Patents by Inventor His-Hsuan Yen

His-Hsuan Yen 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).

  • Alternating current light-emitting device and fabrication method thereof
    Patent number: 8486734
    Abstract: An alternating current light-emitting device includes a substrate, a plurality of microdie light-emitting elements formed on the substrate, a rectifying element-dedicated member formed on a surface of a portion of microdie light-emitting elements, a rectifying unit formed on the rectifying element-dedicated member and provided with at least four rectifying elements forming a Wheatstone bridge circuit, and an electrically conductive structure electrically connecting the rectifying elements and the microdie light-emitting elements. With the rectifying unit being formed on the rectifying element-dedicated member, the rectifying elements are highly tolerant of reverse bias and feature low starting forward bias. Also, the present invention provides a method for fabricating an alternating current light-emitting device.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: July 16, 2013
    Assignee: Epistar Corporation
    Inventors: His-Hsuan Yen, Wen-Yung Yeh