Patents by Inventor Ping-Fei Shen

Ping-Fei Shen 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).

  • Semiconductor light-emitting device
    Patent number: 7953134
    Abstract: A semiconductor light-emitting device includes a substrate, a first cladding layer over the substrate, an active region on the first cladding layer, and a second cladding layer on the active region, wherein the active region includes a first type barrier layer that is doped and a second type barrier layer that is undoped, the first type barrier layer being closer to the first cladding layer than the second type barrier layer.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: May 31, 2011
    Assignee: Epistar Corporation
    Inventors: Ming-Ta Chin, Kuo-Feng Huang, Ping-Fei Shen, Ching-Jen Wang, Shih-Pang Chang
  • SEMICONDUCTOR LIGHT-EMITTING DEVICE
    Publication number: 20100166033
    Abstract: A semiconductor light-emitting device includes a substrate, a first cladding layer over the substrate, an active region on the first cladding layer, and a second cladding layer on the active region, wherein the active region includes a first type barrier layer that is doped and a second type barrier layer that is undoped, the first type barrier layer being closer to the first cladding layer than the second type barrier layer.
    Type: Application
    Filed: December 31, 2008
    Publication date: July 1, 2010
    Inventors: Ming-Ta CHIN, Kuo-Feng HUANG, Ping-Fei SHEN, Ching-Jen WANG, Shih-Pang CHANG