Patents by Inventor Liugang Zhou

Liugang Zhou has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11497096
    Abstract: A source driver includes at least one data input terminal, a plurality of data output terminals, at least two control terminals and a plurality of source driving circuits. Each source driving circuit is connected to a data input terminal of the at least one data input terminal, a data output terminal of the plurality of data output terminals and the at least two control terminals. The source driving circuit is configured such that: the source driving circuit converts a format of a data signal from the data input terminal; and in response to one of different control signals that is received by all the at least two control terminals, the source driving circuit has a corresponding different output impedance, and transmits the converted data signal to the data output terminal.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: November 8, 2022
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Jianwei Sun, Liugang Zhou, Ke Dai, Yizhan Han, Yulong Xiong, Tao Li, Xiaofeng Yin, Maoyang Zhu, Pengjun Fang
  • Publication number: 20220301468
    Abstract: A control method of a display apparatus is provided. The method includes: obtaining to-be-displayed data; starting to generate first image data of a first display panel based on the to-be-displayed data; sending image data to a second processing component based on the to-be-displayed data; and after generating the first image data, delaying sending the first image data to the first display panel based on a first difference between second duration taken by the second processing component to generate second image data and first duration taken by a first processing component to generate the first image data.
    Type: Application
    Filed: January 30, 2022
    Publication date: September 22, 2022
    Inventors: Jun WANG, Liugang ZHOU, Jianwei SUN, Zhengru PAN, Liu HE, Qing LI, Yunyun LIANG, Yu QUAN, Yanting HUANG, Yunlu CHEN
  • Patent number: 11380240
    Abstract: The preset disclosure provides a display control method, a timing controller IC and a display device. The method includes: acquiring a preset grayscale voltage of a target pixel unit and a backlight brightness of a backlight region corresponding to the target pixel unit, in a current output display frame; outputting a first grayscale voltage to the target pixel unit if the backlight brightness of the corresponding backlight region is less than or equal to a first preset brightness value; outputting a second grayscale voltage to the target pixel unit if the backlight brightness of the corresponding backlight region is greater than the first preset brightness value; wherein the second grayscale voltage is greater than the first grayscale voltage, and both the second grayscale voltage and the first grayscale voltage are greater than the preset grayscale voltage.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: July 5, 2022
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhenlin Qu, Liugang Zhou, Ke Dai, Tao Li, Yulong Xiong, Yizhan Han, Jianwei Sun, Liu He, Yunyun Liang, Jun Wang, Qing Li, Xutong Chen, Liwei Zhou, Xiaofeng Yin
  • Patent number: 11348547
    Abstract: The present disclosure provides a method and an apparatus for compensating the display voltage, a display apparatus and a display device, the method comprises acquiring, when performing an inversion operation with a polarity inversion signal for an arbitrary pixel, a preceding grayscale value and a subsequent grayscale value of the pixel, wherein the polarity inversion signal is configured to control the polarity of the pixel voltage of the pixel, the preceding grayscale value is a grayscale value of the pixel in a preceding frame before the inversion operation, and the subsequent grayscale value is the grayscale value of the pixel in a subsequent frame after the inversion operation.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: May 31, 2022
    Assignees: Hefei BOE Display Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yulong Xiong, Liugang Zhou, Tao Li, Yizhan Han, Jianwei Sun, Liu He, Yunyun Liang
  • Publication number: 20220076645
    Abstract: A pixel driving circuit, a pixel driving method, an array substrate and a display device are provided. The pixel driving circuit includes a plurality of pixel regions; a pixel electrode array; and a thin film transistor switch, where at least one thin film transistor switch is arranged in each pixel region; the polarities of input voltage signals to two adjacent pixel electrodes are opposite in a same row of pixel electrodes; M rows of pixel electrodes are divided into Q pixel groups, including a first pixel group, a second pixel group and (Q?2) third pixel groups located between the first pixel group and the second pixel group, and each third pixel group includes at least q rows of pixel electrodes; and in the same column of pixel electrodes, the polarities of input voltage signals to the pixel electrodes in the same pixel group are the same, and the polarities of input voltage signals to the pixel electrodes of two adjacent pixel groups are opposite.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 10, 2022
    Inventors: Bingbing YAN, Ke DAI, Liugang ZHOU, Chunyang NIE
  • Patent number: 11250764
    Abstract: The present disclosure provides a mura compensation device, display panel, display device, and mura compensation method, which belongs to the field of panel technology. The mura compensation device includes a first flexible circuit board and a de-mura circuit, including a storage unit for storing mura compensation data, wherein the de-mura circuit is provided in the first flexible circuit board.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: February 15, 2022
    Assignees: Hefei BOE Display Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jianwei Sun, Liugang Zhou, Yizhan Han, Tao Li, Yulong Xiong
  • Patent number: 11250751
    Abstract: Some embodiments of the present disclosure provide a shift register unit, a gate driver, a driving method thereof and a display device. The shift register unit includes: an output circuit, configured to receive a clock signal and output the clock signal to an output signal terminal under control of a voltage of a pull-up control node; a pull-down control circuit, configured to receive a control voltage signal and control the voltage of the pull-up control node and a voltage of the output signal terminal according to the control voltage signal; and an output control circuit, configured to receive a first voltage signal and the control voltage signal, and control the voltage of the output signal terminal in response to the first voltage signal and the control voltage signal.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: February 15, 2022
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Tao Li, Liugang Zhou, Ke Dai, Yizhan Han, Jianwei Sun, Yulong Xiong
  • Patent number: 11250802
    Abstract: The disclosure discloses a method and apparatus for driving a display panel, and a display device. A method for driving a display panel according to an embodiment of this disclosure includes: determining a charging length of time of the current row of pixels; determining a common voltage value corresponding to the charging length of time; and driving the current row of pixels using the common voltage value.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: February 15, 2022
    Assignees: Hefei Boe Display Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Liugang Zhou, Yifang Chu, Shou Li
  • Patent number: 11250806
    Abstract: The present disclosure provides a common voltage regulating circuit and a common voltage regulating method, a display driving circuit and a display device, the common voltage regulating circuit is applied to a display panel, and the display panel includes a pixel electrode and a common electrode, the common voltage regulating circuit includes: a first regulating sub-circuit configured to provide a signal from a second signal input terminal to a first signal output terminal under the control of an enabling signal terminal in a power-on stage of the display panel; the first signal input terminal is configured to input a signal to be provided to the common electrode in a display stage of the display panel, the second signal input terminal is configured to input a signal to be provided to the pixel electrode in the power-on stage, the first signal output terminal is coupled with the common electrode.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: February 15, 2022
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yizhan Han, Jianwei Sun, Liugang Zhou, Xiaolong Suo
  • Patent number: 11250798
    Abstract: A display driving method includes: determining, by a timing controller, an actual grayscale value of a sub-pixel image in an X-th row and a Y-th column according to a preset grayscale value of a sub-pixel image in an (X?1)-th row and the Y-th column and a preset grayscale value of the sub-pixel image in the X-th row and the Y-th column of an image frame to be displayed. The image frame to be displayed includes J rows and Q columns of sub-pixel images. X is greater than or equal to 2, and is less than or equal to J. Y is greater than or equal to 1, and is less than or equal to Q, and X, Y, J, and Q are all integers.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: February 15, 2022
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jun Wang, Liugang Zhou, Jingang Liu, Ke Dai, Xiaofeng Yin, Jianwei Sun, Liu He, Zhenlin Qu, Qing Li, Yunyun Liang, Yulong Xiong, Yu Quan
  • Patent number: 11211027
    Abstract: The present disclosure is related to a driving circuit of a display panel. The driving circuit may include a turn-on voltage adjusting circuit. The turn-on voltage adjusting circuit may include a control subcircuit and a switching and voltage division subcircuit. The switching and voltage division subcircuit may include a switching subcircuit and a basic voltage division subcircuit. The switching subcircuit may be configured to perform voltage division of a signal outputted by the output terminal of the control subcircuit to form a voltage division feedback signal of the corresponding resolution under control of the control signal and output the voltage division feedback signal to the voltage division feedback node.
    Type: Grant
    Filed: April 8, 2018
    Date of Patent: December 28, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guangliang Shang, Liugang Zhou, Haoliang Zheng, Yaoqiu Jing, Mingfu Han, Seungwoo Han
  • Patent number: 11195451
    Abstract: The present disclosure provides a voltage compensation circuit and a voltage compensation method, a display driving circuit and a display device. The voltage compensation circuit includes: a voltage analyzing sub-circuit and a gamma voltage generating sub-circuit. The voltage analyzing sub-circuit is coupled to the display panel and configured to obtain pixel voltages of target pixels in the image to be detected; judge whether the display panel is abnormal according to the pixel voltages; generate a compensation control signal in response to that the display panel is abnormal. The gamma voltage generating sub-circuit is coupled to the voltage analyzing sub-circuit and is configured to compensate a gamma voltage corresponding to the image to be detected according to the compensation control signal so as to enable the pixel voltages of the target pixels to be consistent.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: December 7, 2021
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yizhan Han, Liugang Zhou, Jianwei Sun, Tao Li, Yulong Xiong, Chunheng Zhang, Qing Li
  • Patent number: 11183131
    Abstract: A gray-scale drive table generating device is described that includes a sampling circuit configured to collect a first voltage between a drive electrode of a sub-pixel of a positive-frame and a common electrode and a second voltage between a drive electrode of a sub-pixel of a negative-frame and the common electrode in a display panel in each gray-scale; a processing circuit configured to generate a trigger signal when a voltage difference between the first voltage and the second voltage is greater than a voltage threshold; an adjustment circuit configured to adjust drive gray-scales of the sub-pixel of the positive-frame and/or the sub-pixel of the negative-frame in response to the trigger signal to make the voltage difference less than the voltage threshold; and a recording circuit configured to generate an adjusted gray-scale drive table according to the drive gray-scales of the sub-pixel of the positive-frame and the sub-pixel of the negative-frame in each gray-scale.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: November 23, 2021
    Assignees: Hefei BOE Display Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Tao Li, Liugang Zhou, Ke Dai, Yizhan Han, Jianwei Sun, Yulong Xiong, Zhenlin Qu
  • Patent number: 11114013
    Abstract: A display driving device, a display driving method, a display module and a display device are provided. The display driving device includes: a PWM signal generating circuit configured to generate a PWM signal; a PWM signal acquisition circuit, configured to identify whether the PWM signal output by the PWM signal generating circuit is at a high level or a low level; a gamma voltage debugging circuit, configured to debug a gamma voltage to obtain a first group of gamma voltage reference data corresponding to the PWM signal at the high level and a second group of gamma voltage reference data corresponding to the PWM signal at the low level in each gray-scale image; and a gamma voltage switching circuit.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: September 7, 2021
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Qing Li, Liugang Zhou, Ke Dai, Yizhan Han, Liu He, Yunyun Liang, Jun Wang, Zhenlin Qu, Jianwei Sun, Yulong Xiong, Tao Li, Yu Quan, Xiaofeng Yin, Qian Zhou, Pengjun Fang
  • Patent number: 11087705
    Abstract: A driving method of a display panel, a driving circuitry of a display panel and a display device are provided. The display panel includes Y gate lines, the Y gate lines are divided into a plurality of gate line groups based on a scanning sequence of the Y gate lines, and each gate line group includes at least one gate line; the driving method includes: determining an ith gate line to be scanned; adjusting an original charging duration of a scanning signal corresponding to the ith gate line to an adjustment charging duration, where the adjustment charging duration of every gate line in each gate line group are identical, and the adjustment charging durations of respective gate line groups gradually increase in a direction away from a source driver; and outputting the scanning signal corresponding to the ith gate line to the ith gate line, based on the adjustment charging duration of the ith gate line.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: August 10, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Liugang Zhou, Jianming Wang, Shou Li, Tao Li, Yuan Shi
  • Publication number: 20210225319
    Abstract: The present disclosure provides a common voltage regulating circuit and a common voltage regulating method, a display driving circuit and a display device, the common voltage regulating circuit is applied to a display panel, and the display panel includes a pixel electrode and a common electrode, the common voltage regulating circuit includes: a first regulating sub-circuit configured to provide a signal from a second signal input terminal to a first signal output terminal under the control of an enabling signal terminal in a power-on stage of the display panel; the first signal input terminal is configured to input a signal to be provided to the common electrode in a display stage of the display panel, the second signal input terminal is configured to input a signal to be provided to the pixel electrode in the power-on stage, the first signal output terminal is coupled with the common electrode.
    Type: Application
    Filed: December 18, 2019
    Publication date: July 22, 2021
    Inventors: Yizhan HAN, Jianwei SUN, Liugang ZHOU, Xiaolong SUO
  • Publication number: 20210225239
    Abstract: The present disclosure provides a mura compensation device, display panel, display device, and mura compensation method, which belongs to the field of panel technology. The mura compensation device includes a first flexible circuit board and a de-mura circuit, including a storage unit for storing mura compensation data, wherein the de-mura circuit is provided in the first flexible circuit board.
    Type: Application
    Filed: December 11, 2019
    Publication date: July 22, 2021
    Inventors: Jianwei SUN, Liugang ZHOU, Yizhan HAN, Tao LI, Yulong XIONG
  • Publication number: 20210225308
    Abstract: The present disclosure provides a method and an apparatus for compensating the display voltage, a display apparatus and a display device, the method comprises acquiring, when performing an inversion operation with a polarity inversion signal for an arbitrary pixel, a preceding grayscale value and a subsequent grayscale value of the pixel, wherein the polarity inversion signal is configured to control the polarity of the pixel voltage of the pixel, the preceding grayscale value is a grayscale value of the pixel in a preceding frame before the inversion operation, and the subsequent grayscale value is the grayscale value of the pixel in a subsequent frame after the inversion operation.
    Type: Application
    Filed: December 3, 2019
    Publication date: July 22, 2021
    Applicants: Hefei BOE Display Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yulong Xiong, Liugang Zhou, Tao Li, Yizhan Han, Jianwei Sun, Liu He, Yunyun Liang
  • Patent number: 11069320
    Abstract: A chip-on-film and a display device. The chip-on-film includes a substrate, at least one chip on the substrate, input terminals on the substrate, and output terminals on the substrate. The input terminals are configured to receive printed-circuit-board signals. The output terminals include data signal output sub-terminals configured to output display panel data signals. The output terminals lack an output sub-terminal configured to output a display panel scanning signal.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: July 20, 2021
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yizhan Han, Ke Dai, Liugang Zhou
  • Patent number: 11062669
    Abstract: The present disclosure provides a driving circuit and driving method for a liquid crystal display panel, and a display device. The driving circuit includes: a signal collector, configured to collect a backlight control signal; and a timing control chip, configured to determine whether a BLU is in the bright state time period or in the dark state time period, and retrieve a first gate control signal from a memory chip and output the first gate control signal to a gate driving circuit, when determining that the BLU is in the bright state time period, or retrieve a second gate control signal from the memory chip and output the second gate control signal to the gate driving circuit, when determining that the BLU is in the dark state time period.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: July 13, 2021
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE Technology Group Co., Ltd.
    Inventors: Ke Dai, Yunyun Liang, Liugang Zhou, Zhenlin Qu, Liu He, Qing Li, Jun Wang, Yu Quan, Xiaofeng Yin, Liwei Zhou, Lin Zhang, Tao Li, Yulong Xiong