Patents by Inventor Yankai GAO

Yankai GAO 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: 10580360
    Abstract: A pixel circuit and a driving method thereof, and a display device. The pixel circuit includes a driving circuit, a light emitting circuit, a fusing circuit and a fusing control circuit. The driving circuit is configured to convert a voltage signal input from a first voltage terminal into a driving current signal, and to output the driving current signal to the fusing circuit; the fusing circuit is configured to disconnect the light emitting circuit from the driving circuit; the fusing control circuit is configured to control the driving current signal to flow to the ground terminal under control of a signal input from the control line, to disconnect the light emitting circuit from the driving circuit; and the light emitting circuit is configured to emit light under control of the second voltage terminal in a case that the light emitting circuit is not disconnected from the driving circuit.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: March 3, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jie Fu, Xiaochuan Chen, Shengji Yang, Lei Wang, Yankai Gao, Dongni Liu, Han Yue, Li Xiao, Pengcheng Lu, Mingfu Han
  • Publication number: 20200043396
    Abstract: The disclosure relates to a method and apparatus for converting a grayscale, and a display device, where color coordinates of respective pixel elements are determined according to grayscales corresponding to red sub-pixels, green sub-pixels, and blue sub-pixels in the respective pixel elements in image data of a frame to be displayed, and then the distances between the color coordinates of the respective pixel elements, and color coordinates of a preset white pixel on the panel, in a CIE chroma graph are determined; and the maximum grayscales of white sub-pixels in the respective pixel elements are further determined according to the respective determined distances and a preset segmentation function.
    Type: Application
    Filed: April 29, 2019
    Publication date: February 6, 2020
    Inventors: Bin DAI, Yanhui XI, Xiaomang ZHANG, Yan SUN, Yue LI, Yuxin BI, Yankai GAO
  • Publication number: 20200013322
    Abstract: A method for filling holes in a naked-eye 3D multi-viewpoint image is provided, comprising: sequentially performing a step of mapping, determining and marking row by row, comprising mapping two first pixels adjacent to each other in a row direction among a plurality of first pixels in a reference camera image to two second pixels in a virtual camera image, determining whether there is a hole between the two second pixels, and if so, marking the hole; and sequentially performing a step of scanning, assessing and filling row by row, comprising scanning two second pixels adjacent to each other in a row direction, assessing whether there is a marked hole between the two adjacent second pixels, and filling the marked hole according to at least one non-zero second pixel which is adjacent to the marked hole.
    Type: Application
    Filed: June 12, 2019
    Publication date: January 9, 2020
    Inventors: Bin DAI, Xiaomang ZHANG, Yanhui XI, Yan SUN, Yankai GAO, Yuxin BI, Lingyun SHI
  • Patent number: 10299346
    Abstract: A system for monitoring a back light module is provided. The system includes an obtaining unit configured to obtain an intensity of output light from the back light module, a detection unit configured to detect whether the intensity of the output light from the back light module is greater than a preset value, and a control unit configured to control the back light module to reduce the intensity of the output light in response to detecting that the intensity of the output light is greater than the preset value, such that the reduced intensity of the output light is equal to or greater than the preset value.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: May 21, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yankai Gao, Chul Gyu Jung, Cheng-Te Lai, Chengqi Zhou
  • Patent number: 10269319
    Abstract: A display device and a driving method thereof are provided. The driving method includes supplying a first voltage Vp1 to a sub-pixel of the display device through data lines in a first stage of a control period for displaying an image. A time for displaying the image includes a plurality of control periods, and the control period includes the first stage and at least a second stage following the first stage. The driving method also includes supplying a second voltage Vp2 to the sub-pixel through the data lines in the second stage. A gate scanning frequency of the first stage is F1 and a gate scanning frequency of the second stage is F2. When the first stage ends, the sub-pixel has a pixel voltage Vp3, F1<F2, and |Vp1|?|Vp2|>|Vp3|.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: April 23, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yoonsung Um, Zheng Fang, Chengte Lai, Yunsik Im, Yankai Gao
  • Publication number: 20190080650
    Abstract: A pixel circuit and a driving method, a display device. The pixel circuit includes: a main driving circuit, configured to, under control of a scanning signal line and a data signal line, output a main driving current signal to a fusing circuit; the fusing circuit configured to enable a light emitting circuit and the main driving circuit to be disconnected from each other; a fusing control circuit configured to, under control of a signal input terminal, enable the light emitting circuit and the main driving circuit to be disconnected from each other; a standby driving circuit configured to output a standby driving current signal to a switching circuit; the switching circuit configured to, under control of an input signal of a control line, connect the standby driving circuit to the light emitting circuit; and the light emitting circuit configured to emit light by using the standby driving current signal.
    Type: Application
    Filed: September 22, 2017
    Publication date: March 14, 2019
    Inventors: Jie FU, Xiaochuan CHEN, Shengji YANG, Dongni LIU, Lei WANG, Pengcheng LU, Li XIAO, Han YUE, Yankai GAO, Mingfu HAN
  • Publication number: 20190012965
    Abstract: A pixel circuit and a driving method thereof, and a display device. The pixel circuit includes a driving circuit, a light emitting circuit, a fusing circuit and a fusing control circuit. The driving circuit is configured to convert a voltage signal input from a first voltage terminal into a driving current signal, and to output the driving current signal to the fusing circuit; the fusing circuit is configured to disconnect the light emitting circuit from the driving circuit; the fusing control circuit is configured to control the driving current signal to flow to the ground terminal under control of a signal input from the control line, to disconnect the light emitting circuit from the driving circuit; and the light emitting circuit is configured to emit light under control of the second voltage terminal in a case that the light emitting circuit is not disconnected from the driving circuit.
    Type: Application
    Filed: August 17, 2017
    Publication date: January 10, 2019
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jie FU, Xiaochuan CHEN, Shengji YANG, Lei WANG, Yankai GAO, Dongni LIU, Han YUE, Li XIAO, Pengcheng LU, Mingfu HAN
  • Publication number: 20180240430
    Abstract: A display device and a driving method thereof are provided. The driving method includes supplying a first voltage Vp1 to a sub-pixel of the display device through data lines in a first stage of a control period for displaying an image. A time for displaying the image includes a plurality of control periods, and the control period includes the first stage and at least a second stage following the first stage. The driving method also includes supplying a second voltage Vp2 to the sub-pixel through the data lines in the second stage. A gate scanning frequency of the first stage is F1 and a gate scanning frequency of the second stage is F2. When the first stage ends, the sub-pixel has a pixel voltage Vp3, F1<F2, and |Vp1|?|Vp2|>|Vp3|.
    Type: Application
    Filed: June 22, 2017
    Publication date: August 23, 2018
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yoonsung Um, Zheng Fang, Chengte Lai, Yunsik Im, Yankai Gao
  • Publication number: 20170273160
    Abstract: A system for monitoring a back light module is provided. The system includes an obtaining unit configured to obtain an intensity of output light from the back light module, a detection unit configured to detect whether the intensity of the output light from the back light module is greater than a preset value, and a control unit configured to control the back light module to reduce the intensity of the output light in response to detecting that the intensity of the output light is greater than the preset value, such that the reduced intensity of the output light is equal to or greater than the preset value.
    Type: Application
    Filed: July 29, 2016
    Publication date: September 21, 2017
    Inventors: Yankai GAO, Chul Gyu JUNG, CHENG-TE LAI, Chengqi ZHOU