Intensity Or Color Driving Control (e.g., Gray Scale) Patents (Class 345/690)
  • Patent number: 10789875
    Abstract: The invention provides a pixel matrix display device, which includes a timing controller, a data driving unit, a scan driving unit and a pixel matrix; the pixel matrix includes a plurality of sub-pixels arranged in a matrix; the timing controller is configured to acquire an original signal input data, and convert the original signal input data into a first grayscale data and a second grayscale data; the scan driving unit is configured to load a scan signal to the pixel matrix; and within a frame, the data driving unit is configured to load a first grayscale driving voltage corresponding to the first grayscale data or a second grayscale driving voltage corresponding to the second grayscale data to the pixel matrix along a direction of each data line; wherein, an aspect ratio a/b of the sub-pixel satisfies the relationship: 0.675?a/b?1.48.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: September 29, 2020
    Assignee: XIANYANG CAIHONG OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventors: Yusheng Huang, Yuan-Liang Wu, Yuyeh Chen
  • Patent number: 10789900
    Abstract: A display device includes: a data driver for driving a plurality of data lines; a voltage generator for generating at least one driving voltage to be provided to the data driver; and a driving controller for providing a second image signal and a reference gamma selection signal to the data driver in response to a first image signal and a control signal received from the outside, wherein the driving controller outputs a voltage control signal for changing a voltage level of the at least one driving voltage, and the reference gamma selection signal, based on metadata included in the first image signal, and the data driver receives the reference gamma selection signal and the at least one driving voltage to provide, to the plurality of data lines, data voltage signals corresponding to the second image signal.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: September 29, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kang-min Kim, Nam-gon Choi, Namheon Kim, Joohwan Park, Jang-mi Lee, Junghwan Yi
  • Patent number: 10789867
    Abstract: A method that includes an initial uniform pixel measurement and interpolation followed by an edge detection algorithm to recognize the areas that contribute mostly to the estimation error due to the interpolation. The pixels on the detected edges and around their vicinity are also measured, and an aging pattern of the entire display is obtained by re-interpolating the entire measured set of data for the initially measured pixels as well as the pixels around the detected edges. The estimation error is reduced particularly in the presence of aging patterns having highly spatially correlated areas with distinctive edges.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: September 29, 2020
    Assignee: Ignis Innovation Inc.
    Inventors: Gholamreza Chaji, Mehdi Torbatian
  • Patent number: 10789902
    Abstract: An electronic device may generate content that is to be displayed on a display. The display may have an array of liquid crystal display pixels for displaying image frames of the content. The image frames may be displayed with positive and negative polarities to help reduce charge accumulation effects. A charge accumulation tracker may analyze the image frames to determine when there is a risk of excess charge accumulation. The charge accumulation tracker may analyze information on gray levels, frame duration, and frame polarity. The charge accumulation tracker may compute a charge accumulation metric for entire image frames or may process subregions of each frame separately. When subregions are processed separately, each subregion may be individually monitored for a risk of excess charge accumulation.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: September 29, 2020
    Assignee: Apple Inc.
    Inventors: Chaohao Wang, Brijesh Tripathi, Christopher Philip Alan Tann, David S. Zalatimo, Guy Cote, Hao Nan, Marc Albrecht, Paolo Sacchetto, Sandro H. Pintz
  • Patent number: 10788909
    Abstract: The present disclosure provides a display panel and display device. Display panel includes: a plurality of first sub-pixel groups and a plurality of second sub-pixel groups, the first sub-pixel group each including a plurality of first sub-pixels, the second sub-pixel groups each including a plurality of second sub-pixels, a contribution value of the first sub-pixels to the illumination brightness of the display panel being greater than that of the second sub-pixels to the illumination brightness of the display panel; a first data line connected to the first sub-pixels in the first sub-pixel group; a second data line connected to the second sub-pixels in the second sub-pixel group; a plurality of touch electrodes and a plurality of touch signal lines, a distance from the touch signal line to its closest second data line being smaller than a distance from the touch signal line to its closest first data line.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: September 29, 2020
    Assignee: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Huangyao Wu, Hongbo Zhou, Xiufeng Zhou, Boping Shen
  • Patent number: 10785465
    Abstract: A head mounted display device includes a display unit divided into at least one first area and at least one second area, a lens unit which supplies an image displayed on the display unit to a user, and a frame which fixes the display unit and the lens unit thereto. The display unit includes a memory which stores first compensation data corresponding to the first area and second compensation data corresponding to the second area, and a position determiner which determines whether first data supplied from an outside belong to the first area or the second area.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: September 22, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Seuk Yoo, Eun Ho Lee, Hyung Jin Kim, Hyun Dae Lee, Woo Seok Han, Hee Chul Hwang
  • Patent number: 10783843
    Abstract: A display panel includes a plurality of sub-pixels each corresponding one color. Each sub-pixel includes a plurality of display units and a plurality of driving sub-circuits that are in one-to-one correspondence with the plurality of display units. Each driving sub-circuit is configured to drive a corresponding one of the plurality of display units to be in a bright state or a dark state. The plurality of driving sub-circuits are configured to drive at least two of the plurality of display units to display different display brightness in the bright state.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: September 22, 2020
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Shuo Li, Zongze He, Zhenghua Lu, Yuxuan Chen, Jianguang Yang, Liang Zhang, Feng Long
  • Patent number: 10783849
    Abstract: A display driver includes a first data voltage output terminal, a first amplifier circuit configured to output a gray scale voltage during a drive time, and to output a first amplifier precharge voltage during a first precharge period, a first precharge line configured to supply a first precharge line voltage, a first amplifier switching element disposed between the first amplifier circuit and the first data voltage output terminal, and a first precharge line switching element disposed between the first precharge line and the first data voltage output terminal.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: September 22, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Jun Ishida, Takeshi Nomura, Akihiko Okuda
  • Patent number: 10782574
    Abstract: An image display device includes a first liquid crystal panel, a second liquid crystal panel which faces a rear surface of the first liquid crystal panel, and a backlight which irradiates a rear surface of the second liquid crystal panel with light. The first liquid crystal panel includes a first front polarizer on a front surface of the first liquid crystal panel, a first rear polarizer on the rear surface of the first liquid crystal panel, and a first liquid crystal cell between the first front and rear polarizers. The second liquid crystal panel includes a second front polarizer on a front surface of the second liquid crystal panel, a second rear polarizer disposed on the rear surface of the second liquid crystal pane, and smaller than the first rear polarizer in top view, and a second liquid crystal cell between the second front and rear polarizers.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: September 22, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hirokazu Nakanishi, Takashi Higashida
  • Patent number: 10777143
    Abstract: A gate driver includes a gate shift register in which an A block and a B block each having a plurality of stages, the A block and the B block being alternately arranged; scan clock lines inputting a first scan clock group and a second scan clock group each including both image data writing (IDW) scan clocks synchronized with an image write timing and black data insertion (BDI) scan clocks synchronized with a black write timing to the A block and the B block; and carry clock lines inputting carry clocks to the A block and the B block and sense clock lines inputting sense clocks to the A block and the B block, wherein each of the stages belonging to the A block and the B block includes a BDI memory storing a BDI carry signal for outputting the BDI scan clocks.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: September 15, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Myungho Ban, Inhyo Han, Seok Noh, Kimin Son
  • Patent number: 10777146
    Abstract: A source driver including a sensing circuit and an operational amplifier is provided. The sensing circuit senses pixel information of an organic light-emitting diode (OLED) pixel circuit. The operational amplifier includes an amplifier circuit and an offset voltage storing and reducing circuit. An input terminal of the amplifier circuit is coupled to the sensing circuit. The amplifier circuit includes a first gain circuit and a second gain circuit. An output terminal of the offset voltage storing and reducing circuit is coupled to a coupling terminal of the first gain circuit. An input terminal of the offset voltage storing and reducing circuit is coupled to an output terminal of the second gain circuit. The offset voltage storing and reducing circuit stores and reduces an offset voltage of the first gain circuit.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: September 15, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chih-Hsien Chou, Po-Yu Tseng, Jhih-Siou Cheng, Jin-Yi Lin
  • Patent number: 10777107
    Abstract: Embodiments of the present application provides an array substrate, testing method and display apparatus. The array substrate comprises a testing circuit, pixel units and data lines connecting to the pixel units. The data lines are used for providing data signals to the pixel units and are arranged to extend along a first direction. The testing circuit comprises a switching unit and testing units. The switching unit comprises a first number of first switching elements parallelly arranged along the first direction, and the testing units are parallelly arranged along a second direction perpendicular to the first direction. By using the present application, performance of substrate testing can be ensured while achieving narrow boarder, and user experiences could be easily improved.
    Type: Grant
    Filed: November 25, 2017
    Date of Patent: September 15, 2020
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Ronglei Dai
  • Patent number: 10777618
    Abstract: A transparent display panel, a method of fabricating the same, and a display device are provided. The transparent display panel comprises a substrate and a plurality of display units. The display units are arranged in an array on the substrate and comprises a display area and a non-display area, where the display area and the non-display area comprise a white organic electroluminescent unit. The white organic electroluminescent unit of the display area comprises a first electrode and a second electrode, the first electrode being a reflective electrode and the second electrode being a transparent electrode. The white organic electroluminescent unit of the non-display area comprises a third electrode and a fourth electrode, where the third electrode and the fourth electrode are both transparent electrodes.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: September 15, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Juanjuan You, Changyen Wu
  • Patent number: 10777147
    Abstract: A regional dimming driving method for a display device is provided. The display device includes multiple backlight sources respectively corresponding to multiple display regions of the display device. The regional dimming driving method includes acquiring a brightness value of each display region according to input image data, processing and adjusting the brightness value of each display region to acquire an adjusted brightness value of regional dimming of each display region, and respectively driving the backlight sources according to the adjusted brightness values of regional dimming of the corresponding display regions. By processing and adjusting the brightness values of the display regions, display effects can be effectively provided.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: September 15, 2020
    Assignee: MEDIATEK INC.
    Inventor: Hui Wu
  • Patent number: 10777167
    Abstract: Color images are adapted for better viewing in ambient light, especially in the presence of screen glare.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: September 15, 2020
    Assignee: Sergey N. Bezryadin
    Inventor: Sergey N. Bezryadin
  • Patent number: 10777114
    Abstract: In one embodiment, the control integrated circuit includes a gate driver configured to selectively drive a plurality of gate lines associated with pixels in a display panel; a source driver configured to supply data to the display panel; and a controller configured to generate switch control signals for controlling a switch driver of the display panel, the switch driver for selectively supplying the data to a plurality of data lines. The controller is configured to control the gate driver and generate the switch control signals such that the plurality of gate lines are activated non-sequentially, and an order of pixels activated and associated with a same one of the plurality of data lines includes at least two pixels of a same color activated in sequence.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: September 15, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Bae Moon, Jeongpyo Kim, Kiho Kong, Jeehwal Kim
  • Patent number: 10777628
    Abstract: Disclosed is a display device, including: a substrate including a pixel area and a peripheral area; pixels provided in the pixel area as a plurality of pixel rows and a plurality of pixel columns; data lines configured to provide a data signal; scan lines configured to provide a scan signal; first power lines configured to provide a power source to the pixel columns; and a second power line connected to the first power lines and disposed in the peripheral area. A scan line connected to an ith pixel row may apply a scan signal to the ith pixel row, and a branched line branched from the scan line may apply an initialization signal to a kth pixel row (k?i). A branched point of the scan line is disposed between a pixel most adjacent to the second power line of the ith pixel row and the second power line.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: September 15, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yang Wan Kim, Jae Yong Lee, Sun Ja Kwon, Hyun Ae Park, Byung Sun Kim, Su Jin Lee, Hyung Jun Park, Yu Jin Jeon
  • Patent number: 10769980
    Abstract: Disclosed are a tiled display and an optical compensation method thereof. The tiled display includes a color coordinate compensation circuit configured to convert color coordinates of pure color data to be displayed in display panels into target color coordinates having a color gamut smaller than a color gamut defined in color coordinates of each of display panels, and convert the pure color data into a data combination of two or more different colors.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: September 8, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Daehyun Kim, Junyoung Huh
  • Patent number: 10768464
    Abstract: A vehicle display device includes a display that emits a display image projected on a windshield provided outside as display light, two reflective mirrors that are disposed on a light path of the display light from the display to the windshield and reflect the display light, an optical sensor that detects the external light entering from an opening communicating between the outside and an internal space, and a controller configured to execute temperature decreasing operation of the display for decreasing a temperature thereof when the optical sensor detects the external light. The optical sensor is disposed at a position to which external light directed toward the display via the reflective mirror is reflected by the display to be directed.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: September 8, 2020
    Assignee: YAZAKI CORPORATION
    Inventors: Yuta Miyake, Kenji Yagi, Naohisa Murata, Hidetoshi Mukojima
  • Patent number: 10769995
    Abstract: Disclosed are a display device and a panel compensation method of the display device. The panel compensation method of the display device includes a step of allowing at least one line pixel of a display panel to be a current source that generates a pixel current with the same value, and a step of correcting a deviation between all current sensing paths of a source driver by using the pixel current with the same value and correcting a characteristic deviation between all pixels after correcting the deviation between the current sensing paths.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: September 8, 2020
    Assignee: Silicon Works Co., Ltd.
    Inventors: Kyung Jik Min, Won Kab Oh, Su Hun Yang, Jeong Hie Choi
  • Patent number: 10769987
    Abstract: A display device includes first pixels in a first pixel region and connected to first scan lines and second pixels in a second pixel region connected to second scan lines. The second pixel has a width less than the first pixel region. The display device also includes a first scan driver to supply first scan signals to the first scan lines, a second scan driver to supply second scan signals to the second scan lines, a first signal line to supply a first driving signal to the first scan driver and the second scan driver, and a signal delay circuit connected to the first signal line to delay the first driving signal.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: September 8, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Kyu Lee, Tae Hoon Kwon, Min Ku Lee, Ji Hyun Ka, Jin Tae Jeong, Seung Ji Cha
  • Patent number: 10768455
    Abstract: A data compensation method and apparatus for a liquid crystal display screen are described herein. Said method comprises determining a timing length ?T? from the last turn-off of the liquid crystal display screen upon turn-on of the liquid crystal display screen, and determining a mura data compensation table am called at the time of the last turn-off; determining a mura data compensation table to be called at the time of the present turn-on according to a pre-set time length T needed for stabilization of mura, mura data compensation tables corresponding to pre-set different time periods, said timing length ?T?, and said mura data compensation table am; performing data compensation starting from the determined mura data compensation table to be called at the time of the present turn-on. By using said method for data compensation, an appropriate initial data compensation table can be determined to obtain a better compensation effect.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: September 8, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Luqiang Guo, Liugang Zhou, Shou Li, Jianming Wang, Shuhuan Yu, Chenxi Liu, Jian Zhang
  • Patent number: 10762830
    Abstract: A display apparatus includes a light source, a light amount control unit configured to control an amount of light emitted from the light source, an image processing unit configured to control a signal level of the image signal, and a control unit configured to control the light amount control unit and the image processing unit based on the image signal. The control unit performs control such that, when the image signal changes, the signal level of the image signal controlled by the image processing unit becomes a signal level corresponding to the changed image signal more quickly than the light amount controlled by the light amount control unit reaches a light amount corresponding to the changed image signal.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: September 1, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ikuo Takanashi, Tatsuya Kimoto
  • Patent number: 10761368
    Abstract: An electronic apparatus using a liquid crystal display device, a display control method used in the liquid crystal display device, and a non-transitory recording medium for storing a display control program, sets a region having a larger area of an information display region and a background region as a transmission region and a region having a smaller area as a shielding region in an illumination mode. A tint change of the shielding region caused by a TN type liquid crystal and a light source for backlight is reduced, and thus, it is possible to make the tint change depending on the viewing direction unremarkable.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: September 1, 2020
    Assignee: FUJIFILM Corporation
    Inventor: Kosuke Takahashi
  • Patent number: 10762860
    Abstract: A display driver comprises image processing circuitry and drive circuitry. The image processing circuitry is configured to output display image data representing a display image comprising an effective area to be displayed in a display area of a display panel and an invalid area not to be displayed in the display area. The drive circuitry drives the display panel based on the display image data comprising effective pixel data associated with first pixels included in the effective area and invalid pixel data associated with second pixels included in the invalid area. Effective pixel data associated with first pixels located within a boundary area adjacent to the invalid area is set to first grayscale values. The invalid pixel data associated with second pixels located within an insert area defined in the invalid area is set to second grayscale values comprising a value different from the first grayscale values.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: September 1, 2020
    Assignee: SYNAPTICS INCORPORATED
    Inventors: Tomoo Minaki, Hirobumi Furihata, Takashi Nose
  • Patent number: 10762827
    Abstract: According to an embodiment, in a display device, pixels have memories respectively. A signal supply circuit includes a mode control circuit, and switches into a first mode or a second mode to supply digital data pieces to sub-pixels. In the first mode, the circuit receives from the outside first video data pieces corresponding to n sub-pixels, and supplies digital data pieces for the n sub-pixels to corresponding memories. In the second mode, the signal supply circuit receives from the outside second video data pieces corresponding to m sub-pixels fewer than n sub-pixels, and supplies digital data pieces for the n sub-pixels to corresponding memories based on the second video data pieces.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: September 1, 2020
    Assignee: Japan Display Inc.
    Inventors: Takayuki Nakao, Takehiro Shima
  • Patent number: 10762845
    Abstract: A compensation method for an electroluminescent display panel, a driving device, a display device, and a storage medium are provided. The compensation method includes: receiving a first display data signal; performing an optical compensation operation on the first display data signal to obtain a second display data signal; performing an electrical compensation operation on the second display data signal to obtain a third display data signal; and outputting the third display data signal for display.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: September 1, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Ming I Chu, Zhongyuan Wu, Fei Yang, Song Meng, Danna Song
  • Patent number: 10761582
    Abstract: A computer system comprising: a graphics processor, a display controller comprising a display-local frame buffer, a display device, and a memory. The memory stores instructions, that when executed by the computer system, perform a method of entering a power management state. The method comprises detecting that the computer system is idle and optional proximity detector for determining if a user is present in front of the system. With the computer system idle, and the user in proximity of the system, the display-local frame buffer is activated. Display information transmitted by the graphics processor is stored in the display-local frame buffer. Initially a power reduction state is initiated for the graphics subsystem including the graphics processor, and the display device is placed in a self-refresh state with the display self-refreshing from information stored in the local frame buffer.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: September 1, 2020
    Assignee: Nvidia Corporation
    Inventors: David Wyatt, Rambod Jacoby
  • Patent number: 10762850
    Abstract: A display device includes a display area to display an image in different areas, the display area including first, second, and third pixel areas that are sequentially arranged, first pixels and first scan lines in the first pixel area, second pixels and second scan lines in the second pixel area, third pixels and third scan lines in the third pixel area, a first scan driver to drive the first scan lines, a second scan driver to drive the second scan lines, and a third scan driver to drive the third scan lines, wherein the second scan lines are sequentially driven, and the third scan lines are driven for a first period during which the second scan lines are driven, and the first scan lines are driven by the first scan driver for a second period, which is after the first period, during which the second scan lines are driven.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: September 1, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Moo Choi, Jae Du Noh, Seung Yeon Cho
  • Patent number: 10762825
    Abstract: Disclosed is a gamma correction circuit and method capable of minimizing power consumption by adding third and fourth input amplifiers receiving reference voltages which are identical to voltages to first and second input amplifiers, respectively, and deactivating the first and second input amplifiers during an always on display (AOD) mode. The gamma correction circuit includes a first input amplifier configured to output a maximum voltage when active, a second input amplifier configured to output a minimum voltage when active, a third input amplifier configured to output a highest gamma voltage in response to the first reference voltage, and a fourth input amplifier configured to output a lowest gamma voltage in response to the second reference voltage. The first and second input amplifiers are deactivated when the display driving device operates in the AOD mode.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: September 1, 2020
    Assignee: DB HiTek Co., Ltd.
    Inventors: Kyoung-Tae Kim, Seung-Jin Yeo, Mun-Gyu Kim, Jae-Hong Ko
  • Patent number: 10762609
    Abstract: A driving circuit configured to receive metadata and image signals, the driving circuit comprising: a meta-data parsing circuit configured to parse the metadata and output parsed metadata; an image analyzing and data processing circuit configured to analyze the image signals based on the parsed metadata and output a parameter and data signals; a reference voltage selector configured to output a reference voltage selection signal based on the parameter and the parsed metadata; a grayscale voltage generator configured to select a plurality of reference voltages in response to the reference voltage selection signal and generate a plurality of grayscale voltages based on the selected reference voltages; and an output circuit configured to convert the data signals to data voltage signals based on the grayscale voltages.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: September 1, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventor: Myungwoo Lee
  • Patent number: 10762843
    Abstract: A display system includes a display panel comprising a plurality of pixel circuits, and a measurement and data processing unit that is external to the display panel. Each pixel circuit includes a light-emitting device having a first terminal connected to a first voltage supply and a second terminal opposite from the first terminal; a first transistor connected between a data voltage supply line from the measurement and data processing unit and the second terminal of the light emitting device; and a second transistor connected between the second terminal of the light-emitting device and a sample line to the measurement and data processing unit. The measurement and data processing unit samples a measured voltage at the second terminal of the light-emitting device through the sample line and outputs a data voltage to the light-emitting device based on the measured voltage to compensate variations in properties of the light-emitting device.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: September 1, 2020
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tong Lu, Michael James Brownlow, Tim Michael Smeeton
  • Patent number: 10757415
    Abstract: A method of converting 10-bit pixel data (e.g. 10:10:10:2 data) into 8-bit pixel data involves converting the 10-bit values to 7-bits or 8-bits and generating error values for each of the converted values. Two of the 8-bit output channels comprise a combination of a converted 7-bit value and one of the bits from the fourth input channel. A third 8-bit output channel comprises the converted 8-bit value and the fourth 8-bit output channel comprises the error values. In various examples, the bits of the error values may be interleaved when they are packed into the fourth output channel.
    Type: Grant
    Filed: June 29, 2019
    Date of Patent: August 25, 2020
    Assignee: Imagination Technologies Limited
    Inventors: Ilaria Martinelli, Jeff Bond, Simon Fenney, Peter Malcolm Lacey, Gregory Clark
  • Patent number: 10755650
    Abstract: The present disclosure provides a display driving method. The display driving method includes: acquiring an original light source intensity of each of hues of a content to be displayed in a preset display area; setting a driving light source intensity in the display area to be three times of the original light source intensity; acquiring an original gray scale data group of each of pixel units of the content to be displayed in the preset display area; and dividing the original gray scale data group into a first gray scale data group, a second gray scale data group, and a third gray scale data group according to the original gray scale data group of each of the pixel units.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: August 25, 2020
    Assignee: HKC CORPORATION LIMITED
    Inventor: Jianfeng Shan
  • Patent number: 10755655
    Abstract: A source driver and an operation method thereof are provided. The source driver includes a chopper circuit and a source driver circuit. A first sub-pixel and a second sub-pixel are temporally or spatially adjacent to each other. The chopper circuit adds original gray-scale data of the first sub-pixel with a first value to serve as new gray-scale data of the first sub-pixel and deducts original gray-scale data of the second sub-pixel by a second value to serve as new gray-scale data of the second sub-pixel. The source driver circuit generates a first driving voltage for the first sub-pixel according to the new gray-scale data of the first sub-pixel and generates a second driving voltage for the second sub-pixel according to the new gray-scale data of the second sub-pixel.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: August 25, 2020
    Assignee: Novatek Microelectronics Corp.
    Inventors: Jen-Wei Li, Jen-Hao Liao
  • Patent number: 10755664
    Abstract: A display device and method of driving the same are provided. The display device includes a data modulator generating image data from an image signal provided from an outside, a data driver generating and outputting a data signal according to the image data, and a display panel displaying an image by using the data signal, wherein the data modulator comprises a current controller including a plurality of switching elements connected in parallel.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: August 25, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kwang-Min Kim, Yeong-seok Choe
  • Patent number: 10755640
    Abstract: Electronic devices, storage medium containing instructions, and methods pertain to determining a target boosted threshold voltage level based at least in part on a target emission threshold voltage level. Using the determined target boosted threshold voltage level, a light emitting diode (LED)-controlling transistor is submitted to voltage stress to boost a threshold voltage of the transistor to the target boosted threshold voltage level during a first portion of a refresh period between first and second emission periods. During a second portion of the refresh period, the voltage stress is de-asserted to settle the threshold voltage to a target emission threshold voltage level for the second emission period. After the voltage is settled, the LED-controlling transistor is driven based at least in part on the target emission threshold voltage level.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: August 25, 2020
    Assignee: Apple Inc.
    Inventors: Jiayi Jin, Paolo Sacchetto, Maofeng Yang, Weijun Yao
  • Patent number: 10755647
    Abstract: An organic light emitting display device includes a driving transistor having one electrode connected with a node, and another electrode connected with an organic light emitting element, a first control transistor for receiving a first driving voltage through one electrode, and having another electrode connected with the node, a second control transistor for receiving a second driving voltage through one electrode, and having another electrode connected with the node, and a sensing transistor having one electrode connected between the another electrode of the driving transistor and the organic light emitting element, wherein the sensing transistor is turned on in a sensing period, the first control transistor is turned off in the sensing period, and the second control transistor is turned on in the sensing period.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: August 25, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung Hwan Kim, Cheol Min Kim, Sung Hoon Bang
  • Patent number: 10748467
    Abstract: A display panel, a display method thereof and a display device are provided. The display panel includes a display area, a non-display area separated from the display area by the special-shape edge, and a driver chip, wherein the display area includes first pixels proximate to the special-shape edge, and second pixels away from the special-shape edge, and the first pixel is divided into a first part in the display area and a second part in the non-display area; and for the first pixel, the driver chip is configured: to determine a target grayscale value G of each first pixel according to G=255*K(1/2.2); and to replace the current grayscale value corresponding to the first pixel in the current grayscale database of the display panel with the target grayscale value G, to form a target grayscale database.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: August 18, 2020
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Hualing Yang, Lina Liu
  • Patent number: 10748483
    Abstract: A drive control circuit, a driving method thereof and a display device are provided. The drive control circuit includes a drive integrated circuit, a transmit control circuit, a scan drive circuit, and a pixel circuit. The drive integrated circuit adjusts a duty cycle of a drive signal to generate a first drive signal and transmits the first drive signal to the transmit control circuit. The drive integrated circuit decreases the amplitude of a data signal to generate a first data signal and transmits the first data signal to the scan drive circuit. The transmit control circuit converts the received first drive signal into a second drive signal with a preset duty cycle and transmits the second drive signal to the pixel circuit. The preset duty cycle of the second drive signal is greater than the duty cycle of the drive signal to be outputted.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: August 18, 2020
    Assignee: Kunshan Go-Visionox Opto-Electronics Co., Ltd.
    Inventors: Xinquan Chen, Xiangqian Wang, Xiujian Zhu, Mingwei Ge, Zheng Wang
  • Patent number: 10748496
    Abstract: The disclosure relates to a driving method and a driving device for a display panel, and a display device, wherein the driving method includes dividing a plurality of pixel units of the display panel into a plurality of pixel groups, wherein each pixel group includes three columns of continuously arranged pixel units; applying a drive voltage opposite to a polarity of a first position pixel unit to a second position pixel unit and a third position pixel unit in a same pixel group respectively; applying drive voltages of opposite polarities to every adjacent two columns of the sub-pixels in a same column of the pixel units respectively, and applying drive voltages of different voltage levels to the sub-pixels in the first pixel units and the sub-pixels in the second pixel units respectively; wherein the first pixel units and the second pixel units are adjacently disposed in the display panel.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: August 18, 2020
    Assignee: HKC CORPORATION LIMITED
    Inventor: Bei Zhou Huang
  • Patent number: 10748478
    Abstract: The invention provides an OLED panel temperature compensation system and method. The system comprises an OLED panel and a processing module connected to the OLED panel, the OLED panel is disposed with a temperature sensor layer of a plurality of temperature sensors on one side or inside; when performing temperature compensation, the temperature sensor detects the temperature of the location and transmits to the processing module, the processing module receives and processes the initial data signals of the plurality of sub-pixels to obtain the to-be-displayed brightness of the plurality of sub-pixels, and receives and processes the temperatures from the plurality of temperature sensors to obtain the temperatures of the plurality of sub-pixels, and generates and outputs compensation data signals corresponding to the plurality of sub-pixels according to the to-be-displayed brightness and temperature of the plurality of sub-pixels. The OLED panel is thus accurately and effectively compensated for temperature.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: August 18, 2020
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Yufeng Jin
  • Patent number: 10748481
    Abstract: A gate driver and a display device including the same are discussed. The gate driver includes a plurality of stages. Each stage includes a transistor T1 configured to apply a start signal to a node Q, a transistor Tu configured to output an emission signal of a gate low voltage to a node Na depending on a voltage of the node Q, a transistor T5 configured to control a voltage of a node QB to be reversed to the voltage of the node Q, a transistor Td configured to output the emission signal of a gate high voltage higher than the gate low voltage to the node Na depending on the voltage of the node QB, and a transistor Tbv connected between the transistor T1 and the node Q and configured to stabilize the voltage of the node Q.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: August 18, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Joonki Kim, Kyuhan Yoon, Sangjin Kim
  • Patent number: 10748490
    Abstract: An organic light-emitting diode (OLED) compensation circuit, a display panel and a display apparatus are provided. The OLED compensation circuit includes a first transistor, a second transistor, a third transistor, a fourth transistor, a storage capacitor and an OLED element. For the first transistor, a gate electrode is electrically connected to a first scanning signal line, a first electrode electrically connected to a data signal line, and a second electrode electrically connected to a first node. For the second transistor, a gate electrode is electrically connected to a first light-emitting control signal line, a first electrode electrically connected to a first voltage signal line, and a second electrode electrically connected to a second node. For the third transistor, a gate electrode is electrically connected to the first node, a first electrode electrically connected to the second node, and a second electrode electrically connected to a third node.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: August 18, 2020
    Assignee: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Haojie Xu, Xingyao Zhou, Yue Li, Yana Gao
  • Patent number: 10741125
    Abstract: Embodiments of the present disclosure provide a pixel unit and a driving method thereof, a display panel and a driving method thereof, and a display apparatus. The pixel unit comprises a driving sub-circuit, a first switching sub-circuit, a second switching sub-circuit, and a light-emitting element. The driving sub-circuit has a first terminal electrically coupled to a first power supply terminal, and a second terminal electrically coupled to a first terminal of the light-emitting element. The first switching sub-circuit has an inputting terminal electrically coupled to a data line, an outputting terminal electrically coupled to an inputting terminal of the second switching sub-circuit, and a controlling terminal electrically coupled to a scanning line. The second switching sub-circuit has an outputting terminal electrically coupled to an inputting terminal of the driving sub-circuit.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: August 11, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Shengji Yang, Xue Dong, Jing Lv, Xiaochuan Chen, Minghua Xuan, Can Zhang, Ming Yang, Yan Li, Xiaoling Xu
  • Patent number: 10741618
    Abstract: A method for driving a pixel structure is disclosed. The pixel structure is divided into a number of target pixel unit groups each equivalent to a theoretical pixel unit group. A color component of each sub-pixel in the target pixel unit group is determined according to a color component of each sub-pixel in the corresponding theoretical pixel unit group. In the present invention, the conventional pixel structure is compressed to render a color component of at least one sub-pixel in the target pixel unit group equivalent to a maximum value or an average value of color components of two sub-pixels in the corresponding theoretical pixel unit group, such that at least one sub-pixel in the target pixel unit group undertakes functions of two sub-pixels in the corresponding theoretical pixel unit group.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: August 11, 2020
    Assignee: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD.
    Inventor: Xinquan Chen
  • Patent number: 10741588
    Abstract: An electronic device may include a display having an array of display pixels on a substrate. The display pixels may be organic light-emitting diode display pixels or display pixels in a liquid crystal display. In an organic light-emitting diode display, hybrid thin-film transistor structures may be formed that include semiconducting oxide thin-film transistors, silicon thin-film transistors, and capacitor structures. The capacitor structures may overlap the semiconducting oxide thin-film transistors. Organic light-emitting diode display pixels may have combinations of oxide and silicon transistors. In a liquid crystal display, display driver circuitry may include silicon thin-film transistor circuitry and display pixels may be based on oxide thin-film transistors. A single layer or two different layers of gate metal may be used in forming silicon transistor gates and oxide transistor gates. A silicon transistor may have a gate that overlaps a floating gate structure.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: August 11, 2020
    Assignee: Apple Inc.
    Inventors: Vasudha Gupta, Jae Won Choi, Shih Chang Chang, Tsung-Ting Tsai, Young Bae Park
  • Patent number: 10733927
    Abstract: A projection apparatus includes an inputting unit configured to input image data that expresses an image to be projected; a converting unit configured to convert pixel values of the image data into first parameters that indicate lightness and second parameters that indicate information concerning color; a determining unit configured to determine whether to invert the first parameters; an inverting unit configured to invert the first parameters to calculate third parameters if the determining unit has determined to invert the first parameters; a generating unit configured to generate inverted data based on the second parameters and the third parameters; and a projecting unit configured to project the image based on the inverted data.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: August 4, 2020
    Assignee: Ricoh Company, Ltd.
    Inventor: Masaki Nose
  • Patent number: 10735820
    Abstract: An electronic device and a method for controlling the electronic device are provided. The method includes acquiring an image comprising a guide member positioned in an area at which a display device is to be installed; displaying the acquired image; analyzing a background area of the acquired image, the background area being positioned within the guide member in the acquired image; and acquiring information about a background image that is to be displayed in the background area of the acquired image.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: August 4, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Soo-hong Kim, Su-won Shin, Ki-suk Kim
  • Patent number: 10733958
    Abstract: A circuit for performing demura operation for a display panel of a computerized device is provided. The circuit includes an arithmetic unit for converting input luminance codes (e.g., grayscale codes) that correspond to a first group of pixels to output luminance codes by computation, and a lookup table unit having a storage module for mapping input luminance codes that correspond to a second group of pixels to output luminance codes. Such a configuration uses the lookup table unit to replace some computations for demura operation, thereby reducing time and power required for demura operation.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: August 4, 2020
    Inventor: Hung-Cheng Kuo