Color Patents (Class 345/88)
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Patent number: 9429789Abstract: LCD module and LCD panel are provided. The LCD panel includes a first substrate, a liquid crystal layer, a second substrate, a first color filter and a second color filter. The first color filter includes a transparent area and a filter area. The first substrate is located between the first color filter and the liquid crystal layer. The second color filter includes a transparent area and a filter area. The second substrate is located between the second color filter and the liquid crystal layer. An orthogonal projection of the transparent area of the first color filter on the second color filter is coincided with the filter area of the second color filter. An orthogonal projection of the filter area of the first color filter on the second color filter is coincided with the transparent area of the second color filter. The LCD module and LCD panel implement DOF display mode.Type: GrantFiled: June 29, 2015Date of Patent: August 30, 2016Assignee: CORETRONIC(SUZHOU)CO., LTDInventor: Yong Teng
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Patent number: 9418586Abstract: An apparatus including a display and control logic is provided. In one example, the display includes an array of subpixels having a plurality of zigzag subpixel groups. Each zigzag subpixel group includes at least three zigzag subpixel units arranged adjacently along a horizontal or vertical direction. Each zigzag subpixel unit includes a plurality of subpixels of the same color arranged in a zigzag pattern. In each zigzag subpixel unit, a first plurality of subpixels are arranged along one diagonal direction from a turning subpixel disposed at a turning corner of the zigzag pattern, and a second plurality of subpixels are arranged along another diagonal direction from the turning subpixel. In another example, the display includes an array of subpixels having a novel subpixel repeating group. The control logic is operatively coupled to the display and configured to receive display data and render the display data into control signals for driving the display.Type: GrantFiled: October 21, 2014Date of Patent: August 16, 2016Assignee: SHENZHEN YUNYINGGU TECHNOLOGY CO., LTDInventor: Jing Gu
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Patent number: 9412306Abstract: A driving apparatus includes: a plurality of shift registers disposed at a plurality of stages, respectively, where each of the shift registers includes: a first driver which generates an intermediate output signal and a first output signal based on a first signal, where the first driver includes: an input signal terminal, to which the first signal is applied; and an inversion input signal terminal, to which a second signal, which is an inverted signal of the first signal, is applied; and a second driver which receives the first output signal and generates a second driver output signal having a pulse voltage at a first level based on the first output signal and a pulse voltage at a second level based on a first clock signal or a second clock signal.Type: GrantFiled: March 10, 2014Date of Patent: August 9, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Mi-Hae Kim
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Patent number: 9406264Abstract: A display device includes: a plurality of gate lines extending in a row direction; a plurality of data lines; a plurality of pixels connected to the gate lines and the data lines; and a gate signal supply line connected with at least two gate lines among the plurality of gate lines. At least three data lines among the plurality of data lines are between two pixels adjacent to each other in a row direction.Type: GrantFiled: November 7, 2012Date of Patent: August 2, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jang Mi Kang, Kyung-Hoon Kim, Il Gon Kim, Pong Ok Park
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Patent number: 9378691Abstract: A display device includes: an image display unit that includes a plurality of main pixels in an image display region, the image display unit including sub-pixels; a light source that irradiates the image display region; a light source control unit that controls luminance of the light source; and a color information correction processing unit that corrects first color information that is obtained based on the luminance of the light source and an input video signal to second color information, when color information of at least one of a red pixel, a green pixel, and a blue pixel included in the first color information exceeds a predetermined threshold, the second information is corrected by degenerating color information of the red pixel, the green pixel, and the blue pixel, and by adding color information of the white pixel included in the first color information based on the degenerated color information.Type: GrantFiled: November 9, 2015Date of Patent: June 28, 2016Assignee: Japan Display Inc.Inventors: Fumitaka Gotoh, Tsutomu Harada, Masaaki Kabe, Tae Kurokawa, Kojiro Ikeda, Toshiyuki Nagatsuma, Akira Sakaigawa, Naoyuki Takasaki, Amane Higashi
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Patent number: 9377657Abstract: A liquid crystal display device includes: pixel electrodes arranged in respective sub-pixels arrayed in a matrix, plural image signal lines extending in a column direction of the matrix, and supplied with image signals, pixel transistors which are switches arranged in the respective sub-pixels, and supply the image signals to the pixel electrodes, and scanning signal lines extending in a row direction of the matrix, and control conduction of the pixel transistors. The pixel electrodes aligned in a direction along which the image signal lines extend are connected to either of two adjacent image signal lines with six sub-pixels as one period. The pixel electrodes corresponding to five of the six sub-pixels are connected to one of the two adjacent ones of the image signal lines, and the pixel electrode corresponding to one sub-pixel is connected to the other of the two adjacent ones of the image signal lines.Type: GrantFiled: November 19, 2014Date of Patent: June 28, 2016Assignee: JAPAN DISPLAY INC.Inventors: Kengo Okazaki, Yoshinori Aoki
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Patent number: 9378669Abstract: An embodiment of the present invention provides a display including: a first substrate; gate lines and data lines defining a first color, second color, and third color pixel area; a first color, second color, and third color pixel transistor located in the first color, second color, and third color pixel area respectively; a second substrate; and a black matrix, wherein the black matrix has a first portion and a second portion, and the first portion extends from an edge of a first color pixel active layer for a first shading distance, the second portion extends from an edge of a third pixel active layer for a second shading distance larger than the first shading distance.Type: GrantFiled: February 26, 2015Date of Patent: June 28, 2016Assignee: InnoLux CorporationInventors: Chia-Hao Tsai, Chih-Lung Lin
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Patent number: 9378670Abstract: A display includes a first substrate; gate lines and data lines defining a first color, second color, and third color pixel area; a first color, second color, and third color pixel transistor located in the first color, second color, and third color pixel area respectively; a second substrate; and a black matrix, wherein the black matrix has a first portion and a second portion, and the first portion extends from an edge of a first color pixel active layer for a first shading distance, the second portion extends from an edge of a third pixel active layer for a second shading distance larger than the first shading distance.Type: GrantFiled: June 11, 2015Date of Patent: June 28, 2016Assignee: InnoLux CorporationInventors: Chia-Hao Tsai, Chih-Lung Lin
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Patent number: 9378687Abstract: A display apparatus includes: a plurality of sub pixels that are included in a single pixel, that respectively perform a predetermined display based on a voltage which is supplied using a first electrode and a second electrode and display colors which are different from each other, wherein the plurality of sub pixels include areas which are different from each other, and respectively include pixels which have memory properties.Type: GrantFiled: January 15, 2013Date of Patent: June 28, 2016Assignee: Japan Display Inc.Inventors: Masaya Tamaki, Tatsuya Yata
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Patent number: 9373285Abstract: Provided is a display device for a vehicle such that the life of display elements can be made long even when used in a high temperature environment and, further, unpleasant sensations due to changes in brightness of display images can be prevented. A control unit (90) provides a display period (Fa) in which an illumination control unit (91) turns on light sources (11), and a display control unit (92) generates a display image (M) in display elements (30) within a frame (F) that constitutes the display image (M) on the basis of a display image signal and a non-display period (Fb) in which the illumination control unit (91) turns off all light sources (11). When the display control unit (92) changes the display period proportions (A) for mirrors (E) for the display elements (30) according to prescribed conditions, drive currents (I) and drive periods (H) for the light sources (11) are changed simultaneously such that brightness is not changed.Type: GrantFiled: February 6, 2013Date of Patent: June 21, 2016Assignee: NIPPON SEIKI CO., LTD.Inventor: Makoto Hada
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Patent number: 9361840Abstract: Provided is a display device, including: a drive circuit for inputting input signals generated based on video signals corresponding to at least red, green, and blue input from an exterior thereof; and a substrate including a plurality of connection wiring lines and a plurality of signal lines formed thereon, the plurality of connection wiring lines being connected to the drive circuit, the plurality of signal lines being provided in a display region, to which output signals output from the drive circuit are input through the plurality of connection wiring lines. The plurality of connection wiring lines supplied with the output signals corresponding to the respective colors are formed in layers different from each other corresponding to the respective colors on the substrate.Type: GrantFiled: March 7, 2014Date of Patent: June 7, 2016Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.Inventors: Hidetaka Hakoda, Yuuta Funahashi
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Patent number: 9341880Abstract: In a liquid crystal display panel, as the arrangement of the color filters of the sub-pixel units of every two adjacent pixel units in the row direction, from at least one group composed of two adjacent columns of pixel units in the row direction, is changed, the color filters of two adjacent sub-pixel units in the row direction, which belong to different two pixel units, have the same color; position of the data line connected with the sub-pixel units with color filters of the same color is changed, so that the data line is provided at a side of one of the sub-pixel units with color filters of the same color far away from the other one thereof. Therefore, while the color mixing phenomenon is avoided, a part of the black matrix, which should be provided between the two adjacent sub-pixel units in the row direction, may be omitted.Type: GrantFiled: December 25, 2013Date of Patent: May 17, 2016Assignee: BOE Technology Group Co., Ltd.Inventors: Qiangtao Wang, Hyunsic Choi, Zheng Fang, Yoonsung Um
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Patent number: 9337242Abstract: A display device is provided including a display region arranged with a plurality of main pixels formed from a group including a red pixel, green pixel, blue pixel and white pixel, wherein the main pixel includes an arrangement in which the white pixel is adjacent to a pixel other than the blue pixel, and the display region is arranged so that white pixels in each of the main pixels are mutually adjacent. In the main pixel, the white pixel may be adjacent to the green pixel. In addition, in the main pixel, the blue pixel may be adjacent to the red pixel.Type: GrantFiled: January 29, 2015Date of Patent: May 10, 2016Assignee: Japan Display Inc.Inventor: Masamitsu Furuie
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Patent number: 9335875Abstract: A common electrode for a display used both in driving the display and touch detection. An existing common drive signal both as a drive signal for the touch sensor. A capacitance is formed between the common electrode and a touch sensor electrode. Touch detection is performed by utilizing a change of this capacitance caused by a finger touch of a user. The display device with a touch sensor can be used in a mobile device.Type: GrantFiled: January 30, 2014Date of Patent: May 10, 2016Assignee: JAPAN DISPLAY INC.Inventors: Koji Noguchi, Daisuke Takama, Yoshitoshi Kida
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Patent number: 9336727Abstract: An object is to reduce crosstalk between consecutive frame periods. The writing period of image signals to each pixel and the lighting period of light sources corresponding to the image signals in one frame period are rearranged so that the lighting period of the light sources corresponding to the image signals does not overlap with a previous frame period and the next frame period, and the image signals are written and the light sources corresponding to the image signals are on. Specifically, a display region is divided into a plurality of regions, and each of the plurality of regions is divided for rows in a first half and rows in a latter half. The image signals written to the rows in the latter half are written in the previous frame period, and the light sources corresponding to the image signals are on in the frame period.Type: GrantFiled: November 22, 2011Date of Patent: May 10, 2016Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Yoshiharu Hirakata
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Patent number: 9330622Abstract: A display includes a plurality of pixels, a plurality of scan lines and a plurality of data lines. Each pixel includes a first color sub-pixel, a second color sub-pixel and a third color sub-pixel. The scan lines and the data lines are coupled to the pixels. Two color sub-pixels in the same row coupled to the same data line are coupled to different scan lines, and all of the second color sub-pixels in the same row are coupled to the same scan line.Type: GrantFiled: May 20, 2013Date of Patent: May 3, 2016Assignee: AU Optronics Corp.Inventors: Yi-Xuan Hung, Yu-Hsin Ting, Chen-Ming Chen, I-Fang Chen, Da-Wei Fan
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Patent number: 9317107Abstract: Image display systems and methods are provided. A plurality of pixel groups, each including a plurality of independent pixels, forms a display. A plurality of lenses (1251-N) forming an optical array and aligned along at least one axis (130), can be disposed proximate the display. Each of the plurality of lenses can provide a limited viewing arc (1501-N) for each of the plurality of independent pixels. A sample system can also include a detector (160) to detect the presence and location of a first user (165) and a second user (170) and logic (175), that when executed by a processor (180) coupled to the display, routes a first display signal (1451) based upon the viewing arc of a first portion of pixels; and routes a second display signal (1452) based upon the viewing arc of a second portion of pixels.Type: GrantFiled: June 30, 2011Date of Patent: April 19, 2016Assignee: Hewlett-Packard Development Company, L.P.Inventors: Susie Wee, Andrew J Patti, Mark C Solomon, Glenn A Wong, April Slayden Mitchell, Qi-Bin Sun, Zhi-Shou Zhang
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Patent number: 9318033Abstract: Disclosed herein is a display apparatus including: a first pixel including three sub-pixels for displaying three primary colors respectively; and a second pixel including three sub-pixels for displaying two colors selected among the three primary colors and a predetermined color other than the three primary colors, wherein, in the first pixel, the size of the display surface of a sub-pixel for displaying a specific color included in the three primary colors as a specific color missing from the second pixel is larger than each of the sizes of the display surfaces of the two other sub-pixels for displaying the two other primary colors respectively.Type: GrantFiled: November 19, 2012Date of Patent: April 19, 2016Assignee: Japan Display Inc.Inventors: Yasuyuki Matsui, Akira Sakaigawa, Masaaki Kabe, Kenta Seki
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Patent number: 9305500Abstract: A projector includes a light source unit that supplies light, and a spatial light modulator that modulates light supplied from the light source unit according to an image signal. The spatial light modulator is driven by an applied voltage whose polarity is reversed according to a polarity-reversing frequency which is specific to the spatial light modulator. The light source unit supplies light which is modulated according to pulse width modulation for which fundamental frequency is set based on the polarity-reversing frequency.Type: GrantFiled: June 14, 2007Date of Patent: April 5, 2016Assignee: SEIKO EPSON CORPORATIONInventors: Takashi Toyooka, Hiroyuki Hosaka
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Patent number: 9305502Abstract: Disclosed is an adjusting method of a gamma voltage adjusting device. The gamma voltage adjusting device is utilized for providing a liquid crystal panel with N gray levels and includes a printed circuit board assembly and a gamma voltage fine-tuning unit. The adjusting method of the gamma voltage adjusting device includes: generating N+2 gamma voltages with the printed circuit board assembly; inputting the N+2 gamma voltages to the gamma voltage fine-tuning unit; and generating negative polarity driving voltages and positive polarity driving voltages which are symmetrical according to the N+2 gamma voltages. The present invention decreases a number of gamma integrated circuits on the printed circuit board assembly for saving cost by decreasing the 2N gamma voltages in the prior arts to the N+2 gamma voltages.Type: GrantFiled: November 13, 2013Date of Patent: April 5, 2016Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTDInventors: Dongsheng Guo, Ye Dai
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Patent number: 9299293Abstract: Methods and apparatus are provided for backlighting a dual modulation display device. Each type of light source comprises a multi-primary light source having two or more primary color light emitters having different primary color characteristics from corresponding primary color emitters of other types of light source. Methods may comprise receiving illumination target values for a plurality of locations on the front modulator corresponding to the plurality of light sources, each of the locations on the front modulator configured to be illuminated by two or more of the plurality of light sources, determining primary color drive values source based on the primary color characteristics for that primary color and the illumination target value for the location corresponding to that light source, and driving the primary color light emitters or each type of light source based on the primary color drive values.Type: GrantFiled: October 12, 2012Date of Patent: March 29, 2016Assignee: Dobly Laboratories Licensing CorporationInventors: Chun Chi Thomas Wan, Giorgio Giaretta, Lewis Johnson, Ka Wing Terence Lau, Christopher Orlick, Neil Messmer
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Patent number: 9293092Abstract: A liquid crystal display and liquid crystal display panel (101). The liquid crystal display panel (101) includes: several data lines, several scan lines, several sub-pixel arranged in a matrix form. Three scan lines are formed between every two rows of sub-pixels. One data line is formed respectively on the two sides of the first column of the sub-pixels in every three adjacent columns of the sub-pixels. Therefore, the charging time of the pixels can be improved while the high display quality is satisfied.Type: GrantFiled: December 4, 2012Date of Patent: March 22, 2016Assignee: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Rui Guo
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Patent number: 9285646Abstract: A display panel provided according to the present disclosure may include an optical component and two Guest Host liquid crystal cells located at two opposite sides of the optical component. The optical component is used for reflecting light with a specific wavelength and transmitting other light. The Guest Host liquid crystal cells each include a plurality of pixel units each having two operation states of transmitting natural light and linearly polarized light. When the pixel units transmit the linearly polarized light, the light reflected by the optical component cannot pass through the pixel units, thereby achieving a dark state display.Type: GrantFiled: September 24, 2014Date of Patent: March 15, 2016Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yingtao Wang, Haoliang Zheng
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Patent number: 9276045Abstract: A display panel has first and second unit regions staggered to each other and includes a pixel array layer and a color filter layer. The pixel array layer includes white organic light emitting units generating a white light. The color filter layer includes red, green and blue filter patterns and first and second white filter patterns. A first white light CIE color coordinate of the white light passing through the first white filter patterns is different from a second white light CIE color coordinate of the white light passing through the second white filter patterns. Each first unit region has one red filter pattern, one green filter pattern, one blue filter pattern, and one first white filter pattern disposed therein, and each second unit region has one red filter pattern, one green filter pattern, one blue filter pattern, and one second white filter pattern disposed therein.Type: GrantFiled: February 27, 2014Date of Patent: March 1, 2016Assignee: Au Optronics CorporationInventors: Peng-Bo Xi, Ya-Ling Hsu
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Patent number: 9269329Abstract: A data processor for a display device that includes a plurality of pixels, each of which includes red, first green, blue, and second green sub-pixels, may include an input gamma processor for processing image data including red, green, and blue grayscale data into linearized image data by applying a gamma function to the image data, a first sub-pixel rendering unit for rendering the linearized image data according to layout of a plurality of sub-pixels included in the plurality of pixels using a 3×1 rendering filter to output linearized second sub-pixel data, and an output gamma processor for processing the linearized second sub-pixel data into non-linearized second sub-pixel data by applying an inverse gamma function to the linearized second sub-pixel data.Type: GrantFiled: June 24, 2013Date of Patent: February 23, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Geun-Young Jeong, Ji-Yeon Yang, Byung-Hyun Kim, Takeshi Kato, Myung-Ho Lee
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Patent number: 9262961Abstract: A color display apparatus includes pixels P(i, j) arranged in a matrix having M columns and N rows, where i=1, 2, . . . , M, j=1, 2 . . . , N. A plurality of pixel pairs is defined along either the columns or the rows. Each pixel pair includes one pixel P(i, j) and the next immediate pixel, where if i is an odd integer, j is an odd integer, and if i is an even integer, j is an even integer. Each pixel pair has a first subpixel configured to display a first color and symmetrically positioned across the pixels, a pair of second subpixels configured to display a second color and symmetrically positioned in the pixels respectively, and a pair of third subpixels configured to display a third color and symmetrically positioned in the pixels respectively. The first subpixel is positioned between the pair of second subpixels.Type: GrantFiled: August 30, 2013Date of Patent: February 16, 2016Assignee: AU OPTRONICS CORPORATIONInventors: Li-Wei Shih, Yiyo Dai, Tse-Chin Chen, Hsueh-Yen Yang
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Patent number: 9230489Abstract: An object of the invention is to suppress degradation in image quality of a liquid crystal display device which performs display by field sequential method and to reduce power consumption of a backlight. The highest brightness of a first color light in a pixel region is detected. Gamma correction is performed so that transmittance of a pixel of the region displaying the highest brightness of the first color light is set to maximum and transmittance of other pixel of the region is decreased in accordance with lowering of the first color light intensity, and the region is irradiated with the highest brightness of the first color light. Similarly, a second color light is irradiated in another region concurrently with irradiation of the first color, whereby input of an image signal and lighting of the backlight are performed simultaneously in every region of the pixel portion.Type: GrantFiled: June 23, 2011Date of Patent: January 5, 2016Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Yoshiharu Hirakata, Jun Koyama
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Patent number: 9224331Abstract: An organic light-emitting display screen includes n×m picture dots organized in a matrix with m rows and n columns. Each picture dot includes an organic diode and first and second driver circuits for the diode. Each of the first and second driver circuits includes a driving transistor connected between a reference voltage and one electrode of the diode, a switching transistor for switching a gate voltage onto a gate of the driving transistor, and a capacitor connected to the gate of the driving transistor. A circuit for addressing each of the n×m picture dots, to control alternately and simultaneously a recovery phase on one driver circuit and a display phase on the other driver circuit of a picture dot, includes as row select lines, only m row select lines, one per row of picture dots, and/or as data lines, only n data lines, one per column of picture dots.Type: GrantFiled: April 27, 2007Date of Patent: December 29, 2015Assignee: THOMSON Licensing S.A.S.Inventors: Thierry Kretz, Hugues Lebrun, Elisabeth Chuiton
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Patent number: 9224341Abstract: A color display has a monochrome modulator. An active area of the modulator is illuminated by an array of light sources. The light sources include light sources of three or more colors. The intensities of the light sources may be adjusted to project desired luminance patterns on an active area of the modulator. In a fast field sequential method different colors are projected sequentially. The modulator is set to modulate the projected luminance patterns to display a desired image. In a slow field sequential method, colors are projected simultaneously and the modulator is set to modulate most important colors in the image.Type: GrantFiled: November 14, 2014Date of Patent: December 29, 2015Assignee: Dolby Laboratories Licensing CorporationInventor: Helge Seetzen
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Patent number: 9202423Abstract: A method for driving a liquid crystal display (LCD) panel includes: driving the LCD panel according to a location of a pixel of the LCD panel and a corresponding compensation value of the pixel of the LCD panel. The compensation value of the pixel corresponds to an offset value of a reference brightness corresponding to brightness of a light spot of the LCD panel before compensation of the light spot of the LCD panel.Type: GrantFiled: September 10, 2013Date of Patent: December 1, 2015Inventors: Lei Sun, Yu yeh Chen, Xiaoping Tan
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Patent number: 9196210Abstract: The present invention discloses a driving module for a liquid crystal display device. The driving module includes a data line signal processing unit, for generating a plurality of data driving signals, a scan line signal processing unit, for generating a plurality of gate driving signals, and a control unit, for controlling the data line signal processing unit and the gate line signal processing unit, such that a plurality of sub-pixels corresponding to a data line are with different charging orders in different frames, or are charged with different charging periods in a same frame.Type: GrantFiled: June 10, 2010Date of Patent: November 24, 2015Assignee: NOVATEK Microelectronics Corp.Inventors: Yu-Pin Chang, Chih-Peng Hsia, Tsung-Yin Yu
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Patent number: 9183797Abstract: Disclosed is a display device that (i) converts an input image formed of R, G, and B into a converted image formed of R, G, B, and W to display the converted image and that (ii) compresses the luminance of an input image for the subsequent frame on the basis of an adjustment value C which is corrected in correspondence with the number of, among all pixels in a converted image for the current frame, pixels in a state of luminance saturation and that then converts the input image into a converted image, the display device including a luminance oscillation detecting section (10) for detecting, while input images identical to each other are being inputted each as the above input image, whether converted images corresponding to the respective input images have an oscillating luminance, the display device, in the case where the luminance oscillation detecting section (10) has detected that the converted images have an oscillating luminance, stopping correction of the adjustment value C to fix the adjustment value CType: GrantFiled: April 9, 2012Date of Patent: November 10, 2015Assignee: Sharp Kabushiki KaishaInventors: Kohzoh Takahashi, Taketoshi Nakano, Asahi Yamato, Ken Inada, Fumiyuki Kobayashi, Toshihiro Yanagi
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Patent number: 9177526Abstract: An apparatus for setting a display device includes a target value obtainer, a measured value obtainer, and a determiner. The target value obtainer acquires a target value of a display setting including color temperature and brightness for a display device configured to display an image. The measured value obtainer acquires a measured value of display characteristics including the color temperature and the brightness in each of multiple states specific to the display device, from the display device for which the display setting is sequentially changed to the multiple states. The determiner determines a setting value in the display setting including the color temperature and the brightness from among the multiple states, on the basis of the target value and multiple measured values acquired by the measured value obtainer.Type: GrantFiled: January 6, 2014Date of Patent: November 3, 2015Assignee: FUJI XEROX CO., LTD.Inventors: Makoto Fujio, Noriko Sakai, Toshihiro Iwafuchi, Daigo Hama, Kazuhiko Horikawa, Chizuru Yamazaki
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Patent number: 9172933Abstract: A method for correcting artifact effects is a multi-primary color matrix display is provided where the display is populated by an array of red-green-blue (RGB) pixels and of non-RGB pixels. The method includes receiving all-RGB data in an all-RGB format; converting the all-RGB data into multi-primary data in accordance with a predefined multi-primary color scheme, testing for and applying one or more artifact correction modifications to each of primary colors that is not represented by all pixels, wherein the modification includes shifting of intensity production of a given non-primary color to a metameric equivalent of pixels in one or more adjacent RGB pixels.Type: GrantFiled: October 17, 2012Date of Patent: October 27, 2015Assignee: Samsung Display Co., Ltd.Inventors: Moshe Ben-Chorin, Assaf Pagi
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Patent number: 9171526Abstract: A display device includes a display panel having pixels each constituted by red, green, blue, and white subpixels and a backlight, further including: a grayscale ratio calculating section acquiring RGB data and calculating a ratio of the lowest to the highest of RGB grayscales in each pixel; a detection section detecting, from the RGB data, a ratio of the number of target pixels in one frame; a conversion coefficient calculating section acquiring, by using the detected ratio, a conversion coefficient for converting the RGB data into RGBW data; a RGB data conversion section converting the RGB data into the RGBW data per pixel by using the conversion coefficient; and a display control section generating, from the RGBW data, an image to be displayed on the display panel and causing the display panel to display the image.Type: GrantFiled: July 6, 2011Date of Patent: October 27, 2015Assignee: SHARP KABUSHIKI KAISHAInventors: Ken Inada, Fumiyuki Kobayashi
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Patent number: 9165496Abstract: A flat display device including a display panel. The display panel includes a unit pixel, the unit pixel having a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel. The flat display device further includes a panel driving unit to drive the flat panel in a first driving period and a second driving period in an alternating manner to display a white image on the unit pixel. The panel driving unit generates first white unit data, to enable two of the red, green, and blue sub-pixels and the white sub-pixel to be driven in the first driving period. The panel driving unit generates second white unit data, to enable three of the sub-pixels, which include the sub-pixel not driven in the first driving period, to be driven in the second driving period.Type: GrantFiled: December 18, 2014Date of Patent: October 20, 2015Assignee: LG Display Co., Ltd.Inventors: Ki-Moon Jung, Chong-Hun Park
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Patent number: 9153205Abstract: A display device includes a display portion having red, green, blue and white sub pixels, a converter generating red, green and blue conversion signals using a brightness ratio from a ratio storage, an upper limit value calculator calculating an upper limit value of a display brightness of the white sub pixel using the red, green and blue conversion signals and the brightness ratio, a lower limit value calculator calculating a lower limit value of the display brightness of the white sub pixel using the red, green and blue conversion signals and the brightness ratio, and a white control signal generator generating a white output control signal for controlling the display brightness of the white sub pixel such that the display brightness is not more than the upper limit value and not less than the lower limit value, and outputting the generated white output control signal to the display portion.Type: GrantFiled: November 30, 2011Date of Patent: October 6, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Tsuyoshi Hirashima, Haruo Yamashita, Takeshi Ito
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Patent number: 9129564Abstract: A display control method used in a display apparatus with multiple colored light sources, wherein the colored light sources emit different color lights, the color cast sub frame in the frame of the display apparatus tends to a specific color, and the display control method comprises for the frame, increasing the specific color light source of the frame and decreasing the other color light source of the frame. For the white-tending sub frame of the frame, sub-pixel values of the specific color are decreased according to the increasing level of the specific color light source to generate modified sub-pixel values. For the white-tending frame, the modified sub-pixel values and the sub-pixel values of the other colors are increased according to the decreasing level of the other colored light sources.Type: GrantFiled: February 7, 2014Date of Patent: September 8, 2015Inventor: Hung-Ta Liu
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Patent number: 9129570Abstract: A display apparatus, includes: a display panel including: gate lines extended in a first direction, data lines extended in a second direction, sub-pixels, and a first color filter, a second color filter, and a substantially colorless portion sequentially arranged in the first direction in one-to-one correspondence with the sub-pixels; and a light providing unit configured to supply a first color of light and a second color of light different from the first color of light to the display panel in association with a first sub-frame and a second sub-frame, respectively. At least some of the sub-pixels are grouped into a sub-pixel group including an “a”דb” matrix arrangement, the sub-pixel group being connected to an amount “a” of the gate lines and an amount “b” of the data lines, and “a” and “b” are positive integers greater than zero and “b” is greater than “a.Type: GrantFiled: October 10, 2013Date of Patent: September 8, 2015Assignee: Samsung Display Co., Ltd.Inventors: Jaehyun Cho, Sung-Jin Hong, Jae-Byung Park
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Patent number: 9129558Abstract: An organic light emitting display and method of driving the display are disclosed. The display is driven with an ith frame and an (i+1)th frame, wherein the (i+1)th frame has a shorter duration than the ith frame. The driving signals for the display are adjusted so that the apparent brightness of the frames is substantially equal.Type: GrantFiled: March 14, 2012Date of Patent: September 8, 2015Assignee: Samsung Display Co., Ltd.Inventor: June-Young Song
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Patent number: 9123280Abstract: When first and second region-processing sections (510, 520) calculate in parallel backlight luminances required for an input image halved by a regional image division section (505) included in an area-active drive processing section (5) of a liquid crystal display device, LED data (Db1, Db2) are exchanged for each other, allowing reference to backlight luminances not calculated for one region but calculated for the other region. As a result, when an area is illuminated by surrounding backlight sources, the actual display luminance can be calculated correctly. Thus, pixel display can be provided with correct display tones across the entire screen, thereby preventing a reduction in display quality.Type: GrantFiled: May 13, 2011Date of Patent: September 1, 2015Assignee: Sharp Kabushiki KaishaInventor: Yuhji Tanaka
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Patent number: 9123284Abstract: A display device in which the image quality is improved by control of the peak luminance. A plurality of instantaneous luminances are expressed by performing signal writing to each pixel plural times within one frame period. The gray level is expressed by controlling time integration levels of the plurality of instantaneous luminances. Moreover, the time integration level is increased as the level of gray level data of the pixel is higher, and the time integration level is increased as the average value of gray level data of an image to be displayed is smaller.Type: GrantFiled: September 5, 2012Date of Patent: September 1, 2015Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Yasunori Yoshida
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Patent number: 9117393Abstract: It is intended to provide a field sequential color display device capable of reducing the problem of saccadic color breakup. The color display device represents color images by depicting data of respective color images with a monochromatic display element in synchronism with sequential on-off switching to three color light sources of red, green and blue. Each display frame, which is the minimum cycle of sequential on-off switching of red, green and blue light sources to display any given color image, includes a red color field for displaying data of a red color image, a green color field for displaying data of a green color image and a blue color field for displaying data of a blue color image. In each green color field, at least the red light source or the blue light source is turned on and off in addition to the green light source.Type: GrantFiled: September 10, 2012Date of Patent: August 25, 2015Assignee: HDT INC.Inventor: Masaya Okita
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Patent number: 9096181Abstract: An electro-optic system is provided that includes a front element having first and second surfaces, a rear element including third and fourth surfaces, wherein the front and rear elements are sealably bonded together in a spaced-apart relationship to define a chamber, and an electro-optic medium contained in the chamber, and the electro-optic medium is adapted to be in at least a high transmittance state and a low transmittance state.Type: GrantFiled: February 23, 2015Date of Patent: August 4, 2015Assignee: GENTEX CORPORATIONInventors: Kelvin L. Baumann, John A. VanderPloeg, David A. Theiste, Thomas F. Guarr, Henry A. Luten, George A. Neuman, John S. Anderson
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Patent number: 9099026Abstract: A source driver IC chip, designed to prevent flicker in images displayed on a display panel while suppressing power consumption and heat generation, includes: a reference gradation voltage generating part (220) configured to generate a reference gradation voltage based on a first or second gamma characteristic of the display panel, using first and second power supply voltages (VH) and (VL) inputted through first and second external terminals (PA2, PA3); and a third external terminal (PA4) for externally outputting said reference gradation voltage. The source driver IC chip further includes first and second gradation voltage generating parts configured to generate first and second gradation voltages respectively, using a reference gradation voltage based on a first gamma characteristic inputted through a fourth external terminal and a reference gradation voltage having a second gamma characteristic inputted through a fifth external terminal respectively.Type: GrantFiled: September 23, 2013Date of Patent: August 4, 2015Assignee: LAPIS Semiconductor Co., Ltd.Inventors: Kenichi Shiibayashi, Koji Higuchi, Atsushi Hirama
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Patent number: 9093016Abstract: An electro-optical device includes, on a substrate, three sub-pixels, three sampling switches, three data lines, three image signal lines, and three lead wiring lines. The three sub-pixels correspond to red, green and blue, respectively. The three sub-pixels are included in a unit pixel. The three sampling switches correspond to the three sub-pixels, respectively. The three data lines electrically connect the three sub-pixels and the three sampling switches with each other, respectively. The three image signal lines, which are provided on a side opposite to the three sub-pixels with respect to the three sampling switches, correspond to the three sampling switches, respectively. The three lead wiring lines electrically connect the three sampling switches and the three image signal lines with each other, respectively. Among the three sampling switches, a sampling switch corresponding to green is disposed close to the three image signal lines compared to other two sampling switches.Type: GrantFiled: January 14, 2014Date of Patent: July 28, 2015Assignee: SEIKO EPSON CORPORATIONInventor: Akihiko Ito
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Determining size of sub pixels in a multi primary display for maximizing white point luminance level
Patent number: 9093036Abstract: A method of determining area size of sub pixels in a multi primary display for maximizing white point luminance level is provided herein. The method includes the following stages: obtaining optical properties of a backlight module and of multi primary filters for a multi primary display; obtaining a white point chromaticity for the sub-pixel layout; obtaining, for each one of the primaries intensity ratio between the color primary and the white point; representing a luminance level of the multi primary display based on obtained data, at the required white point chromaticity, as a set of equations in terms of a relative area size of the sub-pixels of the multi primary display; solving the set of equations, to yield ratios of area sizes of the sub-pixels that result in a specified value of luminance at the white point chromaticity.Type: GrantFiled: May 14, 2012Date of Patent: July 28, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Moshe Ben-Chorin -
Patent number: 9082357Abstract: Each image signal line S is connected alternately to a plurality of sub-pixels P positioned on one side of the image signal line S and a plurality of sub-pixels P positioned on the other side. During one frame period, image signals having either one of the positive and negative polarities are input to the first, third, fourth, and sixth image signal lines S1, S3, S4, and S6 of the eight image signal lines S1 to S8 that constitute a unit array of the image signal lines during one frame period, while image signals having the other polarity are input to the remaining image signal lines S2, S5, S7, and S8. According to this liquid crystal display device, it is possible to prevent flicker in image and to prevent the common electrode position from becoming different from the base potential, while preventing increase of power consumption.Type: GrantFiled: July 13, 2012Date of Patent: July 14, 2015Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO. LTDInventors: Teruhisa Nakagawa, Yoshinori Aono, Masahiro Ishii
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Patent number: 9070330Abstract: A display apparatus includes a display section including an array of pixels in a two-dimensional matrix, wherein each of the pixels of the display section includes a pair of a subpixel displaying a first primary color, and a subpixel displaying a second primary color being different from the first primary color.Type: GrantFiled: April 18, 2012Date of Patent: June 30, 2015Assignee: JAPAN DISPLAY INC.Inventor: Masaya Tamaki
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Patent number: 9064469Abstract: In a first subframe period, light sources of a first region and a third region emit lights at the same time; light sources of a second region and a fourth region emit no light at the same time, in which light emission of different colors is performed in the first region and the third region. In a second subframe period, light sources of the second region and the fourth region emit lights at the same time; light sources of the first region and the third region emit no light at the same time, in which light emission of different colors is performed in the second region and the fourth region. The first region and the third region are separated from each other with the second region interposed therebetween; and the second region and the fourth region are separated from each other with the third region interposed therebetween.Type: GrantFiled: June 22, 2011Date of Patent: June 23, 2015Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yoshiharu Hirakata, Shunpei Yamazaki