Patents by Inventor Yudong LIU

Yudong LIU 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: 10403218
    Abstract: A Mura compensation circuit and method, a driving circuit and a display device are provided. The Mura compensation circuit comprises: a vertical Mura compensation unit, for providing a corresponding gamma voltage to a vertical block Mura region and a vertical non-Mura region of a display panel respectively, to compensate for a vertical Mura phenomenon; and/or a horizontal Mura compensation unit, for providing a corresponding gate drive signal and/or a corresponding charging/discharging control signal to a horizontal block Mura region and a horizontal non-Mura region of a display panel respectively, to compensate for a horizontal Mura phenomenon. The Mura compensation circuit can make the different regions of the display panel have the same display effect, and improve reduction of display quality caused by impedance difference at different positions of the display panel, thereby raising the quality of a picture, and can be promoted and applied widely.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: September 3, 2019
    Assignees: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Jian Zhao, Mo Chen, Yudong Liu, Xiong Xiong
  • Patent number: 10332807
    Abstract: An array substrate and a manufacturing method thereof are provided. The method for manufacturing the array substrate includes: forming a passivation layer on a base substrate; forming photoresist on the passivation layer, and forming a first photoresist pattern including a photoresist-completely-retained region, a photoresist-partially-retained region and a photoresist-completely-removed region, by exposure and development processes; forming a first through hole in the passivation layer by etching the passivation layer with the first photoresist pattern as a mask; forming a second photoresist pattern by performing ashing on the first photoresist pattern to remove the photoresist in the photoresist-partially-retained region and reduce a thickness of the photoresist in the photoresist-completely-retained region; and etching the passivation layer with the second photoresist pattern as a mask, so as to reduce a thickness of the passivation layer in the photoresist-partially-retained region.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: June 25, 2019
    Assignees: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Yudong Liu, Rongcheng Liu, Yunhai Wan
  • Patent number: 10293385
    Abstract: A foreign substance collection structure, a display device and an operation method thereof are provided. The foreign substance collection structure includes a frame and a first baffle plate. The frame includes a first inside wall, the first baffle plate is configured to move toward the first inside wall. The first baffle plate includes a first surface and is capable of being moved from a position away from the first inside wall to a position where the first surface of the first baffle plate faces the first inside wall; an adhesive layer is disposed on at least one of the first inside wall and the first surface, and the adhesive layer is configured to bond foreign substances appearing on the first inside wall and/or the first surface.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: May 21, 2019
    Assignees: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Hailong Li, Yudong Liu, Xiong Xiong, Xiaozhe Zhang, Ning Wang
  • Patent number: 10268085
    Abstract: A liquid crystal coating apparatus and a liquid crystal coating method are provided. The liquid crystal coating apparatus comprises a liquid crystal nozzle and a cooling device, the cooling device is located behind the nozzle along a movement trace of the nozzle, and the cooling device moves along the movement trace of the nozzle.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: April 23, 2019
    Assignees: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Jian Ma, Wenming Ren, Yudong Liu
  • Publication number: 20180373070
    Abstract: A display substrate and a display device are disclosed. The display substrate includes an active area and a non-active area, and an afterimage removing device for adsorbing charged ions by forming a potential difference is provided in the non-active area.
    Type: Application
    Filed: July 28, 2017
    Publication date: December 27, 2018
    Inventors: Jian ZHAO, Yudong LIU, Huanyu LI, Mo CHEN, Yang ZHANG, Jilei GAO
  • Publication number: 20180356925
    Abstract: A touch substrate is disclosed, which comprises a substrate, an insulating layer, a first touch electrode, and a second touch electrode. The insulating layer is arranged on the substrate. The first and second touch electrodes are arranged on the substrate, have an overlapping region, and are insulated from each other in the overlapping region through the insulating layer. The substrate is provided with a first trench, in which the first touch electrode is at least partially arranged. By arranging the first touch electrode at least partially in the first trench, the difference in height due to the first touch electrode is reduced or eliminated, and adverse effects on films over the first touch electrode due to the difference in height are reduced or eliminated. A method for fabricating the touch substrate and a touch panel are also disclosed.
    Type: Application
    Filed: March 2, 2017
    Publication date: December 13, 2018
    Inventors: Yudong LIU, Rongcheng LIU, Hui WANG, Ning WANG, Jian MA, Hailong LI
  • Publication number: 20180264527
    Abstract: A foreign substance collection structure, a display device and an operation method thereof are provided. The foreign substance collection structure includes a frame and a first baffle plate. The frame includes a first inside wall, the first baffle plate is configured to move toward the first inside wall. The first baffle plate includes a first surface and is capable of being moved from a position away from the first inside wall to a position where the first surface of the first baffle plate faces the first inside wall; an adhesive layer is disposed on at least one of the first inside wall and the first surface, and the adhesive layer is configured to bond foreign substances appearing on the first inside wall and/or the first surface.
    Type: Application
    Filed: November 17, 2017
    Publication date: September 20, 2018
    Inventors: Hailong Li, Yudong Liu, Xiong Xiong, Xiaozhe Zhang, Ning Wang
  • Publication number: 20180233096
    Abstract: A Mura compensation circuit and method, a driving circuit and a display device are provided. The Mura compensation circuit comprises: a vertical Mura compensation unit, for providing a corresponding gamma voltage to a vertical block Mura region and a vertical non-Mura region of a display panel respectively, to compensate for a vertical Mura phenomenon; and/or a horizontal Mura compensation unit, for providing a corresponding gate drive signal and/or a corresponding charging/discharging control signal to a horizontal block Mura region and a horizontal non-Mura region of a display panel respectively, to compensate for a horizontal Mura phenomenon. The Mura compensation circuit can make the different regions of the display panel have the same display effect, and improve reduction of display quality caused by impedance difference at different positions of the display panel, thereby raising the quality of a picture, and can be promoted and applied widely.
    Type: Application
    Filed: May 12, 2016
    Publication date: August 16, 2018
    Applicants: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd .
    Inventors: Jian Zhao, Mo Chen, Yudong Liu, Xiong Xiong
  • Publication number: 20180211888
    Abstract: An array substrate and a manufacturing method thereof are provided. The method for manufacturing the array substrate includes: forming a passivation layer on a base substrate; forming photoresist on the passivation layer, and forming a first photoresist pattern including a photoresist-completely-retained region, a photoresist-partially-retained region and a photoresist-completely-removed region, by exposure and development processes; forming a first through hole in the passivation layer by etching the passivation layer with the first photoresist pattern as a mask; forming a second photoresist pattern by performing ashing on the first photoresist pattern to remove the photoresist in the photoresist-partially-retained region and reduce a thickness of the photoresist in the photoresist-completely-retained region; and etching the passivation layer with the second photoresist pattern as a mask, so as to reduce a thickness of the passivation layer in the photoresist-partially-retained region.
    Type: Application
    Filed: March 3, 2017
    Publication date: July 26, 2018
    Applicants: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd .
    Inventors: Yudong Liu, Rongcheng Liu, Yunhai Wan
  • Publication number: 20180039112
    Abstract: A liquid crystal coating apparatus and a liquid crystal coating method are provided. The liquid crystal coating apparatus comprises a liquid crystal nozzle and a cooling device, the cooling device is located behind the nozzle along a movement trace of the nozzle, and the cooling device moves along the movement trace of the nozzle.
    Type: Application
    Filed: July 15, 2016
    Publication date: February 8, 2018
    Applicants: BOE Technology Group Co., Ltd., Hefei Xinsheng Optoelectronics Technology Co., Ltd
    Inventors: Jian Ma, Wenming Ren, Yudong Liu
  • Publication number: 20170219875
    Abstract: Embodiments of the present application provide a color filter substrate, a method for manufacturing the color filter substrate, a display panel and a display device. The color filter substrate includes: a substrate; a color filter layer disposed on the substrate, the color filter layer including a plurality of sub color filter layers spaced apart from each other; a process electrode layer disposed on the substrate and within a gap between any two adjacent sub color filter layers; and a black matrix disposed within the gap between the any two adjacent sub color filter layers and on the corresponding process electrode layer, and connected with the adjacent sub color filter layer without any overlap therebetween.
    Type: Application
    Filed: August 11, 2016
    Publication date: August 3, 2017
    Inventors: Xiong Xiong, Rongcheng Liu, Yudong Liu, Jian Zhao
  • Publication number: 20170200831
    Abstract: The present disclosure provides a thin-film transistor. The thin-film transistor includes a substrate including at least one trench; at least one electrode in each of the at least one trench, the at least one electrode being one or more of a gate electrode, a source electrode, and a drain electrode; and an active layer over the at least one electrode.
    Type: Application
    Filed: May 20, 2016
    Publication date: July 13, 2017
    Inventors: Yudong LIU, Xiong XIONG, Chengying CAO, Hui WANG, Lin LIN, Fangfang WU