Patents by Inventor Chang Ho Hyeon

Chang Ho Hyeon 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: 9483977
    Abstract: A method of driving an organic light emitting display device includes: receiving an image signal by sub-field with respect to a single frame comprising the N number of sub-fields (N is a natural number greater than 2) from the exterior; dividing a single sub-field into an address period and a display period and selectively calling a data signal of a single sub-field from the M number of sub-field memories (M is a natural number greater than 2); and applying the called data signal of the single sub-field to a sub-pixel.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: November 1, 2016
    Assignee: LG Display Co., Ltd.
    Inventor: Chang Ho Hyeon
  • Patent number: 8143784
    Abstract: A display device includes a transparent plate having a first area and a second area, a first conductive line on the second area of the transparent plate, a substrate having a third area and a fourth area on the first area of the transparent plate, a display element on the third area of the substrate, and a second conductive line on the fourth area of the substrate. The second conductive line is electrically coupled between the display element and the first conductive line, and the first and second conductive lines are on different planes.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: March 27, 2012
    Assignee: LG Electronics Inc.
    Inventors: Sang Tae Park, Myung Seop Kim, Jeong Dae Seo, Won Jae Yang, Hyun Ju Choi, Young Hoon Shin, Chang Ho Hyeon, Jong Moo Lee
  • Patent number: 7688288
    Abstract: Disclosed is a method for driving a plasma display panel that can prevent flicker and double false contour in a 50 Hz driving. The method includes: providing a plurality of 50 Hz frames which are inputted using subfield weights for constructing a 60 Hz frame; and rearranging the plurality of 50 Hz frames into a plurality of 60 Hz frames.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: March 30, 2010
    Assignee: LG Electronics Inc.
    Inventors: Byung Soo Song, Chang Ho Hyeon
  • Publication number: 20090134765
    Abstract: A display device and a temperature control unit having the same are disclosed. The display device includes a substrate with a display element, and a transparent plate which is in contact with the substrate and has a larger area than that of the substrate.
    Type: Application
    Filed: March 12, 2008
    Publication date: May 28, 2009
    Inventors: Sang Tae Park, Myung Seop Kim, Jeong Dae Seo, Won Jae Yang, Hyun Ju Choi, Young Hoon Shin, Chang Ho Hyeon, Jong Moon Lee
  • Patent number: 7474279
    Abstract: The present invention relates to a plasma display panel, and more particularly, to a method and apparatus for driving a plasma display panel. According to a first embodiment of the present invention, there is provided a method for driving a PDP including the steps of dividing two frame data items into three frame data items; and providing the divided frame data items to the PDP. According to a first embodiment of the present invention, there is provided a method for driving a PDP including the steps of dividing two frame data items into three frame data items; and providing the divided frame data items to the PDP. The method and apparatus for driving a PDP according to the present invention can reduce large area flicker and dynamic false contour noise in a high-resolution PDP.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: January 6, 2009
    Assignee: LG Electronics Inc.
    Inventors: Byung Soo Song, Chang Ho Hyeon, Hwan Yu Kim, Geun Soo Lim
  • Patent number: 7460139
    Abstract: The present invention relates to a plasma display panel, and more particularly, to a method and apparatus for driving a plasma display panel. According to a first embodiment of the present invention, there is provided a method for driving a PDP including the steps of dividing two frame data items into three frame data items; and providing the divided frame data items to the PDP. According to a first embodiment of the present invention, there is provided a method for driving a PDP including the steps of dividing two frame data items into three frame data items; and providing the divided frame data items to the PDP. The method and apparatus for driving a PDP according to the present invention can reduce large area flicker and dynamic false contour noise in a high-resolution PDP.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: December 2, 2008
    Assignee: LG Electronics Inc.
    Inventors: Byung Soo Song, Chang Ho Hyeon, Hwan Yu Kim, Geun Soo Lim
  • Publication number: 20080231565
    Abstract: A method of driving an organic light emitting display device includes: receiving an image signal by sub-field with respect to a single frame comprising the N number of sub-fields (N is a natural number greater than 2) from the exterior; dividing a single sub-field into an address period and a display period and selectively calling a data signal of a single sub-field from the M number of sub-field memories (M is a natural number greater than 2); and applying the called data signal of the single sub-field to a sub-pixel.
    Type: Application
    Filed: March 19, 2007
    Publication date: September 25, 2008
    Inventor: Chang Ho Hyeon
  • Publication number: 20080007487
    Abstract: The present invention relates to a plasma display panel, and more particularly, to a method and apparatus for driving a plasma display panel. According to a first embodiment of the present invention, there is provided a method for driving a PDP including the steps of dividing two frame data items into three frame data items; and providing the divided frame data items to the PDP. According to a first embodiment of the present invention, there is provided a method for driving a PDP including the steps of dividing two frame data items into three frame data items; and providing the divided frame data items to the PDP. The method and apparatus for driving a PDP according to the present invention can reduce large area flicker and dynamic false contour noise in a high-resolution PDP.
    Type: Application
    Filed: September 18, 2007
    Publication date: January 10, 2008
    Inventors: Byung Soo SONG, Chang Ho HYEON, Hwan Yu KIM, Geun Soo LIM