Patents by Inventor Kee-Doo Kim

Kee-Doo Kim 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).

  • Patent number: 7872717
    Abstract: A liquid crystal display device having vertical alignment films formed on pixel electrodes of a thin film transistor substrate and a common electrode of a common electrode substrate, and horizontal alignment films formed in a shape of plural belts on the vertical alignment films. The horizontal alignment film of the thin film transistor substrate and the horizontal alignment film of the common electrode substrate are substantially perpendicular to each other. Accordingly, a liquid crystal layer interposed between the two substrates includes a splay area, a homeotropic area, and hybrid area, wherein the hybrid area is disposed around the splay area and the homeotropic area. Since the hybrid area serves as an alignment transition seed, the liquid crystal molecules of the splay area can be easily changed to have a band alignment. Therefore, it is possible to decrease an alignment transition voltage and to enhance an alignment transition speed.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: January 18, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Tae-Hyeog Jung, Kee-Doo Kim, Hae-Jin Heo
  • Publication number: 20060077328
    Abstract: A liquid crystal display device having vertical alignment films formed on pixel electrodes of a thin film transistor substrate and a common electrode of a common electrode substrate, and horizontal alignment films formed in a shape of plural belts on the vertical alignment films. The horizontal alignment film of the thin film transistor substrate and the horizontal alignment film of the common electrode substrate are substantially perpendicular to each other. Accordingly, a liquid crystal layer interposed between the two substrates includes a splay area, a homeotropic area, and hybrid area, wherein the hybrid area is disposed around the splay area and the homeotropic area. Since the hybrid area serves as an alignment transition seed, the liquid crystal molecules of the splay area can be easily changed to have a band alignment. Therefore, it is possible to decrease an alignment transition voltage and to enhance an alignment transition speed.
    Type: Application
    Filed: October 6, 2005
    Publication date: April 13, 2006
    Inventors: Tae-Hyeog Jung, Kee-Doo Kim, Hae-Jin Heo