Patents by Inventor Dongjoong CHA

Dongjoong 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).

  • Publication number: 20240231540
    Abstract: A display apparatus can include a panel which includes a plurality of sub pixels and a plurality of touch electrodes, a first driving circuit which supplies a driving signal to the panel in a driving period and holds the driving signal in the stand-by period, and a second driving circuit which supplies a mutual sensing signal to the panel and supplies a self-sensing signal to the panel in the stand-by period.
    Type: Application
    Filed: October 18, 2023
    Publication date: July 11, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: DongHoon LEE, TaeHoon KIM, Jinwook CHOI, Dongjoong CHA
  • Patent number: 11983368
    Abstract: A display panel and a touch display device are disclosed. The display panel includes a first touch electrode positioned in the first area, a second touch electrode positioned in the second area, a third touch electrode positioned in the third area, a fourth touch electrode positioned in the fourth area, and a first connection pattern electrically connecting the first touch electrode and the second touch electrode. A connection portion between the third touch electrode and the fourth touch electrode may pass through an intermediate area between the first area and the second area. The first connection pattern may pass through the intermediate area between the first area and the second area and may cross the connection portion between the third and fourth touch electrodes. Each of the first, second, third and fourth touch electrodes may include a first metal layer and a second metal layer, the first metal layer and the second metal layer may be separated by a touch-interlayer insulating layer.
    Type: Grant
    Filed: December 27, 2022
    Date of Patent: May 14, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Dongjoong Cha, MinSeob Song, TaeYeon Yoo, Wonchang Do
  • Publication number: 20240134482
    Abstract: A display apparatus can include a panel which includes a plurality of sub pixels and a plurality of touch electrodes, a first driving circuit which supplies a driving signal to the panel in a driving period and holds the driving signal in the stand-by period, and a second driving circuit which supplies a mutual sensing signal to the panel and supplies a self-sensing signal to the panel in the stand-by period.
    Type: Application
    Filed: October 17, 2023
    Publication date: April 25, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: DongHoon LEE, TaeHoon KIM, Jinwook CHOI, Dongjoong CHA
  • Publication number: 20230205375
    Abstract: A display panel and a touch display device are disclosed. The display panel includes a first touch electrode positioned in the first area, a second touch electrode positioned in the second area, a third touch electrode positioned in the third area, a fourth touch electrode positioned in the fourth area, and a first connection pattern electrically connecting the first touch electrode and the second touch electrode. A connection portion between the third touch electrode and the fourth touch electrode may pass through an intermediate area between the first area and the second area. The first connection pattern may pass through the intermediate area between the first area and the second area and may cross the connection portion between the third and fourth touch electrodes. Each of the first, second, third and fourth touch electrodes may include a first metal layer and a second metal layer, the first metal layer and the second metal layer may be separated by a touch-interlayer insulating layer.
    Type: Application
    Filed: December 27, 2022
    Publication date: June 29, 2023
    Inventors: Dongjoong Cha, MinSeob Song, TaeYeon Yoo, Wonchang Do
  • Patent number: 10175810
    Abstract: A touchscreen panel includes touch sensors on a base film and routing wires connected to the touch sensors, wherein the base film has a main area and a tail area protruding from the main area, the main area includes an active region where the touch sensors are placed and a bezel region located on the outside of the active region, and the routing wires pass through the bezel region and the active region, and connect terminals provided at one end of the tail area and the touch sensors.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: January 8, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Sunggon Hong, Jaedo Lee, Namseok Lee, Dongjoong Cha
  • Patent number: 9921701
    Abstract: A touchscreen panel includes first and second electrode lines that cross each other with one of the first and second electrode lines being separated from the intersection of the first and second electrode lines, and the separated electrode line being connected to a bridge pattern via lower contact holes penetrating a first insulating film. The touchscreen panel includes a second insulating film covering the first insulating film; and a conductor rod pattern that is electrically connected to the separated electrode line via an upper contact hole penetrating the second insulating film and that overlaps the bridge pattern.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: March 20, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Namseok Lee, Junghwan Lee, Sunggon Hong, Dongjoong Cha
  • Publication number: 20170031501
    Abstract: A touchscreen panel includes first and second electrode lines that cross each other with one of the first and second electrode lines being separated from the intersection of the first and second electrode lines, and the separated electrode line being connected to a bridge pattern via lower contact holes penetrating a first insulating film. The touchscreen panel includes a second insulating film covering the first insulating film; and a conductor rod pattern that is electrically connected to the separated electrode line via an upper contact hole penetrating the second insulating film and that overlaps the bridge pattern.
    Type: Application
    Filed: July 29, 2016
    Publication date: February 2, 2017
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Namseok LEE, Junghwan LEE, Sunggon HONG, Dongjoong CHA
  • Publication number: 20170031522
    Abstract: A touchscreen panel includes touch sensors on a base film and routing wires connected to the touch sensors, wherein the base film has a main area and a tail area protruding from the main area, the main area includes an active region where the touch sensors are placed and a bezel region located on the outside of the active region, and the routing wires pass through the bezel region and the active region, and connect terminals provided at one end of the tail area and the touch sensors.
    Type: Application
    Filed: July 29, 2016
    Publication date: February 2, 2017
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Sunggon HONG, Jaedo LEE, Namseok LEE, Dongjoong CHA