Patents by Inventor Yu-hang CHOI

Yu-hang CHOI 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).

  • III-NITRIDE SEMICONDUCTOR LIGHT EMITTING DEVICE AND METHOD FOR FABRICATING THE SAME
    Publication number: 20110042711
    Abstract: The present invention relates to III-nitride semiconductor light emitting device and a method for fabricating the same. The III-nitride semiconductor light emitting device includes: a substrate; a plurality of III-nitride semiconductor layers grown over the substrate and including an active layer for generating light by recombination of electrons and holes; and a protrusion formed on a surface of the substrate over which the semiconductor layers are to be grown, a section of the protrusion which is in parallel to the growth direction of the semiconductor layers being formed in a triangular shape.
    Type: Application
    Filed: December 31, 2009
    Publication date: February 24, 2011
    Applicant: WOOREE LST CO., LTD.
    Inventors: Yu-hang CHOI, Chae-seok LIM, Keuk KIM, Chi-kwon PARK
  • III-NITRIDE SEMICONDUCTOR LIGHT EMITTING DEVICE AND METHOD FOR FABRICATING THE SAME
    Publication number: 20100224894
    Abstract: The present disclosure relates to a III-nitride semiconductor light emitting device, including: a substrate; a plurality of III-nitride semiconductor layers grown over the substrate and including an active layer generating light by recombination of electrons and holes; a scattering surface provided on the substrate to scatter the light generated in the active layer; and a sub-scattering portion ruggedly formed on the scattering surface.
    Type: Application
    Filed: December 30, 2009
    Publication date: September 9, 2010
    Applicant: WOOREE LST CO., LTD
    Inventors: Keuk KIM, Yu-hang CHOI, Chae-seok LIM, Chi-kwon PARK