Patents by Inventor Chang Chuan-Ming

Chang Chuan-Ming 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).

  • Indium gallium nitride light emitting diode
    Patent number: 6078064
    Abstract: A transparent conductive layer is deposited between the electrode and the semiconductor diode to spread the current evenly to the diode and to reduce the series resistance. Tin indium oxide can be used as the transparent conductive layer. The transparent conductive layer is particularly applicable to a blue light emitting diode, where InGaN is used as the light emitting layer.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: June 20, 2000
    Assignee: Epistar Co.
    Inventors: Jou Ming-Jiunn, Lee Biing-Jye, Jacob C. Tarn, Chang Chuan-Ming, Liu Chia-Cheng