Patents Assigned to Guang-Sup Cho
  • Patent number: 6674250
    Abstract: The present invention discloses a backlight including external electrode fluorescent lamps and a method for driving the backlight. The backlight includes fluorescent lamps having external electrodes made of an electrically conductive material for wrapping the outer peripheral surfaces including edge cross-sections on both ends of a glass tube with a layer of fluorescent substance applied thereon. The backlight is constructed in a manner that a plurality of such fluorescent lamps are installed at the outer portions of a plastic light guide, and an alternating current type power source is applied from the outside to the fluorescent lamps by installing a plurality of the fluorescent lamps between a reflecting plate and a diffusing plate and electrically connecting them with one another.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: January 6, 2004
    Assignee: Guang-Sup Cho
    Inventors: Guang-Sup Cho, Eun-Ha Choi
  • Publication number: 20020021564
    Abstract: The present invention discloses a backlight including external electrode fluorescent lamps and a method for driving the backlight. The backlight includes fluorescent lamps having external electrodes made of an electrically conductive material for wrapping the outer peripheral surfaces including edge cross-sections on both ends of a glass tube with a layer of fluorescent substance applied thereon. The backlight is constructed in a manner that a plurality of such fluorescent lamps are installed at the outer portions of a plastic light guide, and an alternating current type power source is applied from the outside to the fluorescent lamps by installing a plurality of the fluorescent lamps between a reflecting plate and a diffusing plate and electrically connecting them with one another.
    Type: Application
    Filed: March 30, 2001
    Publication date: February 21, 2002
    Applicant: GUANG-SUP CHO
    Inventors: Guang-Sup Cho, Eun-Ha Choi