Patents by Inventor Chiah-Hung Sun

Chiah-Hung Sun 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).

  • Lamp drive circuit for driving a number of lamps and balancing currents flowing through the lamps
    Patent number: 7940011
    Abstract: A lamp drive circuit used for driving a number of lamps is provided. The lamps are used in the backlight module. The backlight module is used for providing a light source when a liquid crystal display displays. The lamps are respectively electrically connected to a coil. The coils substantially have the same coil turns and have the same magnetic circuit, so that the currents flowing through the lamps are balanced.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: May 10, 2011
    Assignee: AU Optronics Corp.
    Inventors: Chin-Der Wey, Yi-Chun Yeh, Chiah-Hung Sun, Hsing-Ju Chen