнее

Номер записи: 132
16-03-2017 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20170075179A1
Автор: ISHIGAKI Toshimasa, SONODA Hidehiro, TOMIOKA Yasushi, UETA Sumito
Принадлежит:

A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole. 1. A liquid crystal display device comprising: a thin film transistor,', 'an organic insulating film formed on the thin film transistor,', 'a common electrode formed on the organic insulating film,', 'an interlayer insulating film formed so as to cover the common electrode,', 'a pixel electrode formed on the interlayer insulating film,', 'a source electrode of the thin film transistor, 'a transistor substrate having pixels each including,'}a counter substrate having a light shielding film, andliquid crystal sandwiched between the transistor substrate and the counter substrate,wherein the organic insulating film and the interlayer insulating film have a through-hole,wherein the source electrode electrically connects to the pixel electrode via the through-hole, andwherein the pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole.2. The liquid crystal display device according to claim 1 , wherein the common electrode has a slit.3. The liquid crystal display device according to claim 2 , wherein the slit ...

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Номер записи: 133
26-03-2015 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20150085231A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, Matsumoto Yuko, SONODA Hidehiro
Принадлежит:

A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film. 1. A liquid crystal display device including a liquid crystal display panel including pixels arranged in a dot matrix array ,the liquid crystal display panel including a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate,the first substrate including a first electrode, a second electrode, an insulation layer disposed between the first electrode and the second electrode, and a first alignment film disposed on the second electrode, andthe second substrate including an organic planarized layer and a second alignment film formed on the organic planarized layer,wherein the liquid crystal layer is configured to be controlled by an electric field which is generated between the first electrode and the second electrode,wherein the first electrode and the second electrode are transparent, and the first electrode is a planar shape and the second electrode includes at least one linear electrode part,wherein the first alignment film and the second alignment film comprise, respectively, a photo alignment film formed by irradiating an insulating film with linear polarized light, ...

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Номер записи: 134
22-03-2018 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20180081212A1
Автор: KANEKO Toshiki, KUNIMATSU Noboru, Matsumori Masaki, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film. 1. A liquid crystal display device comprising:a TFT substrate and a counter substrate;a liquid crystal layer disposed between the TFT substrate having a pixel electrode and the counter substrate having an overcoat film;a spacer on the overcoat film; andan alignment film of the counter substrate on the spacer and the overcoat film,wherein an end face of the spacer has a first portion;wherein the overcoat film has a second portion facing the pixel electrode;a distance from the counter substrate to the spacer at the first portion is greater than a distance from the counter substrate to a surface of the overcoat film at the second portion,wherein the alignment film comprises a first part subjected to photo-alignment treatment formed by a first precursor,wherein the alignment film comprises a second part formed by a second precursor, andwherein the first part is disposed between the second part and the liquid crystal layer,when the thickness of the second part is defined as p1 and the thickness of the first part is defined as p2, p2/p1 over the first portion is smaller than p2/p1 over the second portion.2. The liquid crystal display device according to claim 1 , wherein the TFT substrate comprises a plurality of signal lines claim 1 , ...

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Номер записи: 135
24-03-2016 дата публикации

Liquid crystal display device and material for alignment film

Номер: US20160085119A1
Автор: Hidehiro Sonoda, Noboru Kunimatsu, Takenori HIROTA, Yasushi Tomioka, Yosuke Hyodo
Принадлежит: Japan Display Inc

A liquid crystal display device including an alignment film which has been optically aligned is configured that the liquid crystal has negative dielectric anisotropy, an absolute value of which is equal to or smaller than 5. The alignment film is subjected to an optical alignment process to exhibit the optical alignment property, and includes a first film located at a side in contact with the liquid crystal, and a second film below the first film, which is not optically aligned to have no alignment property. The alignment film is formed by applying a mixture of a first material for forming the first film and a second material for forming the second film to the substrate. The first material for the alignment film accounts for 10 wt. % or more and less than 40 wt. % of a total weight of the first and the second materials.

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Номер записи: 136
28-03-2019 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20190094627A1
Автор: Hirota Takenori, KOSUGE Masahiro, KUNIMATSU Noboru, SONODA Hidehiro, TOMOKA Yasushi
Принадлежит: Japan Display Inc.

According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate disposed to oppose the first substrate, a layer of liquid crystal located between the first substrate and the second substrate, and an alignment film disposed on the first substrate so as to be in contact with the layer of the liquid crystal. The liquid crystal has a refractive-index anisotropy Δn of 0.11 or more, the layer of the liquid crystal has a thickness d of 2.5 μm or less, and a product Δnd of the refractive-index anisotropy Δn and the thickness d is 0.20 or more but 0.31 or less. The transmissivity of light having a wavelength of 450 nm in the first substrate and the alignment film is 85% or more but 97% or less. 1. A liquid crystal display device comprising:a first substrate;a second substrate disposed to oppose the first substrate;a layer of liquid crystal located between the first substrate and the second substrate; andan alignment film disposed on the first substrate so as to be in contact with the layer of the liquid crystal,the liquid crystal having a refractive-index anisotropy Δn of 0.11 or more, the layer of the liquid crystal having a thickness d of 2.5 μm or less, and a product Δnd of the refractive-index anisotropy Δn and the thickness d being 0.20 or more but 0.31 or less, anda transmissivity of light having a wavelength of 450 nm in the first substrate and the alignment film being 85% or more but 97% or less.2. The device of claim 1 , whereinthe alignment film contains a first polyimide which has a skeleton originated from aromatic tetracarboxylic acid as a tetracarboxylic acid component, or a polymer compound which has an azobenzene skeleton, a cinnamate skeleton or a stilbene skeleton.3. A liquid crystal display device comprising:a first substrate;a second substrate disposed to oppose the first substrate;a layer of liquid crystal located between the first substrate and the second substrate; andan alignment film disposed on the first ...

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Номер записи: 137
28-03-2019 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20190094628A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

An alignment film is given a 2-layer structure comprising a photoalignment film that is photoalignable and a low-resistivity alignment film whose resistivity is smaller than that of the photoalignment film. The photoalignment film is formed by a polyimide whose precursor is polyamide acid alkyl ester, the number molecular weight of the photoalignment film is large, and the stability of alignment of the photoalignment film by photoalignment is excellent. The low-resistivity alignment film is formed by a polyimide whose precursor is polyamide acid, the number molecular weight of the low-resistivity alignment film is small, and the resistivity of the low-resistivity alignment film is small. The 2-layer structure alignment film can be maintaining an excellent photoalignment characteristic, so DC afterimages can be controlled. 1. A liquid crystal display device comprising:an alignment film formed by imidizing an alignment film varnish including a first compound and a second compound; andan electrode having a surface of Indium Tin Oxide;whereinthe alignment film has a first surface contacting a liquid crystal layer, and a second surface contacting the electrode,the first compound includes photodegradable polymer,the second compound includes polyamide acid,the alignment film includes a first polymer formed by imidizing the first compound and a second polymer formed by imidizing the second compound, andthe first polymer and the second polymer are phase-separated so as to dispose the first polymer on the first surface side and the second polymer on the second surface side, andthe pretilt angle of the liquid crystal layer is equal to or less than 0.5 degrees according to measurement using the crystal rotation method.2. The liquid crystal display device according to claim 1 , further comprising a liquid crystal layer claim 1 , wherein claim 1 ,the liquid crystal layer is driven at IPS mode, andthe alignment film is a photo alignment film.3. The liquid crystal display device ...

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Номер записи: 138
30-04-2015 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20150116623A1
Автор: HYODO Yosuke, KUNIMATSU Noboru, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

In a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment film material can easily flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole. 1. A liquid crystal display device comprising:a TFT substrate including an organic passivation film, a common electrode formed on the organic passivation film, an insulating film formed on the common electrode, a pixel electrode formed on the insulating film, and a TFT having a source electrode which is electrically connected to the pixel electrode through a through hole that is formed in the organic passivation film and the interlayer insulating film,a counter substrate; anda liquid crystal layer which is interposed between the TFT substrate and the counter substrate,wherein the through hole has an upper base and a lower base in the organic passivation film,wherein a diameter of the upper base of the through hole formed in the organic passivation film is greater than a diameter of the lower base,wherein a taper angle of the upper base of the through hole formed in the organic passivation film is smaller than a taper angle of the lower base.2. The liquid crystal display device according to claim 1 ,wherein if D is a depth of the through hole formed in the organic passivation film, a taper angle at a ...

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Номер записи: 139
28-04-2016 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20160116773A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro, Yamamoto Takashi
Принадлежит:

An IPS system liquid crystal display device is provided to prevent reliability for a seal portion from lowering, which is caused by the fact that an overcoat film at a portion where an alignment film is not present is deteriorated by ultraviolet light during optical alignment process. An alignment film subjected to optical alignment is formed above each surface of a TFT substrate and of a counter substrate , the alignment film on the side of the TFT substrate is not formed in the seal portion, and a sealant is bonded to an inorganic insulating film . On the side of the counter substrate , the alignment film is formed on an overcoat film and the sealant is bonded to the alignment film . Since the ultraviolet light is not radiated directly to the overcoat film when optical alignment is performed on the alignment film , the overcoat film can be prevented from deterioration and, accordingly, intrusion of moisture from the deteriorated portion of the overcoat film can be prevented. 1. A liquid crystal display device comprising:a TFT substrate having a first alignment film formed on an inorganic film;a counter substrate having a second alignment film formed on the overcoat film;a seal portion including a sealant and formed in a peripheral region outside a display region; andthe TFT substrate being bonded to the counter substrate by the sealant in the peripheral region,wherein the TFT substrate has a first region, a second region and a third region in the peripheral region,the third region is outside the display region, the second region is outside the third region, the first region is outside the second region,the first alignment film is formed on the first region and the third region,the first alignment film isn't formed on the second region,the seal portion contacts the first region, the second region, and the third region.2. The liquid crystal display device according to claim 1 ,wherein the seal portion has an inside edge and an outside edge in a width direction of ...

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Номер записи: 140
25-04-2019 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20190121188A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

A liquid crystal display device includes a TFT substrate and a counter substrate and a liquid crystal layer sandwiched therebetween. A scanning line, a video signal line, a thin film transistor connected to the scanning line and the video signal line, a pixel electrode connected to the thin film transistor, and a counter electrode are formed on the TFT substrate, and a columnar spacer formed on the counter substrate. The pixel and counter electrodes are transparent, and the liquid crystal layer is controlled by an electric field generated between the pixel and counter electrodes. The counter electrode contacts with a metal line having a first part which is extended in parallel with the scanning line and a second part which is extended in parallel with the video signal line a width of the first part of the metal line being narrower than a width of the scanning line. 1. A liquid crystal display device comprising:a TFT substrate and a counter substrate;a liquid crystal layer sandwiched between the TFT substrate and the counter substrate;a first metal line functioning as a scanning line, a second metal line functioning as a video signal line, a thin film transistor connected to the first metal line and the second metal line, a pixel electrode connected to the thin film transistor, and a counter electrode formed on the TFT substrate; anda columnar spacer formed on the counter substrate;wherein the pixel electrode and the counter electrode are transparent, and the liquid crystal layer is controlled by an electric field generated between the pixel electrode and the counter electrode;wherein the counter electrode contacts with a third metal line,wherein the third metal line extends in parallel with the second metal line, and extends intersecting a plurality of the second metal lines in a plan view; andwherein the columnar spacer overlaps with an intersection of the first metal line and the second metal line, and the third metal line, andwherein an alignment film is disposed ...

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Номер записи: 141
25-04-2019 дата публикации

Liquid crystal display device and method of manufacturing that

Номер: US20190121203A1
Автор: Chikae Matsui, Hidehiro Sonoda, Noboru Kunimatsu
Принадлежит: Japan Display Inc, Panasonic Liquid Crystal Display Co Ltd

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first alignment film is a photo alignment film, and a thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy formula (2), d2<d1  (2).

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Номер записи: 142
27-05-2021 дата публикации

VARNISH FOR PHOTO ALIGNMENT FILM AND LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20210155755A1
Автор: Hirota Takenori, KUNIMATSU Noboru, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит: Japan Display Inc.

According to one embodiment, a varnish for a photo alignment film includes an imidization promotor and a first polyamic acid-based compound in an organic solvent. The first polyamic acid-based compound is a polyamic acid or a polyamic acid ester. The imidization promotor has skeleton containing no primary amino group and no secondary amino group. The first polyamic acid-based compound has terminal skeletons containing no primary amino group. 1: A method of manufacturing a lateral electric field type liquid crystal display comprising:a step of forming a pixel electrode and a counter electrode over a substrate; anda step of forming a photo alignment film by imidizing a varnish formed over the pixel electrode and the counter electrode, and by radiating with UV lightwherein the varnish comprises an organic solvent, a first polyamic acid-based compound, and an imidization promotor for promoting dehydration and cyclization reaction to the first polyamic acid-based compound, the first polyamic acid-based compound being a polyamic acid or a polyamic acid ester,whereinthe imidization promotor has skeleton containing neither a primary amino group nor a secondary amino group,the imidization promotor is a pyridine-based compound, a quinoline-based compound, an isoquinoline-based compound, an imidazole-based compound, a benzimidazole-based compound or a tertiary amine, andthe first polyamic acid-based compound has terminal skeletons containing no primary amino group.2: The method according to claim 1 , wherein the imidization promotor comprises an amine-reactive skeleton.3: The method according to claim 2 , wherein the amine-reactive skeleton comprises a halogen group claim 2 , a diazo group claim 2 , a carboxyl group claim 2 , a hydroxyl group claim 2 , an isocyanate group or an acid anhydride skeleton.4: The method according to claim 1 , wherein the imidization promotor has a molecular weight of 130 or more.7: The method according to claim 1 , wherein the terminal skeletons ...

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Номер записи: 143
16-04-2020 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20200117058A1
Автор: KANEKO Toshiki, KUNIMATSU Noboru, Matsumori Masaki, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film. 1. A liquid crystal display device comprising:a TFT substrate,a pixel electrode and a thin film transistor formed on the TFT substrate,a counter substrate opposed to the TFT substrate,a spacer formed on the counter substrate to determine a distance between the TFT substrate and the counter substrate, anda liquid crystal layer between the TFT substrate and the counter substrate,whereina plinth is formed on the TFT substrate and opposed to the spacer,a top of the plinth is closer to the counter substrate than a top of the pixel electrode,an alignment film on the pixel electrode includes a first material and a second material,an alignment film on the plinth includes either one of the first material and the second material, anda thickness of the alignment film on the plinth is less than a thickness of the alignment film on the pixel electrode.2. The liquid crystal display device according to claim 1 , further comprising a signal line electrically connected to the pixel electrode through the thin film transistor claim 1 ,wherein the plinth overlaps the signal line in a plan view.3. The liquid crystal display device according to claim 2 , whereinthe plinth is a stacked structure and includes at least one of a same material as the pixel ...

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Номер записи: 144
12-05-2016 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20160131928A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, Matsumoto Yuko, SONODA Hidehiro
Принадлежит:

A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film. 1. A liquid crystal display device comprising ,a first substrate having a first alignment film.a second substrate having a second alignment film,a liquid crystal layer disposed between the first alignment film and the second alignment film,a first electrode and a second electrode disposed between the first substrate and the first alignment film, andan insulation layer disposed between the first electrode and the second electrode, wherein the liquid crystal layer is configured to be controlled by an electric field which is generated between the first electrode and the second electrode,wherein the first electrode and the second electrode are transparent,wherein the first alignment film is a photo alignment film, andwherein a thickness of the second alignment film is less than a thickness of the first alignment film measured at a light transmitting area of the liquid crystal display device.2. The liquid crystal display device according to claim 1 ,wherein the second electrode is a planar shape.3. The liquid crystal display device according to claim 1 ,wherein the thickness of the second alignment film is greater than or equal to 10 nm and no ...

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Номер записи: 145
21-05-2015 дата публикации

Liquid crystal display device

Номер: US20150138476A1
Автор: Hidehiro Sonoda, Noboru Kunimatsu, Takenori HIROTA, Yasuo Imanishi, Yasushi Tomioka, Yosuke Hyodo
Принадлежит: Japan Display Inc

To take measures against the phenomenon of difficulty for the orientation film material to flow into the through-hole when the diameter of through-holes which connects the pixel electrode and the source electrode becomes small. An interlayer insulating film 109 made of SiN is formed on a counter electrode, and a pixel electrode 110 having a slit 1101 is formed on the interlayer insulating film 109. A through-hole 111 which connects the pixel electrode 110 and the source electrode of a TFT has a large opening on the upper side, a small opening on the lower side, and an inner wall extending between the large opening and the small opening. The pixel electrode 110 covers the through-hole 111 on an inner side of the pixel of the through-hole 111 but does not cover a periphery of the large opening of the through-hole on an outer side of the through-hole 111. Consequently, an orientation film material can easily flow from a starting point given by an end portion of the pixel electrode into the inside of the through-hole.

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Номер записи: 146
21-05-2015 дата публикации

Liquid Crystal Display Device

Номер: US20150140709A1
Автор: Chikae Matsui, Hidehiro Sonoda, Masaki Matsumori, Noboru KUMIMATSU, Shoichi Uchino, Yasushi Tomioka, Yuko Matsumoto
Принадлежит: Japan Display Inc, Panasonic Liquid Crystal Display Co Ltd

A method for fabricating a liquid crystal display device including a TFT substrate having an alignment film formed thereon, an opposing substrate, and a liquid crystal layer sandwiched therebetween. The alignment film on the TFT substrate includes a photolytic polymer made from a first precursor including cyclobutane, and a non-photolytic polymer made from a second precursor. The method includes the steps of depositing a mixture material including the first precursor and the second precursor in which the second precursor settles more on an upper surface of the TFT substrate than the first precursor, imidizing the mixture material, and irradiating the mixture material with ultraviolet light for photo-alignment, and after irradiating, heating the mixture material to form the alignment film.

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Номер записи: 147
07-08-2014 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20140220848A1
Автор: KANEKO Toshiki, KUNIMATSU Noboru, MATSUI Chikae, Matsumoto Yuko, SONODA Hidehiro, TANAKA Jun, Uchino Shoichi, Yaguchi Tomio
Принадлежит:

Disclosed is a manufacturing method of a liquid crystal display device which is a manufacturing method of a liquid crystal display device including a liquid crystal alignment film to which an alignment regulating force is imparted by a photo-alignment treatment, including: a film forming step of forming a film containing a polymer whose main chain is cleaved by irradiation with light; a photo-alignment step of imparting an alignment regulating force to the film formed in the film forming step by irradiation of the film with light in an atmosphere of a temperature lower than 100° C.; and a removing step of removing a low-molecular weight component generated by cleaving the main chain of the polymer through the light irradiation after the light irradiation. Also disclosed is a liquid crystal display device manufactured by the manufacturing method. 2. The manufacturing method of a liquid crystal display device according to claim 1 , wherein the water-soluble organic solvent includes an alcohol compound having a boiling point of 110° C. or lower.3. The manufacturing method of a liquid crystal display device according to claim 1 , wherein the water-soluble organic solvent includes a low-boiling ketone compound.4. The manufacturing method of a liquid crystal display device according to claim 1 , wherein the removing step further comprises a washing with pure water.5. The manufacturing method of a liquid crystal display device according to claim 4 , wherein the water-soluble organic solvent includes an alcohol compound having a boiling point of 110° C. or lower.6. The manufacturing method of a liquid crystal display device according to claim 4 , wherein the water-soluble organic solvent includes a low-boiling ketone compound.7. The manufacturing method of a liquid crystal display device according to claim 1 , wherein the photo-alignment step of imparting the alignment regulating force to the film formed in the film forming step by irradiation of the film with light in an ...

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Номер записи: 148
18-05-2017 дата публикации

VARNISH FOR PHOTO ALIGNMENT FILM AND LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20170137667A1
Автор: Hirota Takenori, KUNIMATSU Noboru, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит: Japan Display Inc.

According to one embodiment, a varnish for a photo alignment film includes a first polyamic acid-based compound, which is a polyamic acid or a polyamic acid ester, in an organic solvent. The first polyamic acid-based compound has terminal skeletons containing no primary amino group. 1. A varnish for a photo alignment film comprising a first polyamic acid-based compound , which is a polyamic acid or a polyamic acid ester , in an organic solvent , wherein the first polyamic acid-based compound has terminal skeletons containing no primary amino group.2. The varnish according to claim 1 , wherein the terminal skeleton comprises an imide skeleton claim 1 , an amide skeleton claim 1 , a urea skeleton claim 1 , a tertiary amino skeleton claim 1 , an azo bond or carboxyl group.4. The varnish according to claim 3 , wherein the terminal skeleton comprises an amic acid skeleton or an amic acid ester skeleton.6. The varnish according to claim 3 , wherein X is an alicyclic group.7. The varnish according to claim 4 , wherein X is an alicyclic group.8. The varnish according to claim 5 , wherein X is an alicyclic group.12. The varnish according to claim 9 , wherein Z is constituted by oxygen claim 9 , nitrogen claim 9 , sulfur claim 9 , carbon claim 9 , hydrogen claim 9 , or a combination of two or more of them claim 9 , and Z has no hydroxyl group claim 9 , no thiol group and no amino group claim 9 , —NH or >NH claim 9 , other than a tertiary amino group.13. The varnish according to claim 10 , wherein Z is constituted by oxygen claim 10 , nitrogen claim 10 , sulfur claim 10 , carbon claim 10 , hydrogen claim 10 , or a combination of two or more of them claim 10 , and Z does no hydroxyl group claim 10 , no thiol group and no amino group claim 10 , —NH or >NH claim 10 , other than a tertiary amino group.14. The varnish according to claim 11 , wherein Z is constituted by oxygen claim 11 , nitrogen claim 11 , sulfur claim 11 , carbon claim 11 , hydrogen claim 11 , or a combination of ...

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Номер записи: 149
25-05-2017 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20170146872A1
Автор: HYODO Yosuke, KUNIMATSU Noboru, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

In a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment film material can easily flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole. 1. A display device comprising:a first substrate including a first electrode, an organic film formed on the first electrode, and a second electrode electrically connected to the first electrode through a through hole that is formed in the organic film,wherein the through hole has a first portion and a second portion, the second portion is closer to the first substrate than the first portion is, the second portion is arranged between the first substrate and the first portion,wherein the second portion is steeper than the first portion, andwherein the second electrode has a slit which overlaps the first portion.2. The display device according to claim 1 ,wherein a taper angle of the second portion is greater than a taper angle of the first portion.3. The display device according to claim 1 ,wherein the slit does not overlap with the first electrode, in a plan view.4. The display device according to claim 1 ,wherein the slit is outside of an end of the first electrode.5. The display device according to claim 1 , further comprising a third electrode formed on the organic film claim 1 , an inorganic film ...

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Номер записи: 150
11-06-2015 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20150160521A1
Автор: ISHIGAKI Toshimasa, SONODA Hidehiro, TOMIOKA Yasushi, UETA Sumito
Принадлежит:

To prevent a phenomenon that an alignment film material is difficult to flow into the through-hole where a diameter of a through-hole for connecting between a pixel electrode and a source electrode is reduced. 1. A liquid crystal display device comprising: a common electrode formed on an organic passivation film,', 'an interlayer insulating film formed so as to cover the common electrode,', 'a pixel electrode formed on the interlayer insulating film, the pixel electrode having a slit,', 'a through-hole formed in the organic passivation film and the interlayer insulating film, and', 'a source electrode electrically conducted to the pixel electrode via the through-hole;, 'a TFT substrate having pixels each including'}a counter substrate having a black matrix formed thereon; andliquid crystal sandwiched between the TFT substrate and the counter substrate, 'a taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees, and', 'wherein, where the through-hole formed in the organic passivation film assumes a cross-section in which a top face is defined on the side of the counter substrate and a bottom face is defined on the side of the source electrode, the top face having a diameter larger than that of the bottom face, the through-hole having a depth of D,'}wherein the pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole.2. A liquid crystal display device comprising: a pixel electrode formed on an organic passivation film,', 'a through-hole formed in the organic passivation film,', 'a source electrode electrically conducted to the pixel electrode via the through-hole,', 'an interlayer insulating film formed so as to cover the pixel electrode, and', 'a common electrode formed on the interlayer insulating film, the common electrode having a slit;, 'a TFT substrate having pixels each including'}a counter substrate having a black matrix formed thereon; andliquid ...

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Номер записи: 151
18-06-2015 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20150168755A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

In a liquid crystal display device, a light shielding film, a color filter, an overcoat film, and an alignment film are formed in this order on a counter substrate. However, the alignment film is not formed in a seal portion. When the alignment film is subjected to photo-alignment with ultraviolet radiation, a portion of the overcoat film not covered with the alignment film is degraded by ultraviolet radiation. In order to prevent moisture penetrating from the degraded overcoat film from reaching the light shielding film to thereby alter the light shielding film and from causing the peeling of the light shielding film, the color filter is disposed below the overcoat film to block the moisture. 1. A liquid crystal display device comprising:a first substrate;a second substrate;a sealing material fixing the first substrate and the second substrate;a liquid crystal layer sealed between the first substrate and the second substrate;a plurality of TFTs, a plurality of pixel electrodes, and a first alignment film which are formed on the first substrate; anda light shielding film, a first color filter, an overcoat film covering the first color filter, and a second alignment film disposed between the overcoat film and the liquid crystal layer,wherein the second alignment film is a photo alignment film,wherein the overcoat film has a first region covered by the second alignment film,and a second region not covered by the second alignment film, andwherein the light shielding film, the first color filter, and the overcoat film are stacked between the sealing material and the second substrate in the second region.2. The liquid crystal display device according to claim 1 , further comprising a counter electrode formed on the first substrate claim 1 , and wherein the liquid crystal layer is controlled by an electric field generated between the plurality of pixel electrodes and the counter electrode.3. The liquid crystal display device according to claim 2 , wherein the first ...

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Номер записи: 152
04-09-2014 дата публикации

DISPLAY DEVICE COMPRISING A RECESSED PORTION THAT IS FORMED WITH AT LEAST ONE CONVEX PORTION AT A BOTTOM OF THE RECESSED PORTION AND WHEREIN THE RECESSED PORTION FACES A COLUMNAR SPACER

Номер: US20140247416A1
Автор: HYODO Yosuke, Igeta Koichi, KANEKO Toshiki, KUNIMATSU Noboru, SONODA Hidehiro
Принадлежит: Japan Display Inc.

A display device includes a first substrate having organic and alignment films, a second substrate adhered to the first substrate by a sealant which surrounds a pixel region, a columnar spacer formed on the second substrate defining a distance between the first substrate and the second substrate, and a recessed portion formed in the organic film of the pixel region, the recessed portion facing to the columnar spacer. The recessed portion has a convex portion at a bottom of the recessed portion, and a height of a top of the convex portion from the first substrate is lower than a height of an upper surface of the organic film from the first substrate. A thickness of an alignment film on the convex portion is smaller than a thickness of the bottom of the recessed portion, and a top of the columnar spacer is in contact with the convex portion. 1. A display device comprising:a first substrate having an organic film and an alignment film;a second substrate adhered to the first substrate by a sealant which surrounds a pixel region;a columnar spacer formed on the second substrate defining a distance between the first substrate and the second substrate; anda recessed portion formed in the organic film of the pixel region, the recessed portion facing to the columnar spacer;wherein the recessed portion is formed with at least one convex portion at a bottom of the recessed portion, and a height of a top of the at least one convex portion from the first substrate is lower than a height of an upper surface of the organic film from the first substrate;wherein a thickness of an alignment film on the at least one convex portion is smaller than a thickness of the bottom of the recessed portion;wherein a top of the columnar spacer is in contact with the at least one convex portion formed on the recessed portion; andwherein an area at the bottom of the recessed portion is larger than an area at the top of the columnar spacer.2. A display device according to claim 1 , wherein at least ...

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Номер записи: 153
14-06-2018 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20180164648A1
Автор: HYODO Yosuke, KUNIMATSU Noboru, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

In a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment material can flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole. 1. A display device comprising:a first substrate including a source electrode of a switching element, an organic film formed on the source electrode, and a first electrode formed on the organic film,wherein the organic film has a hole which exposes the source electrode,the source electrode is connected to the first electrode through the hole, andthe first electrode has a slit which extends toward the hole.2. The display device according to claim 1 ,wherein a video signal is supplied to the first electrode through the source electrode.3. The display device according to claim 1 ,wherein the organic film has a main surface which substantially parallel to the first substrate, a hole which expose the source electrode, and a side surface which extends, tapering to the first substrate, from the main surface to the hole,wherein the slit is formed on the main surface of the organic film and the side surface of the organic film.4. The display device according to claim 3 , further comprising a second electrode formed between the organic film and the first electrode claim 3 ,wherein the second electrode is not connected to the ...

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Номер записи: 154
06-06-2019 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20190171073A1
Автор: HYODO Yosuke, KUNIMATSU Noboru, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

In a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment film material can easily flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole. 1. A display device comprising:a first substrate,a source electrode of a thin film transistor provided on the first substrate,an organic insulating film covering the source electrode,a common electrode provided on the organic insulating film,an inorganic insulating film provided on the common electrode, anda pixel electrode provided on the inorganic insulating film and connected to the source electrode,wherein the organic insulating film has a sidewall surrounding a contact portion where the source electrode and the pixel electrode are connected,the pixel electrode has a slit, anda part of the slit is provided on the sidewall.2. The display device according to claim 1 ,wherein the sidewall is not parallel to a surface of the first substrate in a cross-sectional view.3. The display device according to claim 1 ,wherein the common electrode has an aperture corresponding to the contact portion, andan end of the aperture is provided on the sidewall.4. The display device according to claim 1 , further comprising an alignment film provided on the pixel electrode claim 1 ,wherein the alignment film covers the ...

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Номер записи: 155
06-06-2019 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20190171074A1
Автор: ISHIGAKI Toshimasa, SONODA Hidehiro, TOMIOKA Yasushi, UETA Sumito
Принадлежит:

A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole. 1. A liquid crystal display device comprising:a transistor substrate including;a thin film transistor having a source electrode,a gate signal line driving the thin film transistor,an organic insulating film formed on the thin film transistor and having a through hole,a common electrode formed on the organic insulating film,an interlayer insulating film formed on the common electrode,a pixel electrode formed on the interlayer insulating film and electrically connected to the source electrode via the through hole,a counter substrate; anda liquid crystal layer sandwiched between the transistor substrate and the counter substrate,wherein the common electrode has a hole corresponding to the through hole,the pixel electrode has a non-formation part, anda part of the non-formation part overlaps with the hole in a plan view.2. The liquid crystal display device according to claim 1 ,wherein the non-formation part is a slit.3. The liquid crystal display device according to claim 2 ,wherein the through hole has a side wall, andthe through hole overlaps with the part of the non-formation part.4. The ...

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Номер записи: 156
18-09-2014 дата публикации

Liquid Crystal Display Device and Method of Manufacturing That

Номер: US20140267992A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first alignment film is a photo alignment film, and a thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy formula (1) and (2): 1. A liquid crystal display device comprising:a first substrate;a first alignment film formed over the first substrate;a second substrate;a second alignment film formed over the second substrate;a liquid crystal layer sandwiched between the first alignment film and the second alignment film; anda projecting portion formed over the second substrate;wherein the first alignment film is a photo alignment film; and [{'br': None, '0 nm Подробнее

Номер записи: 157
28-06-2018 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20180180957A1
Автор: ISHIGAKI Toshimasa, SONODA Hidehiro, TOMIOKA Yasushi, UETA Sumito
Принадлежит:

A liquid crystal display device comprising a TFT substrate having pixels each including a common electrode formed on an organic passivation film, an interlayer insulating film formed so as to cover the common electrode, a pixel electrode having a slit and formed on the interlayer insulating film, a through-hole formed in the organic passivation film and the interlayer insulating film, and a source electrode electrically conducted to the pixel electrode via the through-hole. A taper angle at a depth of D/2 of the through-hole is equal to or more than 50 degrees. The pixel electrode covers part of a side wall of the through-hole but does not cover the remaining part of the side wall of the through-hole. This configuration facilitates the alignment film material to flow into the through-hole, thereby solving a thickness unevenness of the alignment film in vicinity of the through-hole. 1. A liquid crystal display device comprising:a transistor substrate including;a thin film transistor having a source electrode,a gate signal line driving the thin film transistor,an organic insulating film formed on the thin film transistor and having a through hole which has a side wall,a common electrode formed on the organic insulating film,an interlayer insulating film formed on the common electrode,a pixel electrode formed on the interlayer insulating film and electrically connected to the source electrode via the through-hole,a counter substrate having a light shielding film, anda liquid crystal layer sandwiched between the transistor substrate and the counter substrate,wherein the pixel electrode covers the side wail of the through-hole, andwherein the pixel electrode has a first edge and a second edge in a first direction in which the pixel electrode extends,wherein the first edge is located closer to the gate signal line than the second edge is, andwherein the first edge is overlapped with the side wall.2. The liquid crystal display device according to claim 1 , wherein the ...

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Номер записи: 158
13-06-2019 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20190179201A1
Автор: KANEKO Toshiki, KUNIMATSU Noboru, Matsumori Masaki, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film. 1. A liquid crystal display device comprising:a TFT substrate, a counter substrate, a liquid crystal layer between the TFT substrate and the counter substrate,wherein a spacer is formed on the counter substrate to determine a distance between the TFT substrate and the counter substrate,a pixel electrode, a TFT (thin film transistor), and a plinth, which opposes to the spacer, are formed on the TFT substrate,a distance between the TFT substrate and a top of plinth is bigger than a distance between the TFT substrate and a top of the pixel electrode,wherein an alignment film is formed on the plinth and the pixel electrode,a first material and a second material are included in the alignment film,the first material exhibits photo-alignment effect,the alignment film is constituted by an upper layer and a lower layer, the upper layer is adjacent to the liquid crystal layer,a ratio of the first material to the second material is bigger in the upper layer than in the second layer,when the thickness of the lower alignment film is defined as p1 and the thickness of the upper alignment film is defined as p2, p2/p1 over the plinth is smaller than p2/p1 over the pixel electrode.2. The liquid crystal display device according to claim 1 , wherein ...

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Номер записи: 159
13-06-2019 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20190179203A1
Автор: KANEKO Toshiki, KUNIMATSU Noboru, MATSUI Chikae, Matsumoto Yuko, SONODA Hidehiro, TANAKA Jun, Uchino Shoichi, Yaguchi Tomio
Принадлежит:

Disclosed is a manufacturing method of a liquid crystal display device which is a manufacturing method of a liquid crystal display device including a liquid crystal alignment film to which an alignment regulating force is imparted by a photo-alignment treatment, including: a film forming step of forming a film containing a polymer whose main chain is cleaved by irradiation with light; a photo-alignment step of imparting an alignment regulating force to the film formed in the film forming step by irradiation of the film with light in an atmosphere of a temperature lower than 100° C.; and a removing step of removing a low-molecular weight component generated by cleaving the main chain of the polymer through the light irradiation after the light irradiation. Also disclosed is a liquid crystal display device manufactured by the manufacturing method. 1. A manufacturing method of a liquid crystal display device comprising:a photo alignment film forming step comprising:forming a film formed of polyimide having a cyclobutane structure from one of a polyamic acid and a polyamic acid ester;cleaving the cyclobutane structure of the film by irradiation with light in an atmosphere having a temperature lower than 100° C.; andremoving a low-molecular weight component having a maleimide end which is cleaved from the cyclobutane structure of the film by the light irradiation,wherein the photo alignment film aligns liquid crystal molecules substantially in parallel with a surface of a substrate, andwherein the removing step comprises the low-molecular weight component is removed by heating the film under a reduced pressure atmosphere after the light irradiation.2. The manufacturing method of a liquid crystal display device according to claim 1 ,wherein the heating in the removing step is performed at 150° C. or higher.3. The manufacturing method of a liquid crystal display device according to claim 1 ,wherein the heating in the removing step is performed at 300° C. or less.4. The ...

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Номер записи: 160
29-06-2017 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20170184929A1
Автор: KOSUGE Masahiro, KUNIMATSU Noboru, SAEKI Yoshifumi, SONODA Hidehiro, Suzuki Daiichi, Tanaka Yukio
Принадлежит: Japan Display Inc.

According to one embodiment, a liquid crystal display device includes a liquid crystal display panel which includes a pixel electrode, a liquid crystal layer and an alignment film, and a driver. The driver drives the pixel electrode at a drive frequency of 1 to 20 Hz. The alignment film has a resistivity of 5×10Ω·cm or more. 1. A liquid crystal display device comprising:a liquid crystal display panel which includes a pixel electrode, a liquid crystal layer and an alignment film which is located between the pixel electrode and the liquid crystal layer, and which is in contact with the liquid crystal layer; anda driver which drives the pixel electrode at a drive frequency of 1 to 20 Hz,{'sup': '14', 'wherein the alignment film has a resistivity of 5×10Ω·cm or more.'}2. The liquid crystal display device of claim 1 ,wherein the liquid crystal layer is formed of a negative liquid crystal material.3. The liquid crystal display device of claim 2 ,{'sup': '13', 'wherein the liquid crystal layer has a resistivity of 1.33 10Ω·cm or more'}4. The liquid crystal display device of claim 3 , wherein the resistivity of the liquid crystal layer is 1.33 10Ω·cm or more.5. The liquid crystal display device of claim 1 , wherein the liquid crystal layer has a resistivity of 1×10Ω·cm or more.6. The liquid crystal display device of claim 5 , wherein the resistivity of the liquid crystal layer is 1.33 10Ω·cm or more.7. The liquid crystal display device of claim 1 , further comprising a common electrode claim 1 ,wherein the pixel electrode is located between the common electrode and the alignment film, andthe alignment film is in contact with the pixel electrodes.8. The liquid crystal display device of claim 1 , further comprising a backlight unit which illuminates the liquid crystal display panel.9. The liquid crystal display device of claim 8 , wherein the alignment film is formed of material which does not cause a conductive carrier to be generated by light. This application is based upon ...

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Номер записи: 161
06-08-2015 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20150219969A1
Автор: KUNIMATSU Noboru, Matsui Chickae, Matsumoto Yuko, SONODA Hidehiro
Принадлежит:

A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film. 1. A liquid crystal display device comprising ,a first substrate having a first alignment film,a second substrate having a second alignment film,a liquid crystal layer disposed between the first alignment film and the second alignment film,a first electrode and a second electrode disposed between the first substrate and the first alignment film, andan insulation layer disposed between the first electrode and the second electrode, and a first alignment film disposed on the second electrode,wherein the liquid crystal layer is configured to be controlled by an electric field which is generated between the first electrode and the second electrode,wherein the first electrode and the second electrode are transparent, and the first electrode includes at least one linear electrode part,wherein the first alignment film is a photo alignment film formed by irradiating an insulating film with linear polarized light, andwherein a thickness of the second alignment film is less than a thickness of the first alignment film measured at a light transmitting area of the first alignment film.2. A liquid crystal display device according to claim 1 , wherein the ...

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Номер записи: 162
16-10-2014 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20140307209A1
Автор: HYODO Yosuke, ISHIGAKI Toshimasa, ITOU Osamu, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит: Japan Display Inc.

A high-definition and high-contrast liquid crystal display device having a high aperture ratio without light leakage around a columnar spacer is provided. The liquid crystal display device of a horizontal electric field type includes a TFT substrate with a pixel electrode and a common electrode, a color filter substrate with a color filter, a columnar spacer interposed between the substrates, and a liquid crystal layer arranged between the substrates. A liquid crystal alignment film formed between the substrates is a photo-alignment film. The columnar spacer, formed on the color filter substrate or the TFT substrate, has a wall-like shape and an inclined surface extending in a direction parallel to or perpendicular to a direction in which the liquid crystal is initially aligned. 1. A liquid crystal display device of a horizontal electric field type , comprising:a TFT substrate provided with a pixel electrode and a common electrode;an opposing substrate facing the TFT substrate;a columnar spacer interposed between the TFT substrate and the opposing substrate; anda liquid crystal layer arranged between the substrates, whereina liquid crystal alignment film formed between the TFT substrate and the opposing substrate is a photo-alignment film, andthe columnar spacer is formed on one of the opposing substrate and the TFT substrate, the columnar spacer having a wall-like shape and an inclined surface extending in a direction parallel to or perpendicular to a direction in which the liquid crystal is initially aligned.2. The liquid crystal display device according to claim 1 , whereinthe columnar spacer has a quadrangular-column shape with a substantially quadrilateral top portion, andfour end sides of the columnar spacer extend in a direction nearly parallel to or nearly perpendicular to the direction in which the liquid crystal is initially aligned.3. The liquid crystal display device according to claim 1 , whereinthe liquid crystal is initially aligned at a predetermined ...

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Номер записи: 163
25-07-2019 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20190227359A1
Автор: Hirota Takenori, KANAYA Yasuhiro, KANEKO Toshiki, SONODA Hidehiro
Принадлежит:

A reliability of seal portion of a liquid crystal display device can be improved by the following structure. A liquid crystal display device includes: a TFT substrate which includes a display region and a terminal part, and has an inorganic insulating film formed on an organic passivation film and an alignment film formed over the inorganic insulating film; a counter substrate, the TFT substrate and the counter substrate bonded together by a sealing material formed at a seal part surrounding the display region; and a liquid crystal sealed inside. At the seal part, a transparent conductive oxide film is formed between the inorganic insulating film and the alignment film. The transparent conductive oxide film exists inside an edge of the TFT substrate and hence, the edge of the TFT substrate is free of the transparent conductive oxide film. 1. A display device comprising:a first substrate having a first inorganic film, an organic film provided on the first inorganic film, a second inorganic film provided on the organic film, and a transparent conductive film provided on the second inorganic film;a second substrate opposed to the first substrate; anda sealing material bonded to the first substrate and the second substrate,whereinthe sealing material is located in a peripheral area which surrounds a display area,the organic film has a hole in the peripheral area,the transparent conductive film is located between the hole and the display area, and overlapped with the sealing material in a sectional view,the first inorganic film and the second inorganic film directly contact in the hole, andthe second inorganic film is located on the organic film which is closer to an end of the first substrate than the hole.2. The display device according to claim 1 , further comprising a plurality of lines provided between the first inorganic film and the organic film claim 1 ,wherein the transparent conductive film overlaps with the plurality of lines in a sectional view.3. The display ...

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Номер записи: 164
16-07-2020 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20200225543A1
Автор: KANEKO Toshiki, KUNIMATSU Noboru, MATSUI Chikae, Matsumoto Yuko, SONODA Hidehiro, TANAKA Jun, Uchino Shoichi, Yaguchi Tomio
Принадлежит:

Disclosed is a manufacturing method of a liquid crystal display device which is a manufacturing method of a liquid crystal display device including a liquid crystal alignment film to which an alignment regulating force is imparted by a photo-alignment treatment, including: a film forming step of forming a film containing a polymer whose main chain is cleaved by irradiation with light; a photo-alignment step of imparting an alignment regulating force to the film formed in the film forming step by irradiation of the film with light in an atmosphere of a temperature lower than 100° C.; and a removing step of removing a low-molecular weight component generated by cleaving the main chain of the polymer through the light irradiation after the light irradiation. Also disclosed is a liquid crystal display device manufactured by the manufacturing method. 2. The manufacturing method of a liquid crystal display device according to claim 1 ,wherein the removing step comprises the low-molecular weight component is removed by heating the film under a reduced pressure atmosphere after the light irradiation.3. The manufacturing method of a liquid crystal display device according to claim 1 ,the removing step comprises washing the film using a solution containing a water and a solvent.4. The manufacturing method of a liquid crystal display device according to claim 2 ,wherein the heating in the removing step is performed at 150° C. or higher.5. The manufacturing method of a liquid crystal display device according to claim 2 ,wherein the heating in the removing step is performed at 300° C. or less.6. The manufacturing method of a liquid crystal display device according to claim 2 ,wherein the heating in the removing step is performed in within a range from 200° C. to 290° C.7. The manufacturing method of a liquid crystal display device according to claim 2 ,wherein the heating in the removing step is performed for 5 minutes or more.8. The manufacturing method of a liquid crystal ...

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Номер записи: 165
27-11-2014 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20140347585A1
Автор: HYODO Yosuke, Imanishi Yasuo, KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит: Japan Display Inc.

The present invention provides a liquid crystal display device in which even in the case of using a photo-alignment technique, excellent afterimage characteristics can be stably obtained. 1. A liquid crystal display device comprising:a TFT substrate which includes pixel electrodes and TFTs and on which an alignment film is formed on a pixel; andan opposed substrate which is arranged to face the TFT substrate and on which an alignment film is formed on the uppermost surface on the side of the TFT substrate,wherein liquid crystal is sandwiched between the alignment film of the TFT substrate and that of the opposed substrate, the alignment film is a hydrophobic material that can provide a liquid crystal alignment restraining force by irradiating polarized light, a layer in which the ratio of elements configuring the alignment film is changed towards the film thickness direction is provided on the surface of the alignment film, and the ratio of oxygen atoms on the surface of the alignment film is higher than that inside the alignment film.2. The liquid crystal display device according to claim 1 ,wherein the ratio of oxygen configuring the alignment film of the layer in which the ratio of elements configuring the alignment film is changed towards the film thickness direction is gradually decreased from the surface of the alignment film towards the inside of the alignment film.3. The liquid crystal display device according to claim 1 ,wherein the ratio of oxygen at a position with the highest oxygen concentration in the layer in which the ratio of elements is changed towards the film thickness direction is higher than that at a position with the lowest oxygen concentration by 25% or higher.4. The liquid crystal display device according to claim 1 ,wherein the thickness of the layer in which the ratio of elements is changed towards the film thickness direction is smaller than the entire thickness of the alignment film by 50% or smaller.5. The liquid crystal display device ...

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Номер записи: 166
06-08-2020 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF MANUFACTURING THAT

Номер: US20200249533A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first film is a photo alignment film, and a thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy formula (2), 1. A liquid crystal display device comprising:a first substrate;a thin film transistor including a gate electrode provided on the first substrate;a first insulation film provided on the thin film transistor;a first electrode provided on the first insulation film;a second insulation film provided on the first electrode and the first insulation film;a second electrode provided on the second insulation film;a first alignment film provided on the second insulation film and the second electrode;a second substrate;a black matrix provided on the second substrate;a projection provided on the black matrix;a second alignment film provided on the black matrix and the projection; anda liquid crystal layer provided between the first substrate and the second substrate,wherein one of the first electrode and the second electrode is connected to the thin film transistor,wherein one of a color filter and an overcoat is between the black matrix and the projection, {'br': None, '0 nm Подробнее

Номер записи: 167
21-09-2017 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20170269405A1
Автор: Hirota Takenori, KANAYA Yasuhiro, KANEKO Toshiki, SONODA Hidehiro
Принадлежит:

a reliability of seal portion of a liquid crystal display device can be improved by the following structure. A liquid crystal display device includes: a TFT substrate which includes a display region and a terminal part, and has an inorganic insulating film formed on an organic passivation film and an alignment film formed over the inorganic insulating film; a counter substrate, the TFT substrate and the counter substrate bonded together by a sealing material formed at a seal part surrounding the display region; and a liquid crystal sealed inside. At the seal part, a transparent conductive oxide film is formed between the inorganic insulating film and the alignment film. The transparent conductive oxide film exists inside an edge of the TFT substrate and hence, the edge of the TFT substrate is free of the transparent conductive oxide film.

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Номер записи: 168
06-10-2016 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20160291416A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first alignment film is a photo alignment film, and a thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy formula (1) and (2): 1. A liquid crystal display device comprising:a first substrate;a first alignment film formed over the first substrate;a second substrate;a second alignment film formed over the second substrate;a liquid crystal layer sandwiched between the first alignment film and the second alignment film;a projecting portion formed over the second substrate;a facing portion formed over the first substrate;a first electrode formed between the first alignment film and the first substrate;andan insulation film formed on the liquid crystal layer;wherein the first electrode is covered by the first alignment film,wherein the insulation film is covered by the first alignment film,wherein the facing portion faces the projecting portion,wherein the first alignment film or the second alignment film is a photo alignment film, and [{'br': None, 'i': 'd', '0 nm<2<30 nm\u2003\u2003(1),'}, {'br': None, 'i': d', 'd, '2<1\u2003\u2003(2).'}], 'wherein a thickness “d2” of the second alignment film over the projecting portion and a thickness “d1” of the first alignment film on the facing portion satisfy formula (1) and (2),'}2. The liquid crystal display device according to further comprising:a second electrode formed between the first alignment film and the first substrate;wherein the liquid crystal layer is controlled by an electric field generated between the first electrode and the second electrode.3 ...

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Номер записи: 169
05-10-2017 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20170285388A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

A liquid crystal display device includes a TFT substrate and a counter substrate and a liquid crystal layer sandwiched therebetween. A scanning line, a video signal line, a thin film transistor connected to the scanning line and the video signal line, a pixel electrode connected to the thin film transistor, and a counter electrode are formed on the TFT substrate, and a columnar spacer formed on the counter substrate. The pixel and counter electrodes are transparent, and the liquid crystal layer is controlled by an electric field generated between the pixel and counter electrodes. The counter electrode contacts with a metal line having a first part which is extended in parallel with the scanning line and a second part which is extended in parallel with the video signal line, a width of the first part of the metal line being narrower than a width of the scanning line. 1. A liquid crystal display device comprising:a TFT substrate and a counter substrate;a liquid crystal layer sandwiched between the TFT substrate and the counter substrate;a scanning line, a video signal line, a thin film transistor connected to the scanning line and the video signal line, a pixel electrode connected to the thin film transistor, and a counter electrode formed on the TFT substrate; anda columnar spacer formed on the counter substrate,wherein the pixel electrode and the counter electrode are transparent, and the liquid crystal layer is controlled by an electric field generated between the pixel electrode and the counter electrode,wherein the counter electrode contacts with a metal line, and the metal line includes a first part which is extended in parallel with the scanning line, a second part which is extended in parallel with the video signal line, and a third part which is arranged between the first part and the second part, and a width of the first part of the metal line is narrower than a width of the scanning line, andwherein the first part, the second part and the third part are ...

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Номер записи: 170
03-09-2020 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20200278573A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

A liquid crystal display device includes a TFT substrate and a counter substrate and a liquid crystal layer sandwiched therebetween. A scanning line, a video signal line, a thin film transistor connected to the scanning line and the video signal line, a pixel electrode connected to the thin film transistor, and a counter electrode are formed on the TFT substrate, and a columnar spacer formed on the counter substrate. The pixel and counter electrodes are transparent, and the liquid crystal layer is controlled by an electric field generated between the pixel and counter electrodes. The counter electrode contacts with a metal line having a first part which is extended in parallel with the scanning line and a second part which is extended in parallel with the video signal line, a width of the first part of the metal line being narrower than a width of the scanning line. 1. A liquid crystal display device comprising:a TFT substrate and a counter substrate;a liquid crystal layer sandwiched between the TFT substrate and the counter substrate;a first metal line on the TFT substrate;a second metal line intersecting with the first metal line;a thin film transistor connected to the first metal line and the second metal line;an organic passivation film formed over the first metal line, the second metal line and the thin film transistor;a pixel electrode connected to the thin film transistor on the organic passivation film;a counter electrode formed opposite to the pixel electrode with an interlayer insulation film;a third metal line formed on the counter electrode along the first metal line;a columnar spacer formed on the counter substrate;a first alignment film covering the third metal line on the TFT substrate; anda second alignment film covering the columnar spacer on the counter substrate,wherein the pixel electrode and the counter electrode are transparent,the counter electrode electrically connected to the third metal line,the first alignment film and the second alignment ...

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Номер записи: 171
29-10-2015 дата публикации

Liquid Crystal Display Device and Method of Manufacturing That

Номер: US20150309372A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first alignment film is a photo alignment film, and a thickness “d” of the second alignment film over the projecting portion and a film thickness “d” of a portion of the first alignment film facing the projecting portion satisfy formula (1) and (2): 1. A liquid crystal display device comprising:a first substrate;a first alignment film formed over the first substrate;a second substrate;a second alignment film formed over the second substrate;a liquid crystal layer sandwiched between the first alignment film and the second alignment film;a projecting portion formed over the second substrate;a facing portion formed over the first substrate;a first electrode and a second electrode formed between the first alignment film and the first substrate; andan insulation film disposed between the second electrode and the liquid crystal layer;wherein the first electrode is covered by the first alignment film,wherein the insulation film is covered by the first alignment film,wherein the facing portion faces the projecting portion,wherein the first alignment film or the second alignment film is a photo alignment film, and [{'br': None, '0 nm Подробнее

Номер записи: 172
18-10-2018 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20180299735A1
Автор: HYODO Yosuke, KUNIMATSU Noboru, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит:

In a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment film material can easily flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole. 1. A display device comprising:a first substrate;a source electrode of a switching element provided on the first substrate;an organic film provided on the source electrode;a first electrode provided on the organic film and connected with the source electrode; anda second substrate opposed to the first substrate,wherein the organic film has a hole that connects the source electrode and the first electrode,a diameter of the hole at a first position where the source electrode and the first electrode are connected is smaller than a diameter of the hole at a second position that is closer to the second substrate than the first position,in a cross-sectional view, a width of the source electrode is smaller than the diameter at the second position of the hole, andthe first electrode has an end portion that is located between the first position of the hole and the second position of the hole.2. The display device according to claim 1 , further comprising claim 1 ,an inorganic film provided between the first electrode and the organic film, anda second electrode provided between the inorganic film and the organic ...

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Номер записи: 173
03-12-2015 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20150346556A1
Автор: Hirota Takenori, KANAYA Yasuhiro, KANEKO Toshiki, SONODA Hidehiro
Принадлежит:

A reliability of seal portion of a liquid crystal display device can be improved by the following structure. A liquid crystal display device includes: a TFT substrate which includes a display region and a terminal part, and has an inorganic insulating film formed on an organic passivation film and an alignment film formed over the inorganic insulating film; a counter substrate, the TFT substrate and the counter substrate bonded together by a sealing material formed at a seal part surrounding the display region; and a liquid crystal sealed inside. At the seal part, a transparent conductive oxide film is formed between the inorganic insulating film and the alignment film. The transparent conductive oxide film exists inside an edge of the TFT substrate and hence, the edge of the TFT substrate is free of the transparent conductive oxide film. 1. A liquid crystal display device comprising:a TFT substrate which includes a display region and a terminal part, and has an inorganic insulating film formed on an organic passivation film and an alignment film formed over the inorganic insulating film;a counter substrate, the TFT substrate and the counter substrate bonded together by a sealing material formed at a seal part surrounding the display region; anda liquid crystal sealed inside,wherein at the seal part, a transparent conductive oxide film is formed between the inorganic insulating film and the alignment film, andan edge of the transparent conductive oxide film exists inside an edge of the TFT substrate.2. The liquid crystal display device according to claim 1 , wherein at the seal part claim 1 , the organic passivation film is formed with a groove-like through-hole surrounding the display region claim 1 , and the transparent conductive oxide film is formed inside than the groove-like through-hole.3. The liquid crystal display device according to claim 1 , wherein the transparent conductive oxide film is made of ITO.4. The liquid crystal display device according to ...

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Номер записи: 174
08-12-2016 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD OF THE SAME

Номер: US20160357040A1
Автор: Hirota Takenori, HYODO Yosuke, Imanishi Yasuo, KUNIMATSU Noboru, SONODA Hidehiro, TOMIOKA Yasushi
Принадлежит: Japan Display Inc.

In a liquid crystal display device having an alignment film subjected to an optical alignment process, the frame area can be reduced while maintaining the reliability of the sealing portion. To achieve this, in the display area, the alignment process is performed with UV light on the alignment film, to form an area in which the alignment film is not formed in the opposing first and second sides, and to form an area in which the amount of UV light irradiation on the alignment film is one fourth or less of the display area in the opposing third and fourth sides. In the first and second sides, the sealing material overlaps the area in which the alignment film is not formed. In the third and fourth sides, the sealing material overlaps the area in which the amount of UV light irradiation is one fourth or less of the display area. 1. A liquid crystal display device comprising:a first substrate having a first alignment film,a second substrate having a second alignment film,a sealing material and a liquid crystal interposed between the first substrate and the second substrate,wherein the first alignment film and the second alignment film are optical aliment films,wherein the first substrate has a first side, a second side opposite the first side, a third side, and a fourth side opposite the third side,wherein the first substrate comprises a first area having a first width parallel to the first side in which the first alignment is not formed, and a portion of the sealing material overlaps the first area,wherein the first substrate comprises a second area having a second width parallel to the second side in which the first alignment film is not formed, and a portion of the sealing material overlaps the second area,wherein the first substrate comprises a third area parallel to the third side in which the birefringence phase difference (retardation) of the first alignment film is one fourth or less of the birefringence phase difference (retardation) of the first alignment film ...

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Номер записи: 175
07-11-2019 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF MANUFACTURING THAT

Номер: US20190339575A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, SONODA Hidehiro
Принадлежит:

A liquid crystal display device includes a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first alignment film is a photo alignment film, and a thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy formula (2), 1. A liquid crystal display device comprising:a first substrate;a first alignment film on the first substrate;a second substrate;a second alignment film on the second substrate;a liquid crystal layer sandwiched between the first alignment film and the second alignment film;a projecting portion on the second substrate;a black matrix on the second substrate;a first electrode in a pixel region, the first electrode between the first alignment film and the first substrate; andan insulation film between the first substrate and the liquid crystal layer,wherein the first electrode and the insulation film are covered by the first alignment film,wherein the first alignment film or the second alignment film is a photo alignment film, and {'br': None, 'd2 Подробнее

Номер записи: 176
24-12-2015 дата публикации

Liquid crystal display device and manufacturing method thereof

Номер: US20150370102A1
Автор: Hidehiro Sonoda, Masaki Matsumori, Noboru Kunimatsu, Toshiki Kaneko, Yasushi Tomioka
Принадлежит: Japan Display Inc

The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film.

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Номер записи: 177
21-12-2017 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20170363914A1
Автор: KUNIMATSU Noboru, MATSUI Chikae, Matsumori Masaki, Matsumoto Yuko, SONODA Hidehiro, TOMIOKA Yasushi, Uchino Shoichi
Принадлежит:

A liquid crystal display device includes a TFT substrate having a first alignment film and an opposing substrate having a second alignment film with liquid crystals sandwiched therebetween. One of the first and second alignment films, comprises a first polyimide produced via polyamide acid ester containing cyclobutane as a precursor and a second polyimide produced via polyamide acid as a precursor. The polyamide acid has a higher polarity than that of the polyamide acid ester. The one of the first and second alignment films is responsive to photo-alignment. A first side of the one of the first and second alignment films is adjacent to the liquid crystals, and a second side thereof is closer to one of the TFT substrate and the counter substrate than the first side. The first side contains more of the first polyimide and less of the second polyimide than the second side. 1. A liquid crystal display device comprising:a TFT substrate in which a first alignment film is formed on a plurality of pixel electrodes, a common electrode, an image signal line, an organic passivation film, an inorganic passivation film, and a plurality of TFTs;an opposing substrate which faces the TFT substrate and in which an alignment film is formed,liquid crystals sandwiched between the first alignment film of the TFT substrate and the alignment film of the opposing substrate;wherein the organic passivation film is formed on the image signal line and the TFT,wherein the common electrode is formed between the organic passivation film and the inorganic passivation film, the common electrode covers the image signal line in a plan view,wherein the plurality of pixel electrodes is formed between the inorganic passivation film and the first alignment film,wherein the plurality of pixel electrodes electrically connect with the plurality of TFTs,wherein the pixel electrode has a first portion and a second portion adjacent to the first portion via a slit,wherein the thickness of the organic passivation ...

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Номер записи: 178
21-12-2017 дата публикации

Liquid crystal display device

Номер: US20170363920A1
Автор: Hidehiro Sonoda, Noboru Kunimatsu, Yasushi Tomioka, Yosuke Hyodo
Принадлежит: Japan Display Inc

In a liquid crystal display device, a common electrode is formed on an organic passivation film, an interlayer insulating film is formed on the common electrode, a pixel electrode with a slit is formed on the interlayer insulating film, and a through hole is formed in the organic passivation film and the interlayer insulating film, so that the pixel electrode is connected to a source electrode of a TFT through the through hole. Further, the taper angle around the upper base of the through hole is smaller than the taper angle around the lower base. Thus, the alignment film material can easily flow into the through hole when the diameter of the through hole is reduced to connect the pixel and source electrodes, preventing display defects such as uneven brightness due to the absence of the alignment film or due to the alignment film irregularity around the through hole.

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Номер записи: 179
12-11-2020 дата публикации

LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20200355949A1
Автор: Hirota Takenori, KANAYA Yasuhiro, KANEKO Toshiki, SONODA Hidehiro
Принадлежит:

A reliability of seal portion of a liquid crystal display device can be improved by the following structure. A liquid crystal display device includes: a TFT substrate which includes a display region and a terminal part, and has an inorganic insulating film formed on an organic passivation film and an alignment film formed over the inorganic insulating film; a counter substrate, the TFT substrate and the counter substrate bonded together by a sealing material formed at a seal part surrounding the display region; and a liquid crystal sealed inside. At the seal part, a transparent conductive oxide film is formed between the inorganic insulating film and the alignment film. The transparent conductive oxide film exists inside an edge of the TFT substrate and hence, the edge of the TFT substrate is free of the transparent conductive oxide film. 1. A display device comprising:a first substrate having a first inorganic film, an organic film provided on the first inorganic film, a plurality of lines provided between the first inorganic film and the organic film, a second inorganic film provided on the organic film, and a transparent conductive film provided on the second inorganic film;a second substrate opposed to the first substrate; anda sealing material bonded to the first substrate and the second substrate,whereinthe sealing material is located in a peripheral area which surrounds a display area,the plurality of lines are located in the peripheral area, and overlapped with the sealing material,the organic film has a hole in the peripheral area,the transparent conductive film is located between the hole and the display area, and overlapped with the plurality of lines and the sealing material,the second inorganic film is in contact with the first inorganic film in the hole, andthe organic film and the second inorganic film are located between the transparent conductive film and the plurality of lines.2. The display device according to claim 1 , whereinthe plurality of ...

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Номер записи: 180