Patents by Inventor Chao-Pao Chuang

Chao-Pao Chuang 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).

  • Direct-type back light module with photo sensors
    Patent number: 6914389
    Abstract: A direct-type backlight module with photo sensors has a plurality of lamps, a plurality of the photo sensors for detecting illumination of corresponding lamps, a comparative and arithmetic unit for processing signals generated by the photo sensors, and a main lamp driving loop for receiving feedback signals generated by the comparative and arithmetic unit and adjusting a lamp current voltage outputted by a minor lamp driving loop of each lamp, so as to achieve an uniform illumination of each lamp.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: July 5, 2005
    Assignee: AU Optronics Corp.
    Inventors: Chien-Jen Chang, Chao-Pao Chuang
  • DIRECT-TYPE BACK LIGHT MODULE WITH PHOTO SENSORS
    Publication number: 20040246722
    Abstract: A direct-type backlight module with photo sensors has a plurality of lamps, a plurality of the photo sensors for detecting illumination of corresponding lamps, a comparative and arithmetic unit for processing signals generated by the photo sensors, and a main lamp driving loop for receiving feedback signals generated by the comparative and arithmetic unit and adjusting a lamp current voltage outputted by a minor lamp driving loop of each lamp, so as to achieve an uniform illumination of each lamp.
    Type: Application
    Filed: August 25, 2003
    Publication date: December 9, 2004
    Inventors: Chien-Jen Chang, Chao-Pao Chuang