Patents by Inventor Bong Taek Hong

Bong Taek Hong 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).

  • Prism sheet of liquid crystal display device and backlight unit using the same
    Patent number: 7252428
    Abstract: A prism sheet of an LCD includes a body part made of a transparent resin material and a plurality of polypyramid-shaped optical unit structures formed in a intaglio type on the body part. The plurality of optical unit structures have intaglio-type polypyramid shapes in an inside of their polygonal structure. A center of the intaglio portion corresponds to a vertex of the polypyramid, thereby forming a point.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: August 7, 2007
    Assignee: LG.Electronics, Inc.
    Inventors: Sang Gou Lee, Chang Jong Kim, Young Gun Kim, Yun Ho Choi, Ho Sung Chin, Bong Taek Hong, Kab Jin Hwang, Ung Sang Lee, Chul Young Kim