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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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Форма поиска

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 7423. Отображено 100.
26-01-2012 дата публикации

Light guide and image reading apparatus

Номер: US20120019877A1
Автор: Akihiko Naya, Hirokazu Ichikawa, Yoshiro Yamaguchi
Принадлежит: Fuji Xerox Co Ltd

A light guide includes: a body which is a light-transmitting member and has light incidence surfaces as two end surfaces in a longitudinal direction and a light output surface which is one of side surfaces extending in the longitudinal direction; and light absorbing members which are provided on the light output surface or at least one, adjacent to the light output surface, of the side surfaces of the body and have a function of absorbing light that shines on the body from outside the body.

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Номер записи: 1
22-03-2012 дата публикации

Light converting optical structure and lighting device utilizing the same

Номер: US20120069575A1
Автор: Chi-Jen Kao, Wei-Hsin Hou, Wen-Chiun ING, Zhi-Wei Koh
Принадлежит: Luxingtek Ltd

Embodiments of the present invention include a light converting structure, a light accommodating structure, and a lighting device. The light converting structure includes a bottom conical recess to accommodate a light source, and a top conical recess to distribute the lights emitted from the light source. The light accommodating structure includes a through hole with a small opening and a large opening. A light source is accommodated in the through hole at the large opening, and the lights emitted from the light source output at the small opening. The lighting device utilizing the light converting structure and/or the light accommodating structure obtains a thinner configuration.

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Номер записи: 2
29-03-2012 дата публикации

Backlight device and liquid crystal display device

Номер: US20120075326A1
Автор: Ryuji Tsuchiya, Shota Ikebe
Принадлежит: Harison Toshiba Lighting Corp

According to an embodiment, a backlight device includes a plurality of light guide plates, a plurality of light sources and a light-source substrate. The light guide plates overlap each other with a same light output direction; each of the light guide plates includes a plurality of stripe-shaped projections aligned on a light output face and a light output pattern. Each of the light sources emits light incident into any one of the light guide plates and propagating in an extending direction of the stripe-shaped projections. The light-source substrate includes a plurality of interconnections, a turning-on signal is selectively supplied via the interconnections to at least one of light source groups, and each of the light source groups includes at least one of the light sources. At least one part of a light emission face, including the light output faces, emits light output from the light source group receiving the turning-on signal.

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Номер записи: 3
10-05-2012 дата публикации

Free form lighting module

Номер: US20120113679A1
Автор: Erik Boonekamp
Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

The invention provides an illumination device comprising a waveguide having a first face, a second face, and a waveguide edge. The device further comprises a LED light source, wherein the LED light source is arranged to couple at least part of the light source light into the waveguide element. The device also comprises a first transmissive reflector, arranged at the first face side, and a second transmissive reflector, arranged at the second face side. The LED light source, the waveguide, the first transmissive reflector, and the second transmissive reflector, are arranged to generate the first and second light in a direction away from the first face and in a direction away from the second face, respectively. Such an illumination device may allow lighting of a room, for instance via the ceiling with uplight, and lighting of a specific area in the room with downlight.

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Номер записи: 4
28-06-2012 дата публикации

Bistable chiral splay nematic mode crystal display device

Номер: US20120162578A1
Автор: Dong-Guk Kim, Dong-Jin Kim, Jae-Chang Kim, Joong-Ha Lee, Wook-Sung Kim
Принадлежит: LG Display Co Ltd

A bistable chiral splay nematic mode liquid crystal display device including a first substrate; a first electrode on the first substrate, the first electrode having a plate shape; a first insulating layer covering the first electrode; a second electrode and a third electrode on the first insulating layer along a first direction; a second substrate facing the first substrate; a fourth electrode on the second substrate, the fourth electrode having a plate shape; a second insulating layer covering the fourth electrode; a fifth electrode and a sixth electrode on the second insulating layer along a second direction; and a bistable chiral splay nematic liquid crystal layer between the first substrate and the second substrate.

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Номер записи: 5
05-07-2012 дата публикации

Light guide with uniform light distribution

Номер: US20120170310A1
Автор: Douglas Carl Burstedt, Ion Bita, Kebin Li, Lai Wang, Yi-Fan Su
Принадлежит: Qualcomm Mems Technologies Inc

This disclosure provides systems, methods and apparatus for providing illumination by using a light guide to distribute light. In one aspect, the light guide has a light input edge into which light is injected and transverse edges transverse to the light input edge. The transverse edges are smooth and act as specular reflectors. The light input edge is rough and provides a diffusive interface. The light emitters are adjacent and centered along the light input edge, with the pitch of the light emitters being about ΔL, where ΔL is the distance between the transverse edges divided by the number of light emitters. The light guide can be provided with light turning features that redirect light out of the light guide. In some implementations, the redirected light can be applied to illuminate a display.

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Номер записи: 6
19-07-2012 дата публикации

Display device and backlight module thereof

Номер: US20120182494A1
Автор: Dong-Xian Yu, Ying-Che Huang
Принадлежит: Hannstar Display Corp

The display apparatus includes a backlight module, which includes a light source, a light-emitting surface, a light-emitting counter surface and a flexible circuit. The light-emitting counter surface is disposed opposite to the light-emitting surface. The flexible circuit is electrically connected with the light source, and has a portion covering the light-emitting counter surface.

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Номер записи: 7
02-08-2012 дата публикации

Electronic Device Display Structures with Controlled Chassis Reflections

Номер: US20120195066A1
Автор: David A. Doyle, Joshua G. Wurzel, Shawn R. Gettemy
Принадлежит: Individual

A display may be based on a display unit that is mounted within a chassis. The display unit may be a liquid crystal display unit. A backlight may be used to illuminate the display unit. The backlight may include a light guide plate. Light from a light source may be launched into an edge of the light guide plate. Scattered light from the light guide plate may travel vertically along a vertical axis that is perpendicular to the plane that contains the light guide plate. The scattered light may pass through the display unit and may serve as backlight for the display. The light guide plate may be mounted within a rectangular opening in the chassis. The edges of the rectangular opening and the edges of the light guide plate may be configured to reduce excessive reflections. These edges may have reflection-reducing coatings, non-planar surfaces, and other reflection-reducing configurations.

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Номер записи: 8
09-08-2012 дата публикации

Optical element, light source device, and projection-type display device

Номер: US20120200831A1
Автор: Shin Tominaga
Принадлежит: NEC Corp

An optical element is provided with: first polarization-separation layer ( 13 ) that is laminated on first surface ( 12 b ) of light guide body ( 12 ) and that, of the light incident from light guide body ( 12 ), transmits X-polarized light and reflects Y-polarized light that is orthogonal to the X-polarized light; polarization hologram layer ( 14 ) that is laminated on first polarization-separation layer ( 13 ) and that diffracts to a prescribed diffraction angle the X-polarized light that is incident within a prescribed range of angles of incidence and converts the X-polarized light to Y-polarized light; second polarization-separation layer ( 15 ) that is laminated on polarization hologram layer ( 14 ) and that, of the light incident from polarization hologram layer ( 14 ) transmits Y-polarized light and reflects X-polarized light; reflection layer (18) provided on second surface ( 12 c ) side of light guide body ( 12 ); and phase difference layer ( 17 ) that is provided between first surface ( 12 b ) of light guide body ( 12 ) and reflection layer ( 18 ) and that imparts a phase difference before and after transmission to mutually orthogonal polarization components of the incident light.

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Номер записи: 9
09-08-2012 дата публикации

Flat panel light source for a transillumination device of a microscope

Номер: US20120201047A1
Автор: Harald Schnitzler, Reto Züst, Robert Paulus
Принадлежит: Leica Microsystems Schweiz AG

A flat panel light source ( 100 ) for a transillumination device of a microscope comprises a plate-shaped light guide ( 110 ) having a lower and an upper boundary surface and at least one lateral surface ( 113 to 116 ), and at least one light-emitting means ( 120, 122 ) arranged to radiate light ( 130 ) into the light guide ( 110 ) from at least two different directions, via at least one lateral surface serving as a light entrance surface, such that light propagates in the light guide ( 110 ) by total reflection, the total reflection being disrupted in defined fashion by an element ( 140 ) abutting against a contact surface at the lower boundary surface of the light guide ( 110 ) so an outcoupling of light occurs on the upper boundary surface, the planar area of the contact surface being smaller than that of the lower boundary surface, the element ( 140 ) producing a directed reflection of the light ( 130 ).

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Номер записи: 10
20-09-2012 дата публикации

Lighting assembly with adjustable light output

Номер: US20120236530A1
Автор: Alexey Titov, Fumitomo Hide, Ian Hardcastle, Jeffery R. Parker, Timothy A. McCollum
Принадлежит: Individual

A lighting assembly includes a light guide to propagate light by total internal reflection and having a light output region on a major surface thereof. The lighting assembly also includes an optical adjuster having a major surface juxtaposed with and conforming to the light guide's major surface. The optical adjuster has a first region and a second region, the first region having a light modifying characteristic. The optical adjuster and light output region are variably positionable relative to one another to selectively apportion light emitted from the light output region between the first region and the second region. In this way, light apportioned to the first region is modified by the light modifying characteristic so that light output from the lighting assembly is modified based on relative positioning of the optical adjuster and the light guide.

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Номер записи: 11
04-10-2012 дата публикации

Backlight unit and display apparatus using the same

Номер: US20120250293A1
Автор: Ki Hyun Kim, Se Jin Ko, Tae Jin Kim, Youn Mo Jeong
Принадлежит: LG Innotek Co Ltd

A backlight unit and a display apparatus using the same are disclosed. The backlight unit includes a first reflector, a second reflector and at least one light source disposed between the first reflector and the second reflector. The second reflector includes a specular reflection area and a diffuse reflection area. The specular reflection area occupies about 5 to 50% of an entire area of the second reflector.

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Номер записи: 12
01-11-2012 дата публикации

Backlight Module and Liquid Crystal Display Device

Номер: US20120274874A1
Автор: Po-Ying Lin, Weiwei Zheng
Принадлежит: Shenzhen China Star Optoelectronics Technology Co Ltd

A backlight module is provided in the present disclosure. The backlight module comprises a light guide panel and at least one point light source adapted to provide light rays for the light guide panel. The light guide panel comprises a primary light guide region and a secondary light guide region with respect to the point light source, and a plurality of scattering microstructures are disposed in the secondary light guide region to scatter the light rays entering the secondary light guide region. The backlight module features uniform intensity and can significantly reduce or even eliminate occurrence of the so-called hotspot phenomenon. A liquid crystal display (LCD) device using the backlight module is also provided.

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Номер записи: 13
08-11-2012 дата публикации

Light guide plate, surface illuminating device, and liquid crystal display device

Номер: US20120281166A1
Автор: Osamu Iwasaki
Принадлежит: Fujifilm Corp

To provide a light guide plate yielding a high light use efficiency and capable of emitting light with minimized unevenness in luminance and yielding a distribution such that the central area of the screen is brighter than the periphery, a light guide plate includes a rectangular light exit plane, and a light entrance plane for admitting light traveling substantially parallel to the light exit plane, a rear plane provided opposite from the light exit plane, and scattering particles dispersed inside, the light guide plate further including two or more layers lying on one another in a direction substantially perpendicular to the light exit plane and having different particle densities of scattering particles, the two or more layers including a first layer having a particle density of Npo and a second layer having a particle density of Npr and located closer to the rear plane than the first layer, Npo and Npr having a relation Npo<Npr, the cross section perpendicular to the light entrance plane having a concave configuration, the thicknesses of the first layer and the second layer substantially perpendicular to the light exit plane changing individually, the combined particle density in a direction perpendicular to the light entrance plane changing.

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Номер записи: 14
22-11-2012 дата публикации

Lighting device, display device and television receiver

Номер: US20120293715A1
Автор: Nobuhiro Kasai
Принадлежит: Sharp Corp

In an edge-light type lighting device, expansion or contraction of the light guide plate is eliminated without bending or warping, and light sources and light entrance surfaces are not contacted with each other and not damaged. A backlight unit 24 includes an LED board 30 , an LED light source 28 on a surface of the board 30 , a plate-shaped light guide plate 20 having a light entrance surfaces 20 a that are opposite side surfaces thereof and provided such that each entrance surface 20 a faces the LED light source 28 on the LED board 30 , and a holding member 19 provided to hold the LED board 30 and the light guide plate 20 in a thickness direction thereof. The holding member 19 includes a deformation allowance portion 36 a that allows the guide plate 20 to be deformed in a planar direction thereof and a restriction portion 36 b configured to restrict contact between the LED light source 28 and the entrance surface 20 a of the guide plate 20.

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Номер записи: 15
29-11-2012 дата публикации

Light guides and backlight systems incorporating light redirectors at varying densities

Номер: US20120300497A1
Автор: Je Hong Kim, Jignesh Gandhi
Принадлежит: Pixtronix Inc

Light guides and backlight systems are disclosed that include one or more groups of geometric light redirectors whose arrangement and/or orientation across the surface of a light guide varies to improve light emission uniformity and to reduce visual artifacts.

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Номер записи: 16
29-11-2012 дата публикации

Light guide element, light source module, and display

Номер: US20120300498A1
Автор: Chun-hsien Cho
Принадлежит: Cal Comp Electronics and Communications Co Ltd, Kinpo Electronics Inc

A light guide element, a light source module, and a display are provided. The display includes a display panel and the light source module. The light source module includes a light source and the light guide element, wherein light emitted by the light source is guided toward the display panel by the light guide element. The light guide element includes a plurality sidewalls and a bottom wall. The sidewalls surround the bottom wall and are connected with each other to form a light entering opening, a light exiting opening, and an inner reflection room. Each of the sidewalls and the bottom wall has at least one reflection surface, wherein the reflection surface faces the inner reflection room.

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Номер записи: 17
10-01-2013 дата публикации

Liquid crystal display

Номер: US20130010227A1
Автор: Tsang-Chi Wang, Wang-Yang Li
Принадлежит: Chi Mei Corp

A liquid crystal display including a display panel, an optical film and a backlight module is disclosed. The optical film is disposed on the display panel and has a plurality of micro structures facing the display panel arranged on the optical film. The period of the arranged micro structures is between 90 μm˜3 μm. The backlight module and the optical film are disposed on opposite sides of the display panel respectively. The backlight module is used for emitting a light, which penetrates the display panel and reaches the optical film. The light is deflected by the micro structures of the optical film and then is emitted to the outside at an angle of 20˜70 degrees relative to a normal line of the light outputting plane of the optical film.

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Номер записи: 18
17-01-2013 дата публикации

Device and method for attaching protective film to and removing protective film from light guide plate

Номер: US20130015335A1
Автор: Da-Wei Lin, Tai-Cherng Yu
Принадлежит: Hon Hai Precision Industry Co Ltd

A device includes a first roller to roll down a protective film around the first roller, a conveying device to convey a light guide plate (LGP), and a first fan to generate charged ions and blow out the charged ions. While the rolled-down protective film is being placed onto the LGP being conveyed by the conveying device, the charged ions blown out by the first fan are adhered to a first surface of the protective film to generate static electricity and the first surface of the protective film is attached to the LGP by the static electricity.

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Номер записи: 19
31-01-2013 дата публикации

Backlight unit and display device using the same

Номер: US20130027966A1
Автор: Jin In Lee, Se Jin Ko
Принадлежит: LG Innotek Co Ltd

Disclosed is a backlight unit and a display device using the same, which includes a first reflector, a second reflector 300 and at least one light source module 100 disposed between the first and second reflectors, wherein a back surface of the first reflector comprises an inclined plane 201 and a flat surface 202 , with facing the second reflector, and the inclined plane is adjacent to the light source and the flat surface is extended from an end of the inclined plane, with the inclined plane and the flat surface being collinear.

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Номер записи: 20
31-01-2013 дата публикации

Electronic device with light adjusting member

Номер: US20130027969A1
Автор: He-Hui Yang, Kai-Kuei Wu, Kun-Chih Hsieh, Shuang-Hong Xiao
Принадлежит: Hon Hai Precision Industry Co Ltd, Hongfujin Precision Industry Shenzhen Co Ltd

An electronic device includes a shell, a circuit board, a light source mounted on the circuit board, a light guiding member defining a first pattern, a transparent light adjusting member defining a second pattern, a driving member, a sliding member slidably received in the shell, an optical sensor and a processor. The light adjusting member is revolvably mounted to the shell. The sliding member is mechanically coupled to the light adjusting member. The driving member is configured to drive the sliding member to move linearly so as to enable the sliding member to drive the light adjusting member to revolve, thereby rotation of the second pattern relative to the first pattern causing variation of light intensity passing through the light adjusting member. The optical sensor detects the ambient brightness. The process controls the driving member based on the ambient brightness.

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Номер записи: 21
31-01-2013 дата публикации

Light guide plate with adjustable illumination angle, illumination device with adjustable illumination angle, and method for adjusting illumination angle thereof

Номер: US20130027975A1
Автор: Ching-Huan Liao, Chuan-Fa Lin, Chung-I Chiang
Принадлежит: WALSIN LIHWA CORP

A light guide plate with an adjustable illumination angle and an illumination device using the same are provided. The light guide plate has a first surface and a second surface opposite to the first surface. The second surface further has a plurality of deformable microstructures thereon. The deformable microstructures will be deformed when an external force is applied to the deformable microstructures. The illumination device has a light source and a light guide plate that is disposed next to the light source. A light beam emitted from the light source enters into the light guide plate and leaves the light guide plate via reflecting or refracting by the deformable microstructures. By applying a different external force to the light guide plate, the deformation of the deformable microstructures will be varied. Therefore, the illumination angle of the light beam could be changed according to the deformation of the deformable microstructures.

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Номер записи: 22
14-02-2013 дата публикации

Back Light Module and Liquid Crystal Display Device Using the Same

Номер: US20130038813A1
Автор: Tian Zhang
Принадлежит: Shenzhen China Star Optoelectronics Technology Co Ltd

The present invention discloses a backlight module and a LCD using the same. Said backlight module comprises a light guide plate, a reflection sheet and a backplane, wherein said reflection sheet is arranged under the light guide plate; said backplane is arranged under the reflection sheet and partially supports the reflection sheet; and said reflection sheet is bent to form one or more supporting ribs for supporting the backplane to prevent the reflection sheet from drooping. The present invention solves the problem that the reflection sheet is affected by heat and then is easy to droop, by bending the reflection sheet of the backlight module to form the one or more supporting ribs for supporting the reflection sheet, and has the advantages of low cost and no negative influence on other components and system structure of the backlight module.

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Номер записи: 23
21-02-2013 дата публикации

Display device

Номер: US20130044511A1
Автор: Munenori Motooka, Nobuyuki SUZUKI
Принадлежит: Japan Display East Inc

A backlight unit includes: a wiring board having a light source mounted thereon; a light guide plate; a light-shielding pressure-sensitive adhesive sheet; and a light diffusion sheet. The front surface of the light guide plate includes an effective region serving as the planar light source and a light entering region ranging from the end surface into which the light enters to the effective region. The wiring board and the light-shielding pressure-sensitive adhesive sheet each have a part positioned in the light entering region. The light diffusion sheet is arranged from the effective region to the light entering region, and overlaps with the light-shielding pressure-sensitive adhesive sheet in the light entering region. On a side closer to the effective region with respect to the light-shielding pressure-sensitive adhesive sheet, the light entering region is covered with the light diffusion sheet without a gap.

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Номер записи: 24
28-02-2013 дата публикации

Illumination unit and display apparatus using the same

Номер: US20130050990A1
Автор: Kenji Takano, Masayuki Tanabe, Mika Tanimura, Mikio Shiraishi, Reiji Nakamura, Shoji Yamamoto, Yasuaki Ohara, Yoshifumi Shimane
Принадлежит: Hitachi Consumer Electronics Co Ltd

An illumination unit of the present invention includes a tabular light guide plate having a light emitting surface for emitting light coming from an LED as planar light, wherein a recessed portion is formed in the opposite surface of the light emitting surface of the light guide plate, and wherein the LED is provided in the recessed portion so that the optical axis of the LED becomes parallel to the light emitting surface of the light guide plate. Then, a dimming pattern is provided at a location corresponding to the LED of the light emitting surface of the light guide plate, and the dimming pattern includes a main portion covering the LED on the light emitting surface side, and protrusions radially extending toward a light emitting direction of the LED around the LED.

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Номер записи: 25
14-03-2013 дата публикации

Illumination Apparatus with High Conversion Efficiency and Methods of Forming the Same

Номер: US20130063964A1
Автор: Eran Fine, Noam MEIR
Принадлежит: Oree Inc

In various embodiments, an illumination apparatus includes a substantially planar waveguide or a light box, at least one light source emitting light therein, a layer of photoluminescent material for converting a portion of the light to a different wavelength, a reflector for reflecting light back-scattered from the photoluminescent material, and an optically active layer for separating light interacting with the photoluminescent material from light propagating within the waveguide or light box.

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Номер записи: 26
14-03-2013 дата публикации

Planar front illumination system having a light guide with micro scattering features formed thereon and method of manufacturing the same

Номер: US20130063968A1
Автор: Charles Neugebauer, William Saperstein
Принадлежит: Nook Digital LLC

A system for illuminating a reflective display or other material from a planar front device and a method of manufacture thereof. The system includes a light guide plate that conducts light from an edge light source across the face of a reflective display. Micro scattering features are formed on an outer surface of the light guide, farthest from the reflective display or material. A stepped index layer is formed on the surface of light guide plate containing the micro scattering features. The stepped index layer has an index of refraction lower than an index of refraction of the light guide plate to assist in the total internal reflection of light injected into the light guide plate. The micro scattering features, light reflecting areas, redirect luminous flux toward the display. In one embodiment, the micro scattering features are formed as white dots on the light guide plate. A black absorbing layer can be added to each white scattering dot in order to improve the apparent contrast when the front light is deactivated.

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Номер записи: 27
18-04-2013 дата публикации

Lighting device, display device and television device

Номер: US20130093965A1
Автор: Yoshitake Ishimoto
Принадлежит: Individual

An object is to provided a lighting device in which damage due to friction between a reflection sheet and a light guide plate is reduced or suppressed even if a stress is applied toward the reflection sheet by a housing due to asperities of a bottom plate of the housing. A backlight unit 24 according to the present invention includes a light guide plate 20 , an LED unit 32 , a reflection sheet 26 , a backlight chassis 22 , and a cushion sheet 27 . The light guide plate 20 has a light entrance surface 20 a that is a side surface, a light exit surface 20 b that is a plate surface, and an opposite surface 20 c that is an opposite surface from the light exit surface 20 b . The LED unit 32 is arranged opposite the light entrance surface 20 a of the light guide plate 20 . The reflection sheet 26 is arranged so as to be in contact with the opposite surface 20 c of the light guide plate 20 . The backlight chassis 22 holds at least the reflection sheet 26 and the light guide plate 20 therein. The reflection sheet 26 and the light guide plate 20 are arranged on a surface of the bottom plate 22 a in this sequence from the bottom plate 22 a side. The cushion sheet 27 is configured to absorb a stress applied by the bottom plate 22 a toward the reflection sheet 26 and arranged between the backlight chassis 22 and the reflection sheet 26.

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Номер записи: 28
02-05-2013 дата публикации

Light guide panel and optical system including the same

Номер: US20130107569A1
Автор: Takayoshi Suganuma
Принадлежит: Enplas Corp

A light guide panel 1 having a reflective sub-wavelength diffraction grating 3 generates zero-order light and minus first-order light in the reflective sub-wavelength diffraction grating 3 , extracts the minus first-order light as outgoing light, and transmits the zero-order light to generate new minus first-order light by satisfying the conditional expressions: sin −1 (1/ n )<θ 1   (1) λ/{ n (sin θ 1 +1)}≦Λ<min[2λ/{ n (sin θ 1 +1)},λ/{ n (−sin θ 1 +1)}]  (2) sin −1 {sin θ 1 −λ/( n ·Λ)}<sin −1 (1/ n )  (3) where, λ: wavelength of light n: refractive index of a light guide panel main body Λ: period of the reflective sub-wavelength diffraction grating θ 1 : angle of incidence of the light in relation to the reflective sub-wavelength diffraction grating

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Номер записи: 29
30-05-2013 дата публикации

Back light unit

Номер: US20130135897A1
Автор: Choongyop RHEW, Daisoung PARK, Hyojin Lee
Принадлежит: LS Tech Co Ltd

A backlight unit is provided. The backlight unit includes a light guide panel for guiding light, one or more light sources installed at one side surface of the light guide panel, a reflector sheet installed on a bottom surface of the light guide panel, and an optical sheet installed on a top surface of the light guide panel. A plurality of grooves and pump mountains around the grooves are formed on a top surface of the reflector sheet.

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Номер записи: 30
04-07-2013 дата публикации

Backlight Unit Integrally Formed with Conductive, Chemically Toughened Glass and Method for Fabricating the same

Номер: US20130170246A1
Автор: Shui-Lung Chen
Принадлежит: Individual

A backlight unit integrally formed with conductive, chemically toughened glass and method for fabricating the same is disclosed. The integrally formed backlight unit uses conductive, chemically toughened glass as substrate and comprises a diffusion layer, a light guide layer, an optical microstructure layer, a transparent layer, a reflective layer and a light source module. The integrally formed backlight unit is fabricated using photochemical lithography, printing-coating, and ultrasonic hot melt adhesion processes, and offers the advantages of high luminance, ultra thinness and high efficiency in fabrication. The backlight unit product can be designed as bottom lit or edge lit and used mainly for the illumination of keyboards or non-self-luminous display devices.

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Номер записи: 31
04-07-2013 дата публикации

LIGHT GUIDE PLATE HAVING SAG CONTROL PATTERNS AND BACK LIGHT UNIT USING THE SAME

Номер: US20130170248A1
Автор: Eom Jun Phill, Hong Beom Sun, Lee Dong Hyun, Seong Dong Mug
Принадлежит: LG INNOTEK CO., LTD.

The present invention relates to a backlight unit with sag control patterns, comprising a light source formed in a side surface of a light guide plate; and a plurality of optical patterns formed on a lower surface of the light guide plate, sag of the plurality of optical patterns increasing as the optical patterns become more distant from the light source. By controlling sag of optical patterns formed in a light guide plate, efficiency of light emitted from a backlight unit can be improved and uniformity of the light can be maintained. Also, since sag of optical patterns can be controlled, by increasing the number of optical patterns (by improving fill factor), light efficiency and uniformity can be controlled easily. Also, compared with a conventional method for manufacturing white dot patterns, white dot patterns can be more efficiently manufactured in terms of development time and costs. 1. A light guiding plate with sag control patterns , comprising:one surface emitting light and the other surface opposite to the light emitting surface, the other surface being equipped with one or more optical patterns, where sag increases as the optical patterns become more distant from a light source.2. The light guide plate of claim 1 , wherein the optical pattern is a concave pattern formed in a depth direction of the light guide plate.3. The light guide plate of claim 2 , wherein each of the optical patterns has the same diameter.4. The light guide plate of claim 3 , wherein the optical patterns are disposed uniformly.5. The light guide plate of claim 3 , wherein shape of the optical pattern is formed by using one or more from among a micro lens claim 3 , a prism claim 3 , a pyramid claim 3 , and a lenticular lens.6. The light guide plate of claim 3 , wherein sag of the optical patterns satisfy a range of 0.01 to 0.5.7. The light guide plate of claim 6 , wherein diameter of the optical pattern ranges from 1 μm to 3 mm.8. A backlight unit claim 6 , comprising a light guide ...

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Номер записи: 32
25-07-2013 дата публикации

COLOR FILTER AND EDGE-TYPE BACKLIGHT MODULE USING THE SAME

Номер: US20130188390A1
Автор: Chen Cheng-Huan, Yao Po-Hung
Принадлежит: National Tsing Hua University

A color filter comprises a first filter element and a second filter element. The first filter element includes a plurality of arrayed filter regions allowing a first spectral component of incident light to pass and reflecting other spectral components of the incident light. The second filter element includes a plurality of arrayed filter regions allowing a second spectral component of the incident light to pass and reflecting other spectral components of the incident light. The center of the filter regions of the second filter element is deviated from the center of the filter regions of the first filter element so that the light reflected from the first filter element can pass through the second filter element. Thereby is enhanced the energy efficiency of the color filter. An edge-type backlight module using the abovementioned color filter is also disclosed. 1. A color filter comprising:a first filter element comprising a plurality of arrayed filter regions and a light-permeable region, wherein said filter regions of said first filter element allow a first spectral component of incident light to pass and reflect other spectral components of said incident light, and said light-permeable region allows said incident light to pass; anda second filter element arranged on said first filter element and comprising a plurality of arrayed filter regions and a light-permeable region, wherein said filter regions of said second filter element allow a second spectral component of said incident light to pass and reflect other spectral components of said incident light, said light-permeable region allows said incident light to pass, and a center of said filter regions of said second filter element is deviated from a center of said filter regions of said first filter element.2. The color filter according to further comprising:a third filter element arranged on said second filter element and comprising a plurality of arrayed filter regions and a′ light-permeable region, wherein said ...

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Номер записи: 33
01-08-2013 дата публикации

BACKLIGHT UNIT

Номер: US20130194823A1
Автор: INATA Toru, Suzuki Takeshi, YAGI Shugo
Принадлежит: SHARP KABUSHIKI KAISHA

A backlight unit includes a light source capable of emitting light, and a light guide plate including a peripheral surface on which the light from the light source is incident, a main surface provided to be connected with the peripheral surface, and a main surface facing the main surface with the peripheral surface interposed therebetween, the light guide plate including a reflection surface capable of reflecting the light that has entered from the peripheral surface toward the main surface, and a lens formed on the main surface capable of condensing the light reflected by the reflection surface and emitting the light to outside. 113-. (canceled)14. A backlight unit comprising:a light source capable of emitting light;a light guide body including a peripheral surface, the peripheral surface having an incident surface on which the light from said light source is incident and which has a first end portion and a second end portion, a first side surface provided to be connected with said first end portion of said incident surface, a second side surface provided to be connected with said second end portion of said incident surface, and an end surface positioned opposite to said incident surface, and including a first main surface provided to be connected with said peripheral surface, and a second main surface facing said first main surface with said peripheral surface interposed therebetween;a reflection sheet arranged to face one of said first main surface and said second main surface; anda prism sheet arranged to face the other of said first main surface and said second main surface, whereinsaid first main surface is provided with a plurality of prism grooves extending in a direction from said first side surface toward said second side surface and arranged in a direction from said incident surface toward said end surface,each of said plurality of prism grooves is formed substantially in the shape of a right triangle in cross section, and includes a unit reflection ...

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Номер записи: 34
12-09-2013 дата публикации

ILLUMINATION DEVICE HAVING VISCOELASTIC LIGHTGUIDE

Номер: US20130235614A1
Автор: Aho Erik A., Brott Robert L., BRYAN William J., Kristoffersen Martin, Mazurek Mieczyslaw H., Meis Michael A., Schaffer Kevin R., SCHULTZ John C., Sherman Audrey A., Sykora MICHAEL J., Wolk Martin B.
Принадлежит:

An illumination device, such as a backlight for electronic display devices, is disclosed. The illumination device includes a viscoelastic lightguide optically coupled to a light source, and a nanovoided polymeric layer is used in conjunction with the lightguide to manage light emitted by the light source. The viscoelastic lightguide may be a pressure sensitive adhesive. 1. An illumination device comprising: a viscoelastic lightguide, and', 'a nanovoided polymeric layer disposed on the viscoelastic lightguide, the nanovoided polymeric layer comprising a plurality of the interconnected nanovoids; and, 'an optical article comprising'}a light source optically coupled to the viscoelastic lightguide such that light emitted by the light source enters the viscoelastic lightguide and is transported within the lightguide by total internal reflection.2. The illumination device of claim 1 , wherein the interconnected nanovoids have an average size of less than about 0.7 micron.3. The illumination device of claim 1 , wherein the nanovoided polymeric layer has an effective index of refraction of from about 1.15 to about 1.45.4. The illumination device of claim 1 , the nanovoided polymeric layer comprising a binder and a plurality of nanoparticles claim 1 , wherein a weight ratio of the binder to the plurality of nanoparticles is greater than about 1:2 claim 1 , and a volume fraction of the interconnected nanovoids in the nanovoided polymeric layer is not less than about 20%.5. The illumination device of claim 4 , wherein the nanoparticles comprise reactive groups that are chemically bound to the binder.6. The illumination device of claim 4 , wherein the nanoparticles are not chemically bound to the binder.7. The illumination device of claim 4 , wherein the nanoparticles comprise elongated particles having an average aspect ratio that is not less than about 2.8. The illumination device of claim 4 , wherein the nanoparticles comprise spherical particles.9. The illumination device ...

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Номер записи: 35
26-09-2013 дата публикации

LIGHT SOURCE MODULE

Номер: US20130250611A1
Автор: Lee Hsin-Hung, Lin Hung-Sen, Wu Wei-Ching, Yang Chiao-Chih
Принадлежит: YOUNG LIGHTING TECHNOLOGY INC.

A light source module including a light guide plate, at least one light emitting device, a light-controlling pattern element, and an absorbing pattern element is provided. The light guide plate has a light emitting surface, a first surface opposite the light emitting surface, and at least one opening. The opening passes through the first surface and extends from the first surface toward the light emitting surface. The at least one light emitting device is disposed in the opening and arranged along an arranging direction. The light-controlling pattern element is disposed on the light emitting surface and covers the opening and the light emitting device. The opening faces towards the absorbing pattern element. The absorbing pattern element is disposed besides one of the at least one light emitting device and extends toward a side wall of the opening. Moreover, another two light source modules are also provided. 1. A light source module comprising:a light guide plate having a light emitting surface, a first surface opposite the light emitting surface, and at least one opening, wherein the opening passes through the first surface and extends from the first surface to the light emitting surface;at least one light emitting device disposed in the opening and arranged along an arranging direction;a light-controlling pattern element disposed on the light emitting surface and covering the opening and the light emitting device; andat least one optical film, the light-controlling pattern element disposed between the light emitting surface and the optical film, a minimum width of the light-controlling pattern element in a first direction being a, the first direction intersected with the arranging direction, and a shortest distance from the light emitting surface to the optical film being h, wherein a and h satisfy h.2111. The light source module as recited in claim 1 , wherein the light-controlling pattern element has at least one first hole claim 1 , a shortest distance between ...

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Номер записи: 36
26-09-2013 дата публикации

Display device and planar light source device

Номер: US20130250612A1
Автор: Hiroshi Kurihara
Принадлежит: Hitachi Displays Ltd, Panasonic Liquid Crystal Display Co Ltd

The present invention relates to a technique which makes a backlight used in a liquid crystal display device thin and light-weight. The present invention provides a liquid crystal display device which includes a display panel and a backlight arranged behind the display panel, wherein the backlight includes a film-like light guide member, a film-like light semi-transmissive member adhered to a first surface of the light guide member which faces the display panel in an opposed manner, a film-like reflective member adhered to a back surface of the light guide member opposite to the first surface, and a spot light source arranged at a position of the light guide member at which light is incident on the light guide member from the first surface or the back surface. A refractive index of the light semi-transmissive member is set smaller than a refractive index of the light guide member.

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Номер записи: 37
03-10-2013 дата публикации

Backlight module and liquid crystal display

Номер: US20130258244A1
Автор: Kuojun Fang
Принадлежит: Shenzhen China Star Optoelectronics Technology Co Ltd

The present invention discloses a backlight module and a liquid crystal display (LCD). A reflecting housing is disposed between a reflecting surface and an optical film. The reflecting housing comprises a first reflecting layer used to reflect the lights emitted from the light source to the reflecting surface, and a second reflecting layer used to reflect the lights emitted from the light source to the optical film. The optical film has reflection rates distributing along a predetermined trend, and the lights emitted to the optical film are through the optical film and uniformly emitting out in the reflection rates of the predetermined trend.

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Номер записи: 38
10-10-2013 дата публикации

Backlight Module and Liquid Crystal Display

Номер: US20130265523A1
Автор: Hu He, Kuang-Yao Chang, Zanjia Su
Принадлежит: Shenzhen China Star Optoelectronics Technology Co Ltd

A liquid crystal display (LCD) and a backlight module thereof are proposed. The backlight module includes a light guide plate (LGP), a first prism sheet, and a second prism sheet. The first prism sheet is disposed on the LGP. The second prism sheet is disposed on the first prism sheet. The first and second prism sheets both include a plurality of prisms. The plurality of prisms of the first prism sheet are perpendicular to a longer side of the LGP. The plurality of prisms of the second prism sheet form an angle with the longer side of the LGP, and the angle measures between 15 and 45 degrees. Since the backlight module and the plurality of prisms of the second prism sheet both form the angle between 15 and 45 degrees with the longer side of the LGP, brightness at a frontal viewing angle is enhanced and a viewing angle becomes wider.

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Номер записи: 39
14-11-2013 дата публикации

Planar light source apparatus and display apparatus equipped with the same

Номер: US20130300981A1
Автор: Seiji Sakai
Принадлежит: Mitsubishi Electric Corp

A planar light source apparatus includes a light guide plate, an LED arranged on a side surface of the light guide plate, and a functional liquid crystal film. The functional liquid crystal film is provided in a non-light-emitting surface of the light guide plate which is opposite to a light-emitting surface of the light guide plate, and is divided into a plurality of block region. Each of the block regions is individually controllable. Specifically, reflection and transmission of the functional liquid crystal film in each of the block regions are controlled according to an electrical signal, such as voltage.

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Номер записи: 40
05-12-2013 дата публикации

OPTICALLY TRANSMISSIVE SUBSTRATES AND LIGHT EMITTING ASSEMBLIES AND METHODS OF MAKING SAME, AND METHODS OF DISPLAYING IMAGES USING THE OPTICALLY TRANSMISSIVE SUBSTRATES AND LIGHT EMITTING ASSEMBLIES

Номер: US20130322120A1
Автор: Hide Fumitomo, McCollum Timothy A., Parker Jeffery R.
Принадлежит: Rambus Delaware LLC

Images are displayed in response to a video signal using a light emitting assembly having one or more optically transmissive substrates, films or sheets, each having at least one pattern of optical elements on or in the substrates, films or sheets. A plurality of light sources are configured to illuminate one or more output areas of one or more of the substrates, films or sheets. The light emitting assembly is configured to emit light through the pattern of optical elements and produce a predetermined luminance profile of the light emitting assembly. At least some adjacent substrates, films or sheets may have portions that overlap, and at least one pattern of optical elements on or in at least one side of the substrates, films or sheets may be configured so that discontinuities between the adjacent substrates, films or sheets are minimized. 1. A light emitting assembly comprising:a plurality of optically transmissive substrates, films, or sheets;the substrates, films, or sheets having an edge portion adjacent an edge portion of an adjacent substrate, film, or sheet;a plurality of light sources, each light source being configured to emit light into at least one area of the substrates, films, or sheets; andat least one pattern of optical elements at at least one side of the substrates, films, or sheets, wherein the optical elements are substantially smaller than the length and width of the substrates, films, or sheets, and the optical elements of the respective patterns at the adjacent substrates, films, or sheets adjacent seams between the adjacent edge portions of the adjacent substrates, films or sheets have shapes that substantially match one another to form substantially seamless transitions with minimal discontinuities in the optical element shapes at the seams to make the seams less visible.2. The light emitting assembly of claim 1 , wherein at least two of the adjacent substrates claim 1 , films claim 1 , or sheets each have a tapered cross sectional profile ...

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Номер записи: 41
12-12-2013 дата публикации

Spatially multiplexed imaging directional backlight displays

Номер: US20130328866A1
Автор: Harrold Jonathan, Robinson Michael G., Woodgate Graham J.
Принадлежит: REALD INC.

Disclosed is an imaging directional backlight that cooperates with a spatial light modulator to direct light into a first viewing window for one set of image pixels and into a second viewing window for a second set of image pixels. The waveguide may comprise a stepped structure, where the steps further comprise extraction features hidden to guided light, propagating in a first forward direction. Returning light propagating in a second backward direction may be refracted, diffracted, or reflected by the features to provide discrete illumination beams exiting from the top surface of the waveguide. Viewing windows are formed through imaging individual light sources and hence defines the relative positions of system elements and ray paths. Such an apparatus may be used to achieve an autostereoscopic display with a flat structure, not requiring fast response speed spatial light modulators. 1. A directional backlight comprising:a waveguide having an input end; andan array of light sources disposed at different input positions in a lateral direction across the input end of the waveguide,the waveguide further comprising first and second, opposed guide surfaces for guiding light along the waveguide, and a reflective end facing the input end for reflecting input light from the input sources back through the waveguide, the waveguide being arranged to direct input light from the light sources as output light through the first guide surface after reflection from the reflective end into optical windows in output directions distributed in a lateral direction to the normal to the first guide surface that are dependent on the input positions,a direction splitting optical element arranged to receive light from the first guide surface and direct said light into at least two separate optical windows.2. A directional backlight according to claim 1 , wherein the direction splitting optical element comprises first and second polarisers and the light from the first guide surface is ...

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Номер записи: 42
19-12-2013 дата публикации

LED LIGHT BAR AND SIDE-EDGE BACKLIGHT MODULE USING SAME

Номер: US20130336000A1
Автор: Huang Jianfa
Принадлежит: Shenzhen China Star Optoelectronics Technology Co. Ltd.

An LED light bar includes a PCB and a plurality of LED lamps mounted to and electrically connected with the PCB. Each of the LED lamps has a light emission face that is perpendicular to the PCB. The LED lamps at two opposite ends are arranged to have the light emission faces thereof angularly shifted in directions away from the light emission faces of the LED lamps in the middle to thereby increase light irradiation range of the LED light bar. With the LED lamps at two ends of the LED light bar being arranged to have light emission faces thereof angularly shifted so as to form a predetermined included angle between the light emission faces of the LED lamps and a light incidence face of the light guide plate, the irradiation range of light from the LED light bar is increased. 144. An LED light bar , comprising a PCB and a plurality of LED lamps mounted to and electrically connected with the PCB , each of the LED lamps having a light emission face that is perpendicular to the PCB , the LED lamps at two opposite ends being arranged to have the light emission faces thereof angularly shifted in directions away from the light emission faces of the LED lamps in the middle to thereby increase light irradiation range of the LED light bar.2. The LED light bar as claimed in claim 1 , wherein the plurality of LED lamps is sequentially lined up in such a way that the light emission faces thereof are located at the same side of the PCB.3. The LED light bar as claimed in claim 2 , wherein the LED lamps in the middle are arranged to have the light emission faces thereof arranged in a straight line.4. The LED light bar as claimed in claim 1 , wherein said LED lamps at the two opposite ends are multiple.5. The LED light bar as claimed in claim 1 , wherein the light emission faces of the LED lamps at each of the two ends have extent of angular shifting that is gradually increased from inside to outside.6. An LED light bar claim 1 , comprising a PCB and a plurality of LED lamps mounted ...

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Номер записи: 43
02-01-2014 дата публикации

Spread illuminating apparatus

Номер: US20140003092A1
Автор: Shohei Takada, Tomotaka HORIKAWA
Принадлежит: Minebea Co Ltd

A spread illuminating apparatus includes: a light guide plate having protrusions on side surfaces of the light guide plate, a housing frame having recesses in which the protrusions of the light guide plate are introduced, a reflecting sheet arranged on a bottom surface side opposing an emitting surface of the light guide plate, and a fixation device for fixing the reflecting sheet to a bottom surface of the housing frame. The recesses of the housing frame include a first recess which is formed to be opened at a bottom surface side and is at least partially covered by the fixation device, and each of the protrusions to be arranged at the first recess has an opposing surface that opposes the fixation device, and the opposing surface is provided with clearance relative to the fixation device.

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Номер записи: 44
09-01-2014 дата публикации

ILLUMINATION DEVICE, DISPLAY DEVICE, AND TELEVISION RECEPTION DEVICE

Номер: US20140009697A1
Автор: Kuromizu Yasumori
Принадлежит: SHARP KABUSHIKI KAISHA

An illumination device of the present invention is provided with: a housing member that has a bottom plate , a side wall , and a pair of protrusions ; a light guide plate having a pair of first end faces , a pair of second end faces that extend in a direction intersecting the first end faces , and a pair of recesses at the respective first end faces , the light guide plate being disposed in the housing member in a manner so that the rear surface thereof faces the bottom plate and the recesses respectively engage the protrusions ; a light source unit having light sources and being disposed in the housing member in a manner so that the light sources face at least the second end surfaces of the light guide plate ; and a frame having a frame-shaped covering plate covering the outer edges W of the plate surface of the light guide plate , and a pressing part that protrudes downwards from the covering plate in a manner so as to selectively press the peripheral portion S of the recess of the plate surface of the light guide plate 1. An illumination device , comprising:a housing member that has a bottom plate, side walls that rise from the bottom plate, and a pair of protrusions disposed on inner sides of the side walls, the pair of protrusions protruding from a plate surface of the bottom plate to face each other;a light guide plate that is a plate-shaped member having a pair of first end faces extending in one direction, and a pair of second end faces extending in a direction perpendicular to the first end faces, the light guide plate having, on the respective first end faces, a pair of recesses recessed inwardly from the respective end faces, the light guide plate being disposed inside the side walls such that a rear surface thereof faces the bottom plate and such that the respective protrusions engage the respective recesses;a light source unit having light sources and a light source substrate on which the light sources are mounted, the light source unit being disposed ...

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Номер записи: 45
09-01-2014 дата публикации

SIMULATED SUNLIGHT IRRADIATION APPARATUS

Номер: US20140009901A1
Автор: Minami Kohji
Принадлежит: SHARP KABUSHIKI KAISHA

A simulated sunlight irradiation apparatus () has transmittance adjustment members (and ) provided above an irradiation surface of a light guide plate () and in the vicinity of either incident face of the light guide plate () on which simulated sunlight is incident. The transmittance adjustment members (and ) adjust the transmittance of light in a portion of a wavelength band of simulated sunlight that is emitted from the irradiation surface of the light guide plate (), thus bringing about improvement in spectral coincidence of the simulated sunlight. This provides a simulated sunlight irradiation apparatus that can radiate simulated sunlight with high spectral coincidence. 1. A simulated sunlight irradiation apparatus comprising:a first light source which radiates a first ray of light;a second light source which radiates a second ray of light having a spectral distribution that is different from a spectral distribution of the first ray of light;a first optical filter which controls a transmittance of the first ray of light;a second optical filter which controls a transmittance of the second ray of light;a photoselection section which receives the first ray of light whose transmittance has been controlled by the first optical filter and the second ray of light whose transmittance has been controlled by the second optical filter, and which emits simulated sunlight by mixing together a ray of light selected from the first ray of light thus received and a ray of light selected from the second ray of light thus received;a light guide plate which receives the simulated sunlight emitted from the photoselection section;a light extraction section which takes out, to an irradiation surface of the light guide plate, the simulated sunlight received by the light guide plate; anda transmittance adjustment member which is located closer to the irradiation surface of the light guide plate than the light extraction section is, and which adjusts a transmittance of light in a portion ...

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Номер записи: 46
09-01-2014 дата публикации

Light guide plate and planar lighting device

Номер: US20140009966A1
Автор: Osamu Iwasaki
Принадлежит: Fujifilm Corp

The light guide plate has a first light incidence surface and a second light incidence surface which are provided on end sides of a light exit surface and are orthogonal to each other. The light guide plate includes two or more layers superposed on each other in a direction substantially perpendicular to the light exit surface and containing scattering particles at different particle concentrations. The thicknesses of the two or more layers in the direction substantially perpendicular to the light exit surface change so that a combined particle concentration of the light guide plate has, in directions perpendicular to the light incidence surfaces, a first local maximum value located on sides closer to the light incidence surfaces and a second local maximum value located at positions farther from the light incidence surfaces than positions of the first local maximum value and being larger than the first local maximum value.

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Номер записи: 47
16-01-2014 дата публикации

ELECTRONIC APPARATUS

Номер: US20140016346A1
Автор: Hsiao Chun-Chung, Hsu Chun-Chi
Принадлежит: YOUNG LIGHTING TECHNOLOGY INC.

An electronic apparatus including a back cover, a frame body, a transparent plate, and a display unit is provided. The frame body is disposed on the back cover and has a first supporting surface and a second supporting surface. The transparent plate is supported on the first supporting surface. The display unit is supported on the second supporting surface and adhered to the transparent plate, and the display unit is held between the second supporting surface and the transparent plate. 1. An electronic apparatus , comprising:a back cover;a frame body, disposed on the back cover and having a first supporting surface and a second supporting surface;a transparent plate, supported on the first supporting surface; anda display unit, supported on the second supporting surface and adhered to the transparent plate, wherein the display unit is held between the second supporting surface and the transparent plate.2. The electronic apparatus as claimed in claim 1 , wherein the frame body comprises:a main body, including an opening, wherein the first supporting surface is located on the main body, and the display unit is located in the opening; anda first supporting portion, connected to the main body and located in the opening, wherein the second supporting surface is located on the first supporting portion.3. The electronic apparatus as claimed in claim 2 , wherein the first supporting portion extends along an inner edge of the opening claim 2 , and is a surrounding structure.4. The electronic apparatus as claimed in claim 2 , wherein the first supporting portion includes a plurality of sections separated from each other claim 2 , wherein each section is connected to the inner edge of the opening.5. The electronic apparatus as claimed in claim 1 , wherein the frame body is integrally formed.6. The electronic apparatus as claimed in claim 2 , wherein the frame body is integrally formed and the main body and the first supporting portion fomi a stair structure.7. The electronic ...

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Номер записи: 48
16-01-2014 дата публикации

SURFACE ILLUMINATION DEVICE

Номер: US20140016347A1
Автор: Okada Kazuyuki, Okuda Mitsuru, Osumi Yoshimasa
Принадлежит: Omron Corporation

A surface illumination device has a light source, and a light guide plate having a light-emitting surface. The light guide plate guides light from the light source such that the light is emitted from a display region of the light-emitting surface. A plurality of deflection patterns having deflection inclined surfaces are formed in the display region in at least one of the light-emitting surface of the light guide plate and an opposite surface to the light-emitting surface. A light control structure that reduces light is provided on at least part of at least one of the light-emitting surface of the light guide plate and a surface except the opposite surface to the light-emitting surface, the light being reflected toward the display region by the surface. 1. A surface illumination device comprising:a light source; anda light guide plate having a light-emitting surface,wherein the light guide plate light from the light source such that the light is emitted from a display region of the light-emitting surface,wherein a plurality of deflection patterns having deflection inclined surfaces are formed in the display region in at least one of the light-emitting surface of the light guide plate and an opposite surface to the light-emitting surface, andwherein a light control structure that reduces light is provided on at least part of at least one of the light-emitting surface of the light guide plate and a surface except the opposite surface to the light-emitting surface, the light being reflected toward the display region by the surface.2. The surface illumination device according to claim 1 , wherein the light control structure is a notch unit in which an angle is fixed such that the light incident to the light control structure is transmitted toward an outside of the light guide plate.3. The surface illumination device according to claim 1 , wherein the light control structure is a light-absorbing layer that absorbs the light incident to the light control structure.4. The ...

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Номер записи: 49
16-01-2014 дата публикации

Backlight module

Номер: US20140016354A1
Автор: Choongho Lee, Hsin Chin Lee, Michael Lorne Purdy
Принадлежит: Research in Motion Ltd

A backlight module for illuminating a display is described. The backlight module may be provided in an electronic device along with a light source for illuminating an LCD display. The backlight module includes a diffuser, a light guide having a top surface and a bottom surface, a reflector, and a prism structure positioned between the light guide bottom surface and the reflector. The prism structure has a plurality of prisms extending towards the light guide. The prism structure may include a film or a top portion of the reflector having a plurality of prisms extending towards the light guide.

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Номер записи: 50
23-01-2014 дата публикации

OPTICAL MEMBER AND DISPLAY DEVICE INCLUDING THE SAME

Номер: US20140022819A1
Автор: Lee Sun Hwa, Oh Jeong Taek
Принадлежит: LG INNOTEK CO., LTD.

Disclosed are an optical member and a display device including the same. The optical member includes a wavelength conversion layer to convert a wavelength of an incident light; a first anti-reflective layer on a first surface of the wavelength conversion layer; and a second anti-reflective layer under a second surface of the wavelength conversion layer opposite to the first surface. 1. An optical member comprising:a wavelength conversion layer to convert a wavelength of an incident light;a first anti-reflective layer on a first surface of the wavelength conversion layer; anda second anti-reflective layer under a second surface of the wavelength conversion layer opposite to the first surface,wherein the first and second anti-reflective layers seal the wavelength conversion layer.2. The optical member of claim 1 , wherein the wavelength conversion layer includes a matrix and a plurality of wavelength conversion particles distributed in the matrix.3. The optical member of claim 2 , wherein the first and second anti-reflective layers have a refractive index lower than a refractive index of the matrix.4. The optical member of claim 3 , further comprising a first substrate and a second substrate claim 3 , wherein the wavelength conversion layer is sandwiched between the first and second substrates claim 3 , the first anti-reflective layer is coated on the first substrate claim 3 , and the second anti-reflective layer is coated on the second substrate.5. The optical member of claim 4 , wherein the refractive index of the first anti-reflective layer is lower than a refractive index of the first substrate claim 4 , and the refractive index of the second anti-reflective layer is lower than a refractive index of the second substrate.6. The optical member of claim 1 , further comprising a third anti-reflective layer on the first anti-reflective layer claim 1 , wherein a refractive index of the third anti-reflective layer is lower than a refractive index of the first anti- ...

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Номер записи: 51
30-01-2014 дата публикации

BACKLIGHT UNIT AND DISPLAY DEVICE

Номер: US20140028955A1
Автор: Hirayama Yoshinobu, Tanaka Shigenori, Yanagi Toshihiro
Принадлежит: SHARP KABUSHIKI KAISHA

Provided are (i) at least two light sources (A and B), (ii) a light guide plate () having a light exit surface (SUF), and (iii) an optical path changing member () which directly receives light emitted from the light exit surface (SUF) and which has a light exit surface (SUF) from which the light is directly emitted to a liquid crystal panel (). The light emitted from the light exit surface (SUF) has a luminance directivity in which luminance distribution is maximum in at least two directions other than a direction normal to a display screen of the liquid crystal panel (). 1. A backlight unit , comprising:at least two light sources which are provided so as to face each other;a light guide member having a first light exit surface, the light guide member (i) receiving light emitted by the at least two light sources and (ii) emitting the light from the first light exit surface; andan optical path changing member (i) directly receiving the light emitted from the first light exit surface and (ii) having a second light exit surface from which the light is emitted directly to a display panel that is externally provided, the optical path changing member for changing an optical path of the light passing through the optical path changing member,the light emitted from the second light exit surface having a luminance directivity in which luminance distribution is maximum in at least two directions other than a direction normal to a display screen of the display panel.2. The backlight unit as set forth in claim 1 , wherein the optical path changing member has an optical property in which a second light exit angle is smaller than a first light exit angle claim 1 , where (i) the first light exit angle is an angle from a facing direction in which the at least two light sources face each other and an angle at which the light is emitted from the first light exit surface claim 1 , and (ii) the second light exit angle is an angle from the facing direction and an angle at which the light ...

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Номер записи: 52
30-01-2014 дата публикации

Lighting system and display device

Номер: US20140029300A1
Автор: Ryuzo Yuki, Takeshi Ishida
Принадлежит: Sharp Corp

A plurality of prisms 23 e which make an input angle of light from an LED 21 with respect to a rear surface of a light guiding body 23 gradually small are provided on a light emission plane 23 b of the light guiding body 23 , and a plurality of prisms 24 b which cause the light from the LED 21 to be totally reflected to front in an interface between a rear surface of a low refractive index layer 24 and an air layer are provided on the rear surface of the light guiding plate 22 . The light guiding plate 22 further includes an inclined plane 30 which is inclined to an optical axis O of the light from the LED 21 . The inclined plane 30 is configured so as to cause input light to be reflected in the direction which is close to the optical axis O.

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Номер записи: 53
27-02-2014 дата публикации

Backlight unit and display device

Номер: US20140056027A1
Автор: Ruoyu MA
Принадлежит: BOE Technology Group Co Ltd

Embodiments of the invention disclose a backlight unit, comprising: a light guide plate, a light source member, a reflection film, wherein: the light guide plate (LGP) comprises a light incident side, a light emission side and a bottom side opposite to the light emission side, the light guide plate is for emitting light entered from the light incident side through the light emission side; the light source member is disposed on the light incident side of the LGP and light emitted by the light source member enters the LGP through the light incident side of the LGP; the reflection film is at least disposed on the bottom side of the LGP and is for reflecting light back into the LGP; wherein a reflection structure is disposed on the bottom side of the LGP and a microstructure is disposed on the light emission side of the LGP.

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Номер записи: 54
06-03-2014 дата публикации

Light-emitting device and image display apparatus

Номер: US20140063842A1
Автор: Shingo Ohkawa
Принадлежит: Sony Corp

A light-emitting device includes: a light guiding member; a plurality of light-emitting elements; and a reflection member. A light reflection/exit surface of the light guiding member has a concave-convex pattern including a plurality of convex portions reflecting light emitted from the light-emitting elements inward. On the assumption that L is a distance between the light-emitting elements, t is a thickness of the light guiding member, an incident angle φ of the light on the light reflection/exit surface is an angle between a line segment obtained by projecting a light path from the light-emitting element to the light reflection/exit surface and a line segment extending from a central point of the light-emitting element to the light reflection/exit surface, and θ is a maximum angle range of reflected light, a value of the angle range θ decreases as a value of the incident angle φ increases in a range of 0<φ<tan−1 (L/t).

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Номер записи: 55
27-03-2014 дата публикации

BACKLIGHT AND LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20140085570A1
Автор: Kojima Kuniko, Kuwata Muneharu, Nakano Nami, Nishitani Rena
Принадлежит: Mitsubishi Electric Corporation

An objective is to obtain a backlight in which a decrease in brightness at a peripheral portion associated with the change of viewing distance is reduced. The backlight is comprised with an optical member for transforming beams projected from light sources A and B into beams having a narrow-angle light distribution in which rays having intensity of no less than a predetermined value are localized within a predetermined angle range centered in the normal direction of a display surface of a liquid crystal display panel , and for projecting the transformed beams in the direction of the liquid crystal display panel ; and a light distribution control member for receiving the beams that are projected from the optical member and that have the narrow-angle light distribution, and for projecting the received beams in the direction of the liquid crystal display panel , wherein a plurality of concaves are provided at the light distribution control member for transforming a beam, from among the beams having the narrow-angle light distribution, that enters a peripheral portion of the liquid crystal display panel so that the narrow-angle light distribution of the entered beam is broadened compared to that of a beam that enters a central portion of the liquid crystal display panel ; and curvature radiuses of the plurality of concaves are formed so that a curvature radius of a concave located at a peripheral portion of the light distribution control member is smaller than a curvature radius of a concave located at a central portion of the light distribution control member 1. A backlight comprising:a light source;an optical member for transforming beams projected from the light source into beams having a narrow-angle light distribution in which rays having intensity of no less than a predetermined value are localized within a predetermined angle range centered in the normal direction of a display surface of a liquid crystal display panel, and for projecting the transformed beams in ...

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Номер записи: 56
03-04-2014 дата публикации

DISPLAY MODULE AND HANDHELD ELECTRONIC DEVICE

Номер: US20140092625A1
Автор: Chang Yuan-Hung, Hu Chih-Jen, LIN MING-TIEN, Shih Chin-Chung, Yeh Chih-Shan
Принадлежит: HTC CORPORATION

A display module is provided. The display module includes a frame, a light guide plate, a light source device, a display panel and an optical film. The light guide plate is accommodated within the frame. The light guide plate has a recess. The light source device is disposed between the frame and the light guide plate. The display panel is disposed on the recess and attached to the light guide plate to seal the recess. The optical film is located within the recess. A handheld electronic device having said display module is also provided. 1. A display module , comprising:a frame;a light guide plate accommodated within the frame, the light guide plate has a recess;a light source device disposed between the frame and the light guide plate;a display panel disposed on the recess and attached to the light guide plate to seal the recess; andan optical film located within the recess.2. The display module of claim 1 , further comprising:a waterproof adhesive-material surrounding the recess, wherein the display panel is attached to the light guide plate through the waterproof adhesive-material.3. The display module of claim 1 , wherein the light guide plate has a flat portion claim 1 , a light incident portion and a plurality of sidewall portions claim 1 , the light incident portion and the sidewall portions stand on an edge of the flat portion to collectively form the recess claim 1 , and the light source device faces towards the light incident portion of the light guide plate.4. The display module of claim 3 , wherein a material of the sidewall portion comprises non-transparent materials.5. The display module of claim 3 , wherein the light incident portion has an inclined surface claim 3 , the inclined surface connects to a top surface of the flat portion.6. The display module of claim 3 , further comprising:a reflector disposed at a bottom portion of the flat portion.7. The display module of claim 1 , wherein the light source device is disposed at a bottom surface of the ...

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Номер записи: 57
06-01-2022 дата публикации

Light-emitting module

Номер: US20220003915A1
Автор: Daisuke Kasai, Takao NAKAUCHI, Takuya Nakabayashi
Принадлежит: Nichia Corp

A light-emitting module includes: a plurality of light sources; and a lightguide plate including a plurality of light source placement sections, in each of which at least one light source is arranged, arrayed in a first direction and a second direction orthogonal to the first direction. The lightguide plate defines at least one first-A light control groove and at least one first-B light control groove that extend parallel to the second direction between a first light source placement section and a second light source placement section adjacent to the first light source placement section in the first direction, and at least one second-A light control groove and at least one second-B light control groove that extend parallel to the first direction between the first light source placement section and a third light source placement section adjacent to the first light source placement section in the second direction.

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Номер записи: 58
01-01-2015 дата публикации

Light guide plate and illumination apparatus

Номер: US20150003105A1
Автор: Hiroshi Sekiguchi, Masahiro Goto
Принадлежит: DAI NIPPON PRINTING CO LTD

A light guide plate ( 30 ) includes an extracting light guide layer ( 40 ) having a pair of main surfaces ( 41 a, 41 b ). The extracting light guide layer ( 40 ) includes a base portion ( 45 ) having a pair of main surfaces ( 46 a, 46 b ), and a plurality of light diffusing portions ( 50 ) provided in the base portion. The light guide plate ( 30 ) can obscure extracting elements for extracting light.

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Номер записи: 59
01-01-2015 дата публикации

Lighting Devices With Patterned Printing of Diffractive Extraction Features

Номер: US20150003106A1
Автор: Jones Vivian W., Stay Matthew S., Thompson David S., Yang Zhaohui
Принадлежит:

Extended area lighting devices include a light guide and diffractive surface features on a major surface of the light guide, at least some diffractive surface features adapted to couple guided-mode light out of the light guide. The diffractive features include first and second diffractive features disposed on respective first and second portions of the major surface. A patterned light transmissive layer, including a second light transmissive medium, optically contacts the second diffractive features but not the first diffractive features. A first light transmissive medium optically contacts the first but not the second diffractive features. The first and second portions may define indicia, and the first and second diffractive features provide low distortion for viewing objects through the light guide such that the indicia is not readily apparent to users when guided-mode light does not propagate within the light guide. Optical films having such diffractive features are also disclosed. 1. A lighting device , comprising:a light guide having a first major surface, the first major surface having first and second diffractive surface features formed in first and second portions thereof respectively, at least one of the first and second diffractive surface features adapted to couple guided-mode light out of the light guide; anda patterned light transmissive layer in optical contact with the second diffractive surface features but not the first diffractive surface features, the patterned layer comprising a second light transmissive medium;a first light transmissive medium in optical contact with the first diffractive surface features but not the second diffractive surface features;wherein the first and second light transmissive media have different first and second refractive indices respectively at a visible wavelength; andwherein the light guide is non-flat.2. The device of claim 1 , wherein the light guide is simply curved.3. The device of claim 1 , wherein the light ...

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Номер записи: 60
07-01-2016 дата публикации

ASSYMETRIC INPUT LIGHTGUIDE

Номер: US20160003997A1
Автор: OUDERKIRK Andrew J.
Принадлежит:

The disclosure generally relates to illumination converters that are capable of converting light from one geometrical format to another. In particular, the described illumination converters are capable of converting one or more circular sources aligned adjacent each other, such as LED source(s) arranged in a line, to a linear source useful in an edgelit waveguide, which can be used in a backlight for a display. 1. An illumination converter , comprising: a central plane having a width, about which the visible-light transparent film is wound;', 'a light input surface perpendicular to the central plane, the light input surface comprising a first edge of the visible-light transparent film;', 'a reflective surface comprising a second edge of the visible-light transparent film disposed at a 45 degree angle to the first edge of the visible-light transparent film;', 'a light output region parallel to the central plane; and, 'a spiral-wound portion of a visible-light transparent film havinga planar portion of the visible-light transparent film extending tangentially from the spiral-wound portion of the visible-light transparent film to a light output edge of the visible-light transparent film.2. The illumination converter of claim 1 , wherein the visible-light transparent film is selected from a polymeric film claim 1 , a glass film claim 1 , and a combination thereof.3. The illumination converter of claim 1 , wherein the light output edge of the visible-light transparent film is parallel to the central plane.4. The illumination converter of claim 1 , wherein the spiral-wound portion further comprises a gap between adjacent layers of the spiral-wound portion such that total internal reflection (TIR) can occur within the visible-light transparent film.5. The illumination converter of claim 4 , wherein the gap comprises air or a material having a lower index of refraction than the visible-light transparent film.6. The illumination converter of claim 1 , wherein the reflective ...

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Номер записи: 61
07-01-2016 дата публикации

Backlight unit and display device

Номер: US20160003999A1
Автор: JING Yuan, Woong Kim, Yanjun SUN, Zhanchang Bu
Принадлежит: Beijing BOE Display Technology Co Ltd, BOE Technology Group Co Ltd

A backlight unit ( 10 ) and a display device are provided. The backlight unit ( 10 ) comprises a light guide plate ( 101 ), and a light source ( 102 ), a first reflective film ( 101 ), and a second reflective film ( 104 ). The light source ( 102 ) includes a plurality of LEDs ( 1021 ) uniformly arranged. The first reflective film ( 103 ) is disposed correspondingly on a backlight side of a region opposite to each of the LEDs on the light guide plate ( 101 ); The second reflective film ( 104 ) includes at least one first sub-reflective film ( 1041 ), the first sub-reflective film ( 1041 ) being disposed correspondingly on a backlight side of a region opposite to a gap between two adjacent LEDs on the light guide plate ( 101 ). A reflectivity of the first reflective film is less than a reflectivity of the second reflective film, and a distance between the light guide plate ( 101 ) and the LEDs is less than a distance between an intersection of light beams emitted by two adjacent LEDs and the LEDs, and, a width of the frame of the display device can be reduced.

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Номер записи: 62
07-01-2016 дата публикации

Snap-Fit for Fixing Optical Film, and Backlight Module and Liquid Crystal Display With the Same

Номер: US20160004007A1
Автор: Chen Shihhsiang, Li Dehua, Yu Gang
Принадлежит:

A snap-fit for fixing optical films is disclosed. The optical film includes at least one ear hook arranged above a border of a plastic frame. The plastic frame is assembled with a back frame so as to fix a light guiding plate within the back frame. The snap-fit includes a press portion and a connection portion extending from a first side of the press portion. The connection portion and the press portion cooperatively form an angle with a predetermined degree. The press portion presses the ear hook of the optical films on the border of the plastic frame. The connection portion clasps with the hook of the sidewall. By adopting the snap-fit, not only the narrow bezel design can be achieved, but also the optical film can be stably fixed. A backlight module with the above snap-fit and the liquid crystal display are also disclosed. 1. A snap-fit for fixing optical films , each of the optical films comprises at least one ear hook arranged above a border of a plastic frame , the plastic frame is assembled with a back frame so as to fix a light guiding plate within the back frame , the snap-fit comprising:a press portion and a connection portion extending from a first side of the press portion, the connection portion and the press portion cooperatively form an angle with a predetermined degree, the press portion presses the ear hook of the optical films on the border of the plastic frame, and the connection portion clasps with the hook of a sidewall of the back frame.2. The snap-fit as claimed in claim 1 , wherein the predetermined degree of the angle is of a range between 80 and 90 degrees.3. The snap-fit as claimed in claim 1 , wherein the border of the plastic frame comprises a positioning pillar claim 1 , the ear hook comprises a positioning hole claim 1 , a second side of the press portion comprises a semicircle through hole claim 1 , the connection portion comprises a connecting through hole claim 1 , the positioning hole and the semicircle through hole engages with ...

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Номер записи: 63
04-01-2018 дата публикации

LIGHT-GUIDING PANEL, BACKLIGHT MODULE, AND DISPLAY DEVICE

Номер: US20180003883A1
Автор: Zhu Lin
Принадлежит:

Light-guiding panel, backlight module, and a display device are provided. An exemplary light-guiding panel includes a light-guiding body and a light diffusing-transmitting layer over the light-guiding body. The light-guiding body is configured to reflect incident light beams on a first side surface of the light-guiding body, thereby providing reflected light beams to the light diffusing-transmitting layer. The light diffusing-transmitting layer is capable of diffusing and transmitting the reflected light beams. 120-. (canceled)21. A light-guiding panel , comprising:a light-guiding body; and the light-guiding body is configured to reflect incident light beams on a first side surface of the light-guiding body, thereby providing reflected light beams to the light diffusing-transmitting layer, and', 'the light diffusing-transmitting layer is capable of diffusing and transmitting the reflected light beams., 'a light diffusing-transmitting layer over the light-guiding body, wherein22. The light-guiding panel according to claim 21 , wherein:the incident light beams on the light-guiding body are substantially parallel;the reflected light beams from the light-guiding body are substantially parallel; andthe light diffusing-transmitting layer comprises:a plurality of diffuser stripes, configured to scatter a portion of the reflected substantially parallel light beams to form non-collimated light beams, anda spacing between adjacent diffuser stripes, configured to transmit a portion of the reflected substantially parallel light beams to form collimated light beams.23. The light-guiding panel according to claim 22 , wherein:the diffuser stripe has one of a straight shape and a zigzag shape.24. The light-guiding panel according to claim 22 , wherein:a light-emitting surface of the light-guiding body includes a reflective structure,the reflective structure includes a plurality of protruding stripes arranged in parallel along an incident direction of the incident light beams, ...

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Номер записи: 64
04-01-2018 дата публикации

ELECTRODELESS ORGANIC LIGHT-EMITTING DEVICE AND LCD SYSTEMS USING SAME

Номер: US20180004044A1
Автор: Nolan Daniel Aloysius, Quesada Mark Alejandro, Senaratne Wageesha
Принадлежит:

An electrodeless organic light-emitting device () and LCD systems using same are disclosed. The electrodeless organic light-emitting device () includes an organic light-emitting structure () with at least one organic light-emitting layer (), and an illuminator () operably disposed to illuminate the organic light-emitting structure () with redirected light (D). The redirected light (D) causes the one or more organic light-emitting layers () to emit light (), which constitutes the illumination from the organic light-emitting device (). An LCD system includes the electrodeless organic light-emitting device () operably arranged relative to an LCD panel to receive the illumination (). The organic light-emitting layer () can be segmented, with each segment emitting a primary color of light. The organic light-emitting layer segments are aligned with the cells of the LCD panel to define pixels for forming a display image. The LCD system can be configured to have a non-black background color when in the “off” state. Methods of forming illumination and display light are also disclosed. 1. A luminaire apparatus that emits illumination , comprising:an illuminator having at least one light source that generates first light having a first wavelength, the light source being operably coupled to a light-redirecting member, which receives the first light and forms therefrom redirected light;an organic light-emitting device (OLED) structure operably arranged adjacent the light-redirecting member, the OLED structure having at least one organic layer that emits light when irradiated by the redirected light, wherein the OLED structure does not include any conductive electrodes; andoptionally, a sealing structure operably disposed around at least the at least one organic layer;wherein the emitted light from the OLED structure constitutes the illumination.2. The luminaire apparatus according to claim 1 , wherein the light-redirecting member includes a planar sheet that is substantially ...

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Номер записи: 65
07-01-2021 дата публикации

LIGHT-GUIDING PLATE, AND HOLOGRAM RECORDING DEVICE AND HOLOGRAM RECORDING METHOD USED FOR THE SAME

Номер: US20210003763A1
Автор: SASAKI Mayumi, UTSUGI Takeru
Принадлежит:

A hologram recording device for producing a hologram that diffracts incident light includes: a laser light source; a first half-wave plate that controls a polarization direction of a light beam emitted from the laser light source; a polarizing beam splitter that reflects S-polarized light to emit the S-polarized light as an “A” light ray and transmits P-polarized light to emit the P-polarized light as a “B” light ray with respect to the light beam passing through the first half-wave plate, and splits the light beam in two directions; a first wedge prism mirror that reflects the “A” light ray; a second half-wave plate that polarizes the “B” light ray into S-polarized light; a second wedge prism mirror that reflects the S-polarized light polarized by the second half-wave plate; and a recording medium irradiated with light rays reflected by the first wedge prism mirror and the second wedge prism mirror. 1. A light-guiding plate having a light diffractive portion that diffracts incident light by multiple-recorded hologram ,wherein the light diffractive portion has at least two or more regions and diffracts a different wavelength depending on each region when a certain light ray is incident, and power densities of light output diffracted for the different wavelengths are the same.2. The light-guiding plate according to claim 1 , wherein the light diffractive portion is used as an outgoing coupler that converts light propagating inside the light-guiding plate to light emitted outside the light-guiding plate.3. A hologram recording device for producing a hologram that diffracts incident light claim 1 , comprising:a laser light source;a first half-wave plate that controls a polarization direction of a light beam emitted from the laser light source;a polarizing beam splitter that reflects S-polarized light to emit the S-polarized light as an “A” light ray and transmits P-polarized light to emit the P-polarized light as a “B” light ray with respect to the light beam passing ...

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Номер записи: 66
07-01-2021 дата публикации

DISPLAY DEVICE AND DISPLAY CONTROL METHOD

Номер: US20210003764A1
Автор: Shiu Ming-Huei, Tsang Chih-Jen
Принадлежит: CORETRONIC CORPORATION

The present disclosure provides a display device, which includes an invisible light source module, a wavelength conversion pattern and a display panel. The invisible light source module is configured to provide an invisible light beam. The wavelength conversion pattern is located on a transmission path of the invisible light beam. The wavelength conversion pattern is formed by a wavelength conversion material, the wavelength conversion material is configured to convert invisible light into visible light, and the invisible light beam forms a visible light pattern through the wavelength conversion pattern. The present disclosure also discloses a display control method for controlling a display device. The display device and the display control method of the present disclosure have multiple display modes and may display a preset pattern in a display mode driven by a low-power power supply. 1. A display device , comprising an invisible light source module , a wavelength conversion pattern and a display panel , wherein the first anti-invisible light penetrative layer is located on the light guide plate, and', 'the invisible light source is configured to provide an invisible light beam and located beside the light guide plate;, 'the invisible light source module comprises a light guide plate, a first anti-invisible light penetrative layer and an invisible light source,'}the wavelength conversion pattern is located on a transmission path of the invisible light beam, the wavelength conversion pattern is formed by a wavelength conversion material, the wavelength conversion material is configured to convert invisible light into visible light, the invisible light beam is incident to the wavelength conversion pattern via the light guide plate, and the invisible light beam forms a visible light pattern through the wavelength conversion pattern; andthe light guide plate is located between the display panel and the first anti-invisible light penetrative layer.2. The display device ...

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Номер записи: 67
04-01-2018 дата публикации

OPTICAL SENSING UNIT AND TOUCH PANEL DEVICE INCLUDING THE SAME

Номер: US20180004356A1
Автор: Sugiyama Koichi, YOSHIOKA Nobuyuki
Принадлежит:

Provided is an optical sensing member, comprising a light guide plate which propagates light from a light source unit , detecting units which detect scattered light from the light guide plate being touched, an optical member which guides the scattered light to the detecting units, and a primary control unit which computes the touch location upon the light guide plate on the basis of information relating to the detected light. The optical member has arc-shaped curved surfaces formed on the end parts which face each of the detecting units. Each of the detecting units outputs, as the information relating to the light which is detected by the detecting units, location information corresponding to the angle of entry to the detecting units of the light which is radiated from the facing arc-shaped curved surfaces. It is thus possible to clarify contours of the light which is detected by the detecting units, and to improve the precision of the detection of the touch location. 116-. (canceled)17: An optical sensing unit comprising:a detecting member for detecting light; anda flat optical member for guiding to the detecting member scattered light or incoming light, the scattered light occurring from light transmitted inside a flat light guide unit, and the scattered light starting being transmitted inside the light guide unit and propagating through the light guide unit when a first input object touches a surface of the light guide unit where the light is transmitted therein; and the incoming light occurring when a second input object touches the surface of the light guide unit and emits light, and coming into the light guide unit, whereinthe optical member has an arc-shaped curved surface in a section and the arc-shaped curved surface faces the detecting member,the detecting member outputs, as information relating to the light which is detected by the detecting member, location information of the first or second input object corresponding to an incident angle on the ...

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Номер записи: 68
03-01-2019 дата публикации

OPTICAL FILM ASSEMBLY, BACKLIGHT MODULE AND DISPLAY DEVICE

Номер: US20190004231A1
Автор: CHANG CHIEN Sheng-Jer, CHANG Jianyu, HAI Bo, Hsiao Yu-Chun, LEE Yung-jui, SU Zanjia
Принадлежит: Shenzhen China Star Optoelectronics Technology Co. Ltd.

The invention provides an optical film assembly, a backlight module, and a display device. The backlight module includes a light source emitting at least a first light, a first optical film, and a second optical film laminated to the first optical film, wherein the first optical film includes a base film and a functional layer stacking up to the base film, the functional layer is a diffusion film, a brightness enhancement film, a reflection film, or a prism film, the second optical film is a light conversion layer, the light conversion layer receives the first light and converts the first light to a second light to emit, such that a light emission angle of the backlight module matches a requirement of wide viewing angle. The invention could broaden the light emitting angle of the backlight module to make the display device with the backlight module achieve wide viewing angle. 1. An optical film assembly , comprising:a first optical film; anda second optical film, laminated to the first optical film;wherein the first optical film comprises a functional layer and the second optical film is a light conversion layer, the light conversion layer receives a first light and converts the first light to at least a second light to emit, the light conversion layer comprises a quantum dot material and/or a phosphor material, and a concentration of the quantum dot material and/or the phosphor material in the light conversion layer ranges from 0.2% to 25% and a film thickness of the quantum dot material and/or the phosphor material ranges from 70 μm to 135 μm.2. The optical film assembly of claim 1 , wherein the functional layer is a diffusion film claim 1 , a brightness enhancement film claim 1 , a reflection film claim 1 , or a prism film.3. The optical film assembly of claim 1 , wherein a ratio of the quantum dot material to the phosphor material ranges from 1:100 to 1:5.4. A backlight module claim 1 , comprising:a light source, emitting at least a first light;a first optical ...

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Номер записи: 69
03-01-2019 дата публикации

OPTICAL FILM ASSEMBLY, BACKLIGHT MODULE AND DISPLAY DEVICE

Номер: US20190004232A1
Автор: CHANG CHIEN Sheng-Jer, CHANG Jianyu, HAI Bo, Hsiao Yu-Chun, LEE Yung-jui, SU Zanjia
Принадлежит: Shenzhen China Star Optoelectronics Technology Co. Ltd.

The invention provides an optical film assembly, a backlight module, and a display device. The backlight module includes a light source emitting at least a first light, a first optical film, and a second optical film laminated to the first optical film, wherein the first optical film includes a functional layer but does not include a base film, the functional layer is a diffusion film, a brightness enhancement film, a reflection film, or a prism film, and the second optical film is a light conversion layer, the light conversion layer receives the first light and converts the first light to at least a second light to emit, such that a light emission angle of the backlight module matches a requirement of wide viewing angle. The invention could broaden the light emitting angle of the backlight module to make the display device with the backlight module achieve wide viewing angle. 1. An optical film assembly , comprising:a first optical film; anda second optical film, laminated to the first optical film;wherein the first optical film comprises a functional layer but does not comprise a base film, and the second optical film is a light conversion layer, the light conversion layer receives a first light and converts the first light to at least a second light to emit, the light conversion layer comprises a quantum dot material and/or a phosphor material, and a concentration of the quantum dot material and/or the phosphor material in the light conversion layer ranges from 0.2% to 25% and a film thickness of the quantum dot material and/or the phosphor material ranges from 70 μm to 135 μm.2. The optical film assembly of claim 1 , wherein the functional layer is a diffusion film claim 1 , a brightness enhancement film claim 1 , a reflection film claim 1 , or a prism film.3. The optical film assembly of claim 1 , wherein a ratio of the quantum dot material to the phosphor material ranges from 1:100 to 1:5.4. A backlight module claim 1 , comprising:a light source, emitting at ...

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Номер записи: 70
03-01-2019 дата публикации

Optical module and illumination apparatus

Номер: US20190004238A1
Автор: Kuo-Hui Chang, Ming-Hung Chien, Po-Chang Li, Yao-Chi Peng
Принадлежит: Lite On Technology Corp

An optical module including a light guide plate and at least one secondary optical element is provided. The light guide plate has a first surface, a second surface opposite to the first surface, and a third surface connected between the first surface and the second surface. The at least one secondary optical element is disposed with the light guide plate and has a light entering surface and a light exit surface, wherein the light entering surface is connected to the first surface and forms a containing recess, and the light exit surface is connected to the second surface and protrudes from the second surface of the light guide plate. Besides, an illumination apparatus is also provided.

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Номер записи: 71
03-01-2019 дата публикации

Backlight module and mobile terminal

Номер: US20190004239A1
Автор: Qing Guo, YAN Cheng
Принадлежит: Wuhan China Star Optoelectronics Technology Co Ltd

The present disclosure discloses a backlight module including a light guide plate, an optical diaphragm group disposed on a light exiting surface of the light guide plate, and a backlight source disposed at a light incident end of the light guide plate, a middle frame, a radiating fin and a heat conducting connector. The middle frame is disposed on an outer surface of the backlight module and includes a bottom plate and a side wall. The radiating fin is attached to an internal surface of the bottom plate of the middle frame, and the heat conducting connector includes a first portion that contacts the backlight source and a second portion that only contacts a partial region of the radiating fin. The present disclosure also discloses a mobile terminal.

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Номер записи: 72
03-01-2019 дата публикации

BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20190004241A1
Автор: ZHANG Bingchuan
Принадлежит:

A backlight module and a liquid crystal display device are provided. An outer wall located on the light incident side of the plastic frame is arc-shaped, so a graphite sheet attached to a flexible printed circuit board can be attached to a backside of a reflector plate along the arc-shaped outer wall, thereby increasing the size of the graphite and enhancing heat dissipation efficiency of the backlight module. 1. A backlight module , comprising: a light guide plate , a reflector plate , a plastic frame , a flexible printed circuit board , a light source , a graphite sheet , a frame shaped adhesive , and a film ,wherein the light guide plate comprises a light incident side, a light reflection side, and a light output side, and the light incident side is perpendicular to the light output side;the reflector plate is disposed on the light reflection side of the light guide plate, and the reflector plate comprises a reflecting surface and a backside;the light source is disposed on the light incident side of the light guide plate;the flexible printed circuit board is disposed over the light output side of the light guide plate, and the light source is connected to the flexible printed circuit board;the plastic frame is disposed on the light incident side of the light guide plate, an outer wall located on the light incident side of the plastic frame is arc-shaped;the graphite sheet is adhered on a side opposite to the light source of the flexible printed circuit board, and the graphite sheet is bent and adheres on the plastic frame along the arc-shaped outer wall of the plastic frame, and the graphite sheet further extends and adheres on the backside of the reflector plate;the frame shaped adhesive is disposed on the graphite sheet, and the frame shaped adhesive is provided with an exhaust hole; andthe film is disposed on the light output side of the light guide plate for converging emitted light from the light guide plate.2. The backlight module as claimed in claim 1 , ...

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Номер записи: 73
03-01-2019 дата публикации

LIQUID CRYSTAL DISPLAY, BACKLIGHT MODULE AND METHOD FOR ASSEMBLING THE SAME

Номер: US20190004244A1
Автор: Chen Qian
Принадлежит:

The present application provides a liquid crystal display, a backlight module and a methods for assembling the same. The backlight module includes a back plate, a light guide plate, an optical film group and a light source. The back plate includes a bottom plate, and the light guide plate and the optical film group are sequentially disposed on the bottom plate from bottom to top. The light source includes a number of LED lamps disposed on the bottom plate and opposite to a light entrance surface of the light guide plate. One surface of the bottom plate facing the light guide plate is coated with a reflective material. The back plate of the backlight module according to the present application includes a bottom plate and one surface of the bottom plate facing the light guide plate is coated with a reflective material. 1. A backlight module , comprising: a back plate , a light guide plate , an optical film group and a light source , wherein the back plate comprises a bottom plate , the light guide plate and the optical film group are sequentially disposed on the bottom plate from bottom to top , the light source comprises a plurality of LED lamps disposed on the bottom plate and opposite to a light entrance surface of the light guide plate , and one surface of the bottom plate facing the light guide plate is coated with a reflective material.2. The backlight module according to claim 1 , wherein the back plate further comprises a side plate extending upwardly from the bottom plate claim 1 , one side of the side plate afar from the light entrance surface of the light guide plate having an opening shape.3. The backlight module according to claim 2 , wherein the back plate further comprises a top plate extending from the side plate towards the optical film group claim 2 , the top plate extends to one edge of the optical film group and fits to an upper surface of the optical film group.4. The backlight module according to claim 3 , wherein surfaces of the side plate and ...

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Номер записи: 74
20-01-2022 дата публикации

TRANSPARENT DISPLAY PANEL, PREPARATION METHOD THEREOF AND DISPLAY DEVICE

Номер: US20220019108A1
Автор: Cui Zhao, DONG Liwen, HOU Dongfei, LIU Wenqu, LV Zhijun, Meng Detian, Song Xiaoxin, Wang Libo, YAO Qi, Zhang Feng
Принадлежит:

The present disclosure can provide a transparent display panel, a preparation method thereof and a display device. The transparent display panel includes a bearing layer disposed between a base substrate and a liquid crystal layer and including a plurality of concave structures, and a plurality of reflecting structures located between the bearing layer and the liquid crystal layer, where an orthographic projection of the concave structure on the base substrate covers an orthographic projection of one or more reflecting structures on the base substrate. 1. A transparent display panel , comprising a plurality of sub-pixels , and further comprising:a base substrate; a plurality of light entering regions, and', 'a plurality of light emitting regions spaced from the plurality of light entering regions,', 'wherein each sub-pixel comprises a light entering region and a light emitting region;, 'a light guide substrate, arranged opposite to the base substrate, and comprisinga liquid crystal layer, disposed between the base substrate and the light guide substrate; a plurality of concave structures,', 'wherein each sub-pixel comprises a concave structure; and, 'a bearing layer, disposed between the base substrate and the liquid crystal layer, and comprising 'wherein an orthographic projection of the concave structure on the base substrate covers an orthographic projection of one or more reflecting structures on the base substrate;', 'a plurality of reflecting structures, located between the bearing layer and the liquid crystal layer,'}wherein in a same sub-pixel,one or more reflecting structures reflect incident light to obtain emitted light, so that the emitted light is emitted by penetrating through the light emitting region of the light guide substrate; andthe incident light is incident on the one or more reflecting structures, through the liquid crystal layer, from the light entering region of the light guide substrate.2. The transparent display panel of claim 1 , wherein ...

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Номер записи: 75
08-01-2015 дата публикации

PHOSPHOR SHEET, LIGHT EMITTING UNIT, AND DISPLAY UNIT

Номер: US20150009454A1
Автор: Kobayashi Kenji, Nagatani Shinpei, NISHIDA Yasuhiro
Принадлежит:

A phosphor sheet includes: a stacked structure including a first phosphor layer and a pair of transparent films each being in contact with either side of the first phosphor layer; a seal layer integrally covering an area from an end face of the stacked structure to a periphery of the stacked structure; and a second phosphor layer further covering a portion of the seal layer, the portion covering at least the periphery of the stacked structure. 1. A phosphor sheet , comprising:a stacked structure including a first phosphor layer and a pair of transparent films each being in contact with either side of the first phosphor layer;a seal layer integrally covering an area from an end face of the stacked structure to a periphery of the stacked structure; anda second phosphor layer further covering a portion of the seal layer, the portion covering at least the periphery of the stacked structure.2. The phosphor sheet according to claim 1 , further comprising a light reflecting layer between the seal layer and the second phosphor layer.3. The phosphor sheet according to claim 1 , wherein the first and second phosphor layers are configured to emit white light when irradiated with blue light.4. The phosphor sheet according to claim 1 , wherein the first phosphor layer contains a sulfide phosphor claim 1 , andthe second phosphor layer contains a yttrium-aluminum-garnet (YAG) phosphor.5. The phosphor sheet according to claim 1 , wherein the second phosphor layer is provided on a portion of the seal layer claim 1 , the portion covering one of the pair of transparent films.6. The phosphor sheet according to claim 1 , wherein the pair of transparent films are configured of a moistureproof resin.7. The phosphor sheet according to claim 1 , wherein the seal layer is configured of aluminum.8. A light emitting unit claim 1 , comprising:a light source;a light guide plate having a first main surface and a second main surface opposed to each other, and an end face connecting the first main ...

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Номер записи: 76
08-01-2015 дата публикации

Side-lighting backlight and liquid crystal display comprising the same

Номер: US20150009708A1
Автор: Xiaoyu Huang
Принадлежит: Shenzhen China Star Optoelectronics Technology Co Ltd

The present disclosure relates to the technical field of flat panel display, and proposes a side-lighting backlight, including a back plate on which a reflecting plate is arranged, an optical sheet assembly spaced from the back plate to form an optical cavity therebetween, and a light-emitting element arranged on one side of the back plate, wherein a convex lens is arranged between the reflecting plate and the optical sheet assembly, so that light from the light-emitting element is guided into the optical cavity through the convex lens and then exits through the optical sheet assembly, and the distance between the convex lens and the light-emitting element is greater than a light coupling distance. The convex lens can also function to keep the distance between the optical sheet assembly and the reflecting plate constant. The side-lighting backlight according to the invention has a lighter weight, a thinner thickness and a greatly simplified manufacturing process over a backlight in the prior art.

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Номер записи: 77
14-01-2021 дата публикации

ILLUMINATED VEHICULAR EMBLEM

Номер: US20210009030A1
Автор: Ho Hsuan-Wei
Принадлежит:

An illuminated vehicular emblem for a means of transportation includes a housing unit, a lighting unit and a light dimming unit. The housing unit includes a bottom case, a top case disposed on the bottom case, and an emblem member disposed above the top case. A receiving space is defined between the top and bottom cases to receive the lighting unit. The lighting unit includes a light guide plate, light emitting components and a first light shielding film disposed on the light guide plate, The light emitting components are disposed at the light guide plate such that the light guide plate receives light emitted from the light emitting components. The light dimming unit changes the direction of propagation of the light and includes a first dot portion distributed on the light guide plate and along a projection of an outline of the emblem member. 1. An illuminated vehicular emblem , suitable for a means of transportation , the illuminated vehicular emblem comprising: a bottom case;', 'an emblem member disposed above the top case to achieve visual recognition, wherein a receiving space is defined between the top case and the bottom case;', 'a top case disposed on the bottom case; and'}], 'a housing unit adapted to be disposed on the means of transportation, the housing unit comprising a light guide plate;', 'a plurality of light emitting components threaded through the light guide plate and disposed at a central area of the light guide plate to allow the light guide plate to receive light emitted from the plurality of light emitting components; and', 'a first light shielding film disposed on the light guide plate; and, 'a lighting unit disposed in the receiving space, the lighting unit comprisinga light dimming unit disposed on the light guide plate to change a direction of propagation of the light, wherein the light dimming unit comprises a first dot portion distributed on the light guide plate and along a projection of an outline of the emblem member, to allow part of ...

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Номер записи: 78
12-01-2017 дата публикации

VIEWING ANGLE SWITCHABLE BACK LIGHT UNIT

Номер: US20170010400A1
Автор: BANG Hyungseok, Bruder Friedrich-Karl, HYUN Joobong, RYU Seungman
Принадлежит:

The present disclosure relates to a viewing angle switchable back light unit in which the general mode and the privacy mode in a liquid crystal display can be selected. The present disclosure suggests a thin film type back light unit comprising: a light guide film including a light entering part disposed at one side, a light changing part disposed at other side and a light guiding part connecting the light entering part and the light changing part; a light radiating part disposed on an upper surface of the light guide film; and a light source disposed at the light entering part of the light guide film. The light entering part includes a wedge light coupler and a light deflection element. The light changing part includes a light reflecting pattern. The light radiating part includes a light radiating film providing some of the collimated lights as back lights. 1. A back light unit , comprising:a light guide film including a light entering part disposed at one side, a light changing part disposed at other side and a light guiding part connecting the light entering part and the light changing part;a light radiating part disposed on an upper surface of the light guide film; anda light source disposed at the light entering part of the light guide film, a wedge light coupler converting expanded incident lights provide from the light source into vertical semi-collimated lights having a narrow expanding angle on a horizontal plane and being semi-collimated on a vertical plane; and', 'a light deflection element converting the vertical semi-collimated lights received from the wedge light coupler into vertical collimated lights on the vertical plane satisfying a total reflection condition within the light guiding part,, 'wherein the light entering part includeswherein the light changing part includes: a light reflecting pattern for coverting the vertical collimated lights received from the light guiding part into collimated lights being further collimated on the horizontal ...

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Номер записи: 79
12-01-2017 дата публикации

LIGHT-EMITTING DEVICE AND DISPLAY DEVICE

Номер: US20170010402A1
Автор: Ohkawa Shingo
Принадлежит:

A light-emitting device of the present disclosure includes: a first light-guiding plate having a first light incidence surface and a first light emission enhancement surface provided with a first pattern; and a second light-guiding plate having a second light incidence surface and a second light emission enhancement surface provided with a second pattern. The first pattern is a pattern constituted by a plurality of first punctiform sections of which an arrangement pitch changes to cause density of the first punctiform sections to increase as a distance from the first light incidence surface increases, and the second pattern is a pattern constituted by a plurality of second punctiform sections of which an arrangement pitch changes to cause density of the second punctiform sections to increase as a distance from the second light incidence surface increases, and when viewed from the light emission direction, regions provided with the first pattern and the second pattern partially overlap, and directions in which densities of the first pattern and the second pattern increase are opposite to each other. 1. A light-emitting device , comprising:a first light-guiding plate having a first light incidence surface, a first light emitting surface that emits light toward a predetermined light emission direction, and a first light emission enhancement surface provided with a first pattern; anda second light-guiding plate having a second light incidence surface, a second light emitting surface that emits light toward the light emission direction, and a second light emission enhancement surface provided with a second pattern, the second light-guiding plate facing the first light-guiding plate,wherein the first pattern is a pattern including a plurality of first punctiform sections of which an arrangement pitch changes to cause density of the first punctiform sections to increase as a distance from the first light incidence surface increases,the second pattern is a pattern including ...

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Номер записи: 80
14-01-2016 дата публикации

BACKLIGHT MODULE AND DISPLAY DEVICE

Номер: US20160011357A1
Автор: Bu Zhanchang, KIM Woong, SONG Guannan, Wang Juan
Принадлежит:

The present disclosure provides a backlight module and a display device. The backlight module includes a back plate, a light bar arranged on the back plate, and a clamping structure. The clamping structure includes clamping members arranged on the light bar, and positioning connectors arranged on the back plate at positions corresponding to the clamping members. The clamping members cooperate with the positioning connectors to secure the light bar onto the back plate. 1. A backlight module , comprising a back plate and a light bar arranged on the back plate; wherein the backlight module further comprises a clamping structure; the clamping structure comprises clamping members arranged on the light bar , and positioning connectors arranged on the back plate at positions corresponding to the clamping members; the clamping members cooperate with the positioning connectors to secure the light bar onto the back plate.2. The backlight module according to claim 1 , wherein the clamping members comprise a plurality of plug boards arranged at a side of the light bar adjacent to the back plate; the positioning connectors comprise via-holes arranged in the back plate at positions corresponding to the plug boards; the plug boards extend through the via-holes and are bent to be attached to the back plate.3. The backlight module according to claim 2 , wherein the light bar comprises an aluminum substrate and a light source arranged at one side of the aluminum substrate; the clamping members are arranged at the other side of the aluminum substrate.4. The backlight module according to claim 3 , wherein the clamping members are formed integrally with the aluminum substrate.5. The backlight module according to claim 3 , wherein the clamping members are connected to the aluminum substrate by an adhesive or by welding.6. The backlight module according to claim 5 , wherein the plug board is made of flexible material.7. The backlight module according to claim 3 , wherein the aluminum ...

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Номер записи: 81
14-01-2016 дата публикации

LIGHTING DEVICE

Номер: US20160011363A1
Автор: KWON Oh Young
Принадлежит:

Provided is a lighting device. The lighting device includes a light emitting diode (LED) mounted on a substrate, a light transmitting member disposed above an illumination surface with a minimal gap from the LED, and a housing in which the substrate, the light transmitting member, and a battery assembly are assembled, wherein the light transmitting member is formed of a transparent material to transmit light from a light source onto the illumination surface, the light transmitting member has a generally thin rectangular shape formed by two mutually-facing lateral surfaces, two mutually-facing end surfaces, an upper major surface, and a lower major surface, one or more of the end surfaces being coated with a reflective material, and one or more of the upper and lower major surfaces having negative curvatures. 1. A lighting device comprising:a light emitting diode (LED) mounted on a substrate;a light transmitting member disposed above an illumination surface with a minimal gap from the LED; anda housing in which the substrate, the light transmitting member, and a battery assembly are assembled,wherein the light transmitting member is formed of a transparent material to transmit light from a light source onto the illumination surface,the light transmitting member has a generally thin rectangular shape formed by two mutually-facing lateral surfaces, two mutually-facing end surfaces, an upper major surface, and a lower major surface,one or more of the end surfaces are coated with a reflective material, and one or more of the upper and lower major surfaces have negative curvatures, andthe light transmitting member is disposed along an optical path of the LED to refract light emitted from the LED onto the illumination surface.2. The lighting device of claim 1 , wherein the light transmitting member is bent to enhance illumination of the illumination surface.3. The lighting device of claim 1 , wherein the upper major surface is coupled with a Fresnel lens for optical ...

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Номер записи: 82
14-01-2016 дата публикации

Backlight Device and Display Apparatus

Номер: US20160011364A1
Автор: Horiguchi Yuki
Принадлежит: Sakai Display Products Corporation

Provided are a compact and inexpensive backlight device that can prevent a large movement of an optical sheet, and a display apparatus including the backlight device. In a backlight device, light emitted by the plurality of LEDs enters an upper end face of a light guide plate, and the light guide plate emits the light from one plane. The optical sheet faces one plane of the light guide plate. A cover body is provided between one plane of the light guide plate and the optical sheet, and covers the plurality of LEDs and the circumferential part of one plane of the light guide plate on the LED side. A regulation member is engaged with each of the optical sheet and the cover body to regulate a movement of the optical sheet in the plane direction. 14-. (canceled)5. A backlight device , comprising:a light source;a light guide plate with an end face which light from the light source enters and with one plane from which the light is emitted;an optical sheet that faces the one plane;a cover body that is disposed between the one plane of the light guide plate and the optical sheet, and covers the light source and a circumferential part of the one plane on the light source side; anda regulation member that is engaged with each of the optical sheet and the cover body to regulates a movement of the optical sheet in a plane direction.6. The backlight device according to claim 5 ,wherein the optical sheet includes a through hole,wherein the cover body includes:a first cover part that covers the circumferential part of the one plane;a second cover part that covers the end face of the light guide plate;a first hole which is provided in the first cover part and communicates with the through hole; anda second hole provided in the second cover part, andwherein the regulation member includes:a first insertion part that is inserted into the through hole and the first hole;a second insertion part that is inserted into the second hole; anda connecting part that connects the first insertion ...

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Номер записи: 83
11-01-2018 дата публикации

BACKLIGHT UNIT, DISPLAY DEVICE INCLUDING THE SAME, AND METHOD OF FABRICATING THE BACKLIGHT UNIT

Номер: US20180011235A1
Автор: BAE Kwangsoo, BANG Jungsuk, CHO DONCHAN, KWON Pilsook, OH Minjeong, YUN Haeju
Принадлежит:

A backlight unit includes a light source generating light, a light guide plate guiding the light in an upper direction, and an optical member disposed on the light guide plate to condense the light provided from the light guide plate in the upper direction. A top surface of the light guide plate includes a plurality of circular areas and a peripheral area around the circular areas. Each of the circular areas includes a central circular area and a ring area surrounding the central circular area. The optical member includes a first insulating layer disposed on the light guide plate and spaced apart from the light guide plate by predetermined distances in the ring areas and the peripheral area to define a plurality of cavities, and a second insulating layer disposed on the first insulating layer. 1. A backlight unit comprising:a light source which generates light;a light guide plate which guides the light from the light source in an upper direction toward a display panel which displays an image with the light; andan optical member which receives the light from the light guide plate and condenses the light provided from the light guide plate in the upper direction toward the display panel,wherein a top surface of the light guide plate includes a plurality of circular areas spaced apart from each other and a peripheral area which is around the circular areas,wherein in a top plan view, each of the circular areas of the light guide plate includes a central circular area and a ring area which surrounds the central circular area, and a first insulating layer disposed on the light guide plate, the first insulating layer spaced apart in the upper direction from the top surface of the light guide plate by a predetermined distance at the ring areas and at the peripheral area of the light guide plate to define a plurality of cavities; and', 'a second insulating layer disposed on the first insulating layer., 'wherein the optical member comprises2. The backlight unit of claim 1 , ...

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Номер записи: 84
14-01-2021 дата публикации

Electronic device

Номер: US20210011212A1
Автор: Chun-Fang CHEN, Hui-Wen SU, Wei-Tsung Hsu
Принадлежит: Innolux Corp

An electronic device is provided. The electronic device includes a backlight module. The backlight module includes a light-guiding plate and a light-guiding element, and the light-guiding element is disposed under the light-guiding plate. In addition, the light-guiding element has a protruding structure, and the protruding structure faces the light-guiding plate.

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Номер записи: 85
10-01-2019 дата публикации

BACKLIGHT MODULE AND DISPLAY MODULE

Номер: US20190011632A1
Автор: Ma Yongda, Qiao Yong, Xian Jianbo
Принадлежит: BOE Technology Group Co., Ltd.

A backlight module and a display module are disclosed. The backlight module includes: a back plate and an optical component, wherein at least one positioning structure is disposed on the back plate, the optical component is provided with an opening which is matched with the positioning structure, and a surface of the positioning structure facing an inner wall of the opening is a curved surface. The backlight module can reduce or avoid the deformation of the positioning structure when being subjected to an external force. 1. A backlight module , comprising: a back plate and an optical component ,wherein at least one positioning structure is disposed on the back plate, the optical component is provided with an opening which is matched with the positioning structure, and a surface of the positioning structure facing an inner wall of the opening is a curved surface.2. The backlight module according to claim 1 , wherein a first end of the positioning structure is connected with the back plate claim 1 , a second end of the positioning structure is extended along a direction perpendicular to a plane of the back plate.3. The backlight module according to claim 2 , wherein a projection of the curved surface on the plane of the back plate is in non-linear shape.4. The backlight module according to claim 3 , wherein the non-linear shape comprises an arc claim 3 , a zigzag and a wavy line.5. The backlight module according to claim 1 , wherein the back plate and the positioning structure are integrated structure.6. The backlight module according to claim 5 , wherein the positioning structure is formed by bending a portion of the back plate.7. The backlight module according to claim 2 , wherein the surface of the positioning structure facing the inner wall of the opening of the optical component is one of a concave surface and a convex surface claim 2 , the inner wall of the opening of the optical component is the other of the concave surface and the convex surface claim 2 , and ...

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Номер записи: 86
09-01-2020 дата публикации

BACKLIGHT UNIT AND DISPLAY DEVICE INCLUDING THE SAME

Номер: US20200012030A1
Автор: KIM Min Su, Lee Hong Beom, LIM Tae Woo, PARK Keun Woo
Принадлежит:

Disclosed herein is a backlight unit, the backlight unit comprises a light guide plate; a wavelength conversion layer disposed above the light guide plate; and a reflective polarizing layer disposed above the wavelength conversion layer and comprising a patterned polarizer, wherein the wavelength conversion layer and the reflective polarizing layer are integrally formed as one piece. 1. A backlight unit comprising:a light guide plate;a wavelength conversion layer disposed above the light guide plate; anda reflective polarizing layer disposed above the wavelength conversion layer and comprising a patterned polarizer,wherein the wavelength conversion layer and the reflective polarizing layer are integrally formed as one piece.2. The backlight unit of claim 1 , further comprising:a low-refractive layer disposed between the light guide plate and the wavelength conversion layer; anda passivation layer disposed between the wavelength conversion layer and the reflective polarizing layer,wherein the light guide plate, the wavelength conversion layer and the reflective polarizing layer are integrally formed as one piece.3. The backlight unit of claim 2 , wherein the passivation layer comprises a first passivation layer disposed on the wavelength conversion layer claim 2 , a second passivation layer disposed on the first passivation layer claim 2 , and a third passivation layer disposed on the second passivation layer.4. The backlight unit of claim 3 , wherein the first passivation layer and the third passivation layer comprise an inorganic material claim 3 , and wherein the second passivation layer comprises an organic material.5. The backlight unit of claim 3 , further comprising: a top cover layer disposed on the reflective polarizing layer.6. The backlight unit of claim 5 , wherein the top cover layer comprises an inorganic material claim 5 , and wherein a thickness of the top cover layer is larger than a thickness of the first passivation layer and a thickness of the ...

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Номер записи: 87
15-01-2015 дата публикации

IMAGE DISPLAY DEVICE AND TELEVISION RECEPTION DEVICE

Номер: US20150015798A1
Автор: Itoh Motomitsu, Masuda Yusuke
Принадлежит: SHARP KABUSHIKI KAISHA

A liquid crystal display device () is provided with the following: an LED (); a liquid crystal panel (); a light guide plate () disposed so as to overlap the liquid crystal panel (); an optical member () disposed between the liquid crystal panel () and the light guide plate (); a holding member (HM) having a frame () and a chassis () for holding in a sandwiched manner the liquid crystal panel (), the optical member () and the light guide plate (); a first object of positioning determination unit () disposed at the edge of the light guide plate (); a positioning determination unit () disposed on the frame () and for determining the position of the light guide plate () in a direction following the plate surface by causing uneven engagement of the light guide plate with respect to the first object of positioning determination unit (); and a light-shielding sheet () for blocking direct incidence of light from the first object of positioning determination unit () on the liquid crystal panel () by covering at least a portion of a gap (C) formed between the positioning determination unit () and the first object of positioning determination unit () and by being provided between the light guide plate () and the liquid crystal panel (). 1. A display device , comprising:a light source;a display panel that performs display using light from the light source;a light guide plate laid on a side of the display panel opposite to a display surface side, the light guide plate being disposed such that an edge face thereof faces the light source;an optical member disposed between the display panel and the light guide plate;a pair of holding parts that sandwiches the display panel, the optical member, and the light guide plate, and houses the light source, respectively from the display surface side and a side opposite thereto;a receptor portion provided in an edge of the light guide plate;a positioning portion provided in at least one of the pair of holding parts that engages with the ...

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Номер записи: 88
15-01-2015 дата публикации

Display Device

Номер: US20150016145A1
Автор: Munenori Motooka, Nobuyuki SUZUKI
Принадлежит: Japan Display Inc

A backlight unit includes a light source having an emission region, a wiring board having the light source mounted thereon, a light guide plate having a side surface into which light from the light source enters, and a front surface from which the light exits, a light shielding adhesive tape adhering to the wiring board, and an optical sheet which overlaps with the front surface of the light guide plate. The front surface of the light guide plate includes an effective region serving as a planar light source and a light entering region ranging from the side surface to the effective region. The wiring board and the light-shielding adhesive tape each have a part positioned in the light entering region, and the optical sheet is arranged from the effective region to the light entering region. An end portion of the optical sheet overlaps with the light-shielding tape.

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Номер записи: 89
19-01-2017 дата публикации

OPTICAL CONVERSION MEMBER, METHOD FOR MANUFACTURING OPTICAL CONVERSION MEMBER, BACKLIGHT UNIT INCLUDING OPTICAL CONVERSION MEMBER, AND LIQUID CRYSTAL DISPLAY DEVICE

Номер: US20170017022A1
Автор: Saitoh Yukito, SEKIGUCHI Megumi, YONEMOTO Takashi
Принадлежит: FUJIFILM Corporation

Disclosed is an optical conversion member, including an optical conversion layer containing quantum dot emitting fluorescent light and an anisotropic light scattering layer having I (0°)/I (40°) of 3 or greater, in which I (0°) indicates a transmission light intensity of the anisotropic light scattering layer at the time of allowing light to be incident on the anisotropic light scattering layer from a normal direction of a surface of the anisotropic light scattering layer, and I (40°) indicates a transmission light intensity of the anisotropic light scattering layer in an azimuth in which a transmission light intensity of the anisotropic light scattering layer at the time of allowing light to be incident on the anisotropic light scattering layer from a direction of a tilt angle of 40° with respect to the normal direction of the surface of the anisotropic light scattering layer becomes a minimum value. 1. An optical conversion member , comprising:an optical conversion layer containing at least one type of quantum dot emitting fluorescent light which is excited by incident excitation light; andan anisotropic light scattering layer having I (0°)/I (40°) of greater than or equal to 3,wherein I (0°) indicates a transmission light intensity of the anisotropic light scattering layer at the time of allowing light to be incident on the anisotropic light scattering layer from a normal direction of a surface of the anisotropic light scattering layer, andI (40°) indicates a transmission light intensity of the anisotropic light scattering layer in an azimuth in which a transmission light intensity of the anisotropic light scattering layer at the time of allowing light to be incident on the anisotropic light scattering layer from a direction of a tilt angle of 40° with respect to the normal direction of the surface of the anisotropic light scattering layer becomes a minimum value.2. The optical conversion member according to claim 1 ,wherein the optical conversion layer is a ...

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Номер записи: 90
19-01-2017 дата публикации

LIQUID CRYSTAL PANEL, LIQUID CRYSTAL DISPLAY DEVICE, POLARIZING PLATE, AND POLARIZING PLATE PROTECTIVE FILM

Номер: US20170017118A1
Автор: Saitoh Yukito, YONEMOTO Takashi
Принадлежит: FUJIFILM Corporation

One embodiment of the present invention relates to a liquid crystal panel including a liquid crystal panel member including a visible side polarizer, a liquid crystal cell, and a backlight side polarizer; and an optical conversion member including an optical conversion layer containing a quantum dot emitting fluorescent light which is excited by incident excitation light, in which the optical conversion member is integrally laminated on a backlight side surface of the liquid crystal panel member, a liquid crystal display device, a polarizing plate, and a polarizing plate protective film. 1. A liquid crystal panel , comprising:a liquid crystal panel member including a visible side polarizer, a liquid crystal cell, and a backlight side polarizer; andan optical conversion member including an optical conversion layer containing a quantum dot emitting fluorescent light which is excited by incident excitation light,wherein the optical conversion member is integrally laminated on a backlight side surface of the liquid crystal panel member.2. The liquid crystal panel according to claim 1 ,wherein the optical conversion member includes at least one barrier layer.3. The liquid crystal panel according to claim 1 , further comprising:a brightness enhancement film,wherein the backlight side polarizer, the brightness enhancement film, and the optical conversion layer are provided in this order.4. The liquid crystal panel according to claim 3 ,wherein the brightness enhancement film includes a reflection polarizer including a cholesteric liquid crystal layer allowing circularly polarized light to exit, and further includes a λ/4 plate between the reflection polarizer and the backlight side polarizer.5. The liquid crystal panel according to claim 3 ,wherein the brightness enhancement film includes a reflection polarizer allowing linearly polarized light to exit.6. The liquid crystal panel according to claim 3 ,wherein the brightness enhancement film includes an optically functional ...

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Номер записи: 91
21-01-2016 дата публикации

System for Assembling Optical Films for Displays

Номер: US20160018587A1
Автор: Koraishy Babar M.
Принадлежит:

Display backlight structures may provide backlight illumination that passes through display layers in the display. Computer-controlled equipment such as robotic arms with gripper structures may be used in assembling backlight layers such as a reflector, light guide plate, diffusers, and prism films into a backlight unit. The grippers may include mechanical grippers and vacuum heads. A vacuum gripper head may have a plenum to which a perforated plate and porous layer are attached for distributing the vacuum. Computer-controlled air sources may be used to blow streams of deionized air between backlight layers to separate the backlight layers during assembly. Release liners may be removed using robotic arms and grippers. Translation stages may move a backlight layer storage frame between stations. A cleaning tool with a solvent dispenser and air jets may clean backlight layers. A camera system may be used during alignment and positioning operations.

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Номер записи: 92
21-01-2016 дата публикации

DISPLAY DEVICE

Номер: US20160018589A1
Автор: HA Seung Hwa, SON Myoung Seok
Принадлежит:

A display device that may include a bottom chassis including a base portion and one or more side portions extending at a predetermined angle from the base portion, a light guide plate on an upper surface of the bottom chassis, an optical sheet on the light guide plate, and a display panel on the optical sheet. At least one of the side portions may have a different width from the other side portions.

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Номер записи: 93
21-01-2016 дата публикации

LIQUID CRYSTAL DISPLAY AND MANUFACTURING METHOD THEREOF

Номер: US20160018692A1
Автор: PARK Se-Ki
Принадлежит:

A liquid crystal display includes a display panel having a lower substrate, an upper substrate disposed opposite to the lower substrate, and a liquid crystal layer disposed between the lower and upper substrates, a light source which emits light, a glass light guide plate which diffuses the light from the light source to the display panel, and a first bonding member which bonds the lower substrate to the glass light guide plate.

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Номер записи: 94
18-01-2018 дата публикации

DISPLAY DEVICE HAVING QUANTUM DOT

Номер: US20180017726A1
Автор: Kim Hyo Jun, KIM Se Eun, KIM Young Joo, Lee Jae Yong, SHIN Min Ho
Принадлежит: Industry-Academic Cooperation Foundation, Yonsei University

Disclosed is a quantum dot display device including a light emitting unit configured to generate a light; and a color conversion unit configured to convert the light generated from the light emitting unit to a color light. The color conversion unit includes a quantum dot portion configured to convert the light to the color light; a bridge portion configured to provide a color conversion path of the light passing the quantum dot portion and to vertically guide the light; and a prism portion configured to guide the light passing the bridge portion to an outside. The above configuration may enhance the light efficiency by providing a sufficient color conversion path of light. 1. A quantum dot display device comprising:a light emitting unit configured to generate a light; anda color conversion unit configured to convert the light generated from the light emitting unit to a color light,wherein the color conversion unit comprises:a quantum dot portion configured to convert the light to the color light;a bridge portion configured to provide a color conversion path of the light passing the quantum dot portion and to vertically guide the light; anda prism portion configured to guide the light passing the bridge portion to an outside.2. The quantum dot display device of claim 1 , wherein the light emitting unit comprises:a light source configured to generate the light;a guide layer provided to face the light source and configured to guide the light to the color conversion unit; anda reflective layer provided to face the color conversion unit based on the guide layer, and configured to reflect the light toward the color conversion unit.3. The quantum dot display device of claim 2 , wherein the light source comprises a light emitting diode (LED).4. The quantum dot display device of claim 1 , wherein the quantum dot portion comprises:a quantum dot layer configured to include a plurality of quantum dots for converting the light to the color light; anda single pair of barrier ...

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Номер записи: 95
18-01-2018 дата публикации

DISPLAY DEVICE

Номер: US20180017729A1
Автор: FUKUOKA Kenta
Принадлежит:

Provided is a display device that can be realized with a simple configuration and functions as a transparent display allowing background to be clearly seen therethrough. 1. A display device that can display an image on a transparent display through which background is seen from a front side of the display device , the display device comprising:a first illuminant/ambient light adjusting unit that is configured of a pixel array having a plurality of pixels arranged therein and modulates a polarization direction of incident light for each of the pixels and transmits the incident light to the front side in a case where a voltage corresponding to an externally provided image signal is applied;a polarized illumination unit that is arranged on a rear surface of the first illuminant/ambient light adjusting unit, transmits ambient light incident from a rear side thereof toward the first illuminant/ambient light adjusting unit, and emits polarized illumination light, of illuminant light emitted from an illuminant, including a specific polarization direction toward the first illuminant/ambient light adjusting unit; anda first polarized component separating unit that is arranged on a front surface of the first illuminant/ambient light adjusting unit and transmits at least any of the ambient light and the polarized illumination light having a polarization direction in the same direction as a transmission axis thereof to the front side in a case where at least any of the ambient light and the polarized illumination light is incident;wherein the polarized illumination unit includes an illuminant that emits the illuminant light, and a light guide plate that causes the illuminant light to propagate by total internal reflection on a surface thereof and emits the illuminant light to the front side and the rear side, the illuminant light includes at least a polarized component changing in a width direction of the light guide plate and is incident on the light guide plate from one edge ...

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Номер записи: 96
17-01-2019 дата публикации

Display device

Номер: US20190018274A1
Автор: Jaeyong YOO, Sangmin Baek, Uihyung Lee
Принадлежит: LG ELECTRONICS INC

A display device is disclosed. The display device comprises: a display panel; an optical layer positioned at a rear of the display panel, the optical layer providing the display panel with light; a side frame including: a side frame body covering an edge of the optical layer; and a side frame extension extended from the side frame body, the side frame extension positioned between the optical layer and the display panel; and a light guide module positioned between the display panel and the side frame extension, the light guide module elongated along the edge of the optical layer, wherein a gap is formed between the light guide module and the display panel.

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Номер записи: 97
16-01-2020 дата публикации

LIGHT PROJECTING METHOD AND DEVICE

Номер: US20200018887A1
Автор: LYU Fanglu
Принадлежит:

A waveguide comprises a first surface and a second surface. The first surface comprises a first plurality of grating structures. The waveguide is configured to guide an in-coupled light beam to undergo total internal reflection between the first surface and the second surface. The first grating structures are configured to disrupt the total internal reflection to cause at least a portion of the in-coupled light beam to couple out of the waveguide and project from the first surface, the portion of the in-coupled light beam coupled out of the waveguide forming out-coupled light beams, the out-coupled light beams being configured to form an array of dots on a surface where the out-coupled light beams are projected on. 1. A waveguide , comprising: a first surface and a second surface , wherein:the first surface comprises a first plurality of grating structures;the waveguide is configured to guide an in-coupled light beam to undergo total internal reflection between the first surface and the second surface;the first grating structures are configured to disrupt the total internal reflection to cause at least a portion of the in-coupled light beam to couple out of the waveguide and project from the first surface, the portion of the in-coupled light beam coupled out of the waveguide forming out-coupled light beams;andthe out-coupled light beams converge from the first surface to form an upright cone of light on top of the first plurality of grating structures.2. The waveguide of claim 1 , wherein:after converging from the first surface to form an upright cone of light, the out-coupled light beams diverge to form an inverted cone of light above the upright cone of light; anda cross-section of the upright or inverted cone parallel to the first surface comprises an array of dots corresponding to the out-coupled light beams.3. The waveguide of claim 1 , further comprising a fourth surface and a light-absorbing material layer claim 1 , wherein:a remainder of the in-coupled light ...

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Номер записи: 98
16-01-2020 дата публикации

LIGHT PROJECTING METHOD AND DEVICE

Номер: US20200018888A1
Автор: LYU Fanglu
Принадлежит:

A waveguide comprises a first surface and a second surface. The second surface comprises a first plurality of grating structures. The waveguide is configured to guide an in-coupled light beam to undergo total internal reflection between the first surface and the second surface. The grating structures are configured to disrupt the total internal reflection to cause at least a portion of the in-coupled light beam to couple out of the waveguide from the first surface, the portion of the in-coupled light beam coupled out of the waveguide forming out-coupled light beams. The waveguide further comprises a reflective layer disposed on the second surface and covering the first grating structures. 1. A waveguide , comprising: a first surface and a second surface , wherein:the second surface comprises a first plurality of grating structures;the waveguide is configured to guide an in-coupled light beam to undergo total internal reflection between the first surface and the second surface;the grating structures are configured to disrupt the total internal reflection to cause at least a portion of the in-coupled light beam to couple out of the waveguide from the first surface, the portion of the in-coupled light beam coupled out of the waveguide forming out-coupled light beams; andthe waveguide further comprises a reflective layer disposed on the second surface and covering the first grating structures.2. The waveguide of claim 1 , wherein:the reflective layer comprises one or more sub-layers, each sub-layer comprising at least one of: aluminum, silver, gold, copper, titanium, chromium, nickel, germanium, indium, tin, platinum, palladium, zinc, aluminum oxide, silver oxide, gold oxide, copper oxide, titanium oxide, chromium oxide, nickel oxide, germanium oxide, indium oxide, tin oxide, platinum oxide, palladium oxide, zinc oxide, aluminum nitride, silver nitride, gold nitride, copper nitride, titanium nitride, chromium nitride, nickel nitride, germanium nitride, indium nitride, ...

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Номер записи: 99
16-01-2020 дата публикации

LIGHT PROJECTING METHOD AND DEVICE

Номер: US20200018890A1
Автор: LYU Fanglu
Принадлежит:

A waveguide comprises a first surface and a second surface. The first surface comprises a first plurality of grating structures. The waveguide is configured to guide an in-coupled light beam to undergo total internal reflection between the first surface and the second surface. The first grating structures are configured to disrupt the total internal reflection to cause at least a portion of the in-coupled light beam to couple out of the waveguide and project from the first surface, the portion of the in-coupled light beam coupled out of the waveguide forming out-coupled light beams, the out-coupled light beams being configured to form an array of dots on a surface where the out-coupled light beams are projected on. 130.-. (canceled)31. A waveguide , comprising: a first surface and a second surface , wherein:the first surface comprises a first plurality of grating structures;the waveguide is configured to guide an in-coupled light beam to undergo total internal reflection between the first surface and the second surface;the first plurality of grating structures are configured to disrupt the total internal reflection to cause at least a portion of the in-coupled light beam to couple out of the waveguide from the first surface, the portion of the in-coupled light beam coupled out of the waveguide forming out-coupled light beams;the first surface is in an x-y plane comprising an x-direction and a y-direction perpendicular to each other;the in-coupled light beam propagates inside the waveguide substantially along the x-direction of the x-y plane;the out-coupled light beams propagate substantially along a z-direction normal to the x-y plane;the first plurality of grating structures are each associated with a grating depth and a duty cycle in the x-y plane with respect to the z-direction; andthe first plurality of grating structures at different x-direction positions have at least one of: different grating depths or different grating duty cycles.32. The waveguide of claim ...

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Номер записи: 100