Patents by Inventor Chung-Ta HSU

Chung-Ta HSU 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).

  • PEC ETCHING OF (20-2-1) SEMIPOLAR GALLIUM NITRIDE FOR EXTERNAL EFFICIENCY ENHANCEMENT IN LIGHT EMITTING DIODE APPLICATIONS
    Publication number: 20140167059
    Abstract: A method of performing a photoelectrochemical (PEC) etch on an exposed surface of a semipolar {20-2-1} III-nitride semiconductor, for improving light extraction from and for enhancing external efficiency of one or more active layers formed on or above the semipolar {20-2-1} III-nitride semiconductor.
    Type: Application
    Filed: August 30, 2013
    Publication date: June 19, 2014
    Inventors: Chung-Ta Hsu, Chia-Yen Huang, Yuji Zhao, Shih-Chieh Haung, Daniel F. Feezell, Steven P. DenBaars, Shuji Nakamura, James S. Speck
  • Autorotative digital photo frame
    Publication number: 20080236014
    Abstract: An autorotative digital photo frame comprises a microprocessor, the microprocessor allows the pictures read therein to be classified into both erect and transverse types, controls the photo frame to first display all the corresponding type of pictures depending on the erect or the transverse disposition type of the photo frame, and the microprocessor then controls the photo frame to display another type of pictures after it controls the photo frame to rotate 90 degree to allow every picture to fully use the space of the display panel and be enlarged to the size closest to the display panel. Whereby, a user can obtain a better visual effect.
    Type: Application
    Filed: March 29, 2007
    Publication date: October 2, 2008
    Inventors: Chun-Hao Chao, Chung-Ta HSU