Patents by Inventor O-Seung Yang

O-Seung Yang 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).

  • Array of optical integrated devices with micro-lenses
    Patent number: 5898191
    Abstract: An optical integrated device having an even height such that it can be easily arrayed or integrated with other devices in a single substrate. The device includes a semi-conductor substrate having a substrate-side electrode which is formed on one side of the semi-conductor substrate. A micro-lens layer is epitaxially grown on the opposite side to where the substrate-side electrode is formed. The opposite side also has a hemispherically etched surface. The device also includes epitaxial layers which are grown on a whole area on the micro lens layer and a dielectric film which is formed on the epitaxial layers. Additionally, an epilayer-side electrode is formed on a whole area of the dielectric film.
    Type: Grant
    Filed: January 2, 1996
    Date of Patent: April 27, 1999
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Young-Se Kwon, O-Seung Yang