Patents by Inventor Dong Hoon Cha

Dong Hoon Cha 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: 8988385
    Abstract: Disclosed are a touch panel driving apparatus and a display device including the same, which lead to the enhancement of sensing sensitivity. The touch panel driving apparatus includes a touch control unit and a touch sensing unit. The touch sensing unit is connected to the receiving lines, and generates the digital touch information on the basis of change of a capacitance between two transmitting lines and one receiving line or generates the digital touch information on the basis of change of a capacitance of each of the receiving lines to supply the digital touch information to the touch control unit, according to the sensing control signal.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: March 24, 2015
    Assignees: LG Display Co., Ltd., Industry-University Cooperation Foundation Hanyang University
    Inventors: Seong Mo Seo, Dong Hoon Cha, Oh Kyong Kwon, Ik Seok Yang
  • Patent number: 8823689
    Abstract: Disclosed is a display device which facilitates to prevent an abnormal display during a driving mode conversion, an abnormal signal input, and a no-signal input, and a method for driving the same, wherein the display device comprises a video controller for detecting an abnormal signal input and no-signal input by monitoring video data and control signals inputted from the external; and generating video data and control signals according to the abnormal signal input and no-signal input so as to enable a normal end of a frame; a timing controller for arranging and outputting the video data, supplied from the video controller, for every frame unit; and generating and outputting control signals for controlling a gate driver and a data driver by the use of timing synchronous signals; and a display panel for displaying image by the use of input video data.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: September 2, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Su Hyuk Jang, Dong Hoon Cha
  • Publication number: 20130038570
    Abstract: Disclosed are a touch panel driving apparatus and a display device including the same, which lead to the enhancement of sensing sensitivity. The touch panel driving apparatus includes a touch control unit and a touch sensing unit. The touch sensing unit is connected to the receiving lines, and generates the digital touch information on the basis of change of a capacitance between two transmitting lines and one receiving line or generates the digital touch information on the basis of change of a capacitance of each of the receiving lines to supply the digital touch information to the touch control unit, according to the sensing control signal.
    Type: Application
    Filed: December 29, 2011
    Publication date: February 14, 2013
    Inventors: Seong Mo SEO, Dong Hoon CHA, Oh Kyong KWON, Ik Seok YANG
  • Patent number: 8354988
    Abstract: The liquid crystal display device includes a liquid crystal display panel including first sub-pixels for charging a data of a polarity opposite to a prior horizontal period, and second sub-pixels for charging a data of a polarity identical to a prior horizontal period; a data driver for driving a plurality of data lines of the liquid crystal display panel; and a timing controller for dividing a charging period of the data into a plurality of charging periods, generating at least one compensation data for compensating a data on at least one of the plurality of charging periods, and supplying the at least one compensation data to the data driver.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: January 15, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Jin Sung Kim, Dong Hoon Cha, Ha Young Ji, Min Ki Kim
  • Patent number: 8289258
    Abstract: A disclosed display includes a display panel including a first group of data lines and second group of data lines, a plurality of gate lines crossing the first and a second groups of data lines, and a plurality of picture cells arranged in a matrix. The display also includes a first source PCB coupled to first data integrated circuits (ICs) to supply first data voltages to the first group of data lines and a second source PCB coupled to second data ICs to supply second data voltages to the second group of data lines. The display further includes a timing controller having a single output port with a plurality of output pins which are configured to output video data to both the first and second data ICs, and to output a timing control signal to control both the first and second data ICs.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: October 16, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Hong Sung Song, Woong Ki Min, Byung Jin Choi, Dong Hoon Cha, Su Hyuk Jang
  • Publication number: 20120147195
    Abstract: Disclosed is a display device which facilitates to prevent an abnormal display during a driving mode conversion, an abnormal signal input, and a no-signal input, and a method for driving the same, wherein the display device comprises a video controller for detecting an abnormal signal input and no-signal input by monitoring video data and control signals inputted from the external; and generating video data and control signals according to the abnormal signal input and no-signal input so as to enable a normal end of a frame; a timing controller for arranging and outputting the video data, supplied from the video controller, for every frame unit; and generating and outputting control signals for controlling a gate driver and a data driver by the use of timing synchronous signals; and a display panel for displaying image by the use of input video data.
    Type: Application
    Filed: December 7, 2011
    Publication date: June 14, 2012
    Inventors: Su Hyuk JANG, Dong Hoon Cha
  • Patent number: 8111229
    Abstract: A liquid crystal display device includes a liquid crystal display panel including a plurality of data lines, a plurality of gate lines, and a plurality of liquid crystal cells, the plurality of liquid crystal cells associated to a first and second liquid crystal cell groups, a data drive circuit to supply a data voltage to the data lines in response to a polarity control signal, a gate drive circuit to supply a scan pulse to the gate lines, and a polarity control circuit to generate different polarity control signals for each frame period and to control data voltage frequencies of the first and second liquid crystal cell groups to be different from each other.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: February 7, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Hong Sung Song, Ju Young Lee, Woong Ki Min, Dong Hoon Cha, Sun Young Choi, Su Hyuk Jang
  • Publication number: 20100053059
    Abstract: The present invention relates to a liquid crystal display device and a method for driving the same, in which a difference of data charge quantities is compensated in a liquid crystal display panel having a reduced number of data lines, for reducing power consumption. The liquid crystal display device includes a liquid crystal display panel including first sub-pixels for charging a data of a polarity opposite to a prior horizontal period, and second sub-pixels for charging a data of a polarity identical to a prior horizontal period; a data driver for driving a plurality of data lines of the liquid crystal display panel; and a timing controller for dividing a charging period of the data into a plurality of charging periods, generating at least one compensation data for compensating a data on at least one of the plurality of charging periods, and supplying the at least one compensation data to the data driver.
    Type: Application
    Filed: December 17, 2008
    Publication date: March 4, 2010
    Inventors: Jin Sung Kim, Dong Hoon Cha, Ha Young Ji, Min Ki Kim
  • Publication number: 20080225036
    Abstract: A disclosed display includes a display panel including a first group of data lines and second group of data lines, a plurality of gate lines crossing the first and a second groups of data lines, and a plurality of picture cells arranged in a matrix. The display also includes a first source PCB coupled to first data integrated circuits (ICs) to supply first data voltages to the first group of data lines and a second source PCB coupled to second data ICs to supply second data voltages to the second group of data lines. The display further includes a timing controller having a single output port with a plurality of output pins which are configured to output video data to both the first and second data ICs, and to output a timing control signal to control both the first and second data ICs.
    Type: Application
    Filed: December 28, 2007
    Publication date: September 18, 2008
    Inventors: Hong Sung Song, Woong Ki Min, Byung Jin Choi, Dong Hoon Cha, Su Hyuk Jang
  • Publication number: 20080170025
    Abstract: A liquid crystal display device includes a liquid crystal display panel including a plurality of data lines, a plurality of gate lines, and a plurality of liquid crystal cells, the plurality of liquid crystal cells associated to a first and second liquid crystal cell groups, a data drive circuit to supply a data voltage to the data lines in response to a polarity control signal, a gate drive circuit to supply a scan pulse to the gate lines, and a polarity control circuit to generate different polarity control signals for each frame period and to control data voltage frequencies of the first and second liquid crystal cell groups to be different from each other.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 17, 2008
    Inventors: Hong Sung Song, Ju Young Lee, Woong Ki Min, Dong Hoon Cha, Sun Young Choi, Su Hyuk Jang