Patents by Inventor Heum-il Baek

Heum-il Baek 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: 20010048496
    Abstract: A transflective LCD device improves a light transmittance in both the transmissive mode and the reflective mode and improves efficiency in the use of the light regardless of wavelength. To properly control the ON/OFF-switch of the blue wavelength band or the red wavelength band, the transflective LCD device adopts a half wave plate (&lgr;/2) and changes the optic axes of the polarizers and the retardation film.
    Type: Application
    Filed: April 17, 2001
    Publication date: December 6, 2001
    Inventor: Heum-Il Baek
  • Publication number: 20010038429
    Abstract: The present invention provides an array substrate for use in reflective LCD device that has a plurality of concave holes. Each concave hole acts as a drain contact hole and as means of increasing the reflective area of a reflective electrode.
    Type: Application
    Filed: February 12, 2001
    Publication date: November 8, 2001
    Inventors: Heum-Il Baek, Yong-Beom Kim
  • Publication number: 20010013847
    Abstract: A transmissive display device using a micro light modulator that is capable of improving a light efficiency. In the display device, light-path converting members are provided on stationary members to change a path of a light inputted obliquely through stationary members and movable members vertically with respect to a display screen.
    Type: Application
    Filed: December 4, 2000
    Publication date: August 16, 2001
    Inventors: Yong Sung Ham, Heum Il Baek, Je Hong Kim