Patents by Inventor IK-HAN OH

IK-HAN OH 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: 10845714
    Abstract: An exposure method includes exposing a substrate to form a first pattern on a first layer, measuring a first alignment value of the first pattern, generating first correction data by using the first alignment value, storing the first correction data and exposing the substrate to form a second pattern on a second layer disposed on the first layer by using the first correction data.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: November 24, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ik-Han Oh, Seung-Kyu Lee, Hyeon-Min Cho
  • Patent number: 10429703
    Abstract: A liquid crystal display includes substrates facing each other, plural pixels, a liquid crystal layer between the substrates, and a pixel electrode in each pixel. The pixel electrode defines: a first stem extending in a first direction, a second stem extending in a second direction, first edge bars extending in the first direction and connected to the second stem, second edge bars extending in the second direction and connected to the first stem, and plural branches extending from the first or second stem and inclined with respect to the first or second directions and terminating spaced apart from the first and second edge bars. Distal ends of each of the first edge bars are spaced apart from distal ends of each of second edge bars, and in the second direction, each of the first edge bars overlaps lines along which the second edge bars respectively lengthwise extend.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: October 1, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Wan Namgung, Ik Han Oh, Seung Kyu Lee, Ho Jun Lee, Ki Pyo Hong
  • Patent number: 10401684
    Abstract: A liquid crystal display device includes first and second substrates facing each other and including pixels, a pixel electrode disposed on the first substrate to be provided in each of the pixels, and a common electrode disposed on the second substrate, where the pixel electrode includes first unit electrodes, each of the first unit electrodes includes four domains, which are arranged in two rows in a first direction and two columns in a second direction, the four domains include first, second, third, and fourth domains of a corresponding first unit electrode, each of the first unit electrodes further includes a first slit, which is an opening defined along boundaries between the first through fourth domains, and the common electrode includes second slits, which are openings defined along outer sides of each of the first unit electrodes.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: September 3, 2019
    Assignee: SAMSUNG DISPLAY CO. LTD.
    Inventors: Ik Han Oh, Wan Namgung, Seung Kyu Lee, Ho Jun Lee, Youn Hak Jeong
  • Publication number: 20180231848
    Abstract: A liquid crystal display includes substrates facing each other, plural pixels, a liquid crystal layer between the substrates, and a pixel electrode in each pixel. The pixel electrode defines: a first stem extending in a first direction, a second stem extending in a second direction, first edge bars extending in the first direction and connected to the second stem, second edge bars extending in the second direction and connected to the first stem, and plural branches extending from the first or second stem and inclined with respect to the first or second directions and terminating spaced apart from the first and second edge bars. Distal ends of each of the first edge bars are spaced apart from distal ends of each of second edge bars, and in the second direction, each of the first edge bars overlaps lines along which the second edge bars respectively lengthwise extend.
    Type: Application
    Filed: April 11, 2018
    Publication date: August 16, 2018
    Inventors: Wan NAMGUNG, Ik Han OH, Seung Kyu LEE, Ho Jun LEE, Ki Pyo HONG
  • Patent number: 10042215
    Abstract: A liquid crystal display includes a first panel including a first substrate, a first electrode which is disposed on the first substrate and which includes a stem unit including a horizontal stem and a vertical stem dividing a pixel into domains, a branch unit including branch electrodes and extending from at least one stem of the stem unit in one direction, and an external bundling electrode unit connected to an end of at least one of the branch electrodes and disposed along an edge of the pixel, a first slit pattern which is defined in the branch unit, a second slit pattern which contacts the vertical stem and is disposed parallel to the horizontal stem, a third slit pattern which contacts the horizontal stem and is disposed parallel to the vertical stem, and a protrusion unit which is disposed on an outer circumference of the external bundling electrode unit.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: August 7, 2018
    Assignee: SAMSUNG DISPLAY CO. LTD.
    Inventors: Se Hyun Lee, Ik Han Oh, Wan Namgung, Ho Jun Lee, Youn Hak Jeong, Ki Pyo Hong
  • Patent number: 10008168
    Abstract: A liquid crystal display includes a pixel electrode which includes a first subpixel electrode and a second subpixel electrode, a first insulating substrate and a second insulating substrate which faces the first insulating substrate, a common electrode which overlaps the pixel region, where the first subpixel electrode includes a first main unit electrode and a first sub unit electrode which is electrically connected to the first main unit electrode and smaller in area than the first main unit electrode, the second subpixel electrode includes a second main unit electrode, and a first opening part which overlaps the first main unit electrode, a second opening part which overlaps the second main unit electrode, and a third opening part which overlaps the first sub unit electrode and has a different shape from those of the first opening part and the second opening part are defined in the common electrode.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: June 26, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Wan Namgung, Ik Han Oh, Ho Jun Lee, Youn Hak Jeong, Seung Kyu Lee, Mi Hyeon Jo
  • Patent number: 9946124
    Abstract: A liquid crystal display includes substrates facing each other, plural pixels, a liquid crystal layer between the substrates, and a pixel electrode in each pixel. The pixel electrode defines: a first stem extending in a first direction, a second stem extending in a second direction, first edge bars extending in the first direction and connected to the second stem, second edge bars extending in the second direction and connected to the first stem, and plural branches extending from the first or second stem and inclined with respect to the first or second directions and terminating spaced apart from the first and second edge bars. Distal ends of each of the first edge bars are spaced apart from distal ends of each of second edge bars, and in the second direction, each of the first edge bars overlaps lines along which the second edge bars respectively lengthwise extend.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: April 17, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Wan Namgung, Ik Han Oh, Seung Kyu Lee, Ho Jun Lee, Ki Pyo Hong
  • Publication number: 20180067404
    Abstract: An exposure method includes exposing a substrate to form a first pattern on a first layer, measuring a first alignment value of the first pattern, generating first correction data by using the first alignment value, storing the first correction data and exposing the substrate to form a second pattern on a second layer disposed on the first layer by using the first correction data.
    Type: Application
    Filed: November 10, 2017
    Publication date: March 8, 2018
    Inventors: IK-HAN OH, SEUNG-KYU LEE, HYEON-MIN CHO
  • Patent number: 9904111
    Abstract: A liquid crystal display includes: a first panel including a first electrode; a second panel including a second electrode; and a liquid crystal layer between the first and second panels. The first electrode includes: a central electrode disposed in a central region of a pixel; an outer electrodes extending along a side of the central electrode; and a connection electrode which connects the outer electrode and the central electrode. A slit pattern is defined in the first electrode around the central electrode, and a liquid crystal control pattern is defined in the first electrode in a corner region of the pixel. Horizontal and vertical incisions, which divide the first electrode into a plurality of domains, are defined in the second electrode, an end portion of the outer electrode is disposed to correspond to the corner region, and the end portion of the outer electrode extends farther than the central electrode.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: February 27, 2018
    Assignee: SAMSUNG DISPLAY CO. LTD.
    Inventors: Se Hyun Lee, Ik Han Oh, Youn Hak Jeong, Ki Pyo Hong, Wan Namgung, Ho Jun Lee, Dong Chul Shin
  • Patent number: 9846337
    Abstract: A liquid crystal display includes a first panel including a first electrode which includes a central electrode disposed in a central region of a pixel, a micro-branch part extending in a direction from at least one side of the central electrode, a peripheral electrode connected to an end of part of the micro-branch part, and a corner pattern provided in a corner region of the pixel, a second panel including horizontal and vertical incision parts which divide the micro-branch part, the central electrode and the peripheral electrode of the first electrode into a plurality of domains and a second electrode which is divided corresponding to plurality of domain regions, and where in the first panel, the peripheral electrode adjacent to the corner pattern is disposed on at least one of an edge region of the pixel in a direction parallel to the horizontal or vertical incision part.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: December 19, 2017
    Assignee: SAMSUNG DISPLAY CO. LTD.
    Inventors: Ik Han Oh, Seong Young Lee, Se Hyun Lee, Hyung Jun Park, Youn Hak Jeong
  • Patent number: 9841686
    Abstract: An exposure method includes exposing a substrate to form a first pattern on a first layer, measuring a first alignment value of the first pattern, generating first correction data by using the first alignment value, storing the first correction data and exposing the substrate to form a second pattern on a second layer disposed on the first layer by using the first correction data.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: December 12, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ik-Han Oh, Seung-Kyu Lee, Hyeon-Min Cho
  • Publication number: 20170293190
    Abstract: A liquid-crystal display device is provided. The liquid-crystal display device comprises a first substrate, a thin-film transistor disposed on the first substrate, a color filter layer disposed on the thin-film transistor, a photosensitive layer disposed on the color filter layer, and a pixel electrode disposed on the photosensitive layer and connected to the thin-film transistor via a contact hole penetrating the photosensitive layer. The photosensitive layer comprises a first area overlapping the thin-film transistor, a second area overlapping the contact hole, and a third area that is the rest of the photosensitive layer except the first and second areas. The photosensitive layer has a first thickness in the first area, is opened in a center of the second area, and has a second thickness in the third area, wherein the second thickness is smaller than the first thickness.
    Type: Application
    Filed: March 15, 2017
    Publication date: October 12, 2017
    Inventors: Duk Sung KIM, Hyuk Jin KIM, Ik Han OH, Young Min JUNG
  • Patent number: 9658493
    Abstract: A liquid crystal display includes a first substrate, a first electrode which is disposed on the first substrate, and which includes a stem part for dividing a pixel into a plurality of domains, a plurality of micro branch parts extending in one direction from at least one stem of the stem part, and a peripheral bundle electrode connected to an end of at least one of the micro branch parts and disposed along an edge of the pixel, a first panel including protrusions arranged along an outer circumference of the peripheral bundle electrode and projected in the direction vertical to the first substrate, a second substrate, a second panel including a second electrode which is disposed on the second substrate and which faces the first electrode, and a liquid crystal layer which is interposed between the first panel and the second panel and which includes liquid crystals.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: May 23, 2017
    Assignee: SAMSUNG DISPLAY CO. LTD.
    Inventors: Ik Han Oh, Se Hyun Lee, Wan Namgung, Ho Jun Lee, Youn Hak Jeong, Ki Pyo Hong
  • Publication number: 20170090253
    Abstract: A liquid crystal display device includes first and second substrates facing each other and including pixels, a pixel electrode disposed on the first substrate to be provided in each of the pixels, and a common electrode disposed on the second substrate, where the pixel electrode includes first unit electrodes, each of the first unit electrodes includes four domains, which are arranged in two rows in a first direction and two columns in a second direction, the four domains include first, second, third, and fourth domains of a corresponding first unit electrode, each of the first unit electrodes further includes a first slit, which is an opening defined along boundaries between the first through fourth domains, and the common electrode includes second slits, which are openings defined along outer sides of each of the first unit electrodes.
    Type: Application
    Filed: April 25, 2016
    Publication date: March 30, 2017
    Inventors: Ik Han OH, Wan NAMGUNG, Seung Kyu LEE, Ho Jun LEE, Youn Hak JEONG
  • Publication number: 20170075175
    Abstract: A liquid crystal display includes substrates facing each other, plural pixels, a liquid crystal layer between the substrates, and a pixel electrode in each pixel. The pixel electrode defines: a first stem extending in a first direction, a second stem extending in a second direction, first edge bars extending in the first direction and connected to the second stem, second edge bars extending in the second direction and connected to the first stem, and plural branches extending from the first or second stem and inclined with respect to the first or second directions and terminating spaced apart from the first and second edge bars. Distal ends of each of the first edge bars are spaced apart from distal ends of each of second edge bars, and in the second direction, each of the first edge bars overlaps lines along which the second edge bars respectively lengthwise extend.
    Type: Application
    Filed: March 2, 2016
    Publication date: March 16, 2017
    Inventors: Wan NAMGUNG, Ik Han OH, Seung Kyu LEE, Ho Jun LEE, Ki Pyo HONG
  • Publication number: 20170059948
    Abstract: A liquid crystal display includes a pixel electrode which includes a first subpixel electrode and a second subpixel electrode, a first insulating substrate and a second insulating substrate which faces the first insulating substrate, a common electrode which overlaps the pixel region, where the first subpixel electrode includes a first main unit electrode and a first sub unit electrode which is electrically connected to the first main unit electrode and smaller in area than the first main unit electrode, the second subpixel electrode includes a second main unit electrode, and a first opening part which overlaps the first main unit electrode, a second opening part which overlaps the second main unit electrode, and a third opening part which overlaps the first sub unit electrode and has a different shape from those of the first opening part and the second opening part are defined in the common electrode.
    Type: Application
    Filed: April 13, 2016
    Publication date: March 2, 2017
    Inventors: Wan NAMGUNG, Ik Han OH, Ho Jun LEE, Youn Hak JEONG, Seung Kyu LEE, Mi Hyeon JO
  • Publication number: 20170003549
    Abstract: A liquid crystal display includes: a first panel including a first electrode; a second panel including a second electrode; and a liquid crystal layer between the first and second panels. The first electrode includes: a central electrode disposed in a central region of a pixel; an outer electrodes extending along a side of the central electrode; and a connection electrode which connects the outer electrode and the central electrode. A slit pattern is defined in the first electrode around the central electrode, and a liquid crystal control pattern is defined in the first electrode in a corner region of the pixel. Horizontal and vertical incisions, which divide the first electrode into a plurality of domains, are defined in the second electrode, an end portion of the outer electrode is disposed to correspond to the corner region, and the end portion of the outer electrode extends farther than the central electrode.
    Type: Application
    Filed: June 13, 2016
    Publication date: January 5, 2017
    Inventors: Se Hyun LEE, Ik Han OH, Youn Hak JEONG, Ki Pyo HONG, Wan NAMGUNG, Ho Jun LEE, Dong Chul SHIN
  • Publication number: 20160377922
    Abstract: A liquid crystal display includes a first substrate, a first electrode which is disposed on the first substrate, and which includes a stem part for dividing a pixel into a plurality of domains, a plurality of micro branch parts extending in one direction from at least one stem of the stem part, and a peripheral bundle electrode connected to an end of at least one of the micro branch parts and disposed along an edge of the pixel, a first panel including protrusions arranged along an outer circumference of the peripheral bundle electrode and projected in the direction vertical to the first substrate, a second substrate, a second panel including a second electrode which is disposed on the second substrate and which faces the first electrode, and a liquid crystal layer which is interposed between the first panel and the second panel and which includes liquid crystals.
    Type: Application
    Filed: December 4, 2015
    Publication date: December 29, 2016
    Inventors: Ik Han OH, Se Hyun LEE, Wan NAMGUNG, Ho Jun LEE, Youn Hak JEONG, Ki Pyo HONG
  • Publication number: 20160377933
    Abstract: A liquid crystal display includes a first panel including a first electrode which includes a central electrode disposed in a central region of a pixel, a micro-branch part extending in a direction from at least one side of the central electrode, a peripheral electrode connected to an end of part of the micro-branch part, and a corner pattern provided in a corner region of the pixel, a second panel including horizontal and vertical incision parts which divide the micro-branch part, the central electrode and the peripheral electrode of the first electrode into a plurality of domains and a second electrode which is divided corresponding to plurality of domain regions, and where in the first panel, the peripheral electrode adjacent to the corner pattern is disposed on at least one of an edge region of the pixel in a direction parallel to the horizontal or vertical incision part.
    Type: Application
    Filed: January 8, 2016
    Publication date: December 29, 2016
    Inventors: Ik Han Oh, Seong Young Lee, Se Hyun Lee, Hyung Jun Park, Youn Hak Jeong
  • Publication number: 20160377940
    Abstract: A liquid crystal display includes a first panel including a first substrate, a first electrode which is disposed on the first substrate and which includes a stem unit including a horizontal stem and a vertical stem dividing a pixel into domains, a branch unit including branch electrodes and extending from at least one stem of the stem unit in one direction, and an external bundling electrode unit connected to an end of at least one of the branch electrodes and disposed along an edge of the pixel, a first slit pattern which is defined in the branch unit, a second slit pattern which contacts the vertical stem and is disposed parallel to the horizontal stem, a third slit pattern which contacts the horizontal stem and is disposed parallel to the vertical stem, and a protrusion unit which is disposed on an outer circumference of the external bundling electrode unit.
    Type: Application
    Filed: May 26, 2016
    Publication date: December 29, 2016
    Inventors: Se Hyun LEE, Ik Han OH, Wan NAMGUNG, Ho Jun LEE, Youn Hak JEONG, Ki Pyo HONG