Patents by Inventor Geunwoo Koh

Geunwoo Koh 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: 10658451
    Abstract: A film element for driving a display device and a display device using the same are disclosed. The film element includes a film substrate including wirings and pads connected to the wirings, and an IC chip mounted on the film substrate to be connected to the wirings. The pads on the film substrate are grouped into a plurality of areas having different thermal correction amounts. Pads in a second area are closer to the IC chip than pads in a first area. A length of the first area is set to a length obtained by subtracting a first thermal correction amount from a first reference length. A length of the second area is set to a length obtained by subtracting a second thermal correction amount from a second reference length. The second thermal correction amount is smaller than the first thermal correction amount or has a negative value.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: May 19, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Geunwoo Koh, Minsik Son
  • Publication number: 20190181212
    Abstract: A film element for driving a display device and a display device using the same are disclosed. The film element includes a film substrate including wirings and pads connected to the wirings, and an IC chip mounted on the film substrate to be connected to the wirings. The pads on the film substrate are grouped into a plurality of areas having different thermal correction amounts. Pads in a second area are closer to the IC chip than pads in a first area. A length of the first area is set to a length obtained by subtracting a first thermal correction amount from a first reference length. A length of the second area is set to a length obtained by subtracting a second thermal correction amount from a second reference length. The second thermal correction amount is smaller than the first thermal correction amount or has a negative value.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 13, 2019
    Inventors: Geunwoo KOH, Minsik SON
  • Patent number: 7948465
    Abstract: A liquid crystal display and a method of driving the same are disclosed. The liquid crystal display includes a timing controller, N source drive integrated circuits (ICs), where N is an integer equal to or greater than 2, N pairs of data bus lines, each of which connects the timing controller to each of the N source drive ICs in a point-to-point manner, a lock check line that connects a first source drive IC of the N source drive ICs to the timing controller and cascade-connects the N source drive ICs to one another, and a feedback lock check line connecting a last source drive IC of the N source drive ICs to the timing controller. A swing width of an output voltage of the timing controller increases in proportion to a distance between the timing controller and the N source drive ICs.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: May 24, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Soondong Cho, Pilsung Kang, Mangyu Park, Jeongho Kang, Yangseok Jeong, Geunwoo Koh, Changhun Cho, Hyunchul Kim
  • Patent number: 7898518
    Abstract: A liquid crystal display and a method of driving the same are disclosed. The liquid crystal display includes a timing controller, N source drive integrated circuits (ICs), where N is an integer equal to or greater than 2, N pairs of data bus lines, each of which connects the timing controller to each of the N source drive ICs in a point-to-point manner, a lock check line that connects a first source drive IC of the N source drive ICs to the timing controller and cascade-connects the N source drive ICs to one another, and a feedback lock check line that connects a last source drive IC of the N source drive ICs to the timing controller.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: March 1, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Jincheol Hong, Pilsung Kang, Mangyu Park, Geunwoo Koh
  • Publication number: 20100156885
    Abstract: A liquid crystal display and a method of driving the same are disclosed. The liquid crystal display includes a timing controller, N source drive integrated circuits (ICs), where N is an integer equal to or greater than 2, N pairs of data bus lines, each of which connects the timing controller to each of the N source drive ICs in a point-to-point manner, a lock check line that connects a first source drive IC of the N source drive ICs to the timing controller and cascade-connects the N source drive ICs to one another, and a feedback lock check line connecting a last source drive IC of the N source drive ICs to the timing controller. A swing width of an output voltage of the timing controller increases in proportion to a distance between the timing controller and the N source drive ICs.
    Type: Application
    Filed: August 7, 2009
    Publication date: June 24, 2010
    Inventors: Soondong CHO, Pilsung Kang, Mangyu Park, Jeongho Kang, Yangseok Jeong, Geunwoo Koh, Changhun Cho, Hyunchul Kim
  • Publication number: 20100149082
    Abstract: A liquid crystal display and a method of driving the same are disclosed. The liquid crystal display includes a timing controller, N source drive integrated circuits (ICs), where N is an integer equal to or greater than 2, N pairs of data bus lines, each of which connects the timing controller to each of the N source drive ICs in a point-to-point manner, a lock check line that connects a first source drive IC of the N source drive ICs to the timing controller and cascade-connects the N source drive ICs to one another, and a feedback lock check line that connects a last source drive IC of the N source drive ICs to the timing controller.
    Type: Application
    Filed: August 19, 2009
    Publication date: June 17, 2010
    Inventors: Jincheol Hong, Pilsung Kang, Mangyu Park, Geunwoo Koh