Gray Scale Capability (e.g., Halftone) Patents (Class 345/89)
  • Patent number: 11402633
    Abstract: A head-up display device, a method for controlling the same, and a vehicle are provided. The head-up display device includes a display component, a first optical component, a second optical component, and a synthesizing component. The light in different polarization directions or states can be transmitted or reflected by the first optical component, so that state information projection light and augmented reality information projection light can be separated from each other to thereby be dual-layer displayed. For example, augmented reality information can be displayed at a longer distance from eyes of a driver so that the focus of the human eyes does not need to be adjusted frequently to thereby make it comforter to view the information so as to eliminate a hidden risk.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: August 2, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventor: Tao Hong
  • Patent number: 11398199
    Abstract: A liquid crystal display device, a driving system thereof, and a driving method thereof are provided. A driving method includes: receiving display data of a next frame of image; determining whether the next frame of image includes a specific graph according to the gray scale information of each pixel; if the next frame of image includes the specific graph, determining information to be compensated according to positions of the first pixel section and the second pixel section, a quantity of the first pixels or a quantity of the second pixels and the difference value between the first gray scale and the second gray scale, where the information to be compensated includes a position of an area to be compensated and a compensation level of the area to be compensated; and generating a compensated driving voltage according to the position of the area to be compensated.
    Type: Grant
    Filed: November 17, 2021
    Date of Patent: July 26, 2022
    Assignees: Wuhan BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Lijun Xiao, Feng Jiang, Mengchao Shuai, Junmin Zhang, Hangyu Chen, Meng Feng, Jianmin Xiang, Bing Li
  • Patent number: 11398202
    Abstract: Display apparatuses, data drivers and display controller are provided. The data drivers receive video signals, generate positive-polarity and negative-polarity gradation data signals with respect to a predetermined reference voltage based on the video signals, output the positive-polarity gradation data signals to one of a first and a second data line groups, and output the negative-polarity gradation data signals to the other data line group. The data drivers generate, as the positive-polarity gradation data signals, signals in which data pulses each having a positive-polarity analog voltage value corresponding to a luminance level of each pixel based on the video signal appear in predetermined cycles, and generate, as the negative-polarity gradation data signals, signals where data pulses each having a negative-polarity analog voltage value corresponding to a luminance level of each pixel appear in each predetermined cycle with phases different from the positive-polarity gradation data signals.
    Type: Grant
    Filed: July 26, 2020
    Date of Patent: July 26, 2022
    Assignee: LAPIS Semiconductor Co., Ltd.
    Inventors: Hiroshi Tsuchi, Keigo Otani
  • Patent number: 11393393
    Abstract: A display device and an operating method of the display device are provided. The display device may include: a first transistor controlled by a first control signal to connect an input terminal to which an input voltage is applied and a first node; a second transistor controlled by a second control signal to connect a second node to which a power supply voltage is outputted and the first node; an overcharge recognition circuit configured to receive a first reference voltage, a feedback voltage, and a second reference voltage, to determine whether it is overcharged, and to output an overcharge recognition signal; and a discharge circuit configured to provide a first discharge path for discharging the power supply voltage based on an enable signal generated depending on the overcharge recognition signal.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: July 19, 2022
    Inventors: Dong Kwan Han, Sung Chun Park
  • Patent number: 11393850
    Abstract: The present application discloses an array substrate and a display panel, which includes gate on array (GOA) signal lines disposed in a film layer of the array substrate and driving signal lines disposed on a surface of the array substrate. The GOA signal lines are electrically connected to the driving signal lines by through holes. The through holes are correspondingly disposed on the GOA signal lines, and the through holes are disposed on the GOA signal lines according to an area ratio.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: July 19, 2022
    Inventor: Xing Ouyang
  • Patent number: 11393416
    Abstract: The present disclosure provides a method for backlight control, a display device, an electronic device and a computer readable storage medium. The display device may include a backlight module and a display unit. The backlight module includes backlight partitions. The method comprises: determining, with respect to a current frame image, a first backlight brightness value for each backlight partition; determining a scene type of the current frame image according to the first backlight brightness value and a ratio of black regions in the current frame image; obtaining an actual backlight brightness value for each of the plurality of the backlight partitions with respect to the current frame image, by processing the first backlight brightness value according to the scene type determined; and driving the backlight module with the actual backlight brightness value, so as to adjust the backlight brightness for each backlight partition in the backlight module.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: July 19, 2022
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Mingyang Yan, Chenxi Zhao, Jinghua Miao, Yukun Sun, Wenyu Li, Zhifu Li, Hao Zhang, Lili Chen
  • Patent number: 11386859
    Abstract: A polarity compensation device and a polarity compensation method are provided. The polarity compensation device includes a variance calculation circuit and a compensation calculation circuit. The variance calculation circuit calculates a difference value between current sub-pixel data and previous sub-pixel data in the same frame period, wherein the current sub-pixel data and the previous sub-pixel data belong to the same data line of a display panel. The compensation calculation circuit converts the difference value into a function value. The compensation calculation circuit decides to increase or decrease the current sub-pixel data by the function value according to a polarity corresponding to the same frame period, so as to generate compensated sub-pixel data.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: July 12, 2022
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventor: Tung-Ying Wu
  • Patent number: 11386822
    Abstract: The present disclosure discloses a BD cell display panel, a manufacturing method and a driving method thereof, and a display device. The BD cell display panel includes a main cell and a sub cell which are stacked, an XPCBA plate and a control plate. The control plate is configured to read the pixel offset amount and the mura compensation data from the XPCBA plate, and adjust at least one of the first display area and the second display area according to the pixel offset amount, thus causing pixels in the first display area and the second display area that are orthogonally projected within an actual display area of the BD cell display panel to be displayed, and compensating for the mura in the main cell and the sub cell according to the mura compensation data.
    Type: Grant
    Filed: October 28, 2021
    Date of Patent: July 12, 2022
    Assignees: Fuzhou BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Jinfeng Chen, Nani Liu, Yifeng Su, Xiaoli Kong, Qibiao Lin, Xuening Zhao, Weiming Yu, Wenjian Yao, Zhe Huang
  • Patent number: 11373608
    Abstract: A display panel and a display device are provided, and the display panel includes a circuit layer and a pixel layer disposed over the circuit layer. The pixel layer includes a first region used to form a first sub-pixel and a second region used to form a second sub-pixel. The ability of light to pass through the liquid crystal molecules over the first and second subpixels sequentially decreases. The circuit layer includes a driving circuit disposed opposite to the first region, and a difference between image brightness above the first region and image brightness of above the second region is within a predetermined range.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: June 28, 2022
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Yunglun Lin
  • Patent number: 11373593
    Abstract: A display device includes a display panel including a plurality of data lines, a plurality of gate lines, and a plurality of pixels and a compensating data generator configured to sense a sensing driving current of the pixel in an Nth frame and a target driving current of the pixel in an (N+M)th frame, and to calculate an over driving data that allows the sensing driving current to be the same with the target driving current by changing a data voltage of the Nth frame when a sensing image having a first grayscale in a (N?1)th frame and having a second grayscale in the Nth frame and the (N+M)th frame, where N is an integer greater than or equal to 2, and M is an integer greater than or equal to 1.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: June 28, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sunghoon Bang, Min-Seok Bae, Wooseok Han
  • Patent number: 11367405
    Abstract: A spliced display panel and a method of compensating the spliced display panel for a mura phenomenon are disclosed. In the method, secondary compensation values are obtained through a secondary compensation formula and initial compensation values in order to compensate spliced regions of the spliced display panel for the second time.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: June 21, 2022
    Inventor: Xiang Gao
  • Patent number: 11361722
    Abstract: The present application discloses a driving method, a construction method for a compensation table and a display device. The driving method includes steps of: generating a plurality of first gate drive signals and a plurality of second gate drive signals, driving scanning lines to turn on sequentially or non-sequentially in a group of two, and generating corresponding data driving signals to drive corresponding pixels, where the first gate drive signals are output to the first turned-on scanning lines in each group, the second gate drive signals are output to the last turned-on scanning lines in each group, and the high-level duration of the first gate drive signals is T+?t.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: June 14, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventors: Dongsheng Guo, Haijiang Yuan, Yubo Gu
  • Patent number: 11361700
    Abstract: A driving chip for a display panel is provided. The display panel includes a plurality of subpixels arranged at a display region, the display region is provided with a boundary extended by a non-straight line, and the plurality of subpixels includes first subpixels separated from the boundary by a distance substantially smaller than a predetermined threshold and second subpixels other than the first subpixels. The driving chip includes: an adjustment circuit configured to, when the display panel is in a predetermined display mode, adjust a first grayscale value of at least a part of the first subpixels in original image data into a second grayscale value substantially smaller than the first grayscale value; a driving circuit configured to drive the at least a part of first subpixels in accordance with the second grayscale value to display an image.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: June 14, 2022
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Rui Liu, Wei Sun
  • Patent number: 11341915
    Abstract: A gamma voltage compensation circuit, a gamma voltage compensation method, a source driver, and a display panel are provided. The gamma voltage compensation circuit includes: a generation circuit, configured to generate a plurality of voltage compensation amounts which are in one-to-one correspondence to a plurality of standard gray scale levels; a calculation circuit, connected to the generation circuit, and configured to acquire the plurality of voltage compensation amounts and a plurality of reference gamma voltages, and to obtain a plurality of standard voltage signals based on the plurality of reference gamma voltages and the plurality of voltage compensation amounts; a gamma circuit, electrically connected to the calculation circuit, and configured to generate a plurality of compensation voltage signals based on the plurality of standard voltage signals, in which the plurality of compensation voltage signals are in one-to-one correspondence to a plurality of gray scale levels of a display panel.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: May 24, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Xinshe Yin
  • Patent number: 11325398
    Abstract: In an image processing device, a controller performs: acquiring target image data representing a target image; inputting first and second datasets into a machine learning model and causing the machine learning model to output first and second partial dot data; and generating dot data specifying a dot formation state for each of a plurality of pixels in a print image corresponding to the target image using the first and second partial dot data. The first dataset includes first partial image data and a first value for an input parameter. The second dataset includes second partial image data and a second value for the input parameter. The machine learning model outputs the second partial dot data different from the first partial dot data according to the second value being different from the first value even when the second partial image data is identical to the first partial image data.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: May 10, 2022
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Koki Furukawa, Masaki Kondo
  • Patent number: 11328650
    Abstract: A driver, a display device, and an optical compensation method thereof are provided. The display panel includes sub-pixels arranged in an array. The method includes: receiving an initial gray level of each sub-pixel of a picture to be displayed; determining whether each sub-pixel satisfies a preset determination condition based on the initial gray level of each sub-pixel; if an absolute value of a difference between the initial gray levels of two sub-pixels electrically connected to a same data line and located in two adjacent rows is greater than a preset threshold, it is determined that a sub-pixel in a next row satisfies the preset determination condition; and, in response to determining that a sub-pixel satisfies the preset determination condition, acquiring a first compensation parameter of the sub-pixel, and compensating the initial gray level of the sub-pixel based on the acquired first compensation parameter.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: May 10, 2022
    Assignees: Beijing BOE Display Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yan Yang, Chinghua Hung, Wenchieh Huang, Rui Liu, Wei Sun, Ming Chen
  • Patent number: 11330276
    Abstract: Systems and methods for improving computer technology related to the rendering and encoding of images are disclosed, preferably for use in a video-game environment. In certain embodiments, a codec is used to encode one or more reference images for a partial range of encoder settings and a renderer is used to generate one or more rendering quality-settings profiles, generate one or more reference images, calculate perceived qualities for each of the one or more reference images, re-render the one or more reference images for each of the one or more rendering quality-setting profiles, and calculate perceived qualities for each of the one or more re-rendered reference images. The renderer compares the perceived qualities of the reference images to the perceived qualities of the re-rendered images and matches them. Those matches result in an association of one or more encoder settings with their matching rendering quality-settings profiles into a look-up table.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: May 10, 2022
    Assignee: ZeniMax Media Inc.
    Inventor: Michael Kopietz
  • Patent number: 11315484
    Abstract: A display apparatus includes: a display panel comprising a plurality of pixels configured to display an image based on input image data; a gate driver configured to output a gate signal to the display panel; a data driver configured to output a data voltage to the display panel; a light source part configured to provide light to the display panel and comprising a plurality of light sources; and a light source driver configured to drive the light source part, wherein a first light source of the light source part is configured to output a first luminance in an active period defined by the data voltage being output to the pixel and a second luminance greater than the first luminance in an inactive period defined by the data voltage is not being output to the pixel.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: April 26, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jinpil Kim, Hoisik Moon
  • Patent number: 11308891
    Abstract: Discussed is a display device including an organic light emitting diode display panel where sub pixels adjacent to each other along a direction of a gate line are paired and arranged to share a single data line. In order for the sub pixels to be driven according to a DRD method, a timing controller aligns image data and transmits the aligned image data to a data driver so that same-colored sub pixels continue to emit light based on a unit of a plurality of predetermined horizontal periods, and generates gate and data control signals and supplies the control signals to the gate and data drivers so that a predetermined driving period of the sub pixels is changed.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: April 19, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hyunwoo Byun, Byungchan Song
  • Patent number: 11302267
    Abstract: A driving device and an operation method thereof are provided. The driver device includes a source driver circuit, an output switching circuit, and an equalization control circuit. Two input ends of the output switching circuit are coupled to two output ends of the source driver circuit. Two output ends of the output switching circuit are coupled to two data lines of an LED display panel. The equalization control circuit checks whether sub-pixel data of the two data lines meets a predetermined condition. A plurality of sub-pixels located on a current display line of the LED display panel are reset in a reset period. In a data scanning period after the reset period, the equalization control circuit determines whether to control the output switching circuit to perform an equalization operation on the two data lines according to the checking result.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: April 12, 2022
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chun-Hung Chen, Chia-Hsin Tung, Hsin-Hung Ou, Hung-Yi Lin
  • Patent number: 11302253
    Abstract: An EL display apparatus is provided. A display screen includes pixels arranged in a matrix, with each pixel including an EL device and a pixel circuit. A source driver circuit is configured to output an analog video signal to each pixel. A gate driver circuit is on at least one side of the display screen, with the gate driver circuit including first and second gate driver circuits. Each pixel includes a driving transistor, a first switch transistor, and a second switch transistor. A gate terminal of the first switch transistor is connected to a first gate signal line of the first gate driver circuit, and a gate terminal of the second switch transistor is connected to a second gate signal line of the second gate driver circuit. The first and second switch transistors are on/off controlled, independently, by the first and second gate driver circuits.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: April 12, 2022
    Assignee: JOLED INC.
    Inventors: Hiroshi Takahara, Hitoshi Tsuge
  • Patent number: 11282464
    Abstract: A display device includes a display panel which includes a display area and a non-display area, a plurality of pixels in the display area, and a gate driver connected to at least two of the pixels through a gate line, wherein the gate driver includes a plurality of stages connected to each other and drives the at least two pixels, where each of the plurality of stages includes a first portion of a stage disposed in the non-display area and a second portion of the stage disposed in the display area and connected to the first portion, and the second portion of the stage includes a pull down transistor configured to output a low potential to the gate line.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: March 22, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kee-Bum Park, Hyuk-Jin Kim, Byoung Sun Na
  • Patent number: 11283478
    Abstract: In some aspects, a cellular telephone includes (1) a user interface portion having a communications circuit; and (2) a cellular portion having a first communications circuit adapted to communicate with the communications circuit of the user interface portion and a second communications circuit adapted to communicate with a cellular network. The cellular portion is removably coupled to the user interface portion so as to allow a user of the cellular telephone to communicate over a cellular network by using the user interface portion while the cellular portion is separated from the user interface portion. Numerous other aspects are provided.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: March 22, 2022
    Assignee: Dugan Patents, LLC
    Inventor: Brian M. Dugan
  • Patent number: 11282480
    Abstract: A display driver includes gamma curve control circuitry and a converter controller. The gamma curve control circuitry is configured to generate a first gamma curve for a first display brightness value (DBV), and a second gamma curve for a second DBV lower than the first DBV. The converter controller is configured to control a digital-analog converter (DAC) configured to perform digital-analog conversion of an input image data. Further, the converter controller is configured to adjust an analog signal voltage amplitude of the DAC based on a range of an output voltage associated with the second gamma curve.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: March 22, 2022
    Assignee: Synaptics Incorporated
    Inventors: Hirobumi Furihata, Kazutoshi Aogaki, Tomoo Minaki, Akio Sugiyama, Takashi Nose
  • Patent number: 11270615
    Abstract: An embodiment of the present disclosure relates to a display device allowing minimizing repetitive transmissions and receptions of identical pieces of image data so as to reduce power consumption due to the repetitive transmissions and receptions of identical pieces of image data.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: March 8, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Jung Min Choi, Ju Ho Lee, Jung Hwan Choi
  • Patent number: 11263968
    Abstract: A display substrate, a driving method thereof, and a display device. The display substrate includes: a first display sub-region including a plurality of first repeating regions each including a first pixel unit and a second pixel unit disposed adjacently, the first pixel unit including a first sub-pixel and a second sub-pixel, and the second pixel unit including a second sub-pixel and a third sub-pixel; and a second display sub-region including a plurality of second repeating regions each including a third pixel unit and a first transparent pixel, the third pixel unit including a first sub-pixel, a second sub-pixel and a third sub-pixel; the first transparent pixel is configured such that a pixel density of the second display sub-region is less than a pixel density of the first display sub-region, and a light transmittance of the second display sub-region is greater than a light transmittance of the first display sub-region.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: March 1, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Yanyan Wang, Lujiang Huangfu, Wenjing Tan
  • Patent number: 11252400
    Abstract: Disclosed is a method, performed by a device, of processing an image, the method including: for an original image at a particular time point among a plurality of original images having a sequential relationship in terms of time, determining a cumulative value due to an afterimage of another original image before the particular time point; based on the determined cumulative value and the plurality of original images, obtaining a plurality of blur compensation images for removing a blur caused by the afterimage; and outputting the obtained plurality of blur compensation images.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: February 15, 2022
    Assignees: Samsung Electronics Co., Ltd., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Jungbum Kim, Sungkil Lee, Sangjun Ahn, Yuna Jeong, Sooryum Choi, Yuri Roh, Soyoung Park, Yoonji Choi
  • Patent number: 11238813
    Abstract: A luminance compensation method is provided. The luminance compensation method includes: establishing a time-varying luminance sequence according to an average luminance value of a plurality of sampled display devices in each unit time during an initial start-up period; establishing an operating luminance sequence according to an average operating luminance value of the sampled display devices under a plurality of different driving condition values after the initial start-up period; generating a driving condition value look-up table according to the time-varying luminance sequence and the operating luminance sequence; and obtaining compensation driving condition values in each unit time according to the driving condition value look-up table and the time-varying luminance sequence and accordingly establishing a time-varying compensation sequence, such that a display device drives a backlight module according to the time-varying compensation sequence in each time unit during the initial start-up period.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: February 1, 2022
    Assignee: PEGATRON CORPORATION
    Inventor: Sheng-Fu Kuo
  • Patent number: 11239256
    Abstract: A display substrate includes a first substrate, a first sub-pixel layer and a second sub-pixel layer positioned on the first substrate; the first sub-pixel layer includes a plurality of first sub-pixels, the second sub-pixel layer includes a plurality of second sub-pixels, and a first orthographic projection of the first sub-pixel on the first substrate does not overlap with a second orthographic projection of the second sub-pixel on the first substrate. A display panel, a display device and a method for manufacturing the display substrate are also disclosed.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: February 1, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Dongni Liu, Can Wang, Minghua Xuan, Lei Wang, Li Xiao, Liang Chen, Shengji Yang, Pengcheng Lu, Xiaochuan Chen
  • Patent number: 11219103
    Abstract: A LED dimming method includes obtaining an illumination set according to a preset dimming curve and an initial dimming grayscale set; obtaining an excitation signal set comprising a voltage signal set or a current signal set according to the illumination set; obtaining a measured illumination curve according to the excitation signal set and the initial dimming grayscale set; collecting a subdivision dimming grayscale set according to the measured illumination curve and the preset dimming curve, so that a dimming curve corresponding to the subdivided dimming grayscale set and the illumination set coincides with the preset dimming curve; and adjusting the excitation signal set according to the subdivision dimming grayscale set. The method can achieve an ideal and undistorted optical curve effect to meet the demands of the user, and therefore achieving an efficient and accurate dimming.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: January 4, 2022
    Assignee: GUANGZHOU YAJIANG PHOTOELECTRIC EQUIPMENT CO., LTD.
    Inventors: Rongfeng Huang, Zhiman Chen, Yunchou Chen
  • Patent number: 11186303
    Abstract: Included are a CN serving as a communication unit that receives a screen information item request from an OCC serving as a ground-based central command device, a CCU serving as a controller, and a VDU serving as a display unit. The VDU includes an onboard image display unit that displays the screen information item on the basis of the control performed by the CCU, an image processor that generates first image data by putting the screen information item displayed by the onboard image display unit into image form, and an information adder that generates second image data by adding an identification information item on an operational component to the first image data when an image represented by the first image data includes an image of the operational component that receives an operation from a user. The CN transmits the second image data to the OCC.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: November 30, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ryosuke Goto, Yosuke Isshiki, Yoshihito Takigawa
  • Patent number: 11171264
    Abstract: A light emitting module including a base substrate, a first light emitting diode disposed on the base substrate, and a second light emitting diode disposed on the base substrate and spaced apart from the first light emitting diode, in which each of the first light emitting diode and the second light emitting diode includes a first light emitting region and a second light emitting region, the second light emitting region being spaced apart from the first light emitting region and surrounding the first light emitting region.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: November 9, 2021
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventors: Jong Min Lee, Bang Hyun Kim, Jae Ho Lee
  • Patent number: 11158233
    Abstract: A display device includes a display panel including a pixel, and a panel driver configured to change a length of a gate-on period of a light emission control signal provided to the pixel in a current frame on the basis of a difference between a grayscale of a previous frame and a grayscale of the current frame.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: October 26, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Seung Yong Ko
  • Patent number: 11151917
    Abstract: Disclosed is an electronic device having a variable screen size and in which a degradation boundary may be set based on a total accumulated value. The display having the variable screen size may be partitioned into a plurality of virtual regions, based on the set degradation boundary. Accordingly, the degradation may be compensated with respect to each of the virtual regions.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: October 19, 2021
    Inventors: Youngrog Kim, Jookwan Lee, Junwoo Choi
  • Patent number: 11150515
    Abstract: An image display device includes a circuit board having a surface, partitioning members provided on the surface of the circuit board, a discontinuous portion formed between the partitioning members, light-emitting elements provided on the surface of the circuit board, a liquid crystal panel provided on the partitioning members so that the partitioning members are provided between the liquid crystal panel and the surface of the circuit board, and a control circuit. At least one of the light-emitting elements is provided in each of the partitioning members to be surrounded by each of the partitioning members which is configured to reflect light emitted from the at least one of the light-emitting elements. The control circuit is configured to control the liquid crystal panel to improve uneven light distributions of the light-emitting elements caused by the discontinuous portion.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: October 19, 2021
    Assignee: NICHIA CORPORATION
    Inventor: Michinao Kanayama
  • Patent number: 11145263
    Abstract: Disclosed is a display apparatus. The display apparatus includes a liquid crystal panel including a plurality of subpixels, a backlight unit including a white light source and a blue light source, and a processor configured to adjust the blue light source to emit light and to adjust an aperture ratio of at least one of the plurality of subpixels based on a color temperature of the white light source and a target color temperature.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: October 12, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Minhoon Lee, Jaemoon Lee
  • Patent number: 11145247
    Abstract: A display module Gamma correction method includes: obtaining corrected Gamma register values corresponding to binding points of a grayscale by correcting register values of s binding points selected from a set of m binding points of the grayscale based on a group of initial Gamma register values that correspond to the m binding points and a target Gamma curve; selecting, from x sets of alternate Gamma register values wherein each set corresponds to m binding points and the initial Gamma register values, a set of Gamma register values used for Gamma correction of the display module(s) as reference register values; and; and correcting register values of remaining m?s binding points based on the reference Gamma register values and the target Gamma curve to obtain a set of target Gamma register values corresponding to the m binding points, wherein s, m and x are all integers greater than one.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: October 12, 2021
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xue Jiang, Wei He, Zhiyong Yang, Jing Wang, Liwei Huang, Xiaohong Chen, Lihong Wu
  • Patent number: 11132978
    Abstract: A gamma correction circuit includes an input circuit configured to sequentially receive gamma control signals used for selecting gamma tap points from a control circuit through a single transmission line, and to output the received gamma control signals, and a voltage generator configured to select the gamma tap points based on the gamma control signals, and to generate gamma voltages according to the gamma tap points.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: September 28, 2021
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventors: Myung Woo Lee, Hee Sung Yang
  • Patent number: 11120753
    Abstract: A liquid crystal display and a method for driving same, capable of eliminating large viewing angle color shift of a liquid crystal display having VA liquid crystals. The liquid crystal display includes a liquid crystal panel and a driving module. The liquid crystal panel includes a plurality of liquid crystal pixels (Pab, wherein 1?a?A, 1?b?B, and both a and b are integers) arranged in an array. The liquid crystal display is configured to display a same picture in two adjacent frames. The driving module is used for respectively providing different pixel voltages of the same polarity to each liquid crystal pixel (Pab) in the two adjacent frames to deflect liquid crystal molecules of the liquid crystal pixel (Pab).
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: September 14, 2021
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yu-Jen Chen
  • Patent number: 11114009
    Abstract: Disclosed is a display device including a display panel having a plurality of pixels, each of the pixels including at least two subpixels, the display panel including a first display area and a second display area, the second display area being disposed to overlap an optical module, a memory configured to store shape information of the second display area including position information of a starting point, vertical length information of the second display area, and line-based direction information and width information indicating the border of the second display area, and a controller configured to change an image that is displayed in at least one of the first display area and the second display area using the shape information of the second display area and to perform control such that the changed image is displayed on the display panel.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: September 7, 2021
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Dae Hee Bae, Bo Sung Kim, Jun Hun Park, Ji Hong Yuk, Sung Woo Han, Ji Hoon Choi
  • Patent number: 11107434
    Abstract: A gamma adjustment circuit includes: a first node; a second node; a first decoder to which a first voltage signal and a second voltage signal are provided and which outputs either one of the first voltage signal and the second voltage signal as a third voltage signal; an amplifier receiving the third voltage signal as a positive input and outputting a fourth voltage signal; a second decoder receiving the fourth voltage signal and outputting the provided fourth voltage signal as a fifth voltage signal to one of the first and second nodes; a third decoder connected to the first and second nodes, receives the fifth voltage signal from one of the first and second nodes, and outputs the fifth voltage signal to a negative input terminal of the amplifier as a sixth voltage signal; and a first resistor connected between the first node and the second node.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: August 31, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: In-Suk Kim, Chan Bong Yu
  • Patent number: 11100826
    Abstract: Provided are an adjusting method of displaying images. The adjusting method use obtaining a coordinate of the defect of the images displayed by the display panel in the vertical lines and a type of the defect in the vertical lines, and adjusting grayscale value of the data signals of the pixels of one row by the timing controller corresponding to the coordinate of the defect of the vertical line in the outputted matrix of the pixels according to the type of the defect in the vertical lines, such that the voltage of the data signals outputted from the source driver to the pixels of the row is changed, and a brightness of the pixels of the row is the same as a brightness of the pixels of two adjacent rows.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: August 24, 2021
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Fengcheng Xu
  • Patent number: 11100828
    Abstract: A measurement system has a photosensitive element, an analog-to-digital converter (ADC), a reference voltage source, and a transmission interface. The photosensitive element senses variations of brightness of a display panel of a liquid crystal display (LCD) to generate a voltage signal. The ADC converts the voltage signal into a digital signal. The reference voltage source provides a reference voltage to the ADC to drive the ADC to dynamically adjust a convertible voltage range of the ADC for any voltage inputted to the ADC according to the reference voltage. The transmission interface transmits the digital signal to a computer to trigger the computer to calculate a response time of the LCD according to the digital signal.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: August 24, 2021
    Assignee: Realtek Semiconductor Corp.
    Inventors: Yung-Chih Chen, Wei-Chih Lin, Jui-Te Wei, Po-An Chen
  • Patent number: 11100876
    Abstract: The present application discloses a thin-film transistor-based latch circuit for latching a data voltage in a pixel circuit. The latch circuit includes an input terminal; a first node; an inverse node; a positive-feedback terminal coupled to the input terminal; a first control sub-circuit coupled respectively to the input terminal, the first node, a first power-supply port configured to be provided with a first voltage, and a second power-supply port configured to be provided with a second voltage; a second control sub-circuit coupled respectively to the input terminal, the first node, the inverse node, the first power-supply port, and the second power-supply port; and a third control sub-circuit coupled respectively to the inverse node, the positive-feedback terminal, the first power-supply port, and the second power-supply port.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: August 24, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., Hefei BOE Optoelectronics Technology Co., Ltd.
    Inventor: Xianjie Shao
  • Patent number: 11087669
    Abstract: A gate drive circuit, a driving method thereof and a display device are disclosed. The gate drive circuit, includes: a plurality of scanning output terminals and a decoder circuit. The decoder circuit includes a plurality of input terminals and a plurality of output terminals; the plurality of output terminals of the decoder circuit are in one-to-one correspondence with the plurality of scanning output terminals; the plurality of input terminals of the decoder circuit are configured to receive a parallel data frame; and the decoder circuit is configured to output a trigger signal for generating a scanning signal at an output terminal, which is corresponding to the parallel data frame, of the decoder circuit when receiving of the parallel data frame outputted by the latch circuit is accomplished, so as to allow a scanning output terminal corresponding to the parallel data frame outputs the scanning signal.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: August 10, 2021
    Assignees: Beijing BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Zhenghua Lu, Zongze He, Shuo Li, Yuxuan Chen, Xiuyun Chen
  • Patent number: 11087665
    Abstract: A display apparatus includes a display panel, a gate driver, a data driver and a driving controller. The display panel including a gate line and a data line displays an image based on input image data. The gate driver outputs a gate signal to the gate line. The data driver outputs a data voltage to the data line. The driving controller includes an area divider dividing the input image data into first and second area data, a first variable frequency driver determining a first driving frequency of the first area data based on a flicker value according to a grayscale value and generating a first data signal of the first driving frequency and a second variable frequency driver determining a second driving frequency of the second area data based on a flicker value according to a grayscale value and generating a second data signal of the second driving frequency.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: August 10, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jinyoung Roh, HongSoo Kim, Sangan Kwon, Sehyuk Park, Hyo Jin Lee
  • Patent number: 11087434
    Abstract: An image processing apparatus and an image processing method are provided. The image processing apparatus includes a first memory, a plurality of image processing circuits, a first image processing circuit and dithering circuit. The first memory is utilized for storing an input frame. The image processing circuits are utilized for sequentially performing respective image processing operations on the input frame to generate a first intermediate frame. The first image processing circuit is utilized for performing a first image processing operation on the first intermediate frame to generate a second intermediate frame and writing the second intermediate frame into the first memory. The dithering circuit is utilized for performing a dithering operation on the second intermediate frame transmitted from the first image processing circuit to generate a first output frame and performing the dithering operation on the second intermediate frame read from the first memory to generate a second output frame.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: August 10, 2021
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Hua-Gang Chang, Chun-Wei Lu, Yu-Hsiung Yin
  • Patent number: 11081032
    Abstract: Aspects of the subject technology relate to control circuitry for displays. A display control circuitry includes a plurality of amplifiers to drive gamma signals for a pixel array having a plurality of pixels of a display and a segmented resistor string coupled to the plurality of amplifiers. The resistor string includes a plurality of resistor segments with a resistor segment being designed with a modified resistance to modify display performance parameters including at least one of a settling time of an associated gamma signal, a power supply rejection ratio (PSRR) of an amplifier of the plurality of amplifiers, or an output voltage offset of an amplifier of the plurality of amplifiers.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: August 3, 2021
    Assignee: Apple Inc.
    Inventors: Fenghua Zheng, Shatam Agarwal
  • Patent number: 11056073
    Abstract: The present application discloses a display device and a reference voltage generation method. The display device includes a display area, a fan-out area, and a reference voltage generation circuit formed in the fan-out area.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: July 6, 2021
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yu-jen Chen
  • Patent number: 11049433
    Abstract: An image display system increases the data volume of a control signal in a frame of analog image so as to process an analog image in real time. A method for increasing the data volume of the control signal, which is used in the image display system, includes increasing the time for transmitting the control signal, changing an encoding method of the control signal to increase a data volume which is transmitted in unit time or outputting an analog image signal and the control signal at the same time. Therefore, the data volume of the control signal in a frame of image can be increased.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: June 29, 2021
    Assignee: AVISONIC TECHNOLOGY CORPORATION
    Inventors: Kuo-Ching Hung, Meng-Chun Lin, Han-Min Cho, Sheng-Fuu Lin