Color Patents (Class 345/88)
  • Patent number: 8797371
    Abstract: To reduce crosstalk in sequential frame periods. An image signal is written to a pixel in a first sub-frame period. Then, just before a second sub-frame period, the light source is lit in accordance with the image signal written in the first sub-frame period and sequentially, the image signal is written in the second sub-frame period of the right eye frame period. Then, just before the next first sub-frame period, the light source is lit in accordance with the image signal in the third sub-frame period and sequentially, writing of the image signal is performed in the third sub-frame period of the right eye frame period.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: August 5, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Kouhei Toyotaka
  • Publication number: 20140210878
    Abstract: A method of processing image data for display on a display device having a multi-primary image display panel (2) comprises receiving image data constituting an image for display on the image display panel. In a first mode, signal voltages to be applied to sub-pixels of the image display panel are determined from the received image data and from a secondary data value for the pixel thereby to generate luminance variations perceivable at a first viewing position (5) but substantially not perceivable at a second viewing position (3).
    Type: Application
    Filed: October 25, 2012
    Publication date: July 31, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Benjamin John Broughton, Charlotte Wendy Michele Borgers, Paul Antony Gass, Scott Boham, Kenji Maeda, Tatsuo Watanabe
  • Patent number: 8791969
    Abstract: A display device includes a first display panel facing a second display panel with a liquid crystal layer between them. The first display panel has a first gate line, a second gate line spaced apart from the first gate line, a first and second storage lines both spaced apart from the first gate line, first and second switching elements controlled by a first gate signal applied through the first gate line, a first sub-pixel electrode connected to the first switching element, a second sub-pixel electrode connected to the second switching element, a third switching element controlled by a second gate signal applied through the second gate line, and a coupling electrode connected to the third switching element and having a portion overlapping the second storage line. Different voltages are applied to the first storage line and the second storage line.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: July 29, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Jo Kim, Yoon-Jang Kim, Yoon-Sung Um, Jong-Hee Na, Young-Min Choi
  • Publication number: 20140204008
    Abstract: Various arrangements of color sub-pixels in a group of pixels for use in a color display are disclosed. The same group of pixels is repetitively arranged in rows and columns in the color display. In particular, each group of pixels has four pixels arranged on the four quadrants of a rectangle or square. A pixel group may have two sub-pixels in R, two sub-pixels in G, two sub-pixels in B and two sub-pixels in W, but each of the pixels has two different color sub-pixels. In each of the four pixels in a pixel group, the two sub-pixels can be adjacent to each other along the column direction or along the row direction, but the two sub-pixels in at least one pixel are adjacent to each other along the column direction. A pixel group may have two pixels with R, G sub-pixels and two pixels in B.
    Type: Application
    Filed: January 24, 2013
    Publication date: July 24, 2014
    Applicant: Au Optionics Corporation
    Inventors: Hui Chu-Ke, Sheng-Wen Cheng
  • Publication number: 20140204130
    Abstract: A display panel driver includes an image data generator, a brightness correction circuit performing a correction calculation on image data, a drive section driving the display panel in response to corrected image data; and a display timing generator outputting a timing control signal. The correction calculation by the brightness correction circuit is adjustable. When the display panel driver is placed into a test mode, the display timing generator is configured to output an internally-generated timing control signal and the image data generator outputs internally-generated evaluation image data. The evaluation image data are generated so that the evaluation images are switched from one to another in response to the internally-generated timing control signal.
    Type: Application
    Filed: January 16, 2014
    Publication date: July 24, 2014
    Applicant: Renesas SP Drivers Inc,
    Inventors: Akio SUGIYAMA, Takashi NOSE, Hirobumi FURIHATA
  • Publication number: 20140204007
    Abstract: Systems and methods for liquid crystal display brightness and color optimization that includes configuring a sub-pixel of a LCD to allow light from a backlight to traverse the sub-pixel unfiltered to a display surface of the LCD. The method also includes determining a color primary based on the amount of light from the backlight that traverses the sub-pixel unfiltered. The color primary defines a portion of a color gamut available to the LCD, and the color gamut has a plurality of colors. The method further includes applying a color restoration algorithm to adjust the plurality of colors in the color gamut.
    Type: Application
    Filed: January 22, 2013
    Publication date: July 24, 2014
    Inventor: Stefan Peana
  • Patent number: 8780029
    Abstract: A multiprimary liquid crystal display device in which deteriorations in display quality caused by the coloration of a gray representation when viewed from an oblique direction are suppressed, and a signal conversion circuit for use in such a multiprimary liquid crystal display device are provided. A signal conversion circuit according to the present invention is for use in a multiprimary liquid crystal display device, the multiprimary liquid crystal display device having a pixel defined by a plurality of subpixels including a red subpixel, a green subpixel, a blue subpixel, and a yellow subpixel, and performing multicolor display by using four or more primary colors to be displayed by the plurality of subpixels, the signal conversion circuit converting an input video signal to a multiprimary signal corresponding to four or more primary colors. When a video signal for the pixel to display a gray color having a normalized luminance of no less than 0.2 and no more than 0.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: July 15, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kozo Nakamura, Shun Ueki, Kazunari Tomizawa, Tomohiko Mori, Yuichi Yoshida
  • Publication number: 20140192095
    Abstract: The present invention relates to an area-saving driving circuit for a display panel, which comprises a plurality of digital-to-analog converting circuits convert input data, respectively, and produce a pixel signal. A plurality of driving units are coupled to the plurality of digital-to-analog converting circuits, respectively. They produce a driving signal according to the pixel signal and transmit the driving signal to the display panel for displaying. A plurality of voltage booster units are coupled to the plurality of driving units, respectively, and produce a supply voltage according to a control signal. Then the supply voltage is provided to the plurality of driving units. Thereby, by providing the supply voltage to the plurality of driving units of the display panel by means of the plurality of voltage booster units, the area of the external storage capacitor is reduced. Alternative, the external storage capacitor can be even not required.
    Type: Application
    Filed: January 2, 2014
    Publication date: July 10, 2014
    Applicant: SITRONIX TECHNOLOGY CORP.
    Inventor: MIN-NAN LIAO
  • Patent number: 8773480
    Abstract: The optical performance is enhanced of display systems that use field sequential color and pulse width modulation to generate color and color gray scale values. Such enhancement may be achieved by various data encoding methods disclosed herein that may include temporal redistribution of bit values to mitigate color motional artifacts associated with field sequential color-based display systems, selective combination of intensity modulation, pulse width modulation, and/or the noncontiguous sequencing of primary colors. There is further an intelligent real-time dynamic manipulation of gray scale values in portions of an image that are computationally determined to be images of objects moving against a global background, so as to temporally front load or concentrate the bits comprising such moving objects and thereby further mitigate said motional artifacts using both actual and virtual aggregate pulse truncation across all primary colors being modulated.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: July 8, 2014
    Assignee: Rambus Delaware LLC
    Inventors: Daniel K. Van Ostrand, Carey King, Berry Tod Cox
  • Patent number: 8773340
    Abstract: A color conversion circuit converts a three-primary-color signal PS0 to a 5-color signal PS5, and includes (i) a color component extraction module that generates, by performing isochromatic conversion, a 7-color signal PS2 made up of 7 color components equivalent in terms of color to color components d1 through d5 of the 5-color signal PS5, and (ii) a matrix operation module that generates color components of the 5-color signal by performing linear combination of the color components of the 7-color signal. With this, it is possible to realize a color conversion circuit by which colors represented by a signal after conversion can be adjusted using intuitively-understandable parameters.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: July 8, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazunari Tomizawa, Kozo Nakamura
  • Patent number: 8773339
    Abstract: A method of driving a display panel includes applying a common voltage to the display panel, sensing a frequency of the display panel to generate a frequency signal, adjusting a gain of an operational amplifier based on the frequency signal, receiving a feedback common voltage from the display panel, and compensating the common voltage using an input resistor, the operational amplifier and a feedback resistor based on the feedback common voltage to apply the compensated common voltage to the display panel. The operational amplifier includes an inverting input terminal connected to the input resistor, a non-inverting input terminal to which a reference common voltage is applied and an output terminal. The feedback resistor is between the inverting input terminal and the output terminal.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: July 8, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young-Su Kim, Jae-Hoon Lee, Chang-Ho Lee, Yu-Han Bae
  • Publication number: 20140184659
    Abstract: A liquid crystal display includes a system and a liquid crystal module. The system detects an input frame frequency, generates a DISP signal indicating the input of an abnormal signal at a high logic level when the detected frame frequency is within a previously determined range, and generates the DISP signal at a low logic level when the detected frame frequency is beyond the previously determined range. The liquid crystal module includes a signal processing unit which selectively outputs digital video data for implementing a normal screen and digital black data for implementing a black screen in response to the DISP signal.
    Type: Application
    Filed: November 1, 2013
    Publication date: July 3, 2014
    Applicant: LG DISPLAY CO., LTD
    Inventors: Jungyoul Kang, Sanggyu Kim, Yongbeom Park, Sungmin Je, Kyoungkoo Lee, Hansu Kim, Yongkeun Park, Jinhee Lee
  • Publication number: 20140184668
    Abstract: A display apparatus includes a display panel, a panel driving part and a light-source part. The panel driving part provides the display panel with a first sub-frame data during a first sub-frame of an N-th frame (N is a natural number), provides the display panel with a second sub-frame data during a second sub-frame of the N-th frame and providing the display panel with a third sub-frame data during a third sub-frame of the N-th frame, the first sub-frame data including a plurality of data blocks, the data blocks adjacent to each other having color pixel data different from each other, the second sub-frame data including a plurality of data blocks having a color sequence different from the first sub-frame data, and the third sub-frame data including a plurality of data blocks having the color sequence different from the first and second sub-frame data.
    Type: Application
    Filed: May 14, 2013
    Publication date: July 3, 2014
    Applicant: Samsung Display Co., LTD.
    Inventors: Hyun-Deok IM, Kwang-Keun LEE, Jae-Byung PARK, Hyun-Min CHO, Seon-Tae YOON
  • Publication number: 20140184661
    Abstract: A first substrate includes a first switching element arranged in a first color pixel and a second switching element arranged in a second color pixel of which color is different from the color of the first color pixel in an active area. A driving unit superimposes DC bias voltages on voltages corresponding to gradations to be displayed in the first color pixel and the second color pixel, and to supply the superimposed voltages to the first pixel electrode and the second pixel electrode, respectively. A first halftone gradation voltage obtained by superimposing a first DC bias voltage on a voltage corresponding to a halftone gradation is supplied to the first pixel electrode. A second halftone gradation voltage obtained by superimposing a second DC bias voltage different from the first DC bias voltage on a voltage corresponding to the halftone gradation is supplied to the second pixel electrode.
    Type: Application
    Filed: December 26, 2013
    Publication date: July 3, 2014
    Applicant: Japan Display Inc.
    Inventor: Hiroki TSUDA
  • Patent number: 8766893
    Abstract: The invention relates to a method for compensating for poor uniformity of a liquid crystal display having a non-uniform backlight. By virtue of selecting a standard color that all cells can achieve to serve as a virtually primary color, the invention measures to give the relationship between the tri-stimulus values of the virtually primary color and those presented by the respective cells and records the resultant values to serve as compensation data. During operation of a display, the input image data are computed based on the compensation data for respective cells in accordance with the cell locations and converted into compensated image signals. As such, all of the cells are able to present the same chromaticity and brightness upon receiving the same image signal, thereby performing uniform chromaticity and brightness across the entire display.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: July 1, 2014
    Assignee: Dynascan Technology Corp.
    Inventor: Tsung-I Wang
  • Patent number: 8766889
    Abstract: A liquid crystal display and a driving method thereof are provided. The liquid crystal display includes a plurality of pixels, a plurality of scan lines, and a plurality of data lines. Each pixel includes a plurality of sub-pixels. Each sub-pixel is coupled to the data line, and includes a switch, a storage capacitor, and a sub-pixel electrode. The switch is coupled to a scan line to receive a scan signal. The switch is turned on by the scan signal to receive a data signal transmitted from the data line. The storage capacitors of the sub-pixels of each pixel are coupled to the scan lines, or the storage capacitor of one of the sub-pixels of each pixel is coupled to a common electrode and the storage capacitors of the other sub-pixels are coupled to the scan lines. The switch and the storage capacitor of each sub-pixel are coupled to different scan lines.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: July 1, 2014
    Assignee: Au Optronics Corporation
    Inventors: Ming-Sheng Lai, Chih-Wei Wang, Hsueh-Ying Huang, Chen-Kuo Yang
  • Patent number: 8760376
    Abstract: A liquid crystal display device that displays an image by inputting n (n is a natural number) bit digital signals has n memory circuits in each pixel. The n memory circuits store n bit digital signals, which are converted into corresponding analog signals by a D/A converter provided in each pixel so that the analog signals are inputted to a liquid crystal element. Therefore, when a still image is to be displayed, the stored digital signals are repeatedly used once the digital signals are written in the memory circuits. During the still image is displayed, a source signal line driving circuit and other circuits can stop their driving. Power consumption of the liquid crystal display device thus can be reduced.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: June 24, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Jun Koyama, Shunpei Yamazaki
  • Patent number: 8761691
    Abstract: A method of providing a user interface according to a user characteristic and a mobile terminal using the same are provided. The mobile terminal includes: a display unit for displaying data on a screen thereof with different screen sizes corresponding to a horizontal mode and a vertical mode; an input unit for providing different input key arrangements corresponding to the vertical mode, a left hand horizontal mode, and a right hand horizontal mode; a detection unit for detecting a mode conversion between the horizontal mode and the vertical mode and a mode conversion between the left hand horizontal mode and the right hand horizontal mode; and a controller for controlling to display data to correspond to a screen size corresponding to the detected mode and to provide a corresponding input key arrangement.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: June 24, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young Sik Park
  • Publication number: 20140168284
    Abstract: According to an aspect, a display device includes a first sub-pixel, a second sub-pixel, a third sub-pixel; and a fourth sub-pixel. A signal obtained based on at least an input signal for the first sub-pixel and an extension coefficient is supplied to the first sub-pixel. A signal obtained based on at least an input signal for the second sub-pixel and the extension coefficient is supplied to the second sub-pixel. A signal obtained based on at least an input signal for the third sub-pixel and the extension coefficient is supplied to the third sub-pixel. A signal obtained based on at least the input signal for the first sub-pixel, the input signal for the second sub-pixel, the input signal for the third sub-pixel, and the extension coefficient is supplied to the fourth sub-pixel. The extension coefficient varies based on at least a saturation of the input signals.
    Type: Application
    Filed: November 21, 2013
    Publication date: June 19, 2014
    Applicant: Japan Display Inc.
    Inventors: Masaaki Kabe, Toshiyuki Nagatsuma, Amane Higashi, Kojiro Ikeda, Tae Kurokawa, Masashi Mitsui, Hiroki Uchiyama, Hirokazu Tatsuno, Fumitaka Goto, Akira Sakaigawa
  • Publication number: 20140160186
    Abstract: Disclosed is a liquid crystal display device and a method of driving the same, which prevent image-quality defects due to charge variation. In the method of driving the liquid crystal display device including a pixel consisting of first to third sub-pixels which share one data line and are connected to first to third gate lines, one sub-pixel is turned off on a per frame basis, another sub-pixel is charged with a polarity inverted data voltage for a first charge time including a charge time of the turned-off sub-pixel, and the other sub-pixel is charged with a data voltage having the same polarity as a previous data voltage for a second charge time less than the first charge time. The turned-off sub-pixel, the sub-pixel charged with the polarity inverted data voltage, and the sub-pixel charged with the polarity maintained data voltage alternately vary on a per frame basis.
    Type: Application
    Filed: October 15, 2013
    Publication date: June 12, 2014
    Applicant: LG Display Co., Ltd.
    Inventors: Dae-Seok OH, Yong-Hwa PARK
  • Patent number: 8749542
    Abstract: According to various embodiments of the invention, gamma curves for multiple pixel groups can be calibrated using look-up tables or by using reference voltage groups provided by gamma voltage generators so that the pixels can display multiple images with correct gray levels at different view angles. Therefore, color shift can be avoided or lessened without necessarily using extra circuitry on the display panel. Also, any related light transmittance or light utilization efficiency reduction may be decreased or eliminated.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: June 10, 2014
    Assignee: Innolux Corporation
    Inventor: Ming-Feng Hsieh
  • Patent number: 8749599
    Abstract: A 4-primary color display includes a display panel including a plurality of 4-primary color pixels each including red, green, blue, and white liquid crystal cells, and a pixel data rendering circuit for producing 4-primary color pixel data corresponding to a second horizontal resolution, which is equal to a physical horizontal resolution of the display panel, using 3 -primary color pixel data corresponding to a first horizontal resolution, which is two times higher than the physical horizontal resolution of the display panel. The pixel data rendering circuit determines a weighting factor based on a luminance ratio of two 3-primary color pixel data so as to increase a cognitive horizontal resolution of a luminance in the 4-primary color pixel data to the first horizontal resolution, and reflects the weighting factor to the calculation of a gray value of one 4-primary color pixel data.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: June 10, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Minchul Byun, Heumeil Baek
  • Patent number: 8749591
    Abstract: An image processing apparatus has a light source luminance calculating unit which calculates the luminances of the light sources of the plurality of colors of a back light based on an input image, a light source maximum value detecting unit which detects a light source maximum value that is the largest value in the light source luminances of the plurality of colors, a light source luminance correcting unit which corrects the light source luminances to obtain corrected light source luminances so as to reduce the difference among the light source luminances of the plurality of colors if the light source maximum value is smaller than a threshold value, a gradation conversion function calculating unit which calculates a gradation conversion function applied to the input image corresponding to each of the plurality of colors, by using the corrected light source luminance, and a control unit which converts the input image by using the gradation conversion function and outputs the input image to a liquid crystal pan
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: June 10, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiro Baba, Ryosuke Nonaka, Yuma Sano
  • Patent number: 8749463
    Abstract: A phase-modulating apparatus includes a spatial light modulator, an input value setting unit, a plurality of sets of reference data, a converting unit, and a driving unit. The input value setting unit sets an input value for each pixel. Each set of reference data corresponds to at least one pixel. The converting unit converts an input value inputted for each pixel to a control value by referencing the corresponding set of reference data. The driving unit converts the control value to a voltage value. The driving unit drives each pixel with a drive voltage corresponding to the voltage value. Each set of reference data correlates a plurality of first values from which input values are taken, and a plurality of second values from which control values are taken to ensure that the relationship between the plurality of first values and phase modulation amounts attained by the corresponding at least one pixel is a prescribed linear relationship.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: June 10, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Naoya Matsumoto, Takashi Inoue, Norihiro Fukuchi, Yuji Kobayashi, Tsutomu Hara
  • Patent number: 8743037
    Abstract: A color field-sequential liquid crystal display device comprising: a liquid crystal panel; a planar light-source unit for emitting light toward the liquid crystal panel; and a signal processor connected to the liquid crystal panel and to the planar light-source unit; wherein the signal processing includes: a comparing unit that compares video signals included in subframes of at least one identical color in each frame of two mutually adjacent video frames; and a polarity reversing unit that reverses the polarities of video signals in mutually adjacent subframes within the same frame, deciding whether or not to reverse the polarities of all video signals of one frame based upon the result of the comparison by the comparing unit, and outputting a video signal having the decided polarity to the liquid crystal panel.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: June 3, 2014
    Assignee: NLT Technologies, Ltd.
    Inventor: Kazunori Masumura
  • Patent number: 8743097
    Abstract: A liquid crystal display comprising an array substrate formed with gate lines, data lines and pixel electrodes. Odd rows of pixel electrodes in the same column are connected with one of data lines at two sides of the column, even rows of pixel electrodes are connected with the other one of the data lines; pixel electrodes in the same row are controlled by one of the two gate lines at two sides of the row of pixel electrodes, pixel electrodes controlled by each gate line are located in the same row; there are two gate lines between two adjacent rows of pixel electrodes; two adjacent pixel electrodes in the same row between two adjacent data lines are controlled by one of the two gate lines at two sides of the row of pixel electrodes, and they are connected with one of the two adjacent data lines.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: June 3, 2014
    Assignee: BOE Technology Group Co., Ltd.
    Inventor: Guangliang Shang
  • Patent number: 8743038
    Abstract: A display apparatus including a backlight module, a filtering module and a display panel is provided. The backlight module includes a plurality of sets of light emitting devices. Each set of light emitting devices includes at least one first color light emitting device and at least one second color light emitting device. The filtering module is disposed on a transmission path of light emitted by the plurality of sets of light emitting devices and includes a plurality of sets of filtering units. Each set of filtering units is configured to allow light emitted by one set of light emitting devices to pass through. The display panel is disposed on the transmission path of the light emitted by the plurality of sets of light emitting devices. The backlight module turns on the plurality of sets of light emitting devices by turns.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: June 3, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: Chi-Lin Wu, Wei-Ting Yen
  • Patent number: 8743107
    Abstract: The disclosed liquid crystal display device includes a display panel for displaying a picture thereon, a plurality of gate drive ICs for forwarding scan pulses for driving gate lines on the display panel, a plurality of upper data drive ICs for supplying pixel voltages to data lines on one side of the display panel respectively, a plurality of lower data drive ICs for supplying the pixel voltages to the data lines on the other side of the display panel respectively, a first timing controller for generating and supplying an upper data control signal to the upper data drive ICs for controlling operation of the upper data drive ICs, and a second timing controller for generating and supplying a lower data control signal to the lower data drive ICs for controlling operation of the lower data drive ICs.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: June 3, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Min-Kyu Kim
  • Patent number: 8743152
    Abstract: Disclosed herein is a display apparatus including: a display pixel section including pixels each composed of an arrangement of red, green, and blue subpixels and an additional subpixel of a specified color; and a signal processing section configured to extend signal levels of an input image signal, extract a signal component of the specified color from extended red, green, and blue signals, determine a signal level of the specified color, perform an extension process based on the signal level of the specified color, modulate the red, green, and blue signals subjected to the extension process in accordance with a specified modulation level so as to have different brightness from that of an original image, and modulate brightness of a light source. The input image signal used to determine the modulation level and the input image signal subjected to a modulation process and displayed are of different frames.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: June 3, 2014
    Assignee: Japan Display West, Inc.
    Inventor: Akira Sakaigawa
  • Patent number: 8730141
    Abstract: The present invention discloses a display pixel structure, a liquid crystal panel, a liquid crystal display (LCD) device and a driving method. Said display pixel structure comprises multiple parallel pixel areas; each said pixel area comprises two single rows of first sib-pixel area and second sub-pixel area which are mutually parallel; said second sub-pixel area comprises multiple pixel elements; every three adjacent pixel elements form a group; and the three pixel elements of each group are respectively corresponding to three primary colors. The present invention has the advantages that the corresponding phase retardation coating is not exceeded within the range of wider light; the XTALK problem under the condition of large-angle light is avoided; the viewed color is not changed because the light emitted by each pixel of the second sub-pixel area is not blocked; and higher aperture opening ratio is obtained.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: May 20, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Hunglung Hou, Chengming He
  • Patent number: 8730280
    Abstract: A display device includes a color converter, a timing controller, and a display panel. The color converter converts R, G, and B data into R?, G?, B?, and W? data. The R?, G?, B?, and W? data includes first component data and second component data. The timing controller provides the first component data to a data driver during a first driving time and provides the second component data to the data driver during a second driving time. The data driver provides gray level display voltages corresponding to the first component data and the second component data to a data line, and the display panel displays the R?, G?, B?, and W? data in response to the gray level display voltage.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: May 20, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Si-Duk Sung, Baek-Woon Lee
  • Publication number: 20140132842
    Abstract: Provided is a data processing apparatus including a correction circuit. In at least one embodiment, the data correction circuit acquires pixel data of a first pixel for display of a first color component and pixel data of a second pixel for display of a second color component, the second pixel being driven by a scanning signal line which drives the first pixel and being driven by a data signal line which is adjacent to the first pixel, and corrects the pixel data of the second pixel in accordance with a relationship between a value of the pixel data of the first pixel and a value of the pixel data of the second pixel. Thus, it is possible to cause a liquid crystal driving panel to perform uniform display without causing display unevenness even in a case where a halftone of a specific color component is uniformly displayed.
    Type: Application
    Filed: January 22, 2014
    Publication date: May 15, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Toshikazu TSUCHIYA, Masae Kawabata, Fumikazu Shimoshikiryoh
  • Patent number: 8724058
    Abstract: A color filter substrate including a substrate, a black matrix layer and a color filter substrate layer is provided. The substrate has a plurality of grooves. The black matrix layer is disposed on the substrate between each two adjacent grooves, wherein the black matrix layer extends to the region above the groove from the edge of the groove and an undercut profile forms between the bottom of black matrix and the substrate. The color filter layer including a plurality of filter films separated is filled in the plurality of grooves and the plurality of filter films is separated from each other by the black matrix layer. In addition, a method of fabricating a color filter substrate is also provided. The above-mentioned color filter substrate and the fabricating method thereof can improve the quality and color uniformity of the color filter substrate.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: May 13, 2014
    Assignee: Au Optronics Corporation
    Inventors: Chun-Chieh Tsao, Su-Chin Lee
  • Patent number: 8723900
    Abstract: A display device includes: a light emission control part which allows a light source to emit the light having one of the plural different main wavelengths in each of plural sub frames; a display panel which controls the transmission of light in each pixel; and a display control part which controls the display panel corresponding to a gray level value with respect to the each pixel, wherein the light emitting control part performs the light emission of light having a first main wavelength in a first sub frame in accordance with a light emission amount weighted based on a time for calculation including a first interval which is a interval between the first sub frame where the first main wavelength is emitted and a second sub frame where the first main wavelength is emitted after the first sub frame.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: May 13, 2014
    Assignee: Pixtronix, Inc.
    Inventors: Hajime Akimoto, Kenta Kajiyama
  • Patent number: 8723772
    Abstract: A LCD panel with an improved pixel array configuration is provided. The LCD panel uses a column inversion driving method to drive the data lines so as to achieve a stable common voltage. Moreover, by cross-connecting the layout traces of the wiring zone in a specified manner, the gate pulses outputted from every two gate lines neighboring the sub-pixel are not overlapped with each other, so that the frame can be normally displayed.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: May 13, 2014
    Assignee: AU Optronics Corp.
    Inventors: Yu-Chung Yang, Kuo-Chang Su, Yung-Chih Chen, Kuo-Hua Hsu, Chih-Ying Lin, Kun-Yueh Lin
  • Publication number: 20140125571
    Abstract: Embodiments of the present disclosure provide an array substrate comprising a plurality of gate lines, a plurality of data lines, and pixel regions each of which is defined by intersecting one gate line and two neighboring data lines among the plurality of gate lines and the plurality of data lines wherein two thin film transistors (TFTs) are formed at the intersections between the gate line and the two neighboring data lines in each pixel region, a first pixel electrode and a second pixel electrode are alternately arranged in each pixel region. A first thin film transistor of the two thin film transistors is coupled to the first pixel electrode, a second thin film transistor of the two thin film transistors is coupled to the second pixel electrode. The two neighboring data lines participating in defining a pixel region comprise a first data line coupling to the first thin film transistor and a second data line coupling to the second thin film transistor.
    Type: Application
    Filed: November 5, 2013
    Publication date: May 8, 2014
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yoon-Sung Um, Hyun-Sic Choi, Zhiqiang Xu, Hui Li
  • Publication number: 20140125710
    Abstract: A driving system for a liquid crystal display apparatus and a method thereof are provided, the driving system comprises a data-latching circuit, a synchronous-signal separating module, a vertical synchronous-signal discriminator, a vertical synchronous-signal counter, a horizontal synchronous-signal discriminator, a data operator and a polarity-signal generator. The vertical synchronous-signal discriminator outputs a start signal to the polarity-signal generator when vertical synchronous signals exist. The vertical synchronous-signal counter accumulates an amount of the vertical synchronous signals, and outputs an accumulated result to the data operator. The horizontal synchronous-signal discriminator sends the start signal to the data operator.
    Type: Application
    Filed: May 3, 2012
    Publication date: May 8, 2014
    Applicant: Hisense Hiview Tech Co., Ltd.
    Inventor: Shunming Huang
  • Publication number: 20140125572
    Abstract: 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: Application
    Filed: January 14, 2014
    Publication date: May 8, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Akihiko ITO
  • Publication number: 20140125644
    Abstract: A display panel, a driving method for the same, and a display apparatus, wherein the display panel includes: a display substrate with a plurality of TFTs arranged in an array, a source driving integrated circuit and a gate driving integrated circuit, the gate driving IC is connected with a plurality of gate lines, each gate line is connected with the gates of the TFTs in adjacent N rows, and different gate lines are connected with the gates of the TFTs in different rows, N is an integer being greater than 1; the source driving IC is connected with a plurality of source lines, sources of different TFTs connected to a same gate line are connected with different source lines, and sources of the TFTs, which are connected to different gate lines and located in a same column and spaced g*N?1 TFTs apart, are connected with a same source line.
    Type: Application
    Filed: December 6, 2012
    Publication date: May 8, 2014
    Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Rui Guo
  • Publication number: 20140125716
    Abstract: A display control drive device sequentially reads display data from a display memory in which the display data is stored, produces three primary color image signals that are applied to pixel locations in a dot-matrix color display device, and transmits the signals through a common external output terminal in a time-sharing manner. The display control drive device produces control signals applied to selection switching elements in the display device and that selectively apply an input image signal to any of three source lines. The display control drive device includes: a unit that determines one horizontal period based on a clock received from outside synchronously with display data; and a signal production circuit that produces and transmits the control signals, applied to the selection switching elements, so that the control signals will have a pulse duration equivalent to a time calculated by trisecting one horizontal period.
    Type: Application
    Filed: December 9, 2013
    Publication date: May 8, 2014
    Applicant: Renesas Electronics Corporation
    Inventors: Yasuhito KUROKAWA, Kunihiko TANI
  • Publication number: 20140118423
    Abstract: Viewing angle characteristics on the entire display surface are improved while suppressing harmful effects such as flicker and banding caused by viewing angle improvement control. A liquid crystal display apparatus (1) includes: a liquid crystal panel (11) which includes a plurality of pixels arranged in a matrix; a drive control unit (24) which performs viewing angle improvement processing by converting a gradation of a video signal input to the pixel; and a processing object determination unit (22) which determines whether or not an image displayed on each of the pixels of the liquid crystal panel (11) is an image having an intermediate color. The drive control unit (24) is configured to perform the viewing angle improvement processing on the pixel determined by the processing object determination unit (22) such that the pixel displays the image having the intermediate color.
    Type: Application
    Filed: June 22, 2012
    Publication date: May 1, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Makoto Hasegawa, Kazunari Tomizawa, Tomohiko Mori, Yuichi Yoshida
  • Publication number: 20140118427
    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying images using multiple frame-specific contributing color (FSCC). In one aspect, an input is configured to receive image data corresponding to a current image frame. Contributing color selection logic is configured, based on received image data, to obtain multiple FSCCs for use in conjunction with a set of frame-independent contributing colors (FICCs) to generate the current image frame on a display. In addition, subframe generation logic is configured to process the received image data for the current image frame to generate at least two subframes for each of the FICCs and the obtained multiple FSCCs such that an output by the display of the generated subframes results in the display of the current image frame.
    Type: Application
    Filed: October 28, 2013
    Publication date: May 1, 2014
    Applicant: Pixtronix, Inc.
    Inventors: Edward Buckley, Fahri Yaras
  • Patent number: 8711304
    Abstract: An electronic device housing may have upper and lower portions that are attached with a hinge. At least one portion of the housing may have a rear planar surface and peripheral sidewalls having edges. A display module may be mounted in the housing. The display module may have glass layers such as a color filter glass layer and a thin-film transistor substrate. The color filter glass layer may serve as the outermost glass layer in the display module. The edges of the display module may be aligned with the edges of the peripheral housing sidewalls to create the appearance of a borderless display for the electronic device. The display module may be provided with an opening that allows a camera or other electronic components to receive light. Traces may be provided on the underside of the thin-film transistor substrate to serve as signal paths for the electrical components.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: April 29, 2014
    Assignee: Apple Inc.
    Inventors: Dinesh C. Mathew, Thomas W. Wilson, Jr., Victor H. Yin, Bryan W. Posner, Chris Ligtenberg, Brett W. Degner, Peteris K. Augenbergs
  • Patent number: 8711080
    Abstract: There is provided a backlight assembly that supplies light to an LCD panel. The backlight assembly includes an LED assembly and a backlight unit. The LED assembly includes at least one LED block region having a plurality of LEDs. The backlight unit driving unit includes a color control unit that determines a representative color of the LED block region using an image signal supplied to the LCD panel, and a dimming control unit that controls the color of the LED block region based on the representative color determined by the color control unit.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: April 29, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong Min Yeo, Gi Cherl Kim, Byung Choon Yang, Se Ki Park, Yong Hoon Kwon
  • Patent number: 8711072
    Abstract: The present invention relates to a method and a system of reducing motion blur in a liquid crystal cell. A basic idea of the invention is to process, in an LCD system, a luminance component (Y) of a picture frame to provide motion blur reduction, wherein overdrive is applied to the luminance component only. First, a luminance component related to a first picture frame is stored. Thereafter, a luminance component of a subsequent picture frame is acquired. To reduce motion blur in the LCD, a modified luminance component (Y?) is created based on a difference between the value of the luminance component of the subsequent frame and the value of the luminance component related to the first frame. Hence, based on the value of the difference in the luminance components, and color components (U, V) of the subsequent picture frame, a drive voltage is applied to the LC cell.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: April 29, 2014
    Assignee: Entropic Communications, Inc.
    Inventors: Otto Leo Warmuth, Robert Tolkiehn, Roel Van Woudenberg
  • Publication number: 20140111411
    Abstract: A liquid crystal display and a liquid crystal display panel. The liquid crystal display panel (101) includes several data lines, several scanning lines, and n rows and m columns of pixels arranged in the form of matrix, wherein, the No. Ni+1, Ni+2, and Ni+N rows of pixels are connected to the No. i+1 scanning line G(i+1) at the same time; i is a nonnegative integer less than or equal to (n/N)?1, N is an odd number greater than or equal to 3, and n is greater than N, thus the charge time of pixel is improved.
    Type: Application
    Filed: November 21, 2012
    Publication date: April 24, 2014
    Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Rui Guo
  • Publication number: 20140111410
    Abstract: 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: Application
    Filed: December 4, 2012
    Publication date: April 24, 2014
    Applicant: Beijing Boe Optoelectronics Technology Co., LTD
    Inventor: Rui Guo
  • Publication number: 20140111556
    Abstract: An array substrate is disclosed. Data lines directly pass through the area where a secondary pixel electrode is located to input, data signals to the secondary pixel electrode. First scanning lines, second scanning lines and switches are arranged between the adjacent pixels in an up-down direction. The area between the pixels is a dark area corresponding to an opaque area. Under a 3D display mode, a difference of the default voltages exists between a main pixel electrode and a secondary pixel electrode. In addition, a liquid crystal display is provided. By adopting the above design, the crosstalk and the color shift under the 3D display mode may be reduced. In addition, the reliability of the liquid crystal panel may be enhanced,.
    Type: Application
    Filed: October 25, 2012
    Publication date: April 24, 2014
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Cheng-hung Chen
  • Patent number: 8704103
    Abstract: A display device includes: a display panel; a metal frame; and a flexible printed wiring board fixed to the display panel and having a portion positioned between a lower surface of the display panel and the metal frame, in which the flexible printed wiring board includes: a protruding piece portion having a protruding length larger than a width in plan view; an electrode arranged on the protruding piece portion; a connection terminal electrically connected to the display panel; an external terminal for electrically connecting to an outside; and a wiring pattern connected to the electrode, the connection terminal, and the external terminal, and in which the electrode is electrically and physically bonded to the metal frame in a manner opposed to the metal frame, and is arranged at a position overlapping with a center of a surface of the metal frame facing the display panel.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: April 22, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Eiji Oohira
  • Patent number: 8704740
    Abstract: An exemplary embodiment of method of establishing a gamma table using a system includes following steps. Providing a signal generator, a display device, and a color analyzer, consists of measuring luminance values of the images corresponding to a plurality of reference sampling points. Obtaining a luminance characteristic curve based on the reference sampling points and luminance values using Bezier curve interpolation. Locating the gray scales on the luminance characteristic curve with the same luminance values as the gray scales of a standard gamma table. And establishing a gamma table by comparing the gray scales of the standard gamma curve and the luminance characteristic curve.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: April 22, 2014
    Assignees: Innocom Technology (Shenzhen) Co., Ltd., Chimei Innolux Corporation
    Inventor: Jian-Feng Wang