Patents by Inventor Jigeun Nam

Jigeun Nam 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: 8663750
    Abstract: A method of fabricating backlight unit is disclosed. The backlight unit method of fabricating backlight unit includes, preparing a base member having a predetermined thickness, applying ultraviolet curing resin on a surface of the base member, transferring prism patterns to the ultraviolet curing resin using a flexible mold having engraved patterns corresponding to the prism patterns, and curing the prism patterns before the prism patterns are separated from the engraved patterns of the flexible mold.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: March 4, 2014
    Assignee: LG Display Co. Ltd.
    Inventors: Jigon Kim, Jeongmin Moon, Gibin Kim, Gilwon Han, Jigeun Nam, Chounsung Kang
  • Patent number: 8482507
    Abstract: A liquid crystal display and a driving method thereof capable of improving contrast properties by implementing a local dimming and achieving the slimness of the liquid crystal display. The liquid crystal display comprises a liquid crystal display panel, a backlight unit including a light guide plate part in which a plurality of light guide channels are formed, and a plurality of light sources for illuminating light to the light guide channels, a division driving controller for mapping an input picture to a plurality of blocks in which a plurality of data channels are intersected with the plurality of light guide channels, analyzing luminance of the input picture for each block, determining dimming values of the plurality of light sources, and independently modulating the luminance of the input picture for each block based on the analyzed result, and a light source driver for independently controlling luminance of the light sources responding to the dimming values.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: July 9, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Jaejung Han, Jigeun Nam, Jintaek Choi
  • Patent number: 7946747
    Abstract: A backlight unit is disclosed. The backlight unit includes a light source unit generating light, a beam profile changer at the side of the light source unit, a reflective plate under the beam profile changer, and an optical film positioned on the beam profile changer and the reflective plate. The beam profile changer includes an incident surface facing the light source unit and an emitting surface positioned in a direction parallel to the incident surface. The reflective plate includes a first reflective surface having a first reflective area and a second reflective surface having a second reflective area. The second reflective surface is inclined from an end of the first reflective surface to an upward direction.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: May 24, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Jigon Kim, Jeongmin Moon, Gibin Kim, Gilwon Han, Jigeun Nam, Chounsung Kang
  • Publication number: 20100253615
    Abstract: A liquid crystal display and a driving method thereof capable of improving contrast properties by implementing a local dimming and achieving the slimness of the liquid crystal display. The liquid crystal display comprises a liquid crystal display panel, a backlight unit including a light guide plate part in which a plurality of light guide channels are formed, and a plurality of light sources for illuminating light to the light guide channels, a division driving controller for mapping an input picture to a plurality of blocks in which a plurality of data channels are intersected with the plurality of light guide channels, analyzing luminance of the input picture for each block, determining dimming values of the plurality of light sources, and independently modulating the luminance of the input picture for each block based on the analyzed result, and a light source driver for independently controlling luminance of the light sources responding to the dimming values.
    Type: Application
    Filed: December 2, 2009
    Publication date: October 7, 2010
    Inventors: Jaejung Han, Jigeun Nam, Jintaek Choi
  • Publication number: 20090213570
    Abstract: A method of fabricating backlight unit is disclosed. The backlight unit method of fabricating backlight unit includes, preparing a base member having a predetermined thickness, applying ultraviolet curing resin on a surface of the base member transferring prism patterns to the ultraviolet curing resin using a flexible mold having engraved patterns corresponding to the prism patterns, and curing the prism patterns before the prism patterns are separated from the engraved patterns of the flexible mold.
    Type: Application
    Filed: December 5, 2008
    Publication date: August 27, 2009
    Inventors: Jigon Kim, Jeongmin Moon, Gibin Kim, Gilwon Han, Jigeun Nam, Chounsung Kang
  • Publication number: 20090213569
    Abstract: A backlight unit is disclosed. The backlight unit includes a light source unit generating light, a beam profile changer at the side of the light source unit, a reflective plate under the beam profile changer, and an optical film positioned on the beam profile changer and the reflective plate. The beam profile changer includes an incident surface facing the light source unit and an emitting surface positioned in a direction parallel to the incident surface. The reflective plate includes a first reflective surface having a first reflective area and a second reflective surface having a second reflective area. The second reflective surface is inclined from an end of the first reflective surface to an upward direction.
    Type: Application
    Filed: December 19, 2008
    Publication date: August 27, 2009
    Inventors: Jigon Kim, Jeongmin Moon, Gibin Kim, Gilwon Han, Jigeun Nam, Chounsung Kang