Patents by Inventor Kyung Hoon Chung

Kyung Hoon Chung 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: 12223888
    Abstract: A display device includes a light-emitting diode including a first conductivity-type semiconductor, an active layer, and a second conductivity-type semiconductor; a first voltage line to which a first voltage is applied; a second voltage line to which a second voltage is applied; a first transistor including a source electrode electrically connected to the first voltage line and a drain electrode electrically connected to a first electrode of the light-emitting diode and to the first conductivity-type semiconductor; a second transistor including a drain electrode electrically connected to a gate electrode of the first transistor and a source electrode electrically connected to a data line to apply a data signal; a capacitor electrically connected to the gate electrode of the first transistor and the first electrode; and a third transistor including a source electrode electrically connected to the second voltage line and a drain electrode electrically connected to the first electrode.
    Type: Grant
    Filed: November 13, 2023
    Date of Patent: February 11, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min Jae Jeong, Kyung Bae Kim, Chong Chul Chai, Kyung Hoon Chung
  • Patent number: 12198628
    Abstract: A light emitting display device includes: a light emitting element including an anode connected to a first line; a first transistor; a second transistor including a first electrode connected to a data line, and a second electrode connected to a gate electrode of the first transistor; a third transistor including a first electrode connected to the first line, and a second electrode connected to a first electrode of the first transistor; a fourth transistor including a second electrode connected to the gate electrode; a sixth transistor including a first electrode connected to a second electrode of the first transistor, and a second electrode connected to a second line; a first capacitor including a first electrode connected to the gate electrode and a second electrode connected to the second electrode of the first transistor; and a second capacitor including a second electrode connected to the second electrode of the first transistor.
    Type: Grant
    Filed: July 27, 2023
    Date of Patent: January 14, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyung Hoon Chung, Byung Chang Yu
  • Patent number: 12106715
    Abstract: A light-emitting display device includes a light-emitting element including an anode connected to a first driving voltage line, a first transistor including a gate electrode, a first electrode, and a second electrode, a second transistor including first and second electrodes respectively connected to a data line and the gate electrode, a third transistor including first and second electrodes respectively connected to the first driving voltage line and the first electrode of the first transistor, a fourth transistor including first and second electrodes respectively connected to a sensing line and the second electrode of the first transistor, a fifth transistor including first and second electrodes respectively connected to the second electrode of the first transistor, and a second driving voltage line, and a capacitor including first and second electrodes respectively connected to the gate electrode and the second electrode of the first transistor.
    Type: Grant
    Filed: July 27, 2023
    Date of Patent: October 1, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Kyung Hoon Chung
  • Publication number: 20240282262
    Abstract: A pixel circuit includes: a light emitting element having one end connected to a first power line supplying a first power voltage; a driving transistor for controlling an amount of current flowing to a second power voltage via the light emitting element electrically connected to a first electrode the driving transistor; an initialization transistor connected between a second electrode of the driving transistor and an initialization power line supplying an initialization voltage, the initialization transistor having a gate electrode connected to a first scan line; a compensation transistor connected between the first power line and the first electrode of the driving transistor, the compensation transistor having a gate electrode connected to a second scan line; and a storage capacitor connected between a gate electrode of the driving transistor and the second electrode of the driving transistor.
    Type: Application
    Filed: April 17, 2024
    Publication date: August 22, 2024
    Applicant: Samsung Display Co., Ltd.
    Inventor: Kyung Hoon CHUNG
  • Publication number: 20240258492
    Abstract: A display device comprises a substrate, a semiconductor layer thereon, a first insulating layer on the semiconductor layer, a first conductive layer on the first insulating layer and including a first electrode pattern, a second insulating layer on the first insulating layer and including first and second conductive patterns, a third insulating layer on the second conductive layer, and a display element layer on the third insulating layer and including a first pixel electrode connected to the first conductive pattern through a first via hole, a second pixel electrode connected to the second conductive pattern through a second via hole, and a micro light-emitting element between the pixel electrodes, the first conductive pattern contacting the semiconductor layer through a first contact hole and the first electrode pattern through a second contact hole, and the second conductive pattern overlapping the first electrode pattern to form a first capacitor therewith.
    Type: Application
    Filed: April 15, 2024
    Publication date: August 1, 2024
    Inventors: Kyung Bae KIM, Hyun Joon KIM, Kyung Hoon CHUNG, Mee Hye JUNG, Min Jae JEONG, Jun Ki JEONG
  • Publication number: 20240260441
    Abstract: A display apparatus includes a base substrate including a display region and a peripheral region that is a non-display region surrounding the display region, a plurality of data lines disposed in the display region on the base substrate and extending to the peripheral region, a bypass data line disposed in the display region and the peripheral region on the base substrate and electrically connected to at least one of the data lines, and a dummy pattern spaced apart from the bypass data line and disposed on a same layer as the bypass data line.
    Type: Application
    Filed: April 8, 2024
    Publication date: August 1, 2024
    Inventors: Min-Jae JEONG, Jae-Yong JANG, Gyung-Soon PARK, Kyung-Hoon CHUNG, Chong-Chul CHAI
  • Patent number: 12050305
    Abstract: A laser processing apparatus includes a laser source which generates a laser beam; a scanner unit disposed in an optical path of the laser beam from the laser source and which adjusts the optical path of the laser beam from the laser source in a first direction or in a second direction different from the first direction; and a reflector unit disposed in an optical path of the laser beam adjusted by the scanner unit and which reflects the laser beam adjusted by the scanner unit, where the reflector unit includes a first sub-reflector unit which shifts an optical path of the laser adjusted by the scanner unit in the first direction, and a second sub-reflector unit which shifts an optical path of the laser beam adjusted by the scanner unit in a third direction opposite to the first direction.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: July 30, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Emil Aslanov, Je Kil Ryu, Hae Sook Lee, Kyung Hoon Chung, Gyoo Wan Han
  • Patent number: 11967277
    Abstract: A pixel circuit includes: a light emitting element having one end connected to a first power line supplying a first power voltage; a driving transistor for controlling an amount of current flowing to a second power voltage via the light emitting element electrically connected to a first electrode the driving transistor; an initialization transistor connected between a second electrode of the driving transistor and an initialization power line supplying an initialization voltage, the initialization transistor having a gate electrode connected to a first scan line; a compensation transistor connected between the first power line and the first electrode of the driving transistor, the compensation transistor having a gate electrode connected to a second scan line; and a storage capacitor connected between a gate electrode of the driving transistor and the second electrode of the driving transistor.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: April 23, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Kyung Hoon Chung
  • Patent number: 11961950
    Abstract: A display device comprises a substrate, a semiconductor layer thereon, a first insulating layer on the semiconductor layer, a first conductive layer on the first insulating layer and including a first electrode pattern, a second insulating layer on the first insulating layer and including first and second conductive patterns, a third insulating layer on the second conductive layer, and a display element layer on the third insulating layer and including a first pixel electrode connected to the first conductive pattern through a first via hole, a second pixel electrode connected to the second conductive pattern through a second via hole, and a micro light-emitting element between the pixel electrodes, the first conductive pattern contacting the semiconductor layer through a first contact hole and the first electrode pattern through a second contact hole, and the second conductive pattern overlapping the first electrode pattern to form a first capacitor therewith.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: April 16, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyung Bae Kim, Hyun Joon Kim, Kyung Hoon Chung, Mee Hye Jung, Min Jae Jeong, Jun Ki Jeong
  • Patent number: 11961461
    Abstract: A pixel circuit includes: a first transistor including a gate electrode connected to a first node, a source electrode connected to a first power line, and a drain electrode connected to a second power line; a light emitting element connected between the first transistor and the first or second power line; a second transistor connected between a data line and the first node, and including a gate electrode connected to a first scan line; a first capacitor connected between the first node and the source electrode of the first transistor; a third transistor connected between the first node and the first power line, and including a gate electrode connected to a second node; a fourth transistor connected between the second node and the data line, and including a gate electrode connected to a second scan line; and a second capacitor connected between the second node and a first control line.
    Type: Grant
    Filed: January 23, 2023
    Date of Patent: April 16, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Joon Kim, Kyung Hoon Chung
  • Publication number: 20240120345
    Abstract: A display device comprises a display area comprising a plurality of pixels, and a data line and a gate line electrically connected to the plurality of pixels, a non-display area disposed adjacent to the display area, a plurality of pads disposed on a side of the non-display area, a gate control line electrically connected to at least one of the plurality of pads and that supplies a gate control signal, a driving voltage line electrically connected to at least one of the plurality of pads and that supplies a driving voltage, an antistatic circuit electrically connected to the gate control line, a scan driver that generates a gate signal based on a gate control signal received from the gate control line and that supplies the gate signal to the gate line, and a shielding layer integral to the driving voltage line to overlap the top of the antistatic circuit.
    Type: Application
    Filed: August 2, 2023
    Publication date: April 11, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Hae Min KIM, Young Wan SEO, Geun Ho LEE, Kyung Hoon CHUNG
  • Publication number: 20240119901
    Abstract: A pixel including: a light emitting element; a first transistor connected between a first power source and a second node; a first capacitor connected to a first node or a second node and a third node; a second transistor between the third node and a data line, the second transistor turned on by a first scan signal; a third transistor between the first and second nodes, the third transistor turned on by a second scan signal; a fifth transistor between the first power source and the first transistor, the fifth transistor turned on by a first emission control signal; a sixth transistor between the second node and the light emitting element, the sixth transistor turned on by a second emission control signal; and an eighth transistor between the second node and a second emission control line, the eighth transistor turned on by a fourth scan signal.
    Type: Application
    Filed: December 13, 2023
    Publication date: April 11, 2024
    Inventors: Min Jae JEONG, Jun Hyun PARK, Hyun Joon KIM, Kyung Hoon CHUNG, Jang Mi KANG, Hae Min KIM
  • Patent number: 11957034
    Abstract: A display apparatus includes a base substrate including a display region and a peripheral region that is a non-display region surrounding the display region, a plurality of data lines disposed in the display region on the base substrate and extending to the peripheral region, a bypass data line disposed in the display region and the peripheral region on the base substrate and electrically connected to at least one of the data lines, and a dummy pattern spaced apart from the bypass data line and disposed on a same layer as the bypass data line.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: April 9, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min-Jae Jeong, Jae-Yong Jang, Gyung-Soon Park, Kyung-Hoon Chung, Chong-Chul Chai
  • Publication number: 20240087507
    Abstract: A display device includes a light-emitting diode including a first conductivity-type semiconductor, an active layer, and a second conductivity-type semiconductor; a first voltage line to which a first voltage is applied; a second voltage line to which a second voltage is applied; a first transistor including a source electrode electrically connected to the first voltage line and a drain electrode electrically connected to a first electrode of the light-emitting diode and to the first conductivity-type semiconductor; a second transistor including a drain electrode electrically connected to a gate electrode of the first transistor and a source electrode electrically connected to a data line to apply a data signal; a capacitor electrically connected to the gate electrode of the first transistor and the first electrode; and a third transistor including a source electrode electrically connected to the second voltage line and a drain electrode electrically connected to the first electrode.
    Type: Application
    Filed: November 13, 2023
    Publication date: March 14, 2024
    Inventors: Min Jae JEONG, Kyung Bae KIM, Chong Chul CHAI, Kyung Hoon CHUNG
  • Publication number: 20240046870
    Abstract: A light emitting display device includes: a light emitting element including an anode connected to a first line; a first transistor; a second transistor including a first electrode connected to a data line, and a second electrode connected to a gate electrode of the first transistor; a third transistor including a first electrode connected to the first line, and a second electrode connected to a first electrode of the first transistor; a fourth transistor including a second electrode connected to the gate electrode; a sixth transistor including a first electrode connected to a second electrode of the first transistor, and a second electrode connected to a second line; a first capacitor including a first electrode connected to the gate electrode and a second electrode connected to the second electrode of the first transistor; and a second capacitor including a second electrode connected to the second electrode of the first transistor.
    Type: Application
    Filed: July 27, 2023
    Publication date: February 8, 2024
    Inventors: Kyung Hoon CHUNG, Byung Chang YU
  • Publication number: 20240046871
    Abstract: A light-emitting display device includes a light-emitting element including an anode connected to a first driving voltage line, a first transistor including a gate electrode, a first electrode, and a second electrode, a second transistor including first and second electrodes respectively connected to a data line and the gate electrode, a third transistor including first and second electrodes respectively connected to the first driving voltage line and the first electrode of the first transistor, a fourth transistor including first and second electrodes respectively connected to a sensing line and the second electrode of the first transistor, a fifth transistor including first and second electrodes respectively connected to the second electrode of the first transistor, and a second driving voltage line, and a capacitor including first and second electrodes respectively connected to the gate electrode and the second electrode of the first transistor.
    Type: Application
    Filed: July 27, 2023
    Publication date: February 8, 2024
    Inventor: Kyung Hoon CHUNG
  • Patent number: 11893926
    Abstract: Embodiments provide an emissive display device including a driving transistor including a first electrode, a second electrode, and a driving gate electrode, a second transistor including a first electrode electrically connected to a data line, a transfer capacitor including a first transfer electrode electrically connected to a second electrode of the second transistor and a second transfer electrode electrically connected to the driving gate electrode; a fifth transistor electrically connecting the first electrode of the driving transistor and the driving gate electrode; a ninth transistor including a second electrode electrically connected to the second electrode of the driving transistor; and a light emitting diode including an anode and a cathode receiving an output current outputted to the second electrode of the driving transistor.
    Type: Grant
    Filed: February 16, 2023
    Date of Patent: February 6, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byung Chang Yu, Hae Min Kim, Myunghoon Park, Dong-Hoon Lee, Kyung Hoon Chung
  • Patent number: 11875743
    Abstract: A pixel including: a light emitting element; a first transistor connected between a first power source and a second node; a first capacitor connected to a first node or a second node and a third node; a second transistor between the third node and a data line, the second transistor turned on by a first scan signal; a third transistor between the first and second nodes, the third transistor turned on by a second scan signal; a fifth transistor between the first power source and the first transistor, the fifth transistor turned on by a first emission control signal; a sixth transistor between the second node and the light emitting element, the sixth transistor turned on by a second emission control signal; and an eighth transistor between the second node and a second emission control line, the eighth transistor turned on by a fourth scan signal.
    Type: Grant
    Filed: July 28, 2022
    Date of Patent: January 16, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Min Jae Jeong, Jun Hyun Park, Hyun Joon Kim, Kyung Hoon Chung, Jang Mi Kang, Hae Min Kim
  • Patent number: 11869415
    Abstract: A sweep signal driver includes: a kth stage to output a kth emission signal to a kth emission line, and a kth sweep signal to a kth sweep signal line, the kth stage including: first, second, and third pull-up nodes; a node connection circuit between the first pull-up node and the second pull-up node, and between the first pull-up node and the third pull-up node; a first output circuit to output a sweep clock signal of a sweep clock terminal to a first output terminal connected to the kth sweep signal line when the third pull-up node has a gate-on voltage; and a second output circuit to output a gate-on voltage to a second output terminal connected to the kth emission line when the second pull-up node has a gate-on voltage. A pulse of the kth sweep signal linearly changes from a gate-off voltage to the gate-on voltage.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: January 9, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Joon Kim, Jung Hwan Hwang, Kyung Hoon Chung, Jun Ki Jeong
  • Patent number: 11862500
    Abstract: An apparatus for manufacturing a display device includes: a first housing having a first chamber; a support member disposed in the first chamber and including a frame having a plurality of openings; a plurality of adhesive patterns disposed on the frame; and a plurality of electrostatic supports overlapping the plurality of openings and supported for reciprocal movement in respective ones of the openings.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: January 2, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Won Shim, Yoon Jae Lee, Sung Lae Kim, Kang Won Lee, Kyung Hoon Chung