Patents by Inventor Seung Cheol O

Seung Cheol O 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: 8416175
    Abstract: The liquid crystal display device includes a liquid crystal panel including a common voltage correction unit that obtains predominant-polarity data based on polarities of image data to be supplied to pixel cells arranged in an nth one of pixel rows, obtains predominant-polarity data based on polarities of image data to be supplied to pixel cells arranged in an (n+1)th one of the pixel rows adjacent to the nth pixel row, obtains a sum of the two predominant-polarity data, and selects and outputting any one of a plurality of predetermined correction values based on the sum, and a common voltage output unit that corrects a common voltage based on the correction value from the common voltage correction unit and supplies the corrected common voltage to a common electrode.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: April 9, 2013
    Assignee: LG Display Co. Ltd.
    Inventors: Jin Cheol Hong, Seung Cheol O, Jong Woo Kim
  • Patent number: 8031153
    Abstract: A liquid crystal display for changing a supply sequence of a scanning pulse with which a plurality of gate lines are supplied to realize a one dot inversion, and a driving method thereof are disclosed. In the liquid crystal display, a liquid crystal display panel has a plurality of data lines and a plurality of gate lines, which are crossed each other, and pixels, which are defined by the lines. A gate driver supplies scanning pulses to the gate lines, and changes a supply sequence of the scanning pulses for each frame. A data driver converts digital video data into data voltages and periodically inverts a polarity of the data voltages to supply the data voltages in accordance with a supply sequence of the scanning pulses.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: October 4, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Sin Ho Kang, Jin Cheol Hong, Tae Hun Kim, Man Gyu Park, Seung Cheol O, Su Hyuk Jang
  • Patent number: 7924258
    Abstract: A gate driving apparatus and image display device using the same and driving method thereof comprises a start pulse generator which generates a second gate start pulse by a logic operation of a first gate start pulse and a gate output enable signal, a shift register which generates a shift signal by sequentially shifting the second gate start pulse in accordance with a gate shift clock, and an output unit which outputs the shift signal in accordance with the gate output enable signal.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: April 12, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Seung Cheol O, Soon Dong Cho
  • Publication number: 20080309590
    Abstract: Disclosed herein are a liquid crystal display device which is capable of maintaining the level of a common voltage applied to a common electrode constant, and a method for driving the same.
    Type: Application
    Filed: June 12, 2008
    Publication date: December 18, 2008
    Inventors: Jin Cheol Hong, Seung Cheol O, Jong Woo Kim
  • Publication number: 20080129904
    Abstract: A liquid crystal display for changing a supply sequence of a scanning pulse with which a plurality of gate lines are supplied to realize a one dot inversion, and a driving method thereof are disclosed. In the liquid crystal display, a liquid crystal display panel has a plurality of data lines and a plurality of gate lines, which are crossed each other, and pixels, which are defined by the lines. A gate driver supplies scanning pulses to the gate lines, and changes a supply sequence of the scanning pulses for each frame. A data driver converts digital video data into data voltages and periodically inverts a polarity of the data voltages to supply the data voltages in accordance with a supply sequence of the scanning pulses.
    Type: Application
    Filed: August 27, 2007
    Publication date: June 5, 2008
    Inventors: Sin Ho Kang, Jin Cheol Hong, Tae Hun Kim, Man Gyu Park, Seung Cheol O, Su Hyuk Jang