Patents by Inventor Weichuan Yao

Weichuan Yao 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).

  • Display off-time sensing
    Patent number: 11380231
    Abstract: Electronic devices and methods for compensating for aging or other effects in a display during a non-transmitting state (off state) of the display. Sensing may include emissive element sensing of the display and/or thin film transistor sensing of the display. Compensating for the effects may preserve or increase a uniformity of transmission of the display.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: July 5, 2022
    Assignee: Apple Inc.
    Inventors: Chin-Wei Lin, Hung Sheng Lin, Hyunsoo Kim, Hyunwoo Nho, Injae Hwang, Jesse A. Richmond, Jie Won Ryu, Junhua Tan, Kavinaath Murugan, Kingsuk Brahma, Shengkui Gao, Shiping Shen, Sun-Il Chang, Myung-Je Cho, Yafei Bi, Myungjoon Choi, Weichuan Yao, Chaohao Wang
  • Differentiating voltage degradation due to aging from current-voltage shift due to temperature in displays
    Patent number: 10943541
    Abstract: Current-voltage shift determination circuitry of a processing core complex coupled to the electronic display determines total current-voltage shift values at a pixel. The current-voltage shift determination circuitry then determines temperature-based current-voltage shift values at the pixel. The current-voltage shift determination circuitry extracts the temperature-based current-voltage shift values from the total current-voltage shift values to determine age-based voltage degradation values. Display compensation circuitry of the processing core complex adjusts display of image data by the pixel based on the age-based voltage degradation values. In this manner, voltage degradation due to pixel aging may be determined separately from current-voltage shift due to temperature, and, as such, be more accurately compensated for, resulting in better display of image data.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: March 9, 2021
    Assignee: Apple Inc.
    Inventors: Junhua Tan, Hsin-Ying Chiu, Sun-Il Chang, Yunhui Hou, Jie Won Ryu, Hyunwoo Nho, Weichuan Yao, Shiping Shen, Injae Hwang, Hyunsoo Kim, Myungjoon Choi, Shengkui Gao, Chaohao Wang, Kingsuk Brahma, Jesse Aaron Richmond, Myung-Je Cho, Changki Min, Wei H. Yao