Patents by Inventor Lo Wu-Tsung

Lo Wu-Tsung 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 FOR FABRICATING SEMICONDUCTOR LIGHT-EMITTING DEVICE
    Publication number: 20130029440
    Abstract: A semiconductor light-emitting device is disclosed. The semiconductor light-emitting device comprises a multilayer epitaxial structure disposed on a substrate. The substrate has a predetermined lattice direction perpendicular to an upper surface thereof, wherein the predetermined lattice direction is angled toward [0 11] or [01 1] from [100], or toward [011] or [0 11] from [ 100] so that the upper surface of the substrate comprises at least two lattice planes with different lattice plane directions. The multilayer epitaxial structure has a roughened upper surface perpendicular to the predetermined lattice direction. The invention also discloses a method for fabricating a semiconductor light-emitting device.
    Type: Application
    Filed: October 1, 2012
    Publication date: January 31, 2013
    Applicant: Epistar Corporation
    Inventors: Ya-ju LEE, Ta-Cheng Hsu, Ming-Ta Chin, Yen-Wen Chen, Lo Wu-Tsung, Chung-Yuan Li, Min-Hsun Hsieh
  • Semiconductor light-emitting device and fabrication method thereof
    Publication number: 20070221929
    Abstract: A semiconductor light-emitting device is disclosed. The semiconductor light-emitting device comprises a multilayer epitaxial structure disposed on a semiconductor substrate. The semiconductor substrate has a predetermined lattice direction perpendicular to an upper surface thereof, wherein the predetermined lattice direction is angled toward [0?1] or [01?] from [100], or toward [011] or [0 ii] from [?00] so that the upper surface of the semiconductor substrate comprises at least two lattice planes with different lattice plane directions. The multilayer epitaxial structure has a roughened upper surface perpendicular to the predetermined lattice direction. The invention also discloses a method for fabricating a semiconductor light-emitting device.
    Type: Application
    Filed: March 26, 2007
    Publication date: September 27, 2007
    Inventors: Ya-Ju Lee, Ta-Cheng Hsu, Ming-Ta Chin, Yen-Wen Chen, Lo Wu-Tsung, Li Chung-Yuan, Min-Hsun Hsieh