Patents by Inventor Ke Dai

Ke Dai 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: 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
  • Publication number: 20210358383
    Abstract: A display device, a gate drive circuit, a shift register and a control method are disclosed. A first shift register unit of the shift register is configured to write a first control signal to a first node under control of a first input signal, write a first clock signal to a first signal output terminal; a second shift register unit of the shift register is configured to write a second control signal to the first node under control of a second input signal, write a second clock signal to a second signal output terminal; during the first frame, the first clock signal and the first input signal are pulse signals, the second clock signal and the second input signal are DC signals; during the second frame, the first clock signal and the first input signal are DC signals, the second clock signal and the second input signal are pulse signals.
    Type: Application
    Filed: January 9, 2019
    Publication date: November 18, 2021
    Inventors: Zuquan HU, Zhenyu ZHANG, Haipeng YANG, Ke DAI
  • Publication number: 20210356792
    Abstract: The present disclosure relates to a display panel. The display panel may include a first substrate, a second substrate opposite the first substrate, and a frame supporting structure between the first substrate and the second substrate in a frame area of the display panel. The frame area of the display panel may surround a display area of the display panel. The frame supporting structure may include a first frame supporting portion on at least one part of a circumference of the display area, the first frame supporting portion comprises an elastic material, and an elastic recovery rate of the elastic material is above about 80%.
    Type: Application
    Filed: April 3, 2019
    Publication date: November 18, 2021
    Applicants: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lin Zhang, Hongliang Wang, Ke Dai
  • Patent number: 11171160
    Abstract: An array substrate, a method of manufacturing the same, and a display panel are provided. The method includes: providing a base substrate including a display area and a wiring area at a periphery of the display area; in the process of forming a connection electrode in the wiring area, remaining a first photoresist layer for performing the patterning process and covering the connection electrode; depositing a film of reflective pixel electrode layer on the base substrate and performing a patterning process on the film of reflective pixel electrode layer to form a reflective pixel electrode layer in the display area and to remove the film of reflective pixel electrode layer in the wiring area to expose the first photoresist layer; removing a second photoresist layer for patterning the thin film of reflective pixel electrode layer on the reflective pixel electrode layer with the first photoresist layer in the wiring area.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: November 9, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Lei Su, Zhengdong Zhang, Gang Zhou, Xiaofei Yang, Ke Dai
  • Patent number: 11169413
    Abstract: A display apparatus includes a first polarizer, a first liquid crystal panel, a second polarizer, a second liquid crystal panel and a third polarizer which are sequentially stacked, wherein the second polarizer includes two protective layers, and a polarizing layer positioned between the two protective layers.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: November 9, 2021
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Jiaqing Liu, Yanping Liao, Ke Dai, Lei Guo
  • Publication number: 20210335316
    Abstract: A common voltage calibration circuit and a driving method thereof, a circuit board and a display device are provided. The common voltage calibration circuit includes a difference circuit, a compensation circuit and a summing circuit; the difference circuit is configured to perform a difference processing on a common voltage provided by the common voltage input terminal and a feedback common voltage provided by the common voltage feedback terminal to output a difference value signal; the compensation circuit is configured to receive the difference value signal and compensate the common voltage based on the difference value signal; and the summing circuit is configured to superimpose at least two compensation signals output by the compensation circuit and output through the common voltage output terminal.
    Type: Application
    Filed: July 17, 2018
    Publication date: October 28, 2021
    Applicants: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Kun Yang, Wenwu Lu, Chunyang Nie, Ke Dai
  • Publication number: 20210333576
    Abstract: The present application provides an apparatus for a photo-alignment process. The apparatus for a photo-alignment process includes a reflector, an up-conversion layer, and a polarizer optically coupled together. The reflector is configured to reflect an infrared light and provide a reflected infrared light to the up-conversion layer. The up-conversion layer is configured to convert the reflected infrared light to an ultraviolet light, and provide the ultraviolet light to the polarizer. The polarizer is configured to convert the ultraviolet light to a polarized ultraviolet light for the photo-alignment process.
    Type: Application
    Filed: April 24, 2018
    Publication date: October 28, 2021
    Applicants: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Chengpeng Yao, Lei Guo, Ke Dai
  • Publication number: 20210333599
    Abstract: A display panel having a display area and a peripheral area is provided. The display panel includes a first display substrate; a second display substrate facing the first display substrate; a sealant layer in the peripheral area and between the first display substrate and the second display substrate, configured to seal the first display substrate and the second display substrate together to form a cell; and an elastic support layer in the peripheral area and between the first display substrate and the second display substrate. The elastic support layer encircled by the sealant layer and spaced apart from the sealant layer. The elastic support layer substantially surrounds the display area. The elastic support layer is configured to be in direct contact with the first display substrate and in direct contact with the second display substrate.
    Type: Application
    Filed: May 14, 2019
    Publication date: October 28, 2021
    Applicants: Hefei BOE Display Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Lin Zhang, Ke Dai, Hongliang Wang
  • 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
  • Publication number: 20210271141
    Abstract: The present disclosure relates to a display panel and a display device. The display panel comprises: a display liquid crystal panel comprising a plurality of sub-pixels defined by a first grid structure and arranged in an array; a dimming liquid crystal panel located on a light incident side of the display liquid crystal panel and stacked with the display liquid crystal panel, the dimming liquid crystal panel comprising a plurality of dimming pixels defined by a second grid structure and arranged in an array; wherein the second grid structure comprises a plurality of shading lines which extend in a waveform along a row direction and have the same period, and a waveform phase difference ?? of any two adjacent shading lines meets: 0<|??|<?.
    Type: Application
    Filed: June 30, 2020
    Publication date: September 2, 2021
    Inventors: Yue Du, Yuanhui Guo, Lei Guo, Ke Dai
  • Publication number: 20210232248
    Abstract: The present disclosure provides a circuit control method and a control device, a display module and a display device. The circuit control device is used for acquiring an indication signal for indicating whether a user performs touch operation on the touch panel or not; the current is provided for the driving circuit according to the indication signal, a first current is provided for the driving circuit under the condition that a user does not carry out touch operation on the touch panel, a second current is provided for the driving circuit under the condition that the user carries out touch operation on the touch panel, and the second current is larger than the first current.
    Type: Application
    Filed: February 6, 2020
    Publication date: July 29, 2021
    Applicants: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Bingbing YAN, Chunyang NIE, Ke DAI, Lixin ZHU
  • Publication number: 20210223639
    Abstract: An array substrate is disclosed, the array sul cluding: a pixel display transistor having a first source, a first drain, and a first channel region, the first channel region having a first channel length extending between the first source and the first drain; an antistatic transistor having a second source, a second drain, and a second channel region; and a conductive block in the second channel region between the second source and the second drain; wherein the first channel region and second channel region are patterned regions of a same semiconductor material layer; and the conductive block divides the second channel region into a first sub-channel and a second sub-channel.
    Type: Application
    Filed: May 29, 2019
    Publication date: July 22, 2021
    Applicants: Hefei BOE Display Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chunxu ZHANG, Yuntian ZHANG, Zhonghou WU, Peng JIANG, Yafei DENG, Ke DAI
  • Publication number: 20210225221
    Abstract: The present disclosure generally relates to display technologies. An array substrate includes a plurality of repeating units arranged in a first direction, each repeating unit including a plurality of connection areas and a plurality of shared testing areas arranged in an alternating manner in a row along the first direction. Each of the plurality of shared testing areas is between two adjacent connection areas and coupled to each of the two adjacent connection areas, and each of the plurality of shared testing areas includes a plurality of testing pads, a first portion of the plurality of testing pads being coupled to one of the two adjacent connection areas, a second portion of the plurality of testing pads being coupled to the other one of the two adjacent connection areas.
    Type: Application
    Filed: November 12, 2019
    Publication date: July 22, 2021
    Applicants: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chunxu Zhang, Ke Dai, Zhonghou Wu, Peng Jiang, Yuntian Zhang, Yafei Deng
  • Patent number: 11069287
    Abstract: A driver control circuit and a display device are disclosed, where the driver control circuit includes: a first transistor with a first terminal connected with a supply voltage of a main loop, and a second terminal connected with a first ground terminal; and a first control component connected with a control terminal of the first transistor, and configured to control the first transistor to be in a state of incomplete conduction in amplification region, when the supply voltage of the main loop is powered on.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: July 20, 2021
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Lixin Zhu, Ruilian Li, Lei Shi, Xueqin Wei, Bingbing Yan, Chunyang Nie, Ke Dai
  • 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
  • Publication number: 20210217342
    Abstract: Provided are a shift register and a driving method thereof, a gate driving circuit, and a display apparatus. The shift register is disposed on a display panel. An operating process of the display panel includes a start-up phase and a display phase. The shift register includes a shift register unit, a start-up discharge circuit, a first control end, a second control end, a signal output end and a first power supply end; the shift register unit is configured to output a gate driving signal to the signal output end in the display phase; the start-up discharge circuit is configured to provide a signal of the first power supply end to the signal output end under control of the first control end and the second control end in the start-up phase.
    Type: Application
    Filed: January 13, 2020
    Publication date: July 15, 2021
    Inventors: Shenghua HU, Chunyang NIE, Xueqin WEI, Ke DAI
  • Publication number: 20210215971
    Abstract: A polarizer includes a first protection layer, a polarizing layer and a second protection layer that are sequentially stacked; and at least one diffusion layer. One diffusion layer is disposed on a side of at least one of the first protection layer and the second protection layer facing away from the polarizing layer, and the diffusion layer is configured to diffuse at least a part of light passing through the diffusion layer.
    Type: Application
    Filed: August 29, 2019
    Publication date: July 15, 2021
    Inventors: Yanping LIAO, Jiaqing LIU, Lihui HAN, Jingang LIU, Ke DAI, Lei GUO
  • 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
  • Publication number: 20210202529
    Abstract: A manufacturing method for an array substrate includes: providing a base substrate which includes a display area and a wiring area located at a periphery of the display area; in the process of forming a connection electrode in the wiring area, remaining a first photoresist layer for performing the patterning process and covering the connection electrode; and then depositing a film of reflective pixel electrode layer on the base substrate and performing a patterning process on the film of reflective pixel electrode layer to form a reflective pixel electrode layer in the display area and to remove the film of reflective pixel electrode layer in the wiring area to expose the first photoresist layer; then removing a second photoresist layer for patterning the thin film of reflective pixel electrode layer on the reflective pixel electrode layer along with the first photoresist layer in the wiring area.
    Type: Application
    Filed: December 18, 2017
    Publication date: July 1, 2021
    Inventors: Lei SU, Zhengdong ZHANG, Gang ZHOU, Xiaofei YANG, Ke DAI
  • Publication number: 20210201838
    Abstract: The present disclosure provides a driving method of a display device and a display device. The driving method of the display device includes: inputting a gate signal with a length of a first duration to each of gate lines; and inputting a data signal to each of data lines to drive the display device for displaying. Among M data lines crossing the gate line in a direction of the gate line from a signal input terminal to an terminal away from the signal input terminal, a start time at which an mth data line input with the data signal is delayed by a second duration, relative to the start time at which a first data line closest to the signal input terminal of the gate line is input with the data signal, and the second duration is less than the first duration.
    Type: Application
    Filed: December 4, 2019
    Publication date: July 1, 2021
    Inventors: Xueqin WEI, Chunyang NIE, Ke DAI, Ruilian LI, Lixin ZHU, Bingbing YAN, Yan YANG, Wen Chieh HUANG, Ching Hua HUNG, Wei SUN, Rui LIU, Ming CHEN