Patents by Inventor Hee-Sang YOON

Hee-Sang YOON 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).

  • Publication number: 20070274103
    Abstract: A light guide panel has upper and lower surfaces, which are opposite from each other, and first and second side surfaces, which are opposite from each other, to guide light rays inputted therein through the first side surface, toward the second side surface through internal reflection between the upper and lower surfaces. The light guide panel includes a plurality of dot patterns formed on the lower surface to reflect and diffuse incident light rays; first prism projections formed on the upper surface and extending parallel to one another to transmit and concentrate light rays reflected by the dot patterns; and second prism projections formed on the upper surface to be crossed with the first prism projections and extending parallel to one another to transmit and concentrate light rays reflected by the dot patterns.
    Type: Application
    Filed: April 19, 2007
    Publication date: November 29, 2007
    Inventors: Seong-Ha PARK, Hee-Sang YOON, Sang-Woon HAN, Joong-Wan PARK