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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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09-02-2012 дата публикации

Light-Emitting Device

Номер: US20120032606A1

Автор: Hiroyuki Miyake, Kei Takahashi, Ryota Fukumoto, Yoshifumi Tanada

Принадлежит: Semiconductor Energy Laboratory Co Ltd

The amplitude of a potential of a signal line is decreased and a scan line driver circuit is prevented from being excessively loaded. A light-emitting device includes a light-emitting element; a first power supply line having a first potential; a second power supply line having a second potential; a first transistor for controlling a connection between the first power supply line and the light-emitting element; a second transistor, which is controlled in accordance with a video signal, whether outputting the second potential applied from the second power supply line or not; a switching element for selecting either the first potential applied from the first power supply line or the output of the second transistor; and a third transistor for selecting whether the first potential or the output of the second transistor which is selected by the switch is applied to a gate of the first transistor.

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Номер записи: 1

15-03-2012 дата публикации

Display device

Номер: US20120062529A1

Автор: Jun Koyama

Принадлежит: Semiconductor Energy Laboratory Co Ltd

Provided is to secure a data-writing period to a source line and reduce the number of the IC chips used. N image data (e.g., three image data, RGB) are sequentially input to one input terminal. Three switches, three first memory elements, three transfer switches, three second memory elements, and three buffers are connected in parallel to the input terminal. The three switches are turned on respectively. RGB image data are held in the three respective first memory elements. In a selection period of a gate line of an (m−1)-th row, image data of an m-th row are written to the first memory elements. When the three transfer switches are turned on in a selection period of a gate line of an m-th row, the image data are transferred to and held in the second memory elements. Then, the image data are output to each source line through each buffer.

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Номер записи: 2

22-03-2012 дата публикации

Light emitting device, drive control method thereof, and electronic device

Номер: US20120068986A1

Автор: Jun Ogura, Yasushi Mizutani

Принадлежит: Casio Computer Co Ltd

The light emitting device comprises at least one data line, at least one pixel, a common electrode, a data driver and an ammeter, The pixel comprises a pixel drive circuit and a light emitting element, in which the pixel drive circuit includes a first transistor electrically connected to the data line and one end of the light emitting element, and the other end of the light emitting element is connected to the common electrode. The ammeter measures the current value of a detection current flowing from the data driver to the ammeter via the data line, the first transistor, the light emitting element of the pixel, and the common electrode when the data driver applies to the data line a first set voltage having such a potential that applies a forward bias voltage between both ends of the light emitting element via the first transistor.

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Номер записи: 3

05-04-2012 дата публикации

Multi-line addressing methods and apparatus

Номер: US20120081416A1

Автор: Euan Christopher Smith, Jonathan James Michael Halls, Paul Richard Routley

Принадлежит: Cambridge Display Technology Ltd

This invention relates to methods and apparatus for driving emissive, in particular organic light emitting diodes (OLED) displays using multi-line addressing (MLA) techniques. Embodiments of the invention are particularly suitable for use with so-called passive matrix OLED displays. A method of driving an emissive display, the display comprising a plurality of pixels each addressable by a row electrode and a column electrode, the method comprising: driving a plurality of said column electrodes with a first set of column drive signals; and driving two or more of said row electrodes with a first set of forward bias row drive signals at the same time as said column electrode driving with said column drive signals; then driving said plurality of column electrodes with a second and subsequent sets of column drive signals; and driving said two or more row electrodes with a second and subsequent sets of forward bias row drive signals at the same time as said column electrode driving with said second column drive signals.

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Номер записи: 4

26-04-2012 дата публикации

Display device and driving method thereof

Номер: US20120098738A1

Автор: Hajime Kimura, Yasunori Yoshida

Принадлежит: Semiconductor Energy Laboratory Co Ltd

It is an object of the present invention to provide a display device in which problems such as an increase of power consumption and increase of a load of when light is emitted are reduced by using a method for realizing pseudo impulsive driving by inserting an dark image, and a driving method thereof. A display device which displays a gray scale by dividing one frame period into a plurality of subframe periods, where one frame period is divided into at least a first subframe period and a second subframe period; and when luminance in the first subframe period to display the maximum gray scale is Lmax 1 and luminance in the second subframe period to display the maximum gray scale is Lmax 2 , (1/2) Lmax 2 <Lmax 1 <(9/10) Lmax 2 is satisfied in the one frame period, is provided.

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Номер записи: 5

17-05-2012 дата публикации

Display device

Номер: US20120120041A1

Автор: Makoto Kohno, Nobuyuki Mori, Seiichi Mizukoshi

Принадлежит: GLOBAL OLED TECHNOLOGY LLC

Display unevenness is suppressed. A display device includes pixels ( 22 ) arranged in matrix, each including a current-driven type light emitting element (EL) and a drive transistor (Tr 3 ) for supplying a current to the current-driven type light emitting element (EL). The current-driven type light emitting element (EL) is driven by dividing each frame period into a plurality of sub-frame periods for lighting time. The drive transistor is controlled under current write driving using two write currents having a ratio of 1:1/2 N and a sum of the two write currents.

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Номер записи: 6

21-06-2012 дата публикации

Display Device

Номер: US20120153293A1

Автор: Hajime Kimura, Jun Koyama

Принадлежит: Semiconductor Energy Laboratory Co Ltd

There is provided an active matrix EL display device that can display a clear multi gray-scale color display to reduce the shift in the potential caused by the potential drop due to the wiring resistance of a power source supply line, in order to decrease the unevenness in a display region. A plurality of drawing out ports of the power source supply line are arranged. Further, in the wiring resistance between the external input terminal and the pixel portion power source supply line, potential compensation is performed by supplying potential to the power source supply line by a feedback amplifier. Further, in addition to above structure, the power source supply line may be arranged in a matrix.

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Номер записи: 7

21-06-2012 дата публикации

Apparatus of driving light emitting diode using erasable programmable logic device chip

Номер: US20120153862A1

Автор: Chang Sub Lee, Jin Ho Park, Ki Young Kim, Min Su Kim, Sang Gon Lee, Sang Hun Lee, Te O Jung

Принадлежит: SAMSUNG ELECTRONICS CO LTD

Provided is an apparatus that drives a light emitting device using an erasable programmable logic device (EPLD) chip. The apparatus may include the light emitting device, and a driving unit to use the EPLD chip storing programming information corresponding to the light emitting device, and to drive the light emitting device based on the stored programming information. The EPLD chip may receive the programming information inputted from an external terminal, and may store the programming information in a predetermined storage space.

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Номер записи: 8

28-06-2012 дата публикации

Electro-luminescence pixel, panel with the pixel, and device and method for driving the panel

Номер: US20120162052A1

Автор: In Hwan Kim, Jin Chul Choi, Jin Hyoung Kim, Sang Keun Lee, Seung Chan Byun

Принадлежит: LG Display Co Ltd

An electro-luminescence display having a plurality of pixels is disclosed. One of the pixels of the electro-luminescence display includes an electro-luminescence diode electrically connected between first and second voltage sources; first and second thin film transistors adjusting an amount of current flowing to the electro-luminescence diode; and a control circuit complementarily operating the first and second thin film transistors in an active mode and a refresh mode.

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Номер записи: 9

05-07-2012 дата публикации

Image display device capable of supporting brightness enhancement and power control and method thereof

Номер: US20120169797A1

Автор: Chang-Yeong Kim, In-Ji Kim, Seong-deok Lee, Won-Hee Choe

Принадлежит: Individual

An image display device capable of supporting brightness enhancement and power control and a method thereof, in which the brightness and contrast are enhanced and the power of a light source is controlled in accordance with the image characteristic. In the image display method, a parameter representative of an input image is calculated from a histogram of the input image, a model corresponding to the input image is selected from a plurality of representative models by analyzing the parameter, and then a brightness controlling function matched with the selected model is selected. The size of each component of a pixel constituting the input image is controlled using the brightness controlling function, and the output image of the pixel whose component size has been controlled is displayed.

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Номер записи: 10

12-07-2012 дата публикации

Display device and method of driving the same

Номер: US20120176422A1

Автор: Shinya Ono

Принадлежит: Panasonic Corp

The display device including pixels has formed therein at least two drive blocks each made up of pixel rows. Each of the pixels includes: a drive transistor; a capacitor element, a luminescence element; and a first switching transistor which causes conduction between the source of the drive transistor and a fixed potential line. Each of the pixels further includes a second switching transistor which connects a pixel in a k-th drive block and a first signal line or a third switching transistor which connects a pixel in a (k+1)-th drive block and a second signal line. A first control line for controlling conduction of the first switching element is connected to each of the pixels in a same one of the drive blocks.

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Номер записи: 11

02-08-2012 дата публикации

Display device and method of controlling the same

Номер: US20120194576A1

Автор: Masafumi Matsui, Shinya Ono

Принадлежит: Panasonic Corp

A display device including pixels has formed therein at least two driving blocks each made up of pixel rows, and includes: a signal line driving circuit that outputs a signal voltage to an output line disposed in each of pixel columns; and a selector circuit that provides a signal voltage outputted from the output line to one of a first signal line and a second signal line which are provided in each of the columns, provides a standard voltage from a standard voltage source to one of the two signal lines, and provides the signal voltage and the standard voltage mutually exclusively to the two signal lines. Each of the pixels includes a current control unit and an organic EL element. Pixels in the k-th driving block are connected to the first signal line and pixels in the (k+1)-th driving block are connected to the second signal line.

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Номер записи: 12

23-08-2012 дата публикации

Image display device and method of driving the same

Номер: US20120212474A1

Автор: Dong-Yong Shin, Moon-Sang Hwang, Won-Jun Choe

Принадлежит: Samsung Display Co Ltd

An image display device capable of reducing power consumption. The image display device includes: a position determining unit for determining positions of horizontal lines to which data input to a timing controller are to be supplied; a look-up table (LUT) for storing pre-emphasis voltage information corresponding to the positions of the horizontal lines; the timing controller for transmitting the data and the pre-emphasis voltage information to a data driver; a pre-emphasis voltage generator for generating a pre-emphasis voltage to correspond to the pre-emphasis voltage information from the data driver; and the data driver for supplying the pre-emphasis voltage to data lines in a partial period of a horizontal period and for supplying a data signal in a remaining period of the horizontal period.

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Номер записи: 13

08-11-2012 дата публикации

Pixel circuit and display device

Номер: US20120280962A1

Автор: Kazuyoshi Kawabe

Принадлежит: GLOBAL OLED TECHNOLOGY LLC

[Problem to be solved] Obtain a constitution for a data driver which does not easily affected by transistor characteristics. [Solution] A plurality of coupling capacitances 7 is connected to data enable lines which is equipped to at least two set potentials. A plurality of bit transistors 6 which is turned on and off in accordance with the display data of a plurality of bits controls the relation of connection between a plurality of coupling capacitances and data enable lines to control the total capacitance of the said plurality of coupling capacitances. Display element operates in accordance with the voltage accumulated to the total capacitance of the said coupling capacitance according to the difference between the two set potentials equipped to the data enable line. By the operations above, a display is controlled by multi-bit display data per each pixel.

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Номер записи: 14

15-11-2012 дата публикации

EL Display device and Method for Manufacturing the Same

Номер: US20120286283A1

Автор: Mayumi Mizukami, Shunpei Yamazaki, Toshimitsu Konuma

Принадлежит: Semiconductor Energy Laboratory Co Ltd

Plurality of pixels ( 102 ) are arranged on the substrate. Each of the pixels ( 102 ) is provided with an EL element which utilizes as a cathode a pixel electrode ( 105 ) connected to a current control TFT ( 104 ). On a counter substrate ( 110 ), a light shielding film ( 112 ) is disposed at the position corresponding to periphery of each pixel ( 102 ), while a color filter ( 113 ) is disposed at the position corresponding to each of the pixels ( 102 ). This light shielding film makes the contour of the pixels clear, resulting in an image display with high definition. In addition, it is possible to fabricate the EL display device of the present invention with most of an existing manufacturing line for liquid crystal display devices. Thus, an amount of equipment investment can be significantly reduced, thereby resulting in a reduction in the total manufacturing cost.

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Номер записи: 15

24-01-2013 дата публикации

Techniques to control of self refresh display functionality

Номер: US20130021357A1

Автор: Michael Calyer, Narayan Biswal, Ravi Ranganathan, Seh W. Kwa

Принадлежит: Individual

Techniques are described to monitor a level of graphics processing activity and control power usage based on the level. When no graphics processing activity is detected for a period of time, then a timing controller for a display device is instructed to capture a current image and repeatedly display the captured image. The graphics processing devices can be powered down. When graphics processing activity is detected, the graphics processing devices are powered up and the components used to capture an image and display the captured image are powered down.

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Номер записи: 16

07-02-2013 дата публикации

Optical Element for Correcting Color Blindness

Номер: US20130033776A1

Автор: Amane Mochizuki, Brett T. Harding, SHENG Li

Принадлежит: Nitto Denko Corp

Described herein are devices, compositions, and methods for improving color discernment.

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Номер записи: 17

14-02-2013 дата публикации

Display device

Номер: US20130038596A1

Автор: Kouhei EBISUNO, Shinya Ono

Принадлежит: Panasonic Corp

A display device according to the present invention includes: an organic EL element; an electrostatic holding capacitor; a drive transistor having a gate connected to one electrode of an electrostatic holding capacitor and a source connected to an anode of the organic EL element; another electrostatic holding capacitor having an electrode connected to the other electrode of the one electrostatic holding capacitor; a negative power supply line which determines a potential of a cathode of the organic EL element; and a scanning line drive circuit which controls switching transistors. In a display period, the entire display area of a display unit is caused to start generating photons at once. In a non-display period, the entire display area of the display unit is caused to stop generating photons at once, and the drive transistor is reset.

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Номер записи: 18

07-03-2013 дата публикации

Optical Element for Correcting Color Blindness

Номер: US20130057824A1

Автор: Amane Mochizuki, Brett T. Harding, SHENG Li

Принадлежит: Nitto Denko Corp

Described herein are devices, compositions, and methods for improving color discernment.

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Номер записи: 19

04-04-2013 дата публикации

ELECTRO-OPTICAL DEVICE AND ELECTRONIC APPARATUS

Номер: US20130082911A1

Автор: MOMOSE Yoichi

Принадлежит: EPSON IMAGING DEVICES CORPORATION

An electro-optical device including: first display elements divided into at least a first region and a second region, for displaying a first image, and second display elements each divided into at least a third region and a fourth region, for displaying a second image, the first and second display elements being arranged such that each third region is disposed between the first region and the second region of the adjacent first display element and each second region is disposed between the third region and the fourth region of the adjacent second display element; a parallax barrier layer provided on a side of the display elements adjacent to a viewer, the parallax barrier having light transmitting regions at positions thereof corresponding to boundaries between adjoining first and third regions as well as between adjoining second and fourth regions; and a spacer layer separating the display elements from the parallax barrier layer. 1. An electro-optical device comprising:a plurality of pixel electrodes; anda plurality of data lines,a first data signal transmitted by a first data line of the plurality of data lines being supplied to a first pixel electrode and a second pixel electrode of the plurality of pixel electrodes,a second data signal transmitted by a second data line of the plurality of data lines being supplied to a third pixel electrode and a fourth pixel electrode of the plurality of pixel electrodes,the second pixel electrode and the third pixel electrode being arranged between the first pixel electrode and the fourth pixel electrode,a first outline of the first pixel electrode being constituted by a plurality of first sides,a second outline of the second pixel electrode being constituted by a plurality of second sides,a third outline of the third pixel electrode being constituted by a plurality of third sides,a fourth outline of the fourth pixel electrode being constituted by a plurality of fourth sides, anda first distance between one first side ...

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Номер записи: 20

11-04-2013 дата публикации

Active-matrix display device, and active-matrix organic electroluminescent display device

Номер: US20130088524A1

Автор: Akira Yumoto

Принадлежит: Individual

An active-matrix display device employs current-programmed-type pixel circuits and performs the writing data to each of pixels on a line-by-line basis. The active-matrix display device having a matrix of current-programmed-type pixel circuits includes a data line driving circuit 15 formed of m current driving circuits (CD) 15 - 1 to 15 - m arranged corresponding to respective data lines 13 - 1 to 13 - m . The data line driving circuit (CD) 15 - 1 to 15 - m holds image data (luminance data herein) in the form of voltage, and then converts the voltage of the image data into a current signal. The current signal is then fed to the data lines 13 - 1 to 13 - m at a time. The image information is thus written on the pixel circuits 11.

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Номер записи: 21

18-04-2013 дата публикации

Display Device

Номер: US20130093650A1

Автор: KOYAMA Jun

Принадлежит: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

A signal line driving circuit which includes a digital signal sampling circuit, a storage circuit, a time setting circuit and a constant current circuit, is fabricated of TFTs on an insulating substrate which is made of the same substance as that of a pixel portion substrate. Thus, in a passive type EL display device, the problem of a distortion in the case of bonding the signal line driving circuit onto the pixel portion substrate can be eliminated. Besides, in an active type EL display device, each pixel is constructed of one transistor and an EL element. Thus, the aperture factor of the EL display device is enlarged. 1. A display device comprising:a first substrate;a pixel portion over the first substrate; a first circuit comprising an op amp;', 'a second circuit comprising a latch circuit, wherein an output of the second circuit is operationally connected to an input terminal of the first circuit,, 'a source driver circuit over the first substrate, the source driver circuit comprisinga first line electrically connected to the pixel portion, wherein the first line is operationally connected to an output terminal of the first circuit;a second substrate over the first substrate with the pixel portion, the source driver circuit, and the first line interposed therebetween;a first sealing material interposed between the first substrate and the second substrate, wherein the first sealing material is disposed along peripheries of the first and second substrates; anda second sealing material formed outside of the first sealing material, wherein the second sealing material is in contact with side surfaces of the first and second substrates.2. The display device according to claim 1 , further comprising a filler filled in an area surrounded by the first sealing material claim 1 , the first substrate claim 1 , and the second substrate.3. The display device according to claim 2 , wherein the filler includes a hygroscopic substance.4. The display device according to claim 3 , ...

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Номер записи: 22

18-04-2013 дата публикации

Organic light-emitting display device

Номер: US20130093652A1

Автор: Jin Hyoung Kim, Kyoung Sik Choi, Seung Tae Kim, Ui Jeong

Принадлежит: LG Display Co Ltd

An organic light-emitting display device includes: an organic light-emitting panel comprising a plurality of pixel regions, each pixel region comprising a scan line and a data line crossing each other, each pixel region further comprising an organic light-emission element and a drive transistor configured to drive the organic light emission element; and a circuit configured to sense a threshold voltage of the drive transistor in a sensing interval and control a light emission of the organic light emission element within the pixel region in a display interval.

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Номер записи: 23

18-04-2013 дата публикации

HANDWRITING INPUT BOARD AND INFORMATION PROCESSING SYSTEM USING HANDWRITING INPUT BOARD

Номер: US20130093733A1

Автор: Yoshida Kenji

Принадлежит:

A handwriting input board whereby handwritten characters can be erased, and erased characters can be stored. The handwriting input board includes: a display panel provided with a writing area in which dot patterns, in which coordinates and/or code values are repeatedly defined, are arranged; and a scanner pen which can be used to draw on or touch the display panel to draw a trail. The scanner pen includes: an optical reading unit that optically reads the dot pattern provided on the display panel; and a dot code analysis unit. When the scanner pen is used to draw on or touch the display panel, the scanner pen sequentially images the dot pattern, the dot code analysis unit analyzes the dot pattern and outputs coordinates and/or code values, and a trail is displayed visibly on the display panel. The handwriting input board also includes an erasure unit for erasing the displayed trail. 1. A handwriting input board comprising:a display panel on at least some area of which is arranged a dot pattern where coordinate values and/or code values are repeatedly defined, at least part of the some area being provided with a writing area; anda scanner pen that draws a trail by drawing or touching on the display panel,wherein the scanner pen, by comprising an optical reading unit that optically reads the dot pattern provided on the display panel and a dot code analysis unit, sequentially images the dot pattern by drawing or touching on the display panel, analyzes the dot pattern by the dot code analysis unit, outputs the coordinate values and/or code values, visibly displays the trail that is made by drawing or touching by the scanner pen on the display panel in accordance with a predetermined display method, and comprises an erasure unit to erase the displayed trail.2. The handwriting input board according to claim 1 , wherein the dot pattern arranged on the at least some area defines a code value for identifying the display panel in a predetermined area or a whole area and/or a ...

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Номер записи: 24

25-04-2013 дата публикации

Current Driving Circuit and Display Device Using The Current Driving Circuit

Номер: US20130099832A1

Автор: Hajime Kimura

Принадлежит: Semiconductor Energy Laboratory Co Ltd

A current drive circuit which can improve a rate for signal writing and a driving rate of an element even when a signal current is small, and a display device using the current drive circuit are provided. The current drive circuit for supplying a signal current to a node of a driven circuit through a signal line includes a precharge function for supplying a precharge voltage to the node through the signal line and the precharge function includes a supply function for supplying the precharge voltage to the node and the signal line prior to supplying the signal current.

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Номер записи: 25

25-04-2013 дата публикации

ORGANIC EL DISPLAY DEVICE

Номер: US20130100002A1

Автор: EBISUNO Kouhei, MATSUI Masafumi, ONO Shinya

Принадлежит: Panasonic Corporation

An organic electro-luminescence (EL) display device including: above a substrate, scanning lines; data lines; emissive pixels disposed near cross-points of the scanning lines and the data lines; and power supply lines for supplying currents to the emissive pixels, wherein the emissive pixels each have: a switching thin film transistor having a gate to which a scan signal is supplied via one of the scanning lines; a current control thin film transistor for controlling a current to be applied to the emissive pixel, in accordance with the voltage determined based on a data voltage supplied from one of the data lines via the switching thin film transistor; and an organic EL element to which a current is supplied from one of the power supply lines via the current control thin film transistor, the organic EL element including a lower electrode, an organic light-emissive layer, and an upper electrode. 1. An organic electro-luminescence (EL) display device comprising: above a substrate ,plural scanning lines;plural data lines;emissive pixels disposed near cross-points of the plural scanning lines and the plural data lines;and power supply lines for supplying currents to the emissive pixels,wherein the emissive pixels each have:a switching thin film transistor having a gate to which a scan signal is supplied via one of the plural scanning lines;a current control thin film transistor for controlling a current to be applied to the emissive pixel, in accordance with a voltage applied to a gate of the current control thin film transistor, the voltage being determined based on a data voltage supplied from one of the plural data lines to the gate of the current control thin film transistor via the switching thin film transistor; andan organic EL element to which a current is supplied from one of the power supply lines via the current control thin film transistor, the organic EL element including a lower electrode, an organic light-emissive layer, and an upper electrode,the organic ...

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Номер записи: 26

25-04-2013 дата публикации

Optical Element for Correcting Color Blindness

Номер: US20130100048A1

Автор: FUJII Hironaka, Harding Brett T., Li Sheng, Mochizuki Amane

Принадлежит:

Described herein are devices, compositions, and methods for improving color discernment. 1. An electronic device comprising:an electronic display; andan optical element comprising a luminescent compound in a substantially transparent matrix;wherein the device is configured so that at least a portion of the light emitted from the display passes through the optical element, and the optical element modifies a color of the light emitted from the display that passes through the optical element.2. The electronic device of claim 1 , further comprising a touch screen component coupled to the optical element and the electronic display; wherein the touch screen component comprises:a first conductive layer, a second conductive layer, and a spacer between the first conductive layer and the second conductive layer, wherein the first conductive layer and the second conductive layer are substantially transparent;wherein the device is configured so that contact by a user to the touch screen can cause the first conductive layer to contact the second conductive layer to thereby allow current to flow between the first conductive layer and the second conductive layer; andwherein the device is configured so that at least a portion of the light emitted from the display passes through the touch screen component and passes through the optical element.3. The electronic device of claim 2 , wherein the touch screen component further comprises a first support layer claim 2 , wherein the first conductive layer is disposed between the spacer and the first support layer.4. The electronic device of claim 2 , wherein the touch screen component further comprises a second support layer claim 2 , wherein the second conductive layer is disposed between the spacer and the second support layer.5. The electronic device of claim 2 , wherein the touch screen component further comprises a first dielectric layer claim 2 , wherein the first dielectric layer is disposed between the first conductive layer and ...

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Номер записи: 27

02-05-2013 дата публикации

ORGANIC EL DISPLAY APPARATUS

Номер: US20130106676A1

Автор: EBISUNO Kouhei, ONO Shinya

Принадлежит: Panasonic Corporation

In an organic electroluminescence (EL) display apparatus, a bus line is provided on an edge of a display unit in a display panel. A feedback circuit unit is provided outside of the bus line, and an output voltage of the feedback circuit unit is applied to a connecting part on the bus line. To the feedback circuit unit, a reference voltage from a reference voltage generating unit is applied, a power supply voltage from a power supply unit is supplied, and a monitoring voltage from the connecting part on the bus line is fed back. The feedback circuit unit includes a switching control circuit and a transistor, and controls, using a feedback, the output voltage by supplying or blocking the power supply voltage to an output terminal, so that a voltage at the connecting point is equal to a target voltage determined by the reference voltage. 1. An organic electroluminescence (EL) display apparatus comprising:a display unit in which a plurality of pixel units each including an organic EL element are provided on a substrate;a power supply bus line which is provided in an outer periphery of the display unit and supplies, to each of the pixel units in the display unit, a driving voltage for driving the pixel unit;a feedback circuit unit configured to generate an output voltage and supply the output voltage to the power supply bus line;a power supply unit configured to supply, to the feedback circuit unit, a power supply voltage including a high power supply voltage for driving the feedback circuit unit and a low power supply voltage which is lower than the high power supply voltage; anda reference voltage generating unit configured to supply, to the feedback circuit unit, a reference voltage for determining a target voltage to be a voltage in the power supply bus line,wherein the feedback circuit unit is configured to generate the output voltage based on the power supply voltage supplied from the power supply unit, a first power supply terminal to which the high power supply ...

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Номер записи: 28

09-05-2013 дата публикации

IMAGE DISPLAY DEVICE

Номер: US20130113691A1

Автор: Takasugi Shinji

Принадлежит: LG DISPLAY CO., LTD.

An image display device includes a plurality of pixels, and feeders that commonly supply power to the plurality of pixels. In this image display device, each of the pixels has a light-emitting portion that emits light by a current supplied to the light-emitting portion, a driver that controls light emission of the light-emitting portion, and a switching portion electrically connected to the driver. The parasitic capacitance of the switching portion is determined with respect to each one pixel or one group of pixels according to the voltage drop of said feeder. 1. An image display device comprising:a plurality of pixels;a feeder that commonly supplies power to said plurality of pixels; anda control line electrically connected to each of said pixels; each of said pixels including:a light-emitting portion that emits light by a current being supplied to said light-emitting portion;a driver that controls light emission of said light-emitting portion;a switching portion electrically connected to said driver; wherein a parasitic capacitance of said switching portion is determined with respect to each one pixel or one group of pixels according to a voltage drop of said feeder; anda second switching portion electrically connected to said driver and said switching portion,wherein said driver has a first terminal, a second terminal, and a third terminal, said first terminal controlling the current flowing between said second terminal and said third terminal; said switching portion has a fourth terminal, a fifth terminal, and a sixth terminal, said fourth terminal controlling the current flowing between said fifth terminal and said sixth terminal; said second switching portion has a seventh terminal, a eighth terminal, and a ninth terminal, said seventh terminal controlling the current flowing between said eighth terminal and said ninth terminal, andwherein said third terminal is directly connected to said light-emitting portion during light emission of said light-emitting ...

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Номер записи: 29

09-05-2013 дата публикации

DISPLAY AND METHOD FOR MANUFACTURING DISPLAY

Номер: US20130113692A1

Автор: Minami Tetsuo, Uchino Katsuhide, Yamashita Junichi

Принадлежит: SONY CORPORATION

A display includes a pixel array part with pixels that each have at least one transistor whose conduction state is controlled by a drive signal input to a control terminal, and a scanner including a plurality of buffers that are formed of transistors. The buffers correspond to a pixel arrangement and output a drive signal to the control terminals of the transistors of the pixels. The transistors of the pixels and the transistors of the buffers are formed through irradiation with laser light that is moved for scanning in a predetermined direction and has a predetermined wavelength. The transistors in the buffers are formed in such a way that the channel length direction of the transistors is set parallel to the scan direction of the laser light. 1. A display comprising:a pixel array part configured to include a plurality of pixel circuits that are arranged in a matrix and each have at least one transistor of which conduction state is controlled through reception of a drive signal to a control terminal;a scanner configured to include a plurality of buffers that are formed of transistors, the buffers outputting the drive signal to the pixel circuits, whereinthe transistors in the buffers are formed through irradiation with laser light that is moved for scanning in a predetermined direction, andthe transistors in the buffers are formed in such a way that a channel length direction of the transistors is set parallel to a scan direction of the laser light.2. The display according to claim 1 , whereinthe scan direction is perpendicular to an extension direction of output lines for the drive signal, andthe transistors in the buffers in the scanner on stages corresponding to the pixel arrangement are formed in such a manner as to form a row along the channel length direction.3. The display according to claim 1 , whereinthe transistors in the buffers are formed in such a way that the channel length direction of only a final stage of the buffers is set parallel to the scan ...

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Номер записи: 30

16-05-2013 дата публикации

LIGHT-EMITTING COMPONENT DRIVING CIRCUIT AND RELATED PIXEL CIRCUIT AND APPLICATIONS USING THE SAME

Номер: US20130120342A1

Автор: Han Hsi-Rong, Huang Chih-Hung, Liao Wen-Tui, Wang Tsung-Yu, Wang Wen-Chun

Принадлежит:

An organic light emitting diode (OLED) pixel circuit is provided by the invention. If a circuit configuration (5T2C) thereof collocates with suitable operation waveforms, a current flowing through an OLED in the OLED pixel circuit may not be changed with a power supply voltage (Vdd) influenced by an IR drop, and may not be varied with a threshold voltage (Vth) shift of a thin-film-transistor (TFT) configured for driving the OLED. Accordingly, brightness uniformity of an OLED display applying the same can be substantially improved. 1. A pixel circuit , comprising:a light-emitting component, configured for performing light emission in response to a driving current in an emission phase;a first transistor, configured for delivering a data voltage in response to a first scanning signal in a data-writing phase;a first capacitor, coupled between the first transistor and a reference voltage, and configured for storing the data voltage in the data-writing phase;a second transistor, coupled to a power supply voltage, and configured for generating the driving current not influenced by the power supply voltage and a threshold voltage of the second transistor in the emission phase;a third transistor, serially connected between the second transistor and the light-emitting component, and configured for delivering the driving current to the light-emitting component in response to an emission signal in the emission phase;a second capacitor, coupled between the first transistor and the second transistor, and configured for memorizing a charging voltage relevant to the threshold voltage of the second transistor in response to a second scanning signal in a voltage-memorizing phase, wherein the charging voltage is changed in response to storage of the data voltage in the data-writing phase;a fourth transistor, coupled to the third transistor and the second capacitor, and configured for coordinating with the third transistor to initialize a first end voltage of the second capacitor in ...

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Номер записи: 31

23-05-2013 дата публикации

CONVERGENT MATRIX FACTORIZATION BASED ENTIRE FRAME IMAGE PROCESSING

Номер: US20130127886A1

Автор: Dubey Preeti, Subramanian Venkatesh K.

Принадлежит: INDIAN INSTITUTE OF TECHNOLOGY KANPUR

Drive signals for a display device may be generated using Separable Nonnegative Matrix Series Representation (SNMSR) of source image data and applying a non-negative matrix factorization (NNMF) process to source image data to generate approximation image data (I), partial sum image data (P) and residue image data (J). Iteratively, NNMF may be applied to Jsuch that subsequent Iand Jmay be generated, where each Ican be associated with a corresponding sub-frame image. At each iteration, the Imay be sent to the display buffer for selective activation of multiple row and column drivers during a single sub-frame interval. At each iteration, a determination may be made if a predetermined criterion is satisfied. The iterations may be terminated and the series truncated when the predetermined criterion is satisfied. Integration of the sub-frame images displayed over a complete frame interval by human eye effectively corresponds to the source image. 129.-. (canceled)30. A method for generating drive signals for a display device to display a source image responsive to source image data , the method comprising:applying a non-negative matrix factorization (NNMF) process to the source image data to generate approximation image data, partial sum image data and residue image data;iteratively applying the NNMF process to residue image data to generate subsequent approximation image data, partial sum image data, and residue image data, wherein each approximation image data is associated with a corresponding sub-frame image; sending the approximation image data to a display buffer; and', 'continuing the iterations until the predetermined criterion is satisfied;, 'for each application of the NNMF processpartitioning a total frame time into one or more sub-frame times associated with each sub-frame image; andsequentially sending the computed approximation image data for each sub-frame image to the display device to selectively activate multiple row drivers and multiple column drivers of ...

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Номер записи: 32

23-05-2013 дата публикации

Lighting period setting method, display panel driving method, backlight driving method, lighting condition setting device, semiconductor device, display panel and electronic equipment

Номер: US20130127929A1

Автор: Hironobu Abe, Hiroshi Hasegawa, Teppei Isobe

Принадлежит: Sony Corp

Disclosed herein is a lighting period setting method for a display panel which permits control of the peak luminance level by controlling the total lighting period length which is the sum of all lighting periods per field period, the lighting period setting method including the steps of, calculating the average luminance level across the screen based on input image data, determining light emission mode based on the calculated average luminance level, and setting the number, arrangement and lengths of lighting periods per field period according to the setting conditions defined for the determined light emission mode so as to provide the peak luminance level which is set according to the input image data.

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Номер записи: 33

23-05-2013 дата публикации

Display device and driving method thereof

Номер: US20130128015A1

Автор: Baek-woon Lee, Jong-Hwa Park, Kwang-Sub Shin, Si-Duk Sung

Принадлежит: Samsung Display Co Ltd

A display device configured to display a selected image type, the image type including a first image and a second image, according to an image source signal, the display device including: a display unit, the display unit including a first group pixel and a second group pixel; and an image processor, the image processor: arranging image signals for each frame of the display device according to a display sequence of the first image and the second image in the first group pixel and the second group pixel, changing the image type displayed during a remaining period for each frame unit of the image source signal.

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Номер записи: 34

30-05-2013 дата публикации

DISPLAY DEVICE

Номер: US20130135278A1

Автор: Toyotaka Kouhei

Принадлежит: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

To reduce power consumption of a display device including a scan line driver circuit formed using either n-channel transistors or p-channel transistors when the scan line driver circuit outputs, to one of two kinds of scan lines, inverted or substantially inverted signals of signals output to the other of the two kinds of scan lines. The display device includes a plurality of pulse output circuits each of which outputs a signal to one of two kinds of scan lines and a plurality of inverted pulse output circuits each of which outputs, to the other of the two kinds of scan lines, an inverted or substantially inverted signal output from the each of the pulse output circuits. The plurality of inverted pulse output circuits operate with signals used for the operation of the plurality of pulse output circuits. Thus, through current generated in the inverted pulse output circuits can be reduced. 1. A display device comprising:a plurality of pixels arranged in m rows and n columns (m and n are natural numbers greater than or equal to 4);respective first to m-th scan lines which are electrically connected to the n pixels arranged in respective first to m-th rows;respective first to m-th inverted scan lines which are electrically connected to the n pixels arranged in respective first to m-th rows; anda shift register electrically connected to the first to m-th scan lines and the first to m-th inverted scan lines, a first switch which is turned on by an input of a selection signal to the k-th scan line, and', 'a second switch which is turned on by an input of a selection signal to the k-th inverted scan line, and, 'wherein the pixels arranged in the k-th row (k is a natural number less than or equal to m) each include first to m-th pulse output circuits, and', 'first to m-th inverted pulse output circuits,', 'wherein to the s-th (s is a natural number less than or equal to (m−2)) pulse output circuit, a start pulse is input (only in a case where s is 1) or a shift pulse output ...

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Номер записи: 35

13-06-2013 дата публикации

PIXEL STRUCTURE OF ELECTROLUMINESCENT DISPLAY PANEL

Номер: US20130147689A1

Автор: Hsu Shih-Feng, Liu Chih-Che, Liu Meng-Yu

Принадлежит: AU OPTRONICS CORP.

A pixel structure of electroluminescent display panel has a first sub-pixel region, a second sub-pixel region, and a third sub-pixel region. The pixel structure of electroluminescent display panel includes a first organic light-emitting layer, and a second organic light-emitting layer. The first organic light-emitting layer is disposed in the first sub-pixel region for generating a first primary color light in the first sub-pixel region. The second organic light-emitting layer is disposed in the second sub-pixel region, and the third sub-pixel region for generating a second primary color light in the second sub-pixel region, and for generating a third primary color light in the third sub-pixel region. The first sub-pixel region, the second sub-pixel region, and the third sub-pixel region have different cavity lengths. 1. A pixel structure of an electroluminescent display panel having a first sub-pixel region , a second sub-pixel region , and a third sub-pixel region , the pixel structure of the electroluminescent display panel comprising:a first anode, disposed in the first sub-pixel region;a second anode, disposed in the second sub-pixel region;a third anode, disposed in the third sub-pixel region;a first organic light-emitting layer, disposed on the first anode and corresponding to the first sub-pixel region, wherein the first organic light-emitting layer comprises a first organic light-emitting material for generating a first primary color light;a second organic light-emitting layer, disposed on the second anode and the third anode, and corresponding to the second sub-pixel region and the third sub-pixel region, for generating a second primary color light in the second sub-pixel region and generating a third primary color light in the third sub-pixel region, wherein the first primary color light, the second primary color light, and the third primary color light have different spectra of wavelength;a first cathode, disposed on the first organic light-emitting ...

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Номер записи: 36

13-06-2013 дата публикации

DISPLAY DEVICE

Номер: US20130147692A1

Автор: Uchino Katsuhide, Yamashita Junichi

Принадлежит: SONY CORPORATION

Any one of a write scanning line, a power source supply line, and a video signal line is structured as a subsidiary wiring disposed in the same layer as that having a lower electrode disposed therein. The subsidiary wiring is used in the power source supply line through which a power source drive pulse to be pulse-driven is transmitted, or other wirings (such as the write scanning line and the video signal line). 1. A display device , comprising:a pixel array portion having a scanning line, a signal line, a first wiring, and a pixel circuit that includes a drive transistor for controlling a drive current, a sampling transistor, an electro-optic element, and a storage capacitor for holding information corresponding to a signal potential supplied from the signal line via the sampling transistor,wherein the signal line is wired in a first layer and the scanning line is wired in a second layer,the first wiring is disposed in a third layer different from the first and second layers, and is configured to supply an initialization voltage to the capacitor, andthe electro-optic element has a lower electrode disposed in the third layer, an organic layer disposed on the lower electrode and an upper electrode disposed on the organic layer.2. The display device of claim 1 ,wherein the first wiring extends in parallel to and covers in a layer-stacking direction one of the signal line and the scanning line.3. The display device of claim 1 ,further comprising a second wiring disposed in one of the first and second layers,wherein the second wiring is connected to the first wiring as a subsidiary wiring thereof.4. The display device of claim 3 ,wherein the second wiring extends in parallel to and is covered in a layer-stacking direction by the first wiring.5. The display device of claim 4 ,wherein one of the signal line and the scanning line extends in parallel to and is covered in a layer-stacking direction by the first wiring.6. The display device of claim 1 ,further comprising a ...

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Номер записи: 37

13-06-2013 дата публикации

DISPLAY UNIT AND ELECTRONIC APPARATUS

Номер: US20130147858A1

Автор: Omoto Keisuke

Принадлежит: SONY CORPORATION

A display unit includes: a display panel including, for each pixel, four or more types of sub-pixels that are different from one another in luminescent colors; and a driving circuit applying a pulse based on an image signal to each of the sub-pixels, and applying, when the sub-pixels include a sub-pixel of a defect dot, a compensated pulse configured to correct the defect dot to the sub-pixels that are adjacent or close to the sub-pixel of the defect dot. 1. A display unit , comprising:a display panel including, for each pixel, four or more types of sub-pixels that are different from one another in luminescent colors; anda driving circuit applying a pulse based on an image signal to each of the sub-pixels, and applying, when the sub-pixels include a sub-pixel of a defect dot, a compensated pulse configured to correct the defect dot to the sub-pixels that are adjacent or close to the sub-pixel of the defect dot.2. The display unit according to claim 1 , wherein the compensated pulse is configured to allow a total luminance of the sub-pixels claim 1 , adjacent or close to the sub-pixel of the defect dot and to which the compensated pulse is applied claim 1 , to have a magnitude that corrects the defect dot.3. The display unit according to claim 2 , wherein the compensated pulse is configured to allow the total luminance to be same or substantially same as a luminescence that is supposed to be obtained by the sub-pixel of the defect dot at the time when the sub-pixel of the defect dot emits light.4. The display unit according to claim 2 , wherein each of the pixels includes claim 2 , as the four or more types of sub-pixels claim 2 , three first sub-pixels and one or more second sub-pixels claim 2 , the three first sub-pixels emitting light of respective three primary colors claim 2 , and the one or more second sub-pixels emitting color light obtained by additive color mixing.5. The display unit according to claim 4 , wherein the driving circuit applies the compensated ...

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Номер записи: 38

20-06-2013 дата публикации

DISPLAY APPARATUS AND DRIVING METHOD THEREOF

Номер: US20130154908A1

Автор: Kawasaki Somei

Принадлежит: CANON KABUSHIKI KAISHA

A display apparatus comprises: plural light emitting devices emitting light by plural kinds of colors; a driving circuit for each light emitting device; a scanning line selecting the driving circuit; a light emission control line causing the light emitting devices to emit light; and a data line supplying to the selected driving circuit a current signal according to brightness, wherein the driving circuit comprises a driving transistor supplying a current, a first-switch between a gate of the driving transistor and the data line, a second-switch between a drain of the driving transistor and the light emitting device, a first-capacitor having one end connected to the gate of the driving transistor and the other end potential-fixed, and a second-capacitor connected to the gate of the driving transistor and the light emission control line, and a capacitance ratio of the second-capacitor to first-capacitor varies according to the color of the emitted light. 18.-. (canceled)9. A display apparatus comprising:plural light emitting devices arranged in a row direction and a column direction, each of which emits light of a color selected from plural kinds of colors;a driving circuit connected to each of the plural light emitting devices;a scanning line for supplying a selection signal to select the driving circuits in the row direction;a light emission control line for supplying a light emission control signal to cause the light emitting devices in the row direction to emit light; anda data line for supplying a current signal designating brightness of the light emitting device to the selected driving circuits,wherein the driving circuit comprisesa driving transistor which supplies a current to the light emitting device, a first switch having one switch arranged between a gate and a drain of the driving transistor and another switch arranged between the drain of the driving transistor and the data line, with the first switch turned on in response to the selection signal on the ...

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Номер записи: 39

20-06-2013 дата публикации

Organic light emitting display device

Номер: US20130155033A1

Автор: Ga-Young Kim, Guang-Hai Jin, Jae-Beom Choi, June-Woo Lee, Kwan-Wook Jung, Moo-Jin Kim

Принадлежит: Samsung Mobile Display Co Ltd

An organic light emitting display device includes a pixel unit including a plurality of pixels formed in regions where a plurality of scan lines and a plurality of data lines cross each other, a first scan driving unit detecting a defect of the plurality of pixels by sequentially applying a first test signal to the plurality of scan lines, and a second scan driving unit detecting a defect of the plurality of pixels by simultaneously applying a second test signal to the plurality of scan lines.

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Номер записи: 40

04-07-2013 дата публикации

Light emitting display device and driving method thereof

Номер: US20130169699A1

Автор: Ji-Eun Lee, Na-Ri Kim, Ui-Taek Jeong

Принадлежит: LG Display Co Ltd

Disclosed is a light emitting display device capable of minimizing deviation of current driving capability between driving switching devices of respective pixels, thereby achieving enhanced screen quality. A method of driving the light emitting display device includes sensing the threshold voltage and mobility of driving Thin Film Transistor (TFT) of each pixel through each data line or each power line using a first sensing voltage; correcting an error of the mobility between the driving TFTs by again sensing the mobility of the driving TFT of each pixel through each data line or each power line using a second voltage; and compensating for video data to be displayed on a display panel using the threshold voltage and the corrected mobility.

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Номер записи: 41

01-08-2013 дата публикации

SPONTANEOUS LIGHT EMITTING DEVICE AND DRIVING METHOD THEREOF

Номер: US20130193858A1

Автор: KOYAMA Jun

Принадлежит: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

A counter counts the accumulated lighting time or the accumulated lighting time and the intensity of lighting of each pixel by a first image signal A and stores them in a volatile memory or a nonvolatile memory . A correction circuit corrects the first image signal based on the correction data stored previously in a correction data storage section in accordance with the degree of the degradation of each spontaneous light emitting element by the use of the accumulated lighting time or the accumulated lighting time and the intensity of lighting, and produces a second mage signal B. By the second image signal B, a display unit can provide a uniform screen having no variation in luminance even if the light emitting elements in a part of the pixels are degraded. 1. A light-emitting device comprising: a first transistor;', 'a second transistor; and', 'a light-emitting element, and, 'a display device comprising a plurality of pixels over a first substrate, each pixel comprising a correction unit;', 'a volatile memory; and', 'a nonvolatile memory,, 'a degradation correction unit over a second substrate, the degradation correction unit comprisingwherein a gate of the first transistor is electrically connected to a gate line,wherein one of a source and a drain of the first transistor is electrically connected to a source line,wherein the other of the source and the drain of the first transistor is electrically connected to a gate of the second transistor,wherein one of a source and a drain of the second transistor is electrically connected to a power line,wherein the other of the source and the drain of the second transistor is electrically connected to the light-emitting element,wherein the correction unit generates a second signal by correcting a first signal in accordance with a data stored in the volatile memory and the nonvolatile memory, andwherein the second signal is inputted to the gate of the second transistor through the source line and the first transistor.2. The ...

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Номер записи: 42

01-08-2013 дата публикации

Organic light emitting display and method of driving the same

Номер: US20130194245A1

Автор: Jae-Woo Ryu

Принадлежит: Samsung Display Co Ltd

An organic light emitting display capable of improving data charging time, includes pixels at crossing regions between scan and data lines and configured to control an amount of current supplied from a first to a second power source, a charge unit adjacent to an adjacent pixel of the pixels and coupled to the same data line as the adjacent pixel, a scan driver for supplying scan signals to the scan lines, a data driver for supplying data signals to the data lines in synchronization with the scan signals, and a comparison unit in a channel of the data driver to compare a data signal supplied to a current line with a data signal supplied to a previous line and to control coupling between the charge unit and the data line according to a comparison result in a partial period of a period in which the scan signals are supplied.

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Номер записи: 43

08-08-2013 дата публикации

Organic electroluminescence display device and method for driving the same

Номер: US20130200346A1

Автор: Chishio Hosokawa, Masahide Matsuura

Принадлежит: Idemitsu Kosan Co Ltd

In an organic electroluminescence display device ( 30 ) comprising an organic EL element ( 26 ) having a structure wherein an organic luminescent medium ( 24 ) is sandwiched between a top electrode ( 20 ) and a bottom electrode ( 22 ), and a driving circuit ( 14 ) for driving the organic EL element ( 26 ), the organic luminescent medium ( 24 ) comprises a host compound and a triplet-related luminous compound and the driving circuit ( 14 ) applies a electric pulse voltage or pulse current having a frequency of 30 Hz or more and a duty ratio of 1/5 or less. In this way, it is possible to provide an organic EL display device which consumes a low electric power and has a long luminous life span, and a method for driving the same.

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Номер записи: 44

15-08-2013 дата публикации

Display device and driving method for the same

Номер: US20130207940A1

Автор: An-Su Lee, Do-youb Kim, Myoung-Seop Song, Myung-Ho Lee, Seung-Woo Lee

Принадлежит: Samsung Display Co Ltd

A display device is disclosed. In one aspect, the display device includes a display panel for displaying an image in at least two separate fields during a frame, a panel driver configured to transmit output data for each field corresponding to the at least two fields and drive the display panel according to each field, and a controller configured to analyze an image pattern corresponding to input data, and generate the output data for each field from the input data according to an analysis result of the pattern, or extract each field data from the input data according to a predetermined data alignment method and generate the output data for each field by using the field data.

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Номер записи: 45

15-08-2013 дата публикации

Organic light emitting diode display and method of driving the same

Номер: US20130208015A1

Автор: Dae-Hyun Noh, Ki-Wook Kim, Wang-Jo Lee

Принадлежит: Samsung Mobile Display Co Ltd

An organic light emitting diode (OLED) display is disclosed. In one embodiment, the OLED display includes a panel including pixels which are configured to control an amount of current that flows from a first power source to a second power source to generate an image of predetermined brightness. The display may also include at least one first power source line formed on a top of the panel and at least one second power source line positioned on a bottom of the panel to face the first power source line. The display may further include a first switch configured to alternately supply the first power source to the first power source line and the second power source line.

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Номер записи: 46

15-08-2013 дата публикации

Display device and memory arranging method for image data thereof

Номер: US20130208019A1

Автор: An-Su Lee, Byung-Geun Jun, Do-youb Kim, Myung-Ho Lee, Seung-Woo Lee

Принадлежит: Samsung Mobile Display Co Ltd

A display device and an image data memory arrangement method thereof are disclosed. When driving one frame with first and second fields, an input data signal is divided into first and second field data and the first and second field data are respectively arranged according to a light emitting driving sequence to control the light emitting for each field to be displayed. The first and second field data signals respectively include a color data signal pattern in which the data signals transmitted to the pixels corresponding to the same pixel column among the pixels respectively included in the first pixel row and the fourth pixel row display the same color, and the data signals transmitted to the pixels corresponding to the same pixel column among the pixels respectively included in the second pixel row and the third pixel row display the same color.

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Номер записи: 47

15-08-2013 дата публикации

Display device and arranging method for image data thereof

Номер: US20130208021A1

Автор: An-Su Lee, Do-youb Kim, Seung-Woo Lee

Принадлежит: Samsung Mobile Display Co Ltd

A display device including a display panel having first pixels emitting light in a first field and second pixels emitting light in a second field is disclosed. According to one aspect, the display device includes a controller configured to extract first field data transmitted to the first pixels and second field data transmitted to the second pixels from input data, divide the first field data, insert black data between two neighboring first field data to generate first output data, divide the second field data, and insert black data between two neighboring second field data to generate second output data. The display device also includes a data driver configured to transmit a first data signal based on the first output data to the display panel in the first field and transmitting a second data signal based on the second output data to the display panel in the second field.

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Номер записи: 48

22-08-2013 дата публикации

Scanning drive circuit and display device including the same

Номер: US20130215098A1

Автор: Seiichiro Jinta, Takao Tanikame

Принадлежит: Sony Corp

Disclosed herein is a display device, including display elements two-dimensionally disposed in a matrix; scanning lines, initialization control lines, and display control lines extending in a first direction; data lines extending in a second direction different from the first direction; and a scanning drive circuit.

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Номер записи: 49

12-09-2013 дата публикации

Display apparatus and display-apparatus driving method

Номер: US20130235015A1

Автор: Seiichiro Jinta, Takao Tanikame

Принадлежит: Sony Corp

Disclosed herein is a driving method and display apparatus, the display apparatus including light emitting units, scan lines, data lines, a driving circuit provided for each of the light emitting units to serve as a circuit having a signal writing transistor, a device driving transistor, a capacitor and a first switch circuit, and a light emitting device.

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Номер записи: 50

19-09-2013 дата публикации

ELECTROLUMINESCENT DEVICE AGING COMPENSATION WITH MULTILEVEL DRIVE

Номер: US20130241811A1

Автор: White Christopher J.

Принадлежит:

An electroluminescent (EL) device with aging compensation has a luminance and a chromaticity that both correspond to the density of the current and the age of the EL emitter. Different black, first and second current densities are selected based on the measured age, each corresponding to emitted light colorimetrically distinct from the light emitted at the other two current densities. Respective percentages of a selected emission time are calculated for each current density to produce a designated luminance and chromaticity. The current densities are provided to the EL emitter for the calculated respective percentages of the emission time so that the integrated light output of the EL emitter during the selected emission time is colorimetrically indistinct from the designated luminance and chromaticity, no matter the age of the EL emitter. 1. An electroluminescent (EL) device , comprising:a) an EL emitter adapted to receive current and emit light having a luminance and a chromaticity that both correspond to the density of the current and an age of the EL emitter;b) a drive circuit electrically connected to the EL emitter for providing the current to the EL emitter;c) means for measuring the age of the EL emitter; i) at the selected black, first and second current densities the emitted light has respective black, first and second luminances and respective black, first and second chromaticities;', 'ii) the respective luminance of each of the black, first and second current densities is colorimetrically distinct from the other two luminances, or the respective chromaticity of each of the black, first and second current densities is colorimetrically distinct from the other two chromaticities; and', 'iii) the black luminance is less than a selected threshold of visibility, and the first and second luminances are greater than or equal to the selected threshold of visibility;, 'd) means for selecting different black, first and second current densities based on the measured ...

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Номер записи: 51

19-09-2013 дата публикации

EL DISPLAY DEVICE

Номер: US20130241966A1

Автор: TSUGE Hitoshi

Принадлежит: Panasonic Corporation

Provided is an EL display device that includes: an EL display panel including an array of a plurality of pixel circuits each having a drive transistor that applies a current to an organic EL element; a driver circuit that applies, to each of the pixel circuits, a signal in response to an image signal and a signal for selecting pixel circuits that are expected to emit light; and an N-bit D/A converter. An image display period in a single frame is divided into a first subframe and a second subframe, the first subframe performing display by light emission based on a gray-level signal of high N bits, the second subframe performing display by light emission based on a gray-level signal of low M bits (where M satisfies ML 1. An EL display device , comprising:an EL display panel including an array of a plurality of pixel circuits each having a drive transistor operable to apply a current to an organic EL element;a driver circuit operable to apply, to each of the pixel circuits, a signal in response to an image signal and a signal for selecting pixel circuits that are expected to emit light; andan image signal processing circuit including an N-bit D/A converter and providing signal processing to an image signal that has been inputted, and supply the processed signal to the driver circuit,wherein an image display period in a single frame is divided into at least two subframes including a first subframe and a second subframe, the first subframe performing display by light emission based on a gray-level signal of high N bits, the second subframe performing display by light emission based on a gray-level signal of low M bits (where M satisfies M Подробнее

Номер записи: 52

26-09-2013 дата публикации

DISPLAY APPARATUS AND ELECTRONIC APPARATUS

Номер: US20130249878A1

Автор: Uchino Katsuhide, Yamamoto Tetsuro

Принадлежит: SONY CORPORATION

Disclosed herein is a display apparatus, including: a plurality of subpixels disposed adjacent each other and forming one pixel which forms a unit for formation of a color image; the plurality of subpixels including a first subpixel which emits light of the shortest wavelength and a second subpixel disposed adjacent the first subpixel; the second subpixel having a light blocking member disposed between the second subpixel and the first subpixel and having a width greater than a channel length or a channel width of a transistor which forms the second subpixel. 1. A display apparatus , comprising:a plurality of subpixels disposed adjacent each other and forming one pixel which forms a unit for formation of a color image; a first subpixel which emits light including light having a blue wavelength, and', 'a second subpixel disposed adjacent said first subpixel;, 'said plurality of subpixels including'}wherein a light blocking member is disposed between a transistor which forms said second subpixel and said first subpixel, said light blocking member having a width greater than at least one of a channel length of said transistor and a channel width of said transistor.2. The display apparatus according to claim 1 , wherein each of said plurality of subpixels has an organic electro luminescence element.3. The display apparatus according to claim 1 , wherein said plurality of subpixels includes a red-light emitting pixel claim 1 , a green-light emitting pixel claim 1 , a blue-light emitting pixel claim 1 , and a white-light emitting pixel.4. The display apparatus according to claim 1 , wherein said plurality of subpixels includes a white-light emitting pixel.5. The display apparatus according to claim 1 , wherein said light blocking member is disposed in parallel to the longitudinal direction of said second subpixel.6. The display apparatus according to claim 1 , wherein said light blocking member is disposed in such a manner as to optically cover said transistor against the ...

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Номер записи: 53

26-09-2013 дата публикации

Brightness correcting system and method of correcting brightness

Номер: US20130249930A1

Автор: Min-Cheol Kim

Принадлежит: Samsung Display Co Ltd

A brightness correcting system and a method of correcting brightness are provided. The brightness correcting system includes a display unit divided into a plurality of sample regions, a brightness measuring unit for measuring brightness values in the sample regions, a controller for selecting a reference pixel from among representative pixels respectively included in the sample regions, an offset value calculating unit for calculating offset values corresponding to respective differences between the brightness value of the reference pixel and the brightness values of the representative pixels, and for linearly calculating offset values of remaining pixels using the offset values of the representative pixels, and a data correcting unit for correcting the image data using the offset values of the pixels and supplying the corrected image data to the data driver.

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Номер записи: 54

26-09-2013 дата публикации

Apparatus generating gray scale voltage for organic light emitting diode display device and generating method thereof

Номер: US20130249955A1

Автор: Jeong-Geun Yoo, Min-Weun Kim, Sang-Rak Kim

Принадлежит: Samsung Display Co Ltd

An apparatus for generating gray scale voltage includes a brightness/color coordinate correction unit having a gamma table including data corresponding to an image displayed on a pixel unit of an OLED device at a first brightness level, and a gamma reference voltage look-up table including voltage values of red, green, and blue data corresponding to each gray scale and brightness values at the first brightness level in accordance with the gamma table, a gamma control signal output unit configured to output a gamma reference voltage control signal corresponding to a second brightness level in accordance with the gamma table and the gamma reference voltage look-up table, and a gamma correction circuit configured to receive the gamma reference voltage control signal, to generate gray scale voltages corresponding to the second brightness level, and to output the generated gray scale voltages to a data driver.

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Номер записи: 55

03-10-2013 дата публикации

DISPLAY DEVICE AND OUTPUT BUFFER CIRCUIT FOR DRIVING THE SAME

Номер: US20130257697A1

Автор: Tanikame Takao

Принадлежит: SONY CORPORATION

Disclosed herein is a display device including: a plurality of pixel circuits; a power source line connected to corresponding ones of the plurality of pixel circuits; and an output buffer circuit for supplying currents to corresponding ones of the plurality of pixel circuits by alternately applying a first potential applied to a first power source supply terminal, and a second potential applied to a second power source supply terminal to the power source line. The output buffer includes a variable resistance circuit connected to a path between the first power source supply terminal and the power source line, the variable resistance circuit serving to change a resistance value thereof in accordance with a magnitude of a total sum of the currents. 1. A display device , comprising:a plurality of pixel circuits;a first scanning line connected to corresponding ones of the plurality of pixel circuits; and a first power source supply terminal connected through a first signal path to the first scanning line such that a first potential appearing on the first power source supply terminal may be selectively applied as a corresponding output potential to the first scanning line;', 'a second power source supply terminal connected through a second signal path to the first scanning line such that a second potential appearing on the second power source supply terminal may be selectively applied as a corresponding output potential to the first scanning line; and', 'a variable resistance circuit interposed in the first signal path between the first power source supply terminal and the first scanning line,, 'an output buffer circuit including the output buffer circuit is configured to supply signals to the corresponding ones of the plurality of pixel circuits by applying a selected corresponding output potential corresponding to either the first potential or the second potential to the first scanning line; and', 'the variable resistance circuit comprises a transistor with a gate ...

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Номер записи: 56

03-10-2013 дата публикации

Method of setting target locations for reducing image sticking, organic light emitting display device, and method of driving the same

Номер: US20130257884A1

Автор: Byung-Sik Koh

Принадлежит: Samsung Display Co Ltd

A method of setting target locations for reducing image sticking is provided. According to the method, a plurality of images, each of the images being displayed during each frame by an organic light emitting display device are acquired. The target locations at which image sticking frequently occurs are set by comparing the images. Image data corresponding to the target locations are stored in a memory unit. A plurality of pixel circuits may simultaneously emit light in the organic light emitting display device.

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Номер записи: 57

03-10-2013 дата публикации

Stereoscopic image display device and driving method thereof

Номер: US20130258466A1

Автор: Back-Woon LEE, Do-Ik Kim, Jeong-Keun Ahn, Joo-Hyeon Jeong

Принадлежит: Samsung Display Co Ltd

A stereoscopic image display device includes: a scan driver for transmitting scan signals to scan lines; a data driver for transmitting data signals to data lines; a display unit including pixels and configured to receive a corresponding data signal when a corresponding scan signal is transmitted to the pixels; a power supply controller for supplying a driving voltage to drive the pixels; and a controller for controlling the scan driver, the data driver, and the power supply controller, for generating an image data signal corresponding to each period of a plurality of periods, and for supplying the corresponding image data signal to the data driver. The power supply controller controls the driving voltage to block light emitting during a first view point image non-light emitting period and a second view point image non-light emitting period.

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Номер записи: 58

17-10-2013 дата публикации

DISPLAY DEVICE, PICTURE SIGNAL PROCESSING METHOD, AND PROGRAM

Номер: US20130271509A1

Автор: INOUE Yasuo, Kikuchi Ken, Kosugi Yoshihiro, Meguro Takeya, Mori Hideto, Osumi Toyo

Принадлежит:

There is provided a display device including a display unit having pixels, each of which includes a luminescence element that individually becomes luminous depending on a current amount and a pixel circuit for controlling a current applied to the luminescence element according to a voltage signal, where the pixels are arranged in a matrix pattern. The display device includes an average luminance calculator () for calculating average luminance for a predetermined period of the input picture signal, and also includes a luminous time setter () for setting an effective duty depending on the calculated average luminance by the average luminance calculator (), the effective duty regulating for each one frame a luminous time for which the luminescence element is luminous. The luminous time setter () sets the effective duty such that a luminescence amount regulated by a preset reference duty and possible maximum luminance of a picture signal. 117-. (canceled)18. A display device includinga processing unit, anda display unit having pixels, each of which includes a luminescence element that individually becomes luminous depending on a current amount and a pixel circuit for controlling a current applied to the luminescence element according to a voltage signal,scan lines which supply a selection signal for selecting pixels to be luminous to the pixels in a predetermined scanning cycle, anddata lines which supply to the pixels the voltage signal according to an input picture signal, the pixels, the scan lines, and the data lines arranged in a matrix pattern, calculate average luminance for a predetermined period of the input picture signal; and', 'set an effective duty depending on the calculated average luminance,, 'the processing unit configured tothe effective duty regulating for each one frame a luminous time for which the luminescence element is luminous.19. The display device according to claim 18 , wherein the processing unit is further configured to:hold a look-up table ...

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Номер записи: 59

24-10-2013 дата публикации

Display device

Номер: US20130278652A1

Автор: Yuji Nakahata

Принадлежит: Sony Corp

A display device includes: a panel portion, on which a plurality of sub-pixels with a discrete bus line form each individual pixel, the plurality of sub-pixels that form the individual pixel being sequentially arranged in a horizontal and a vertical direction, the panel portion displaying a two-dimensional image or a three-dimensional image by application of a signal via the bus line; and a filter portion, provided on a front surface of the panel portion, that alternately changes, for each of predetermined horizontal regions, a polarization state of light passing through the panel portion. A boundary of each of the horizontal regions of the filter portion is positioned within a range of a first sub-pixel of each of the plurality of sub-pixels. The first sub-pixel displays a different image when the two-dimensional image is displayed on the panel portion to when the three-dimensional image is displayed on the panel portion.

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Номер записи: 60

31-10-2013 дата публикации

Display device and method for controlling the same

Номер: US20130285889A1

Автор: Hiroshi Shirouzu, Tetsurou Nakamura

Принадлежит: Panasonic Corp

A display device includes an organic EL element and a capacitor. A driving transistor is connected to an anode of the organic EL element and passes a current to the organic EL element. The current corresponds to a voltage held in the capacitor. A first switch is between the capacitor and a data line, and the data line supplies the voltage to the capacitor. A voltage detector is connected to the data line for detecting an anode voltage applied to the organic EL element. A second switch is between the anode and the data line. A controller turns on the first switch, causes the organic EL element to emit light, and causes the voltage detector to detect the anode voltage by turning off the first switch and turning on the second switch while the organic EL element is emitting light.

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Номер записи: 61

31-10-2013 дата публикации

Organic light emitting display apparatus and method of inspecting the same

Номер: US20130285996A1

Автор: Ga-Young Kim, Guang-Hai Jin, Jae-Beom Choi, Jee-Hoon Kim, June-Woo Lee, Kwan-Wook Jung, Seong-Jun Kim, Sung-Soo Choi

Принадлежит: Samsung Display Co Ltd

An organic light emitting display apparatus and a method of easily inspecting the apparatus to determine whether an electrical failure occurs are disclosed. The organic light emitting display apparatus includes a plurality of pixels each including a pixel electrode, an intermediate layer including an organic emission layer, and an opposite electrode, pluralities of scan lines and data lines corresponding to the plurality of pixels, first power supply lines connected to the plurality of pixels and extending in a first direction; second power supply lines connected to the first power supply lines, and a controller that simultaneously supplies control signals to the plurality of pixels, and includes a plurality of control lines and a common line. The common line is connected to a first end of each of the plurality of control lines and is separated from a second, opposing end of each of the plurality of control lines.

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Номер записи: 62

31-10-2013 дата публикации

System and method for compensation of non-uniformities in light emitting device displays

Номер: US20130286055A1

Автор: Arokia Nathan, Corbin Church, Gholamreza Chaji, Peyman Servati, Richard I-Heng Huang, Stefan Alexander

Принадлежит: Ignis Innovation Inc

A system and method for operating a display at a constant luminance even as some of the pixels in the display are degraded over time. Each pixel in the display is configured to emit light when a voltage is supplied to the pixel's driving circuit, which causes a current to flow through a light emitting element. Degraded pixels are compensated by supplying their respective driving circuits with greater voltages. The display data is scaled by a compression factor less than one to reserve some voltage levels for compensating degraded pixels. As pixels become more degraded, and require additional compensation, the compression factor is decreased to reserve additional voltage levels for use in compensation.

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Номер записи: 63

07-11-2013 дата публикации

DISPLAY DEVICE, METHOD OF DRIVING DISPLAY DEVICE, AND ELECTRONIC APPARATUS

Номер: US20130293527A1

Автор: Minami Tetsuo

Принадлежит: SONY CORPORATION

A display device includes pixel circuits and a scanning line driving circuit that supplies control signals to the pixel circuits through scanning lines. The scanning line driving circuit generates a control signal that transitions between a reference potential and a control potential, with the control potential being altered dependent upon a temperature condition. 1. A display device comprising:a plurality of pixel circuits; anda scanning line driving circuit that supplies control signals to the plurality of pixel circuits through scanning lines, the scanning line driving circuit generating a control signal that transitions between a reference potential and a control potential, the control potential being altered dependent upon a temperature condition.2. The display device according to claim 1 , wherein altering the control potential reduces differences in a transition of the control signal from the reference potential to the control potential that would occur with changes in the temperature condition.3. The display device according to claim 2 , wherein reducing differences in the transition comprises reducing differences in a voltage rising period of the control signal as it transitions between the reference potential and the control potential.4. The display device according to claim 2 , wherein the control potential increases as operating temperature increases to reduce differences in the transition of the control signal from the reference potential to the control potential that would occur with the operating temperature increases.5. The display device according to claim 1 , wherein the scanning line driving circuit includes a voltage supply circuit that supplies the control potential claim 1 , and an output buffer that generates the control signal by switching between the reference potential and the control potential.6. The display device according to claim 5 , wherein the voltage supply circuit includes at least one circuit element having a resistive value that ...

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Номер записи: 64

14-11-2013 дата публикации

LUMINESCENT MATERIAL, AND ORGANIC LIGHT-EMITTING ELEMENT, WAVELENGTH-CONVERTING LIGHT-EMITTING ELEMENT, LIGHT-CONVERTING LIGHT-EMITTING ELEMENT, ORGANIC LASER DIODE LIGHT-EMITTING ELEMENT, DYE LASER, DISPLAY DEVICE, AND ILLUMINATION DEVICE USING SAME

Номер: US20130303777A1

Автор: Fujita Yoshimasa, Itoh Akinori, Itoh Tetsuji, Ogata Hidenori, Ohe Masahito, Okamoto Ken, Yamada Makoto

Принадлежит: SHARP KABUSHIKI KAISHA

A luminescent material includes a transition metal complex which comprises any one of Ir, Os, and Pt as a central metal; and at least one of a carbene ligand and a silylene ligand. The carbene ligand includes a boron atom in a skeleton thereof. The carbene ligand is neutral or monoanionic. The carbene ligand is monodentate, bidentate, or tridentate. The silylene ligand includes a boron atom in a skeleton thereof. The silylene ligand is neutral or monoanionic. The silylene ligand is monodentate, bidentate, or tridentate. 1. A luminescent material comprising:a transition metal complex, wherein the transition metal complex comprises:any one of Ir, Os, and Pt as a central metal; andat least one of a carbene ligand and a silylene ligand, wherein the carbene ligand includes a boron atom in a skeleton thereof, wherein the carbene ligand is neutral or monoanionic, wherein the carbene ligand is monodentate, bidentate, or tridentate, wherein the silylene ligand includes a boron atom in a skeleton thereof, wherein the silylene ligand is neutral or monoanionic, wherein the silylene ligand is monodentate, bidentate, or tridentate.7. The luminescent material according to claim 1 ,wherein the transition metal complex is a tris complex in which three bidentate ligands are coordinated, andwherein the amount of a mer (meridional) isomer contained in the transition metal complex is greater than that of a fac (facial) isomer.8. An organic light-emitting element comprising:at least one organic layer that includes a light-emitting layer; anda pair of electrodes between which the organic layer is interposed,wherein the organic layer includes a transition metal complex,wherein the transition metal complex comprises:any one of Ir, Os, and Pt as a central metal; andat least one of a carbene ligand and a silylene ligand, wherein the carbene ligand includes a boron atom in a skeleton thereof, wherein the carbene ligand is neutral or monoanionic, wherein the carbene ligand is monodentate, ...

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Номер записи: 65

28-11-2013 дата публикации

SEMICONDUCTOR DEVICE AND METHOD OF DRIVING THE SEMICONDUCTOR DEVICE

Номер: US20130314304A1

Автор: Kimura Hajime, Tanada Yoshifumi

Принадлежит: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Display irregularities in light emitting devices, which develop due to dispersions per pixel in the threshold value of TFTs for supplying electric current to light emitting elements, are obstacles to increasing the image quality of the light emitting devices. An electric potential in which the threshold voltage of a TFT () is either added to or subtracted from the electric potential of a reset signal line () is stored in capacitor means (). A voltage, in which the corresponding threshold voltage is added to an image signal, is applied to a gate electrode of a TFT (). TFTs within a pixel are disposed adjacently, and dispersion in the characteristics of the TFTs does not easily develop. The threshold value of the TFT () is thus cancelled, even if the threshold values of the TFTs () differ per pixel, and a predetermined drain current can be supplied to an EL element (). 1. (canceled)2. A semiconductor device comprising:a light-emitting element;a first transistor;a second transistor;a third transistor; anda capacitor,wherein one of a source and a drain of the first transistor is electrically connected to the light-emitting element,wherein a first electrode of the capacitor is electrically connected to a gate of the first transistor,wherein a second electrode of the capacitor is electrically connected to one of a source and a drain of the second transistor,wherein one of a source and a drain of the third transistor is electrically connected to the gate of the first transistor, andwherein the one of the source and the drain of the third transistor is electrically connected to a gate of the third transistor.3. The semiconductor device according to claim 2 ,wherein the other of the source and the drain of the first transistor is electrically connected to a first line,wherein the other of the source and the drain of the second transistor is electrically connected to a second line, andwherein the other of the source and the drain of the third transistor is electrically ...

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Номер записи: 66

05-12-2013 дата публикации

DISPLAY DEVICE, METHOD FOR DRIVING THE SAME, AND ELECTRONIC APPARATUS

Номер: US20130320847A1

Автор: Asano Mitsuru, Iida Yukihito, Uchino Katsuhide

Принадлежит: SONY CORPORATION

A display device including a pixel array unit having a matrix of pixels each configured such that an anode electrode of an organic electroluminescent element is connected to a source electrode of a drive transistor, a gate electrode of the drive transistor is connected to a source or drain electrode of a writing transistor, and a storage capacitor is connected between the gate and source electrodes of the drive transistor, scanning lines and power supply lines for individual pixel rows, and signal lines for individual pixel columns. A video signal reference potential is supplied to the signal lines for a period during which a scanning signal is supplied to the scanning lines during driving of pixels in a preceding row. During threshold correction for the drive transistor in a current pixel, the video signal reference potential and a potential of the cathode electrode of the organic electroluminescent element are equal. 16-. (canceled)7. A display device comprising a pixel array unit having pixels arranged in a matrix , each pixel having a circuit configuration including an electro-optical element having a first electrode and a second electrode , a transistor , a first element , and a second element , wherein:the first element has a first wiring and a second wiring overlapped with the first wiring partly,the second element has a third wiring and a forth wiring overlapped with the third wiring partly,the first wiring and the third wiring are disposed in a first layer,the second wiring and the forth wiring are disposed in a second layer which is different with the first layer, andthe second wiring is connected to the third wiring via a fifth wiring in a third layer witch is upper than the first layer and the second layer.8. The display device according to claim 7 , further comprising a first insulating film disposed between the first layer and the second layer claim 7 , and a second insulating film disposed between the second layer and the third layer claim 7 , wherien ...

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Номер записи: 67

05-12-2013 дата публикации

Pixel and organic light emitting display device using the same

Номер: US20130321376A1

Автор: Yong-Jae Kim, Yong-sung Park

Принадлежит: Samsung Display Co Ltd

A pixel and an organic light emitting display device using the same, which can improve display quality, are provided. An organic light emitting display device includes pixels, an emission control line, an initial power supply unit, a scan driver and a data driver. The pixels are at intersection portions of scan lines and data lines. The emission control line is commonly coupled to the pixels. The initial power supply unit is commonly coupled to gate electrodes of one or more transistors included in each of the pixels, and supplies a first voltage during a first period, a second voltage lower than the first voltage during a second period, and a third voltage higher than the first voltage during a third period in one frame period. The scan driver drives the scan lines and the emission control line. The data driver drives the data lines.

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Номер записи: 68

05-12-2013 дата публикации

PIXEL CIRCUIT, DISPLAY DEVICE, AND METHOD OF DRIVING PIXEL CIRCUIT

Номер: US20130321383A1

Автор: Uchino Katsuhide, Yamamoto Tetsuro, Yamashita Junichi

Принадлежит: SONY CORPORATION

A pixel circuit, display device, and method of driving a pixel circuit enabling source-follower output with no deterioration of luminance even with a change of the current-voltage characteristic of the light emitting element along with elapse, enabling a source-follower circuit of n-channel transistors, and able to use an n-channel transistor as an EL drive transistor while using current anode-cathode electrodes, wherein a source of a TFT as a drive transistor is connected to an anode of a light emitting element , a drain is connected to a power source potential VCC, a capacitor C is connected between a gate and source of the TFT , and a source potential of the TFT is connected to a fixed potential through a TFT as a switching transistor. 1. (canceled)2. A display device comprising a control circuit and a plurality of pixel circuits arranged in a matrix ,wherein each of the pixel circuits includes:an electro-optic element,a capacitor configured to store a voltage corresponding to an image signal,a drive transistor configured to control a current flow of a current path from a power supply line to the electro-optic element, in response to the voltage stored in the capacitor,a first transistor configured to write the image signal from a data line,a second transistor and a third transistor arranged within the current path between the power supply line and the electro-optic element, and configured to switch the current flow of the current path, anda fourth transistor connected to the capacitor and configured to apply a predetermined potential to the capacitor.3. The display device a according to the claim 2 , wherein the second transistor and the third transistor in one of the pixel circuits are configured to be switched at the same timing.4. The display device a according to the claim 3 , wherein a control node of the second transistor and a control node the third transistor in the one of the pixel circuits are configured to receive a control signal of the same timing.5 ...

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Номер записи: 69

12-12-2013 дата публикации

Method of Driving Display Device

Номер: US20130328499A1

Автор: Jun Koyama

Принадлежит: Semiconductor Energy Laboratory Co Ltd

An active matrix type EL display device is provided, which is capable of suppressing the unevenness of luminance display due to the unevenness of the characteristics of TFTs which constitute pixels, or due to variations in the environmental temperature at which the display device is used. The active matrix type EL display is driven by a time gray scale method, and is capable of keeping the drain current of each of its EL driving TFTs constant by operating each of the EL driving TFTs in a saturation region in an ON state. Accordingly, constant current can be made to flow in each of the EL elements, whereby it is possible to provide an active matrix type EL display device with accurate gray scale display and high image quality.

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Номер записи: 70

19-12-2013 дата публикации

Display apparatus and control method

Номер: US20130335388A1

Автор: Gae-Youn Kim, Jun-Ho Jung, Sang-Hoon Lee, Sang-un Yun, Tae-young HUH

Принадлежит: SAMSUNG ELECTRONICS CO LTD

A display apparatus and a control method which displays an image based on an image signal transmitted from the outside are provided. The display apparatus includes a display which generates light in a plurality of colors and displays an image; a signal receiver which receives an image signal; a signal processor which processes the received image signal in order to display an image based on the image signal; and a controller which analyzes the image signal received by the signal receiver and obtains color reproduction feature information of the image signal, and changes each color distribution of light generated by the display to display an image in a color which corresponds to the color reproduction feature information obtained, based on the image signal.

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Номер записи: 71

19-12-2013 дата публикации

Organic light emitting display and method of driving the same

Номер: US20130335395A1

Автор: Eun-Joo Cho, Kun-Won LEE, Zhi-Feng ZHAN

Принадлежит: Samsung Display Co Ltd

An organic light emitting display includes pixels positioned at intersections of scan lines, emission control lines, control lines, and data lines, wherein gate voltages of driving transistors of the pixels are initialized by a first or second initialization power supply and an initialization power supply generating unit for supplying the first initialization power supply to pixels positioned in odd horizontal lines via a first power supply line and for supplying the second initialization power supply to pixels positioned in even horizontal lines via a second power supply line. The first initialization power supply and the second initialization power supply repeat a high voltage and a low voltage with different phases.

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Номер записи: 72

19-12-2013 дата публикации

DISPLAY APPARATUS

Номер: US20130335399A1

Автор: TSUGE Hitoshi

Принадлежит: Panasonic Corporation

The display apparatus has a plurality of arrayed pixel circuits. Each of the pixel circuits has a current light emitting device; a driving transistor supplying current to the current light emitting device; a first capacitor having a first terminal connected with a gate of the driving transistor; a second capacitor connected between a second terminal of the first capacitor and a source of the driving transistor; a first switch applying a reference voltage to a node at which the first capacitor and the second capacitor are connected; a second switch supplying an image signal voltage to the gate of the driving transistor, and a third switch supplying an initialization voltage to the source of the driving transistor. 1. A display apparatus having a plurality of arrayed pixel circuits , each of the pixel circuits comprising:a current light emitting device;a driving transistor supplying current to the current light emitting device;a first capacitor having a first terminal connected with a gate of the driving transistor;a second capacitor connected between a second terminal of the first capacitor and a source of the driving transistor;a first switch applying a reference voltage to a node at which the first capacitor and the second capacitor are connected;a second switch supplying an image signal voltage to the gate of the driving transistor;a third switch supplying an initialization voltage to the source of the driving transistor, anda fourth switch configured to short circuit the node of the first and second capacitor and the gate of the driving transistor or apply the reference voltage to the gate of the driving transistor.2. A display apparatus of claim 1 , further comprising:a fifth switch configured to cut off a current flow between the source of the driving transistor and the current light emitting device.3. A display apparatus of claim 1 , further comprising:a fifth switch configured to cut off a current flow between a drain of the driving transistor and a power ...

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Номер записи: 73

19-12-2013 дата публикации

DISPLAY DEVICE AND CONTROL METHOD THEREFOR

Номер: US20130335456A1

Автор: MATSUI Masafumi, ONO Shinya

Принадлежит: Panasonic Corporation

A display device having pixels in a matrix where the pixels compose at least two drive blocks each including at least two pixel rows, includes a first signal line and a second signal line disposed in a pixel column direction. The first signal line is disposed in one of the left and right sides of the pixels of the corresponding column, and the second signal line is disposed in the other of the sides. Each of the pixels includes an organic EL element and a current control unit. Pixels in a kth drive block are connected to the first signal line via a first connecting line, and pixels in a (k+1)th drive block are connected to the second signal line via a second connecting line. The first signal line is disposed without crossing the second connecting line, and the second signal line is disposed without the first connecting line. 1. A display device including pixels arranged in a matrix having m rows and n columns , m being an integer greater than or equal to 4 , and n being an integer greater than or equal to 1 , the display device comprising:a first signal line and a second signal line that are disposed, in a column direction, corresponding to every m pixels that correspond to the respective n columns in the matrix, the first signal line and the second signal line being for applying, to the pixels, a signal voltage which determines luminance of the pixels, and the m pixels being included in the pixels,a first power source line and a second power source line; anda scanning line disposed in each of the rows,wherein the pixels compose at least two drive blocks each of which includes at least two of the rows, a light-emitting element that includes terminals, one of the terminals being connected to the second power source line, and the light-emitting element emitting light according to a flow of a signal current corresponding to the signal voltage; and', 'a current control unit connected to the first power source line and the other of the terminals of the light-emitting ...

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Номер записи: 74

19-12-2013 дата публикации

DISPLAY UNIT, IMAGE PROCESSING UNIT, AND DISPLAY METHOD

Номер: US20130335457A1

Автор: ARAKI SHOJI, Asano Mitsuyasu, INOUE Yasuo, Nakagawa Makoto, SHIMIZU HIDEHISA, Yano Tomoya

Принадлежит: SONY CORPORATION

An image processing unit includes: a gain calculating section obtaining, based on first luminance information for each pixel, a first gain, in which the first gain is configured to increase with an increase in pixel luminance value in a range where the pixel luminance value is equal to or larger than a predetermined luminance value, and in which the pixel luminance value is derived from the first luminance information; and a determination section determining, based on the first luminance information and the first gain, second luminance information for each of the pixels. 1. A display unit , comprising:a gain calculating section obtaining, based on first luminance information for each pixel, a first gain, the first gain being configured to increase with an increase in pixel luminance value in a range where the pixel luminance value is equal to or larger than a predetermined luminance value, and the pixel luminance value being derived from the first luminance information;a determination section determining, based on the first luminance information and the first gain, second luminance information for each of the pixels; anda display section performing display based on the second luminance information.2. The display unit according to claim 1 , whereinthe gain calculating section obtains the first gain based on a gain function that represents a relationship between the pixel luminance value and the first gain, andthe first gain is configured to increase at a predetermined gradient with the increase in the pixel luminance value that is equal to or larger than the predetermined luminance value, in the gain function.3. The display unit according to claim 1 , wherein the predetermined luminance value is configured to increase with an increase in average of the first luminance information in a frame image.4. The display unit according to claim 1 , wherein the pixel luminance value corresponds to a value of Value information in an HSV color space.5. The display unit according ...

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Номер записи: 75

26-12-2013 дата публикации

Display device, electro-optical element driving method and electronic equipment

Номер: US20130341628A1

Автор: Masatsugu Tomida

Принадлежит: Sony Corp

The present invention permits a capacitance value of an electro-optical element such as organic EL element to be arbitrarily set without changing the light extraction efficiency of a pixel. That is, the present invention permits a capacitance value Coled of an organic EL element ( 21 ) to be arbitrarily set by adjusting the light emission area of the organic EL element ( 21 ) without changing the light extraction efficiency of a pixel ( 20 ) in an organic EL display device. The organic EL display device has the pixels ( 20 ) arranged in a matrix form. A light extraction opening ( 56 ) is formed on the surface of the pixel with a light-shielding film (black matrix) ( 57 ). The light extraction opening ( 56 ) has an opening area smaller than the light emission area of the organic EL element ( 21 ).

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Номер записи: 76

26-12-2013 дата публикации

Electronic Display Device

Номер: US20130342521A1

Автор: Duncan Jon, Griffiths Bryn

Принадлежит:

In a display device () resembling a bottle and having electroluminescent display segments () resembling a spectrum analyser in the place of a label, the display segments are arranged to produce different display effects in response to differing sound levels as detected by a microphone (). A control circuit () for the display segments detects an average sound level and adjusts the power supplied to the microphone in response thereto. The power supply adjustment employs a pulse width modulation technique, the duty cycle of which is varied in response to an average sound signal, averaged over a predetermined time period. 1. A method of producing a display in response to incoming acoustic signals comprising feeding the output of a sound transducer to control a circuit for controlling the display in response to changes in the output , detecting the average amplitude level of the output of the sound transducer and automatically adjusting the power supplied to the sound transducer to compensate for variations in amplitude of the incoming sounds.2. A method according to claim 1 , wherein the power supplied to the sound transducer is effected by a pulse width modulation technique claim 1 , the duty cycle of which is varied in response to an average sound signal claim 1 , averaged over a predetermined time period.3. A method according to claim 2 , wherein a plurality of threshold sound levels are set claim 2 , with a corresponding percentage change in the duty cycle of the pulse width modulation being effected in each case.4. A method according to comprising shutting down the control circuit if no signal is detected for a period of time.5. A method according to claim 4 , wherein claim 4 , after shutting down claim 4 , a regular check is undertaken to see if there is a signal and claim 4 , if there is claim 4 , the circuit is set into operation.6. A display device comprising a display member having one or more display segments which are arranged to produce different display ...

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Номер записи: 77

26-12-2013 дата публикации

Stage Circuit and Organic Light Emitting Display Device Using the Same

Номер: US20130342584A1

Автор: Dong-Hwi Kim, Hwa-Young Song, Ji-Hye Kim, Min-Kyu Woo

Принадлежит: Samsung Display Co Ltd

An organic light emitting display device having a stage circuit capable of creating a scan signal and a light emitting control signal. The stage circuit includes a control unit controlling a first node and a second node corresponding to signals of a first input terminal, a third input terminal, and a fourth input terminal, a first output unit supplying a light emitting control signal to a second output terminal corresponding to voltages at the first node and the second node, and a second output unit supplying a scan signal having different polarity than that of the light emitting control signal to a first output terminal corresponding to a signal of a second input terminal and voltages at the first node and the second node.

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Номер записи: 78

02-01-2014 дата публикации

Display panel for preventing static electricity, method for manufacturing the same, and display device including the display panel for preventing static electricity

Номер: US20140001966A1

Автор: Yeon-Je Cho

Принадлежит: Samsung Display Co Ltd

A display panel, a manufacturing method of the display panel, and a display device including the display panel are provided. The display panel includes: a substrate; a display unit on the substrate and including a plurality of pixels for displaying an image according to a video signal; a power supply wire on the substrate, coupled to the plurality of pixels, and configured to transmit a driving voltage for driving the plurality of pixels; and a dummy wire on the substrate, separated from the display unit and the power supply wire, and coupled to a ground electrode or a power supply unit for supplying the driving voltage.

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Номер записи: 79

23-01-2014 дата публикации

Organic Light Emitting Diode Display Device for Sensing Pixel Current and Pixel Current Sensing Method Thereof

Номер: US20140022289A1

Автор: Bum-Sik Kim, Ji-Eun Lee, Kil-Hwan Oh, Seung-Tae Kim, Won-Kyu Ha

Принадлежит: LG Display Co Ltd

The present invention relates to an organic light emitting diode display device capable of sensing driving current of each pixel with a simple configuration to compensate for a luminance deviation between pixels and a pixel current sensing method thereof. The organic light emitting diode display device includes a display panel including 2N (N being a natural number) pixels that share a reference line though which a reference signal is supplied and are respectively connected to 2N data lines through which data signals are applied, and a data driver for driving the 2N pixels sharing the reference line in a time division manner through the data lines, sensing currents of the time-division-driven 2N pixels as voltages through the shared reference line and outputting the sensed currents, in a sensing mode.

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Номер записи: 80

30-01-2014 дата публикации

DISPLAY UNIT

Номер: US20140028642A1

Автор: Seo Yuki, Taneda Takayuki, Uchino Katsuhide, Yamamoto Tetsuro

Принадлежит: SONY CORPORATION

A display unit with which diffraction reflection is able to be decreased is provided. The display unit includes a display section having an organic EL device and a pixel circuit for every pixel. The pixel circuit has a first transistor for writing a video signal and a second transistor for driving the organic EL device based on the video signal written by the first transistor. The second transistor has a gate, a source and a drain. The organic EL device has an anode, an organic layer, and a cathode. An upper face of the source or the drain is formed at least in a region opposed to the anode or the cathode. 1. (canceled)2. A display unit comprising a display section having an organic EL device and a pixel circuit for every pixel ,wherein the second transistor has a gate, a source, and a drain,', 'the organic EL device has a first electrode, an organic layer, and a second electrode,', 'the source or the drain at least partially overlaps the first electrode or the second electrode, and, 'the pixel circuit has a first transistor configured to write a video signal and a second transistor configured to drive the organic EL device based on the video signal written by the first transistor,'}at least a part of the source or the drain has a curve shape.3. The display unit according to claim 2 , wherein the first transistor has a gate claim 2 , a source claim 2 , and a drain claim 2 , andthe curve shape of the second transistor is bigger than a curve shape of the first transistor.4. The display unit according to claim 2 , wherein the gate of the second transistor is bigger than the source or the drain of the second transistor.5. The display unit according to claim 2 , further comprising a protective film disposed on the second electrode claim 2 ,wherein the protective film covers the source or the drain of the second transistor.6. The display unit according to claim 5 , wherein the protective film completely covers the second electrode.7. The display unit according to claim 5 ...

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Номер записи: 81

30-01-2014 дата публикации

Pixel and organic light emitting display using the same

Номер: US20140028647A1

Автор: Min-Kyu Woo

Принадлежит: Samsung Display Co Ltd

A pixel capable of stably compensating for the threshold voltage of a driving transistor is disclosed. In one aspect, the pixel includes an organic light emitting diode (OLED), a first transistor for controlling an amount of current supplied from a first power supply coupled to a second node to the OLED to correspond to a voltage applied to a third node, and a second transistor coupled between the second node and a first node and turned on when a control signal is supplied to a control line. The pixel also includes a third transistor coupled between the third node and a reference power supply and turned on when the control signal is supplied, a first capacitor coupled between the first node and the first power supply, and a second capacitor coupled between the first node and the third node.

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Номер записи: 82

30-01-2014 дата публикации

APPARATUS AND METHOD FOR COMPENSATING IMAGE OF DISPLAY DEVICE

Номер: US20140028859A1

Автор: Jun Byung-Geun, Kim In-Hwan, Kim Min-Cheol

Принадлежит: Samsung Display Co., Ltd.

An apparatus and method for compensating an image of a display device are disclosed. The image compensation apparatus of a display device comprises a scatterometer configured to analyze luminance of a display image according to a test initialization voltage and a test data voltage applied to a plurality of pixels and to measure a deviation of a threshold voltage of a driving transistor of the plurality of pixels; a voltage controller configured to divide the display panel into a predetermined area according to a deviation of a threshold voltage of the driving transistor and to calculate different initialization voltages that initialize driving of pixels included in the area on a predetermined area basis; and an initialization voltage supplier configured to apply a corresponding initialization voltage calculated in the voltage controller to the plurality of pixels included in the predetermined area. 1. An image compensation apparatus of a display device comprising a display panel that displays an image according to a data signal , the image compensation apparatus comprising:a scatterometer configured to analyze luminance of a display image according to a test initialization voltage and a test data voltage applied to a plurality of pixels included in the display panel and to measure a deviation of a threshold voltage of a driving transistor of the plurality of pixels;a voltage controller configured to divide the display panel into a predetermined area according to a deviation of a threshold voltage of the driving transistor and to calculate different initialization voltages that initialize driving of a plurality of pixels included in the area on a predetermined area basis; andan initialization voltage supplier configured to apply a corresponding initialization voltage calculated in the voltage controller to a plurality of pixels included in the predetermined area.2. The image compensation apparatus of claim 1 , further comprising a data store configured to store ...

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Номер записи: 83

06-02-2014 дата публикации

Display unit, drive circuit, driving method, and electronic apparatus

Номер: US20140035797A1

Автор: Seiichiro Jinta

Принадлежит: Sony Corp

A display unit includes: a pixel circuit including a display element, a first transistor having a gate and a source, and a capacitor inserted between the gate and the source, the first transistor supplying a current to the display element; and a drive section driving the pixel circuit, through sequentially performing first and second driving operations, the first driving operation allowing the drive section to apply a pixel voltage to a first terminal and allowing a second terminal to be at a first voltage, the pixel voltage determining luminance of the display element, the first and second terminals being one and the other of the gate and the source of the first transistor, respectively, and the second driving operation allowing the second terminal to be at a second voltage, through applying the pixel voltage to the first terminal and allowing a current to flow through the first transistor.

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Номер записи: 84

06-02-2014 дата публикации

Signal processing circuit, display unit, electronic apparatus, and signal processing method

Номер: US20140035962A1

Автор: Gaku Izumi, Seiichiro Jinta

Принадлежит: Sony Corp

A signal processing circuit performs a correction on a first image signal to generate a noise-like pattern with regularity in an image, and thereby to generate a second image signal. Therefore, even if stripes or luminance unevenness is caused in a display image in the case where the first image signal is input into a display panel, a pattern making the stripes and the luminance unevenness less visible is allowed to be superimposed on the display image. Moreover, a pattern superimposed on the display image is the noise-like pattern with regularity which is obtainable without measuring light emission characteristics of the display panel. Therefore, it is not necessary to measure the light emission characteristics of the display panel to superimpose the above-described pattern on the display image.

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Номер записи: 85

06-02-2014 дата публикации

DISPLAY PANEL, DISPLAY APPARATUS, AND ELECTRONIC SYSTEM

Номер: US20140035965A1

Автор: Tagami Satoshi, Toyomura Naobumi, Yamashita Junichi

Принадлежит: SONY CORPORATION

A color display unit includes pixels arranged in matrix form. Display pixel units are formed from multiple pixels, one of each of the display colors, grouped together across multiple rows. Drive units are formed by multiple rows of display pixel units that are connected to a common power supply line. Common write scanning lines are provided, where the number of common write scanning lines per drive unit equals the number of rows of pixels that are included in a display pixel unit. Each common write scanning line is connected to every pixel of at least one given color in its respective drive unit. Within a single drive unit, every pixel of a given color has a transistor whose layout orientation is the same as the layout orientation of a corresponding transistor in every other pixel of that given color. 1. A display unit comprising:a plurality of write scanning lines;a plurality of signal lines; and a display element,', 'a first transistor configured to sample a potential carried on one of the plurality of signal lines when a scanning pulse is applied to one of the plurality of write scanning lines, which is connected to the first transistor,', 'a capacitor with a first terminal configured to hold the potential sampled by the first transistor, and', 'a second transistor configured to supply a drive current to the display element, the magnitude of the drive current corresponding to a voltage between the first terminal of the capacitor and a second terminal of the capacitor,, 'a plurality of pixel circuits disposed in a matrix form comprising rows and columns of pixel circuits, each of the plurality of pixel circuits includingwherein each of the plurality of pixel circuits corresponds to one of N display colors and the plurality of pixel circuits are grouped into display pixel units each comprising N of the plurality of pixel circuits corresponding respectively to the N display colors, which are contiguously disposed in R contiguous rows, 2≦R≦N, andthe first transistor ...

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Номер записи: 86

13-02-2014 дата публикации

DISPLAY DEVICE AND ELECTRONIC EQUIPMENT

Номер: US20140043218A1

Автор: Tanikame Takao, Uchino Katsuhide, Yamashita Junichi

Принадлежит: SONY CORPORATION

A display device is disclosed. The display device includes: a pixel array unit and a driving unit which drives the pixel array unit. The pixel array unit includes rows of first scanning lines and second scanning lines, columns of signals, pixels in a matrix state arranged at portions where the scanning lines and the signal lines cross each other and power supply lines and ground lines supplying power to respective pixels. The driving unit includes a first scanner performing line-sequential scanning to pixels by each row by supplying a first control signal to each first scanning line sequentially, a second scanner supplying a second control signal to each second scanning line sequentially so as to correspond to the line-sequential scanning and a signal selector supplying a video signal to rows of signal lines so as to correspond to the line-sequential scanning. 1. A display device , comprising: a light emitting element;', 'a sampling unit;', 'a pixel capacitor; and, 'a plurality of pixels in a matrix, at least one of the plurality of pixels comprisinga drive unit configured to allow a drive current to flow to the light emitting element according to an image signal stored in the pixel capacitor,wherein a feedback current is configured to flow to the pixel capacitor via the drive unit while the sampling unit supplies a potential corresponding to the image signal from a signal line, and before the drive unit allows the drive current to flow, andwherein the drive unit has a transistor whose size ratio W/L is at least 0.5, where W is a channel width and L is a channel length.2. The display device according to claim 1 , wherein the feedback current is configured to flow to the pixel capacitor via the transistor before the drive unit allows the drive current to flow.3. The display device according to claim 2 , wherein the pixel capacitor pixel capacitor is configured to store a voltage dependent on a property data of the transistor before the drive unit allows the drive ...

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Номер записи: 87

20-02-2014 дата публикации

Display device and electronic apparatus

Номер: US20140049530A1

Автор: Junichi Yamashita, Katsuhide Uchino, Tetsuro Yamamoto

Принадлежит: Sony Corp

A transistor connected to a power source for driving a light-emitting element driving transistor and a transistor setting to a predetermined voltage a source voltage of the light-emitting element driving transistor are commonly controlled by a control signal that takes one of three levels.

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Номер записи: 88

20-02-2014 дата публикации

Organic Light Emitting Diode Display and Method of Driving the Same

Номер: US20140049531A1

Автор: Sang Hyeon Kwak

Принадлежит: LG Display Co Ltd

An OLED display device is provided. The OLED display device may include a first capacitor connected between a data line and a first node, a first transistor connected to the first node and a second node, an OLED connected between a low-level source voltage terminal and a third node, a second transistor connected to the second and third nodes, a driving transistor, and a second capacitor. The driving transistor may have a gate connected to the first node, a drain connected to the second node, and a source connected to a high-level source voltage terminal. One end of the second capacitor may receive a control signal, and the other end of the second capacitor may be connected to the first node.

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Номер записи: 89

20-02-2014 дата публикации

DISPLAY APPARATUS AND DISPLAY-APPARATUS DRIVING METHOD

Номер: US20140049570A1

Автор: Jinta Seiichiro, Tanikame Takao

Принадлежит: SONY CORPORATION

Disclosed herein is a driving method and display apparatus, the display apparatus including light emitting units, scan lines, data lines, a driving circuit provided for each of the light emitting units to serve as a circuit having a signal writing transistor, a device driving transistor, a capacitor and a first switch circuit, and a light emitting device. 2. The display apparatus according to claim 1 , wherein the plurality of light emitting units include a red-light emitting unit claim 1 , a green-light emitting unit claim 1 , a blue-light emitting unit claim 1 , and white-light emitting unit.3. The display apparatus according to claim 1 , wherein the plurality of light emitting units include a red-light emitting unit claim 1 , a green-light emitting unit claim 1 , a blue-light emitting unit claim 1 , and yellow-light emitting unit.4. The display apparatus according to claim 1 , wherein said light emitting unit is an organic electro luminescence light emitting device.5. The display apparatus according to claim 1 ,wherein said light emitting unit has an anode electrode, a light emitting layer, and a cathode electrode, and is provided on a first insulation layer covering said plurality of driving circuits, andwherein said cathode electrode is provided on a second insulation layer which is arranged on said first insulation layer, and is connected to a second power-supply line via a first contact formed in said first insulation layer and a second contact formed in the second insulation layer.7. The display apparatus according to claim 6 , wherein the plurality of light emitting units include a red-light emitting unit claim 6 , a green-light emitting unit claim 6 , a blue-light emitting unit claim 6 , and white-light emitting unit.8. The display apparatus according to claim 6 , wherein the plurality of light emitting units include a red-light emitting unit claim 6 , a green-light emitting unit claim 6 , a blue-light emitting unit claim 6 , and yellow-light emitting unit ...

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Номер записи: 90

27-02-2014 дата публикации

IMAGE DISPLAY APPARATUS

Номер: US20140055431A1

Автор: Handa Tomoaki, Taneda Takayuki, Uchino Katsuhide

Принадлежит: SONY CORPORATION

The present invention provides an active matrix image display apparatus including an organic EL element capable of efficiently arranging a wiring pattern on an insulating substrate compared to the related art. The present invention provides a dummy region arranged at the outermost periphery of a display unit as a scanning line coupling region or a pitch conversion region. A power supply scanning line is commonly used by a pixel circuit of an odd-numbered line and a pixel circuit of a following even-numbered line. 1. An image display apparatus , comprising:a plurality of pixel circuits arranged in a matrix form in a pixel region of a display unit;a plurality of output lines comprising first output lines and second output lines, where each of the plurality of output lines is connected to at least one of the plurality of pixels circuits and the second output lines are grouped into second-output-units, each second-output-unit comprising 2 or more second output lines that are connected to each other;an output line drive circuit configured to selectively introduce a first output signal severally to the first output lines and a second output signal severally to second-output-units,wherein the output line drive circuit is connected to the plurality of output lines by a output-line-connection wiring pattern formed on the insulating substrate, andwherein the output-line-connection wiring pattern comprises first connection lines and second connection lines arranged such that:each of the first connection lines corresponds to one of the first output lines and each respective first connection line is connected at a first end to a corresponding terminal of the output line drive circuit and at a second end to the first output line to which the respective first connection line corresponds, andeach of the second connection lines corresponds to one of the second-output-units and each respective second connection line is connected at a first end to a corresponding terminal of the ...

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Номер записи: 91

27-02-2014 дата публикации

ACTIVE-MATRIX DISPLAY DEVICE, AND ACTIVE-MATRIX ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE

Номер: US20140055441A1

Автор: Yumoto Akira

Принадлежит: SONY CORPORATION

An active-matrix display device employs current-programmed-type pixel circuits and performs the writing data to each of pixels on a line-by-line basis. The active-matrix display device having a matrix of current-programmed-type pixel circuits includes a data line driving circuit formed of m current driving circuits (CD) - to -m arranged-corresponding to respective data lines - to -m. The data line driving circuit (CD) - to -m holds image data (luminance data herein) in the form of voltage, and then converts the voltage of the image data into a current signal. The current signal is then fed to the data lines - to -m at a time. The image information is thus written on the pixel circuits 160.-. (canceled)61. A display device comprising:a pixel element for emitting light,a current line coupled to the pixel element,a driving circuit including a holding unit, a first transistor, a second transistor, a third transistor, a fourth transistor and a fifth transistor;the holding unit including a capacitor that holds luminance data corresponding to image information,the third transistor and the forth transistor being connected to the first transistor, andthe fifth transistor being connected to the holding unit;wherein the driving circuit is configured to operate such that:a reset voltage and the image information are written to the holding unit, via the fifth transistor and the second transistor, respectively, during a predetermined period,the forth transistor electrically connects a current node of the first transistor to a gate node of the first transistor,the third transistor switches current flow on and off from the first transistor to the current line, and set in an off state in at least a portion of the predetermined period, andthe first transistor transforms the luminance data stored in the holding unit as a voltage signal into a current signal, the current signal being supplied to the pixel element through the current line.62. The display device according to claim 61 , ...

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Номер записи: 92

27-02-2014 дата публикации

METHOD OF DRIVING PIXEL CIRCUIT, LIGHT EMITTING DEVICE, AND ELECTRONIC APPARATUS

Номер: US20140055508A1

Автор: ISHIGURO Hideto, YATABE Satoshi

Принадлежит: SEIKO EPSON CORPORATION

There is provided a method of driving a pixel circuit that includes a light emitting element; a driving transistor that is connected to the light emitting element in series; and a storage capacitor that is interposed between a gate of the driving transistor and a path, which is formed between the light emitting element and the driving transistor. 1. A method of driving a pixel circuit that includes: a light emitting element; a driving transistor that is connected to the light emitting element in series; and a storage capacitor that is interposed between a gate of the driving transistor and a path , which is formed between the light emitting element and the driving transistor , the method including:performing a first compensating operation of asymptotically causing a voltage of the storage capacitance to converge with a threshold voltage of the driving transistor by applying a reference electric potential to the gate of the driving transistor in a first period;performing a second compensating operation of asymptotically causing the voltage of the storage capacitance to converge with the threshold voltage of the driving transistor by applying a gray scale electric potential to the gate of the driving transistor, over a time duration variably set according to a gradation value, in a second period after the first period; andsupplying a driving current corresponding to the voltage of the storage capacitance to the light-emitting device in a third period after the second period,2. The method according to claim 1 , wherein the time duration of the second compensating operation is set so that the time duration of the second compensating operation is decreased in an inverse proportion to an increase in a change of a gate voltage of the driving transistor due to the application of the gray scale electric potential.3. The method according to claim 1 , wherein claim 1 , when the gradation value is lower than a predetermined value claim 1 , the time duration of the second ...

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Номер записи: 93

06-03-2014 дата публикации

INTEGRATED DRIVE CIRCUIT FOR MULTI-SEGMENT ELECTROLUMINESCENT DISPLAYS

Номер: US20140062987A1

Автор: Pietro Patrick D., Pietro William J., Savel Paul

Принадлежит:

An integrated drive circuit for multi-segment electroluminescent displays is provided. During a charging phase, the electroluminescent segments are charged by a common charge circuit, and partially discharged using separate discharge circuits associated with individual electroluminescent segments. A controller provides essentially independent control over the respective discharge circuits so, by the end of the charging phase, the EL segments can be charged to correspondingly different final voltages. Then during a discharging phase following the charging phase, the electroluminescent segments are completely discharged, thereby emitting an intensity of light that varies roughly in proportion to the final accumulated voltage. The controller can be pre-programmed with a spatial-temporal light pattern so that, using the disclosed integrated drive circuit, the electroluminescent display can be operated to generate rudimentary animations. 1. An integrated drive circuit for an electroluminescent display comprising at least one electroluminescent segment , the integrated drive circuit comprising:a charge circuit coupled to the electroluminescent segment, the charge circuit configured to transmit energy received from a power supply to the electroluminescent segment as a discrete sequence of charge pulses to accumulate a voltage across the electroluminescent segment; anda discharge circuit coupled to the electroluminescent segment and configured to dissipate the accumulated voltage by selectively forming a shunt path across the electroluminescent segment to drain energy stored in the electroluminescent segment.2. The integrated drive circuit of claim 1 , further comprising a controller configured to control the voltage across the electroluminescent segment by generating a charge control signal for the charge circuit and a discharge control signal for the discharge circuit.3. The integrated drive circuit of claim 2 , wherein the charge circuit is configured to generate and ...

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Номер записи: 94

06-03-2014 дата публикации

Systems and methods for controlling current in display devices

Номер: US20140063074A1

Автор: Paul Stephen Drzaic

Принадлежит: Apple Inc

The present disclosure relates generally systems and methods for controlling current provided to display devices. A method for controlling the current may include receiving drive current values associated with subpixels in a display and receiving information that corresponds to an application type being rendered on the display and/or an indication of image data being rendered on the display. The method may then include reducing at least some of the drive current values based at least in part on the application type. Alternatively, the method may include reducing the at least a portion of the image data corresponding to the at least some of the drive current values has substantially similar luminance and color values. The method may then include supplying the subpixels with drive currents that correspond to the drive current values.

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Номер записи: 95

13-03-2014 дата публикации

Shift register

Номер: US20140072092A1

Автор: Yong-Ho Jang

Принадлежит: LG Display Co Ltd

A shift register includes a plurality of stages for sequentially outputting A-scan pulses and B-scan pulses. At least one of the stages includes an A-sub-stage for controlling a voltage at an A-set node and a voltage at at least one A-reset node in response to an external A-control signal and generating an A-carry pulse based on the voltage at the A-set node, the voltage at the A-reset node and any one A-clock pulse, a B-sub-stage for controlling a voltage at a B-set node and a voltage at at least one B-reset node in response to an external B-control signal and generating a B-carry pulse based on the voltage at the B-set node, the voltage at the B-reset node and any one B1-clock pulse, and a scan output controller for generating a corresponding one of the A-scan pulses and a corresponding one of the B-scan pulses.

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Номер записи: 96

20-03-2014 дата публикации

Organic light emitting display and method of driving the same

Номер: US20140078031A1

Автор: Hwan-Soo Jang, Jin-Tae Jeong, Yang-Wan Kim

Принадлежит: Samsung Display Co Ltd

A method of driving an organic light emitting display includes dividing one frame into a plurality of subfields, setting a plurality of pixels to include first pixels positioned in odd horizontal lines and second pixels positioned in even horizontal lines, and setting pixels that realize low grayscales in an emission state in one of the plurality of subfields, such that the first pixels have emission states in different subfields than emission states of the second pixels, when the low grayscales are realized.

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Номер записи: 97

20-03-2014 дата публикации

ORGANIC ELECTROLUMINESCENCE DISPLAY PANEL AND DISPLAY DEVICE INCLUDING THE SAME

Номер: US20140078120A1

Автор: KIM Se Il, Koo Young Mo, Lee Sung Soo, SONG Ok Keun

Принадлежит: Samsung Display Co., Ltd.

An organic electroluminescence (EL) display panel includes a substrate, a thin film transistor on the substrate, an overcoat layer on the thin film transistor and containing an organic material, a first electrode on the overcoat layer, an organic light emitting layer on the first electrode, a second electrode on the organic light emitting layer, and a barrier layer between the overcoat layer and the first electrode and including a first region formed of a single layer and a second region formed of a multilayer. 1. An organic electroluminescence (EL) display panel comprising:a substrate;a thin film transistor on the substrate;an overcoat layer on the thin film transistor and comprising an organic material;a first electrode on the overcoat layer;an organic light emitting layer on the first electrode;a second electrode on the organic light emitting layer; anda barrier layer between the overcoat layer and the first electrode, and comprising a first region comprising a single layer and a second region comprising a multilayer.2. The display panel of claim 1 , wherein the first electrode comprises a transparent electrode claim 1 , and the second electrode comprises a reflective electrode.3. The display panel of claim 2 , further comprising a pixel defining layer on the barrier layer claim 2 , wherein the first region is disposed under a light emitting region in which the light emitting layer is exposed by the pixel defining layer.4. The display panel of claim 3 , wherein the second region is not located under the light emitting region.5. The display panel of claim 3 , further comprising a color filter located under the light emitting region and the barrier layer.6. The display panel of claim 1 , wherein the overcoat layer has a contact hole which overlaps the first electrode claim 1 , and the second region is located adjacently to the contact hole.7. The display panel of claim 6 , wherein the second region is located on an inner surface of a wall of the contact hole.8. The ...

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Номер записи: 98

27-03-2014 дата публикации

Method of operating an organic light emitting display device, and organic light emitting display device

Номер: US20140085170A1

Автор: Jong-Woong Park, Joo-hyung Lee, Won-Woo Jang

Принадлежит: Samsung Display Co Ltd

A method of operating an organic light emitting display device including a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel, wherein a first gamma voltage for the red, green and blue sub-pixels and a second gamma voltage for the white pixel are adjusted such that a sum of maximum luminances of the red, green and blue sub-pixels is substantially equal to a luminance of a white color displayed by the organic light emitting display device. With respect to a white portion of input data, a ratio of first data of the red, green and blue sub-pixels to second data of the white sub-pixel is adjusted based on a first accumulated driving amount of the red, green and blue sub-pixels and a second accumulated driving amount of the white sub-pixel.

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Номер записи: 99

27-03-2014 дата публикации

Display device and driving method thereof

Номер: US20140085322A1

Автор: HIDEO Yoshimura, Ji Gong Lee, Sang Jin PAK, Sang Kwon Ha

Принадлежит: Samsung Display Co Ltd

A display device includes a driver connected to a display panel and transmitting scan signals or data signals to the display panel, a frame memory connected to the driver, storing image data and transmitting at least some of the image data to the driver, and a controller connected to the driver and the frame memory, generating a control signal and transmitting the control signal to the driver or the frame memory, wherein each of the sub-fields includes an address period in which the scan signals are transmitted to the respective pixel rows, the controller transmits the control signal to the driver to transmit the scan signals to the pixel rows during a current frame such that the scan signals corresponding to the current frame are transmitted after, among the image data corresponding to the current frame, the image data corresponding to the pixel rows are stored in the frame memory.

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Номер записи: 100