Patents by Inventor Ki Duck Park

Ki Duck Park 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: 9335458
    Abstract: A backlight unit and an LCD device using the same are provided. The backlight unit includes a light guide panel, a light source unit disposed at a rear-direction lower end of the light guide panel, an optical film disposed in a front direction of the light guide panel to face the light source unit and configured to reflect light emitted from the light source unit, and an optical sheet part disposed in the front direction of the light guide panel, and configured to change a travel direction of the light, which is output from the light guide panel, to a direction vertical to the light guide panel.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: May 10, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Ki Duck Park, Hoan Su Shim, Hyung Seok Bang
  • Publication number: 20150062482
    Abstract: A backlight unit and an LCD device using the same are provided. The backlight unit includes a light guide panel, a light source unit disposed at a rear-direction lower end of the light guide panel, an optical film disposed in a front direction of the light guide panel to face the light source unit and configured to reflect light emitted from the light source unit, and an optical sheet part disposed in the front direction of the light guide panel, and configured to change a travel direction of the light, which is output from the light guide panel, to a direction vertical to the light guide panel.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 5, 2015
    Inventors: Ki Duck Park, Hoan Su Shim, Hyung Seok Bang
  • Patent number: 8785038
    Abstract: A negative electrode active material and a secondary battery are provided. The negative electrode active material can be useful in maintaining excellent cell efficiency and lifespan while showing high-capacity properties, and the secondary battery may be manufactured using the negative electrode active material.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: July 22, 2014
    Assignee: Iljin Electric Co., Ltd.
    Inventors: Jae Woong Kim, Seung Chul Lee, Ki Duck Park, Chul Gyu Bae, Jong Goo Kang, Yoon Seong Cho
  • Publication number: 20130130101
    Abstract: A negative electrode active material and a secondary battery are provided. The negative electrode active material can be useful in maintaining excellent cell efficiency and lifespan while showing high-capacity properties, and the secondary battery may be manufactured using the negative electrode active material.
    Type: Application
    Filed: November 19, 2010
    Publication date: May 23, 2013
    Inventors: Jae Woong Kim, Seung Chul Lee, Ki Duck Park, Chul Gyu Bae, Jong Goo Kang, Yoon Seong Cho
  • Patent number: 8149352
    Abstract: A backlight unit which prevents an initial driving malfunction is disclosed. The backlight unit includes: a bottom cover opened upwardly; a reflective sheet disposed in the inner surface of the bottom cover; a plurality of lamps arranged in a fixed interval on the reflective sheet; a driver disposed on the rear surface of the bottom cover; an auxiliary light source loaded on the driver; a first hole formed in a region of the bottom cover opposite to the auxiliary light source; and a hole region, on the reflective sheet, including one of plural micro-penetration holes and plural slit holes and opposite the first hole on the reflective sheet.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: April 3, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Ki Duck Park, Hyun Woo Kim
  • Publication number: 20100103340
    Abstract: A backlight unit which prevents an initial driving malfunction is disclosed. The backlight unit includes: a bottom cover opened upwardly; a reflective sheet disposed in the inner surface of the bottom cover; a plurality of lamps arranged in a fixed interval on the reflective sheet; a driver disposed on the rear surface of the bottom cover; an auxiliary light source loaded on the driver; a first hole formed in a region of the bottom cover opposite to the auxiliary light source; and a hole region, on the reflective sheet, including one of plural micro-penetration holes and plural slit holes and opposite the first hole on the reflective sheet.
    Type: Application
    Filed: October 27, 2009
    Publication date: April 29, 2010
    Inventors: Ki Duck Park, Hyun Woo Kim
  • Patent number: 7518572
    Abstract: A temperature of the plasma display panel is detected by a temperature sensor. An apparatus includes a display panel, a plate disposed adjacent to a rear surface of the panel, and a board disposed substantially parallel to the plate. A temperature sensor is formed on the board, and the temperature sensor is disposed between the plate and the board.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: April 14, 2009
    Assignee: LG Electronics Inc.
    Inventors: Junc Hee Kong, Ki Duck Park
  • Publication number: 20080136746
    Abstract: A temperature of the plasma display panel is detected by a temperature sensor. An apparatus includes a display panel, a plate disposed adjacent to a rear surface of the panel, and a board disposed substantially parallel to the plate. A temperature sensor is formed on the board, and the temperature sensor is disposed between the plate and the board.
    Type: Application
    Filed: February 12, 2008
    Publication date: June 12, 2008
    Inventors: Jun Hee KONG, Ki Duck Park
  • Publication number: 20040233133
    Abstract: An apparatus of driving a plasma display panel capable of accurately detecting a temperature of the plasma display panel for a stable driving of the plasma display panel is disclosed.
    Type: Application
    Filed: May 21, 2004
    Publication date: November 25, 2004
    Applicant: LG Electronics Inc.
    Inventors: Junc Hee Kong, Ki Duck Park