Patents by Inventor Yueh-bao Lee

Yueh-bao Lee 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).

  • DC to DC conversion circuit with variable output voltage
    Patent number: 7459866
    Abstract: The present invention provides a DC to DC conversion circuit, comprising a DC power supply, a DC to DC converter, a power management IC and a load, wherein the load may be a backlight source of a liquid crystal display. The power management IC controls the DC to DC converter to convert a DC voltage supplied by the DC power supply to an output voltage of the DC to DC converter, which is supplied to the load. The power management IC is capable of controlling the DC to DC converter to adjust the output voltage to a minimum voltage actually needed by the load according to the variation of the minimum voltage which is actually needed by the load.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: December 2, 2008
    Assignee: AU Optronics Corp.
    Inventors: Ya-yun Yu, Yueh-bao Lee, Jian-Shen Li
  • DC TO DC CONVERSION CIRCUIT WITH VARIABLE OUTPUT VOLTAGE
    Publication number: 20080018266
    Abstract: The present invention provides a DC to DC conversion circuit, comprising a DC power supply, a DC to DC converter, a power management IC and a load, wherein the load may be a backlight source of a liquid crystal display. The power management IC controls the DC to DC converter to convert a DC voltage supplied by the DC power supply to an output voltage of the DC to DC converter, which is supplied to the load. The power management IC is capable of controlling the DC to DC converter to adjust the output voltage to a minimum voltage actually needed by the load according to the variation of the minimum voltage which is actually needed by the load.
    Type: Application
    Filed: March 5, 2007
    Publication date: January 24, 2008
    Applicant: AU Optronics Corp.
    Inventors: Ya-yun Yu, Yueh-bao Lee, Jian-shen Li