Patents by Inventor Sheng-Kai Fang

Sheng-Kai Fang 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: 12223920
    Abstract: A backlight control circuit for a surface light emitting device is provided. The backlight control circuit includes a driving circuit. The driving circuit is configured to generate a plurality of driving currents to drive the surface light emitting device such that a plurality of backlight blocks of the surface light emitting device generate a plurality of brightness values. The surface light emitting device is divided into a first backlight area and a second backlight area. The second backlight area is closer to an edge of the surface light emitting device than the first backlight area. A first driving current of the plurality of driving currents is utilized for driving the light source of the first backlight area. A second driving current of the plurality of driving currents is utilized for driving the light source of the second backlight area. The second driving current is greater than the first driving current.
    Type: Grant
    Filed: January 2, 2024
    Date of Patent: February 11, 2025
    Assignee: Radiant Opto-Electronics Corporation
    Inventors: Li-Fei Wang, Yu-Lin Hsieh, Sheng-Kai Fang, Pei-Ling Kao
  • Publication number: 20240144890
    Abstract: A backlight control circuit for a surface light emitting device is provided. The backlight control circuit includes a driving circuit. The driving circuit is configured to generate a plurality of driving currents to drive the surface light emitting device such that a plurality of backlight blocks of the surface light emitting device generate a plurality of brightness values. The surface light emitting device is divided into a first backlight area and a second backlight area. The second backlight area is closer to an edge of the surface light emitting device than the first backlight area. A first driving current of the plurality of driving currents is utilized for driving the light source of the first backlight area. A second driving current of the plurality of driving currents is utilized for driving the light source of the second backlight area. The second driving current is greater than the first driving current.
    Type: Application
    Filed: January 2, 2024
    Publication date: May 2, 2024
    Applicant: Radiant Opto-Electronics Corporation
    Inventors: Li-Fei Wang, Yu-Lin Hsieh, Sheng-Kai Fang, Pei-Ling Kao
  • Patent number: 11769461
    Abstract: A backlight control method for a surface light-emitting device is provided. The backlight control method includes generating a plurality of driving currents to drive the surface light-emitting device such that a plurality of backlight zones generate a plurality of brightness values, measuring the plurality of brightness values of the plurality of backlight zones, calculating a plurality of uniformities of the plurality of backlight zones according to the plurality of brightness values and setting a plurality of target uniformities, generating a plurality of adjustment values according to the plurality of uniformities, the plurality of target uniformities and a plurality of adjustment coefficients corresponding to the plurality of backlight zones, and generating a plurality of adjusted driving currents to drive the plurality of backlight zones according to the plurality of adjustment values and the plurality of driving currents.
    Type: Grant
    Filed: August 29, 2022
    Date of Patent: September 26, 2023
    Assignee: Radiant Opto-Electronics Corporation
    Inventors: Li-Fei Wang, Yu-Lin Hsieh, Sheng-Kai Fang, Pei-Ling Kao
  • Publication number: 20230077136
    Abstract: A backlight control method for a surface light-emitting device is provided. The backlight control method includes generating a plurality of driving currents to drive the surface light-emitting device such that a plurality of backlight zones generate a plurality of brightness values, measuring the plurality of brightness values of the plurality of backlight zones, calculating a plurality of uniformities of the plurality of backlight zones according to the plurality of brightness values and setting a plurality of target uniformities, generating a plurality of adjustment values according to the plurality of uniformities, the plurality of target uniformities and a plurality of adjustment coefficients corresponding to the plurality of backlight zones, and generating a plurality of adjusted driving currents to drive the plurality of backlight zones according to the plurality of adjustment values and the plurality of driving currents.
    Type: Application
    Filed: August 29, 2022
    Publication date: March 9, 2023
    Applicant: Radiant Opto-Electronics Corporation
    Inventors: Li-Fei Wang, Yu-Lin Hsieh, Sheng-Kai Fang, Pei-Ling Kao