Patents by Inventor Ruei-Sian Zeng

Ruei-Sian Zeng 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).

  • METHOD OF LASER LIFT-OFF FOR LEDS
    Publication number: 20130130420
    Abstract: A laser lift-off method for LEDs forms an elevation difference structure on a conversion substrate corresponding to one isolation zone of an epitaxial layer before epitaxy is formed on the conversion substrate to form the epitaxial layer. The elevation difference structure can release stress between the material interfaces, thus can reduce broken probability while lifting off the conversion substrate and epitaxial layer via laser and further improve production yield.
    Type: Application
    Filed: November 17, 2011
    Publication date: May 23, 2013
    Inventors: Fu-Bang CHEN, Ruei-Sian Zeng, Chih-Sung Chang