Intensity Or Color Driving Control (e.g., Gray Scale) Patents (Class 345/690)
  • Patent number: 9997131
    Abstract: A display driver integrated circuit is disclosed. The display driver integrated circuit includes panel signal supply circuitry configured to supply an image signal corresponding to image data to a panel, pixel power supply circuitry configured to supply pixel power to a pixel that receives the image signal, and a controller configured to control the pixel power supply circuitry to supply the pixel power based on an on-pixel ratio (OPR) value of the image data.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: June 12, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong Hui Kim, Young Hee Ha
  • Patent number: 9997098
    Abstract: An organic light emitting diode display device includes a display panel including pixels that each include an organic light emitting diode; a logo area detection unit detecting a logo area of the display panel; and a data signal modulation unit applying a first data signal to at least one pixel in the logo area during at least one frame and applying a second data signal to the at least one pixel in the logo area during another frame, wherein a first brightness corresponding to the first data signal is higher than a reference brightness of the at least one pixel in the logo area, a second brightness corresponding to the second data signal is lower than the reference brightness, and an average of the first brightness and the second brightness every frame is equal to the reference.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: June 12, 2018
    Assignee: LG Display Co., LTD
    Inventor: Min-Chul Byun
  • Patent number: 9997114
    Abstract: A display device includes a display section (11) having a first display surface and a second display surface (S1, S2) facing each other. The display section (11) includes a first display panel (111) disposed on the first display surface (S1) side, and including a plurality of light emitting elements, and a second display panel (112) disposed on the second display surface (S2) side, and including a plurality of light control elements each performing light control for control of transmission or reflection of incident light performing reflective image display utilizing the reflection of the incident light.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: June 12, 2018
    Assignee: SONY CORPORATION
    Inventors: Yukinori Hidaka, Ken Ootsuka, Naoto Kinoshita
  • Patent number: 9989765
    Abstract: A display device includes a two-dimensional array of tiles. Each tile includes a two-dimensional array of pixels, and a lens, of a two-dimensional array of lenses, configured to direct at least a portion of the respective pattern of light from the two-dimensional array of pixels to a pupil of an eye of a user. Each pixel is configured to output light so that the two-dimensional array of pixels outputs a respective pattern of light. The display device also includes one or more processors coupled with the two-dimensional array of tiles and configured to activate at least a subset of the two-dimensional array of tiles for outputting, from at least the subset of the two-dimensional array of tiles, a collective pattern of light that is directed to the pupil of the eye of the user.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: June 5, 2018
    Assignee: OCULUS VR, LLC
    Inventor: Mary Lou Jepsen
  • Patent number: 9992844
    Abstract: A power supply circuit has a first voltage converter and a second voltage converter. The first voltage converter generates a first power supply voltage having a first voltage level based on an input voltage. The first power supply voltage drives a first power node of a display in a first mode. The second voltage converter generates a second power supply voltage having a second voltage level based on the input voltage. The second power node is driven by the second power supply voltage in the first mode and is driven by a ground voltage in a second mode.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: June 5, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventor: Sung-Chun Park
  • Patent number: 9989818
    Abstract: Provided are display device. According to an aspect of the present invention, there is provided a display device comprising a first substrate, a gate wiring which is formed on the first substrate and extends in a first direction, a data wiring which is insulated from the gate wiring, intersects the gate wiring, and extends in a second direction, and a pixel electrode which comprises a first subpixel electrode to which a first data voltage is applied from the data wiring and a second subpixel electrode to which a second data voltage lower than the first data voltage is applied from the data wiring, wherein the first subpixel electrode is surrounded by the second subpixel electrode, and the second subpixel electrode does not overlap the data wiring.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: June 5, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Jin Jeon, Sang Uk Lim, Mee Hye Jung
  • Patent number: 9984661
    Abstract: An image displaying method and system. The method includes: obtaining an image to be displayed, and dividing equally the image to be displayed into a plurality of first sub-images along a first direction; obtaining position information of a view point relative to the flat display and parameter information of a first virtual section line segment of the flat display; calculating a compensation ratio along the first direction for each first sub-image of the image to be displayed, according to the position information of the view point relative to the flat display and the parameter information of the first virtual section line segment; and compensating each first sub-image of the image along the first direction, and displaying the compensated first sub-image on the flat display, so that visual angles at the view point with respect to the compensated first sub-images are the same.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: May 29, 2018
    Assignees: SHANGHAI AVID OPTO ELECTRONICS CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventor: Huijun Jin
  • Patent number: 9984631
    Abstract: An organic light emitting display device includes: data lines and auxiliary data lines, scan lines and light emission control lines crossing the data lines and the auxiliary data lines, a display area including display pixels formed at crossing regions of the data lines, the scan lines, and the light emission control lines, a non-display area including auxiliary pixels formed at crossing regions of the auxiliary data lines, the scan lines, and the light emission control lines, and auxiliary lines connected to the auxiliary pixels. Each of the auxiliary pixels may include: an auxiliary pixel driver configured to supply a driving current to a corresponding one of the auxiliary lines, and an auxiliary transistor connected to the corresponding one of the auxiliary lines and to a first power voltage line, configured to transmit a first power voltage from the first power voltage line, in response to a control signal.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: May 29, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventor: Kyong-Tae Park
  • Patent number: 9983841
    Abstract: A multiscreen display is formed in which changes in luminance between an image overlap area and areas outside the image overlap area are less visible across a range of low to high gradations. An offset correction value Doffset that is linearly decreased at the lowest gradation of the input image signal so that the offset correction value becomes 0 at gradations higher than the predetermined gradation Lset, is added to an input image signal.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: May 29, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akihiro Ouchi
  • Patent number: 9978334
    Abstract: A present disclosure provides a driving method for a liquid crystal display panel having steps of: the control chip simultaneously outputs a first selecting signal on a first voltage level, a second selecting signal on the first voltage level and a third selecting signal on the first voltage level to control the first transistors, the second transistors and the third transistors connecting between the buffers and each pixel column to be turned on; the buffers output a pre-charge signal to charge the sub-pixel units in each pixel column to the pre-charge voltage. Further, the present disclosure also provides a liquid crystal display device. The driving method for a liquid crystal display panel is effectively reduces the power consumption of the liquid crystal display device.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: May 22, 2018
    Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd, Wuhan China Star Optoelectronics Technology Co., Ltd
    Inventors: Chunpeng Guo, Jiehui Qin, Xiaoping Tan
  • Patent number: 9977172
    Abstract: A light guide plate (LGP) and a display device are disclosed. The LGP comprises at least one mesh point; each mesh point is provided with a plurality of microstructures; and all the microstructures on each mesh point are arranged on the same curved surface. The LGP can solve the problem that incident light is subjected to total reflection in the LGP so that the luminous uniformity of the LGP can be improved.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: May 22, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BOE OPTICAL SCIENCE AND TECHNOLOGY CO., LTD.
    Inventors: Nuowei Gong, Boran Zheng, Shanfei Xu
  • Patent number: 9972260
    Abstract: A display device including a processor that includes a first display mode in which the processor displays the image on the display screen; and a second display mode in which the processor displays the image on the display screen from the image data received by the processor. The display device further includes a calculator that calculates a blanking period between a writing end time point of the internal image data corresponding to a final frame immediately before switching from the first display mode to the second display mode and a writing start time point of the image data corresponding to an initial frame immediately after switching from the first display mode to the second display mode, and an adjuster that adjusts at least one of a vertical retrace period, a horizontal retrace period, and a clock frequency, which correspond to the internal image data, depending on the blanking period.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: May 15, 2018
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Toshiki Onishi, Iwane Ichiyama, Tatsuhiro Inuzuka
  • Patent number: 9964839
    Abstract: Even when a high-performance imaging apparatus is not used, luminance unevenness and color unevenness of an image (video) projected on a projection plane by the projection type projector apparatus are appropriately reduced. Using a coefficient Br (0?Br?1) set by a coefficient setting unit, the projection system obtains, based on the gamma characteristic of the entire system of the projection system, a target image for reducing the number of pixels saturated when the image is projected. Then, the projection system performs correction processing using the obtained target image based on the gamma characteristic of the entire system of the projection system and a white value. This reduces the number of saturated pixels of the projected image in the projection system.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: May 8, 2018
    Assignees: MegaChips Corporation, The University of Electro-Communications
    Inventors: Naoki Hashimoto, Chiharu Kohari, Yuki Haraguchi, Fumiya Shingu, Motoyasu Tanaka
  • Patent number: 9965990
    Abstract: A display apparatus includes a display panel including a first pixel configured to include first and second sub-pixels and a second pixel configured to include third and fourth sub-pixels. A timing controller generates pixel data including first and second pixel data respectively corresponding to the first and second pixels and representable in a second matrix space, from pixel signals including first and second pixel signals representable in a first matrix space to respectively correspond to the first and second pixels. The timing controller generates the second pixel data on the basis of the first pixel signal adjacent to the second pixel signal which correspond to each second pixel data in the column direction in the first matrix space.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: May 8, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seokyun Son, Jai-hyun Koh, Kuk-hwan Ahn, Iksoo Lee
  • Patent number: 9966036
    Abstract: A plurality of data signals to be supplied to a first pixel and a second pixel formed by a first sub-pixel, two second sub-pixels, and two third sub-pixels on the display panel are rendered. Input data corresponding to a first sampling window with respect to the second sub-pixel of the first pixel among the input data applied to the stripe pattern is used to render a second data signal supplied to the second sub-pixel through filtering sampled input data for a color of the second sub-pixel. The first data signal to be supplied to the first sub-pixel is rendered through filtering of the input data of a second window unit for a color of the first sub-pixel with respect to the first sub-pixel of the first pixel among the sampled input data.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: May 8, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Geun-Young Jeong, Jong-Woong Park, Joo-Hyung Lee
  • Patent number: 9965993
    Abstract: A plurality of pixel circuits provided in a display apparatus respectively include light-emitting elements OLED, first transistors that supply driving currents to the light-emitting elements, second transistors that turn on and off connection between data lines and gates of the first transistors, and third transistors. The display apparatus has first holding capacitors that are spectively inserted and connected midway on the plurality of data lines and shift levels of driving voltages of the first transistors, and holding capacitors that respectively hold potentials of the plurality of data lines. N first holding capacitors are arranged in a column direction Y, each of the first holding capacitors having an electrode width that is smaller than a width of N pixel circuits arranged adjacent to each other in a row direction X, and that is equal to or larger than a width of one pixel circuit.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: May 8, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tsuyoshi Tamura, Takeshi Nomura
  • Patent number: 9966039
    Abstract: The present disclosure provides a method and a device for modulating image display quality of a display device. The method includes: debugging a display device to a modulation state, so that a common voltage of the display device corresponding to a predetermined gray level is a standard voltage; and modulating a common voltage of the display device corresponding to other controllable gray level into a preset value, wherein there is a first preset relationship between the preset value and the standard voltage.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: May 8, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Wengang Su, Daekeun Yoon, Weihao Hu, Lei Liu, Yangbing Yu
  • Patent number: 9966024
    Abstract: The occurrence of flicker is effectively suppressed particularly in a liquid crystal display device that performs low-frequency driving. Provided are a gradation-to-voltage value conversion table for converting a gradation to a voltage value, a correction value map for storing a correction value, and a voltage value-to-gradation conversion table for converting a voltage value to a gradation. A gradation of an input image signal is converted to a first voltage value, using the gradation-to-voltage value conversion table. The correction value specified in accordance with a location of a pixel to be processed is added to or subtracted from the first voltage value so that a second voltage value is obtained. The second voltage value is converted to an output gradation, using the voltage value-to-gradation conversion table. A driving video signal is applied to a source bus line, based on the output gradation.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: May 8, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Ken Inada, Taketoshi Nakano, Asahi Yamato, Akizumi Fujioka
  • Patent number: 9959800
    Abstract: A voltage compensation circuit and A method thereof are provided. The voltage compensation circuit includes a power management chip, a feedback circuit, and a control circuit. A gate driving voltage (VGH) connects an input end of the control circuit, the input end of the control circuit connects to a first end of the fifth resistor (R5), and a second end of the fifth resistor (R5) connects to a forward input end of the voltage comparator, and first ends of the sixth resistor (R6) and the first capacitor (C1). A second end of the sixth resistor (R6) and a second end of the first capacitor (C1) are grounded, a backward input end of the voltage comparator connects to the reference voltage (VREF), an output end of the voltage comparator connects to a gate of the first FET (Q1). With such configuration, the display performance may be enhanced.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: May 1, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Xianming Zhang, Dan Cao
  • Patent number: 9961273
    Abstract: Disclosed are a mobile terminal and a shooting method thereof. The shooting method comprises the steps of: collecting, by a camera, image data continuously; conducting an addition operation on the current image data and the past image data, so as to generate a synthetic image; and displaying the synthetic image in real time. Thus, an image superposition technique is adopted to simulate long-time exposure, which adds a light painting function to a mobile terminal, so that a user can use the light painting function of the mobile terminal to conduct artistic creation, and can preview the creation effect in real time, thereby improving the user experience.
    Type: Grant
    Filed: August 30, 2014
    Date of Patent: May 1, 2018
    Assignee: NUBIA TECHNOLOGY CO., LTD.
    Inventors: Junmin Jiang, Rong Jin
  • Patent number: 9959821
    Abstract: In a liquid crystal display device, a drive unit is controlled in a direction of eliminating a polarity bias of a data voltage corresponding to image data at a point of time when a refresh signal for updating an image displayed on a display unit by periodical refreshment or forced refreshment is generated, and the polarity bias is obtained for each of subsequent frame periods. In this manner, not only the polarity bias after the point of time when the refresh signal is generated is obtained so that the polarity bias at the point of time when the refresh signal is generated is eliminated, but also the polarity bias is repeatedly obtained in the same way every time the refresh signal is generated, and accordingly, the polarity bias can be prevented from being increased.
    Type: Grant
    Filed: September 1, 2014
    Date of Patent: May 1, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kentaroh Uemura, Norio Ohmura, Tatsuhiko Suyama, Noriyuki Tanaka
  • Patent number: 9953586
    Abstract: A liquid crystal display device and a driving method thereof are disclosed. The method for driving the liquid crystal display device comprises the following steps: converting three primary color gray-scale data of a frame image to be displayed into multiple color gray-scale data; and driving different sub pixels according to the overdrive gray-scale values that are obtained through inquiring the overdrive table based on the multiple color gray-scale data of the frame image to be displayed according to a certain time sequence in two color fields. According to the method, the color shift phenomena of the traditional liquid crystal display device can be alleviated effectively.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: April 24, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Yong Fan, Chih Tsung Kang
  • Patent number: 9953721
    Abstract: Embodiments of the present invention provide a gate driver circuit, a touch display device and a touch display driving method. The gate driver circuit includes a plurality of GOA unit groups arranged successively and control units arranged between every two adjacent GOA unit groups, each of the GOA unit groups comprising a plurality of shift registers which are cascaded. The control unit is configured to output a start control signal at a high level to a signal input end of a first stage shift register of a next GOA unit group corresponding thereto, after a last stage shift register of a previous GOA unit group corresponding thereto completes driving for a corresponding gate line and a predetermined time elapses, so as to pre-charge the first stage shift register of the next GOA unit group.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: April 24, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Lei Ma, Dong Yang
  • Patent number: 9952264
    Abstract: A display may have a substrate layer to which a display driver integrated circuit and flexible printed circuit are bonded. The display driver integrated circuit may be provided with switches and control circuitry for controlling the operation of the switches during bond resistance measurements. Test equipment may apply currents to pads in the display driver integrated circuit through contacts in the flexible printed circuit while controlling the switching circuitry. Based on these measurements and the measurement of trace resistances in a dummy flexible printed circuit, the test equipment may determine bond resistances for bonds between the display driver integrated circuit and the display substrate and between the flexible printed circuit and the display substrate. Displays may have master and slave display driver integrated circuits that share coarse reference voltages produced by the master from raw power supply voltages.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: April 24, 2018
    Assignee: Apple Inc.
    Inventors: Kingsuk Brahma, David A. Stronks, Hopil Bae, Wei H. Yao
  • Patent number: 9940881
    Abstract: Techniques for driving a dual modulation display include generating backlight drive signals to drive individually-controllable illumination sources. The illumination sources emit first light onto a light conversion layer. The light conversion layer converts the first light into second light. The light conversion layer can include quantum dots or phosphor materials. Modulation drive signals are generated to determine transmission of the second light through individual subpixels of the display. These modulation drive signals can be adjusted based on one or more light field simulations. The light field simulations can include: (i) a color shift for a pixel based on a point spread function of the illumination sources; (ii) binning difference of individual illumination sources; (iii) temperature dependence of display components on performance; or (iv) combinations thereof.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: April 10, 2018
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Ajit Ninan, Chun Chi Wan
  • Patent number: 9940863
    Abstract: A display device according to example embodiments includes: a display panel including a plurality of pixels configured to display an image; a gamma voltage generator configured to generate a plurality of gamma sets respectively corresponding to a plurality of luminance ranges, and configured to compare a target luminance level with the luminance ranges to select a target gamma set among the gamma sets, and to generate a plurality of gamma voltages using the target gamma set, the target luminance level being a luminance level of the image; a first dimming controller configured to scale input image data based on the target luminance level; a second dimming controller configured to determine an off duty ratio of an emission signal based on the target luminance level; and a display panel driver configured to drive the display panel based on the input image data and the gamma voltages.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: April 10, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventor: Bo-Young An
  • Patent number: 9940867
    Abstract: A level shift circuit configured to generate an output signal having higher amplitude than that of an input signal. The level shift circuit includes serially-connected first and second level shift circuit for two-step amplitude increase of the input signal. The first level shift circuit includes first to fourth transistors, each of which has a control terminal and first and second current terminals, and first and second resistance elements respectively connected between the first and third transistors, and between the second and fourth transistors. A potential difference between two ends of each resistance element is respectively smaller than, or no smaller than, a respective predetermined potential difference when a current does not flow, or flows, therethrough. The second level shift circuit has fifth to tenth transistors, each of which has a control terminal and first and second current terminals.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: April 10, 2018
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventor: Hiroshi Tsuchi
  • Patent number: 9940902
    Abstract: An automatic brightness adjustment for devices with displays includes the capability to assess ambient light. The assessment may be made using circuitry, such as a light meter circuit, by exploiting exposure control circuitry, or using other approaches. The ambient light value is sent to a brightness adjustment driver, which may employ a look-up table to keep track of brightness adjustments for particular ambient conditions. The look-up table may include distinct adjustment values.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: April 10, 2018
    Assignee: Intel Corporation
    Inventor: Cynthia S. Bell
  • Patent number: 9939895
    Abstract: An image displaying system includes: a display device, a detection device and an image compensating chip. The detection device obtains position information of a view point relative to the display device, and an angle of sight line; the image compensating chip divides equally the image to be displayed into a plurality of first sub-images along a first reference direction, calculates a compensation ratio along the first reference direction for each first sub-image, and compensates each first sub-image along the first reference direction; the first virtual section line segment has two endpoints located on the frame of the display device, is extended along the first reference direction, and passes through an intersection of the sight line and the display device; the display device displays the compensated image, so that the compensated first sub-images are viewed as having the same size along the first reference direction.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: April 10, 2018
    Assignees: SHANGHAI AVIC OPTO ELECTRONICS CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventor: Huijun Jin
  • Patent number: 9939952
    Abstract: An organic light emitting display device is provided. The organic light emitting display device includes a conductive pattern of which impedance varies due to damage or heat generation of a panel and senses the damage or heat generation of the panel by using the conductive pattern.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: April 10, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: EungKyu Kim, SinKyun Park
  • Patent number: 9934728
    Abstract: An AMOLED pixel driving circuit has a 5T1C structure, which includes a first, a second, a third, a fourth, and a fifth thin film transistors, a capacitor, and an organic light emitting diode (OLED). The first thin film transistor is a drive thin film transistor. A first global signal, a second global signal, and a scan signal are fed, with various combinations thereof, for various operations of the circuit in an initialization stage, a data writing stage, a threshold voltage compensation stage, and a drive stage. The data writing stage and the threshold voltage compensation stage are carried out simultaneously for effectively compensating threshold voltage variation of the drive thin film transistor and the organic light emitting diode to make the display brightness of the AMOLED uniform and to promote the display quality.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: April 3, 2018
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Baixiang Han, Yuanchun Wu
  • Patent number: 9928784
    Abstract: A gradation correction map generating unit generates a gradation correction map based on a brightness unevenness map, a rotation unevenness map, and a second gamma characteristic. The brightness unevenness map indicates a correspondence relation between a plurality of positions in a screen of a display unit, and uncorrected brightness values, the uncorrected brightness values being brightness values at time of performing no correction when the display unit is installed at a predetermined angle. The rotation unevenness map indicates a correspondence relation between the plurality of positions or other plurality of positions, and differences in brightness values corresponding to a rotation angle of the display unit. The second gamma characteristic indicates a correspondence relation between a brightness value at a specific position in the screen, and a gradation of an image signal.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: March 27, 2018
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Katsuyuki Matsui
  • Patent number: 9928780
    Abstract: The present invention proposes an AMOLED driving device. The AMOLED device includes an AMOLED driving circuit, a scan driving signal source, a data driving signal source, and a data driving signal source control module. The AMOLED driving circuit includes a first semiconductor controllable switch, a second semiconductor controllable switch, an energy storage capacitor, and an organic light emitting diode.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: March 27, 2018
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yichien Wen
  • Patent number: 9928782
    Abstract: A four-primary-color organic light emitting display comprises: a display panel where a plurality of first-color pixels, second-color pixels, third-color pixels, and fourth-color pixels are disposed; and a data drive circuit that has a single, digital-to-analog converter to generate first- to fourth-color data voltages and to apply the first-color data voltage to the first-color pixels, the second-color data voltage to the second-color pixels, the third-color data voltage to the third-color pixels, and the fourth-color data voltage to the fourth-color pixels. Herein, the maximum grayscale voltages for the first- to fourth-color data voltages are adjusted to be different on a single gamma graph defined as the input grayscale versus output voltage.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: March 27, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Osung Do, Kyoungdon Woo, Seokhyun Hong
  • Patent number: 9922604
    Abstract: Provided is a display panel, a display device and a display method. The display panel can include a plurality of sub pixel columns including sub pixel columns arranged sequentially in a first direction, and the sub pixel columns can be formed by a plurality of sub pixels of the same color arranged sequentially. At least one sub pixel column is in a zigzag line formed by repeat units that repeat in a second direction. Each of the repeat units can include a first segment to a sixth segment that are connected successively. The first, third and fifth segments can be parallel to a diagonal direction of the sub pixel, and the second, fourth and sixth segments can be parallel to the other diagonal direction of the sub pixel. A better display effect can be provided.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: March 20, 2018
    Assignees: Xiamen Tianma Micro-Electronics Co., Ltd., Tianma Micro-Electronics Co., Ltd.
    Inventors: Chunyan He, Zhaodong Zhang, Taichi Chen
  • Patent number: 9916795
    Abstract: A display having a spatial light modulator for dynamically controlling a luminance of each pixel according to an input signal, the spatial light modulator having a non uniform spatial characteristic, the display also having an optical filter having a spatial pattern to alter the luminance to compensate at least partially for the non uniform spatial characteristic. An electronic signal processing element applies some pre compensation predominantly of higher spatial frequencies for the non uniform spatial characteristic. Such dynamic and optical compensation can enable tuning for different optimizations or for compensating for variations over time. A backlight has an optical source and an optical filter, the source having a color output which has a non uniform spatial characteristic, and the optical filter having a spatial pattern to alter the color to compensate in part at least for the non uniform spatial characteristic.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: March 13, 2018
    Assignee: BARCO N.V
    Inventors: Gerrit Verstraete, Tom Kimpe
  • Patent number: 9916787
    Abstract: This application sets forth systems, methods, and apparatus for improving charge settling times for lines and pixels of a display panel. The charge settling times are improved by providing an over drive signal and a bias current to a line and/or pixel of the display panel based a comparison of content data to be output by the display panel. In this way, by initially charging the line and/or pixel with the over drive signal, the line and/or pixel can be fully charged more quickly in display panels that operate at higher refresh rates.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: March 13, 2018
    Assignee: APPLE INC.
    Inventors: Fenghua Zheng, Paolo Sacchetto
  • Patent number: 9916806
    Abstract: A liquid crystal display apparatus includes a gamma mapping unit configured to receive red, green, and blue image information from an external device. During the first field, the gamma mapping unit generates first to third data signals for controlling the first to third pixels based on the red, green, and blue image information in synchronization with the backlight unit. During the second field, the gamma mapping unit generates fourth and fifth data signals for controlling the first and second pixels based on at least one of the first to third data signals or based on the red, green, and blue image information. As the quantity of the second color light leaked is adjusted through the first and second color filters in the second field, a color reproduction range and brightness of the liquid crystal display panel are improved. Thus, the display quality of the liquid crystal display apparatus is improved.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: March 13, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Min Cho, Jae Byung Park, Seon-Tae Yoon, Kwangkeun Lee, Jaehyun Cho
  • Patent number: 9910265
    Abstract: An electrowetting display comprises a first support plate and a second support plate opposite to the first support plate. A plurality of electrowetting elements is provided between the first support plate and the second support plate. A first fluid is disposed within the electrowetting elements on the first support plate, and a second fluid is disposed on the first fluid. The second fluid is substantially immiscible with the first fluid. A plurality of color filter elements arranged in an array and a black matrix structure are disposed on the second support plate. The black matrix structure is positioned such that the black matrix is offset in at least one direction with respect to the electrowetting elements.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: March 6, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Gerben Boon, Karel Johannes Gerhardus Hinnen, Daniel Figura
  • Patent number: 9911387
    Abstract: A display apparatus includes a display panel in which a plurality of pixel units are disposed, a backlight providing light to the display panel, and a data processing circuit receiving image signals and providing the image signals to the plurality of pixel units. The data processing circuit sets a luminance level of the backlight to a value corresponding to a color gamut boundary of the image signals adjacent to a saturation region.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: March 6, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Heendol Kim, Jai-hyun Koh, Hyunkyu Namkung, Seokyun Son, Kuk-hwan Ahn, Iksoo Lee
  • Patent number: 9907143
    Abstract: A lighting control device which controls a lighting device, and includes: a feature quantity calculator which calculates a feature quantity of image content to be reproduced and projected by an image reproducing device; and a lighting controller which controls light emission of the lighting device based on the feature quantity calculated by the feature quantity calculator.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: February 27, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akihiro Kishimoto, Kentaro Yamauchi, Tatsumi Setomoto, Kohji Hiramatsu, Ryo Kawamura
  • Patent number: 9905171
    Abstract: Correction processing is provided for a display having pixel circuits respectively including a display element and a drive transistor that is configured to provide a drive current to the display element according to a luminance information value. A control transistor is disposed on a current path that provides the drive current to a unit pixel group that includes two or more of the pixel circuits, and a correction processing section is configured to obtain a correction factor that is a function of the luminance information values respectively corresponding to each of the pixel circuits in the unit pixel group, and to perform a correction of the luminance information value for at least one of the pixel circuits in the unit pixel group based on the correction factor.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: February 27, 2018
    Assignee: Sony Corporation
    Inventors: Gaku Izumi, Seiichiro Jinta
  • Patent number: 9905762
    Abstract: A display substrate and a fabricating method thereof, and a system for fabricating a display substrate and a display device are disclosed. The display substrate includes a plurality of pixels, each of which includes a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel arranged in a first direction. The fourth sub-pixel in a first pixel is adjacent to the first sub-pixel in a second pixel, and that the second pixel is adjacent to the first pixel and at a side of the first pixel in the first direction. The fourth sub-pixel in the first pixel is adjacent to the second sub-pixel in a third pixel, and the third pixel is adjacent to the first pixel and at a side of the first pixel in a second direction perpendicular to the first direction.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: February 27, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventor: Zhen Wang
  • Patent number: 9905148
    Abstract: The present disclosure discloses a voltage compensation circuit and the method thereof. The voltage compensation circuit includes a power management chip, a feedback circuit, and a control circuit. A gate driving voltage (VGH) connects an input end of the control circuit, the input end of the control circuit connects to a first end of the fifth resistor (R5), and a second end of the fifth resistor (R5) connects to a forward input end of the voltage comparator, and first ends of the sixth resistor (R6) and the first capacitor (C1). A second end of the sixth resistor (R6) and a second end of the first capacitor (C1) are grounded, a backward input end of the voltage comparator connects to the reference voltage (VREF), an output end of the voltage comparator connects to a gate of the first FET (Q1). With such configuration, the display performance may be enhanced.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: February 27, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Xianming Zhang, Dan Cao
  • Patent number: 9900947
    Abstract: The present invention discloses a backlight, a regulation method thereof, a regulation device and a display device. The backlight comprises a driving unit, a register, a PWM unit and a light-emitting unit, the PWM unit is connected between the driving unit and the light-emitting unit, and the register is connected to the PWM unit. The driving unit is used for converting a voltage signal to a primary driving signal; the register is used for defining a preset threshold value, which is the maximum value of duty ratio of a signal that the PWM unit outputs when performing a PWM process; the PWM unit is used for regulating duty ratio of the primary driving signal according to the preset threshold value and generating a regulated driving signal; and the light-emitting unit is used for emitting light when being driven by the regulated driving signal.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: February 20, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Jialong Li, Hao Zhang, Lingyun Shi, Xue Dong, Di Wang, Wei Wang, Qingfang Bian, Shuai Han
  • Patent number: 9898969
    Abstract: Low frequency drive is performed that provides, after a charging period for refreshing a screen, a pause period for pausing the refresh. The length of the charging period is, for example, one frame and the length of the pause period is, for example, 59 frames. When new image data IMD is transmitted from a host to an LCD driver IC during the pause period, an interrupt process where the pause period is allowed to transition to the charging period is performed immediately thereafter. By performing the interrupt process, without waiting for the pause period with the predetermined length to end, the next charging period where refresh based on the new image data IMD is to be performed starts.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: February 20, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shinsuke Yokonuma, Hajime Washio
  • Patent number: 9900586
    Abstract: A 3D image display device includes a display device including a plurality of pixels and displaying each of a left-eye image and a right-eye image. The display device inserts an black image between the left-eye image and the right-eye image such that the left-eye image is displayed for part of four frames and the black image is displayed for the remaining frames and the right-eye image is displayed for part of four other frames and the black image is displayed for the remaining other frames.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: February 20, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jai-Hyun Koh, Bong-Hyun You, Jae-Sung Bae
  • Patent number: 9891749
    Abstract: The present disclosure provides a driving circuit and a driving method for a touch device, a touch device and a display device. The driving circuit includes an operational amplifier and a control circuit. A negative input terminal of the operational amplifier is connected with a touch-sensing electrode included in the touch device, and a positive input terminal of the operational amplifier is connected with the control circuit. The control circuit is to, at a touch stage, adjust a voltage at the positive input terminal of the operational amplifier to be within a first predetermined voltage range so as to control the touch-sensing electrode to implement a touch sensing operation, and at a display stage, adjust the voltage at the positive input terminal of the operational amplifier to be within a second predetermined voltage range so as to shield external static electricity.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: February 13, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Weijie Zhao, Xue Dong, Haisheng Wang, Yingming Liu
  • Patent number: 9892682
    Abstract: A first gamma offset corresponding to a first gamma reference voltage is determined by performing a multi-time programmable (“MTP”) operation with respect to a first reference gray value, a second gamma offset corresponding to a second gamma reference voltage is determined by performing the MTP operation with respect to a second reference gray value greater than the first reference gray value, a base gamma offset is determined by performing the MTP operation with respect to a base reference gray value smaller than the first reference gray value. and low gray voltages corresponding to low gray values smaller than the first reference gray value are generated based on the base gamma offset, the first gamma offset and the second gamma offset.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: February 13, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Si-Beak Pyo
  • Patent number: 9892694
    Abstract: A method for improving luminance uniformity of a 3D liquid crystal display in 3D displaying, comprising: acquiring transmittance of each of n predetermined regions of a liquid crystal display panel, wherein n is a positive integer; adjusting original luminance of each region; and calculating luminance of backlight corresponding to each region according to the transmittance and the adjusted luminance of each region. A system for improving luminance uniformity of a 3D liquid crystal display in 3D displaying is also disclosed. The system improves the luminance uniformity of the 3D liquid crystal display in 3D displaying by compensating for backlight of each of regions of the liquid crystal display panel, so that the luminance of the liquid crystal display panel in 3D displaying that is actually felt by eyes may not be un-uniform.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: February 13, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Wei Fu, Wei Chen