Patents by Inventor Youn Hak Jeong

Youn Hak Jeong 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: 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: 9997541
    Abstract: A liquid crystal display includes: first and second thin film transistors and a compensation transistor formed on a first insulation substrate; a first gray subpixel electrode connected to a drain electrode of the first thin film transistor; a second gray subpixel electrode connected to a drain electrode of the compensation transistor and a drain electrode of the second thin film transistor; and first and second reference voltage lines overlapping at least one of the second gray subpixel electrode and the first gray subpixel electrode, wherein a pixel area occupied by the first gray subpixel electrode and the second gray subpixel electrode is extended in a first direction, the first and second reference voltage lines are extended in a second direction, which is substantially perpendicular to the first direction, to overlap the pixel area, and one of the first and second reference voltage lines is connected to a source electrode of the compensation transistor.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: June 12, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Youn Hak Jeong, Bo Yeong Kim, Jang Soo Kim, Hong Min Yoon, Seong Young Lee, Ho Jun Lee
  • 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: 9772534
    Abstract: A liquid crystal display is provided. The display includes: gate lines applied with a gate signal; data lines applied with a data signal; reference voltage lines respectively applied with first and second reference voltage having different polarities; first, second, and third subpixel electrodes included in one pixel area; a first switching element connected to the first gate line, the first data line, and the first subpixel electrode; a second switching element connected to the first gate line, the first data line, and the second subpixel electrode; a third switching element connected to the first or second gate line, the first or second data line, and the third subpixel electrode; a fourth switching element connected to the first gate line, the first reference voltage line, and the first subpixel electrode; and a fifth switching element connected to the first gate line, the second reference voltage line, and the second subpixel electrode.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: September 26, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youn Hak Jeong, Hong Min Yoon, Ho Jun Lee, Seung-Kyu Lee
  • Publication number: 20170148398
    Abstract: A display device includes a gate line and a data line crossing the gate line. The display device further includes a first switching element and a second switching element each connected to the gate line and the data line. The display device further includes a first sub-pixel electrode and a second sub-pixel electrode connected to the first switching element and the second switching element, respectively. The display device further includes a reference voltage line for transmitting a reference voltage, a first portion of the first reference voltage line overlapping a first edge of the first sub-pixel electrode, a second portion of the first reference voltage line overlapping a second edge of the first sub-pixel electrode opposite the first edge of the first sub-pixel electrode. The display device further includes a third switching element connected to the gate line, the first sub-pixel electrode, and the reference voltage line.
    Type: Application
    Filed: February 3, 2017
    Publication date: May 25, 2017
    Inventors: Youn Hak JEONG, Shi Yul KIM, Bum Ki BAEK, Dong Hee SHIN, Ho Jun LEE, Kyong Sik CHOI
  • 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
  • Patent number: 9625780
    Abstract: A liquid crystal display according to an exemplary embodiment of the present invention includes: a first substrate, a plurality of signal lines positioned on the first substrate, a pixel electrode connected to the signal lines, and a contact hole exposing a portion of the signal line, wherein the pixel electrode includes a cross-shaped stem, a plurality of branch electrodes extending from the cross-shaped stem, and an edge stem connecting the plurality of branch electrodes at an edge of the pixel electrode, and the edge stem of the pixel electrode adjacent to the contact hole being removed.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: April 18, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kang-Young Lee, Hong Min Yoon, Ho Jun Lee, Youn Hak Jeong, Seung Ki Song, Doo Hwan You, Sung-Jin Lee, Kyung-Suk Jung
  • Patent number: 9625777
    Abstract: A liquid crystal display includes a substrate, a gate line, a data line, first and second reference voltage lines disposed on the substrate, first and second subpixel electrodes disposed in one pixel area, and first to third switching elements. The first and second reference voltage lines apply first and second reference voltages. The first and second subpixel electrodes include a plate portion and a plurality of branch portions extending from the plate portion. The first and second reference voltage lines include a first portion overlapping the first subpixel electrode and the second subpixel electrode. The first portion overlaps the plate portion of the first and second subpixel electrodes. A voltage difference between the first subpixel electrode and a common voltage is larger than a voltage difference between the second subpixel electrode and the common voltage.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: April 18, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Hee Shin, Youn Hak Jeong, Ho Jun Lee, Yoo Mi Ra, Kee-Bum Park, Hong Min Yoon
  • Publication number: 20170090263
    Abstract: A liquid crystal display is provided. The display includes: gate lines applied with a gate signal; data lines applied with a data signal; reference voltage lines respectively applied with first and second reference voltage having different polarities; first, second, and third subpixel electrodes included in one pixel area; a first switching element connected to the first gate line, the first data line, and the first subpixel electrode; a second switching element connected to the first gate line, the first data line, and the second subpixel electrode; a third switching element connected to the first or second gate line, the first or second data line, and the third subpixel electrode; a fourth switching element connected to the first gate line, the first reference voltage line, and the first subpixel electrode; and a fifth switching element connected to the first gate line, the second reference voltage line, and the second subpixel electrode.
    Type: Application
    Filed: December 8, 2016
    Publication date: March 30, 2017
    Inventors: Youn Hak JEONG, Hong Min YOON, Ho Jun LEE, Seung-Kyu LEE
  • 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: 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
  • Patent number: 9568792
    Abstract: A display device includes a gate line and a data line crossing the gate line. The display device further includes a first switching element and a second switching element each connected to the gate line and the data line. The display device further includes a first sub-pixel electrode and a second sub-pixel electrode connected to the first switching element and the second switching element, respectively. The display device further includes a reference voltage line for transmitting a reference voltage, a first portion of the first reference voltage line overlapping a first edge of the first sub-pixel electrode, a second portion of the first reference voltage line overlapping a second edge of the first sub-pixel electrode opposite the first edge of the first sub-pixel electrode. The display device further includes a third switching element connected to the gate line, the first sub-pixel electrode, and the reference voltage line.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: February 14, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youn Hak Jeong, Shi Yul Kim, Bum Ki Baek, Dong Hee Shin, Ho Jun Lee, Kyong Sik Choi
  • Patent number: 9570023
    Abstract: A display panel including a plurality of pixels. A first pixel among the plurality of pixels includes a first subpixel, which further includes a first subpixel electrode, a first switching element configured to apply a data voltage to the first subpixel electrode, and a second switching element applying a boosting voltage to the first subpixel electrode. The first pixel further includes a second subpixel including a second subpixel electrode and a third switching element applying the data voltage to the low pixel electrode. Accordingly, display quality and reliability of the display panel may be improved.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: February 14, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youn-Hak Jeong, Gak-Seok Lee
  • Patent number: 9547211
    Abstract: A liquid crystal display is provided. The display includes: gate lines applied with a gate signal; data lines applied with a data signal; reference voltage lines respectively applied with first and second reference voltage having different polarities; first, second, and third subpixel electrodes included in one pixel area; a first switching element connected to the first gate line, the first data line, and the first subpixel electrode; a second switching element connected to the first gate line, the first data line, and the second subpixel electrode; a third switching element connected to the first or second gate line, the first or second data line, and the third subpixel electrode; a fourth switching element connected to the first gate line, the first reference voltage line, and the first subpixel electrode; and a fifth switching element connected to the first gate line, the second reference voltage line, and the second subpixel electrode.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: January 17, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youn Hak Jeong, Hong Min Yoon, Ho Jun Lee, Seung-Kyu Lee
  • 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: 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
  • 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