Patents by Inventor Huiqiang ZHANG

Huiqiang ZHANG 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 defect detection method, apparatus, and device for display screen
    Patent number: 10928331
    Abstract: The present invention discloses a display defect detection method, apparatus, and device for a display screen. The method includes: identifying a suspected defective pixel from a first image of a front side of a tested display screen, where the first image is shot when the tested display screen is in a solid-color display state; identifying an external smudgy pixel from a second image of the front side of the tested display screen, where the second image is shot when the tested display screen is in a die-out state and the front side is illuminated by a diffuse reflection light source; detecting, for each suspected defective pixel identified from the first image, whether a pixel at a same location in the second image is the external smudgy pixel; and if no, determining the suspected defective pixel as a display defective pixel.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: February 23, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Huiqiang Zhang
  • DISPLAY DEFECT DETECTION METHOD, APPARATUS, AND DEVICE FOR DISPLAY SCREEN
    Publication number: 20180246044
    Abstract: The present invention discloses a display defect detection method, apparatus, and device for a display screen. The method includes: identifying a suspected defective pixel from a first image of a front side of a tested display screen, where the first image is shot when the tested display screen is in a solid-color display state; identifying an external smudgy pixel from a second image of the front side of the tested display screen, where the second image is shot when the tested display screen is in a die-out state and the front side is illuminated by a diffuse reflection light source; detecting, for each suspected defective pixel identified from the first image, whether a pixel at a same location in the second image is the external smudgy pixel; and if no, determining the suspected defective pixel as a display defective pixel.
    Type: Application
    Filed: April 25, 2018
    Publication date: August 30, 2018
    Inventor: Huiqiang ZHANG
  • Solar powered monitor
    Patent number: D1077021
    Type: Grant
    Filed: November 22, 2023
    Date of Patent: May 27, 2025
    Assignee: Guangdong Shone Lighting Co., Ltd
    Inventors: Huiqiang Zhang, Yaojun Long, Jiahuan Huang