Patents by Inventor Youn-loon Sung

Youn-loon Sung 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).

  • Ridge-waveguide semiconductor laser diode
    Publication number: 20060280215
    Abstract: A ridge-waveguide semiconductor laser diode with an improved current injection structure is provided. The ridge-waveguide semiconductor laser diode includes: a substrate; a lower multi-semiconductor layer formed on the substrate; an active layer formed on the lower multi-semiconductor layer; an upper multi-semiconductor layer having a ridge portion and formed on the active layer; and an upper electrode formed on the upper multi-semiconductor layer, wherein the upper electrode covers at least one side surface of the ridge portion.
    Type: Application
    Filed: August 18, 2006
    Publication date: December 14, 2006
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joong-kon Son, Tae-hoon Jang, Youn-loon Sung, Tan Sakong, Ho-sun Paek, Sung-nam Lee