Patents by Inventor Yeun-hyeok Yang

Yeun-hyeok Yang 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).

  • Liquid crystal display device including LED unit using current mirror circuit
    Patent number: 9123299
    Abstract: A liquid crystal display device includes a liquid crystal panel; a plurality of light emitting diode units to supply light to the liquid crystal panel; and a scan line and a light emission data line connected to the LED unit, wherein the scan line and the light emission data line transfer a scan signal and a light emission data current, respectively, wherein the LED unit includes: a switching circuit that is connected to the scan line and the light emission data line; a current mirror circuit that is connected to the switching circuit, and that outputs a light emission current in response to the light emission data current; and an LED that emits the light in response to the light emission current.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: September 1, 2015
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kee-Chul Kim, In-Jae Chung, Sin-Ho Kang, Yeun-hyeok Yang
  • LIQUID CRYSTAL DISPLAY DEVICE
    Publication number: 20110075072
    Abstract: A liquid crystal display device includes a liquid crystal panel; a plurality of light emitting diode units to supply light to the liquid crystal panel; and a scan line and a light emission data line connected to the LED unit, wherein the scan line and the light emission data line transfer a scan signal and a light emission data current, respectively, wherein the LED unit includes: a switching circuit that is connected to the scan line and the light emission data line; a current mirror circuit that is connected to the switching circuit, and that outputs a light emission current in response to the light emission data current; and an LED that emits the light in response to the light emission current.
    Type: Application
    Filed: September 30, 2010
    Publication date: March 31, 2011
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Kee Chul Kim, In-Jae Chung, Sin-Ho Kang, Yeun-hyeok Yang