Patents by Inventor Hyun-Min Cho

Hyun-Min Cho 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: 20210376023
    Abstract: A manufacturing method of a display device includes: forming a transistor on a substrate; forming an organic insulating layer on the transistor; and performing a plasma treatment on the organic insulating layer. The organic insulating layer includes an acryl-based polymer, and the plasma treatment is performed by using helium gas or argon gas.
    Type: Application
    Filed: March 25, 2021
    Publication date: December 2, 2021
    Inventors: Hyun Min CHO, Tae Sung KIM, Yun Jong YEO, Ji Youn NAM, Hee Min YOO
  • Publication number: 20210375194
    Abstract: A pixel includes first and second sub-emission areas enclosed by a bank; a first light source unit disposed in the first sub-emission area, and including at least one first light emitting element connected between at least one first split electrode and a second power supply; a second light source unit disposed in the second sub-emission area, and including at least one second light emitting element connected between at least one second split electrode and the second power supply; a first driving circuit connected between a first power supply and the at least one first split electrode, and supplying a first driving current to the first light source unit in response to a first data signal; and a second driving circuit connected between the first power supply and the second split electrode, and supplying a second driving current to the second light source unit in response to a second data signal.
    Type: Application
    Filed: April 11, 2019
    Publication date: December 2, 2021
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin Oh KWAG, Won Sik OH, Keun Kyu SONG, Sung-Chan JO, Hyun Min CHO
  • Publication number: 20210376243
    Abstract: A method of manufacturing an organic light-emitting display device is provided. The method includes: forming a lower electrode pattern on a substrate, which includes a transistor area and a capacitor area, to correspond to the transistor area and forming a buffer layer on the substrate including the lower electrode pattern; forming a thin-film transistor including an oxide semiconductor layer on the buffer layer; forming an interlayer insulating film on the thin-film transistor; forming a photoresist film pattern including first and second holes, which have different depths, on the interlayer insulating film; and forming a first contact hole, which exposes the lower electrode pattern, and second contact holes, which expose the oxide semiconductor layer, at the same time using the photoresist film pattern.
    Type: Application
    Filed: December 21, 2018
    Publication date: December 2, 2021
    Inventors: Hyun Min CHO, Shin Il CHOI, Sang Gab KIM, Tae Sung KIM
  • Patent number: 11189681
    Abstract: An OLED display according to an exemplary embodiment includes: a substrate; a gate insulation layer that is disposed on the substrate; and a gate wire that is disposed on the gate insulation layer, and includes a gate electrode, wherein the gate wire includes a single layer of aluminum or an aluminum alloy, and an angle formed by side surfaces of the gate wire and the gate insulation layer is less than 65°.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: November 30, 2021
    Inventors: Kyeong Su Ko, Joon Geol Lee, Shin Il Choi, Sang Gab Kim, Hyun Min Cho, Hyun Eok Shin
  • Publication number: 20210366978
    Abstract: A light-emitting device includes: a substrate; a unit light-emitting area disposed on the substrate; first and second electrodes disposed in the unit light-emitting area to be separated from each other; a plurality of rod-shaped LEDs disposed between the first and second electrodes; a reflective contact electrode disposed on opposite ends of the rod-shaped LEDs to electrically connect the rod-shaped LEDs to the first and second electrodes; and a light-transmitting structure disposed between the first and second electrodes and extending to cross the rod-shaped LEDs.
    Type: Application
    Filed: August 6, 2021
    Publication date: November 25, 2021
    Applicant: Samsung Display Co., Ltd.
    Inventors: Jong Hyuk KANG, Hyun Min CHO, Dae Hyun KIM, Joo Yeol LEE, Hyun Deok IM
  • Patent number: 11183518
    Abstract: A transistor array panel is manufactured by a method that reduces or obviates the need for highly selective etching agents or complex processes requiring multiple photomasks to create contact holes. The panel includes: a substrate; a buffer layer positioned on the substrate; a semiconductor layer positioned on the buffer layer; an intermediate insulating layer positioned on the semiconductor layer; and an upper conductive layer positioned on the intermediate insulating layer, wherein the semiconductor layer includes a first contact hole, the intermediate insulating layer includes a second contact hole positioned in an overlapping relationship with the first contact hole, and the upper conductive layer is in contact with a side surface of the semiconductor layer in the first contact hole.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: November 23, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yu-Gwang Jeong, Hyun Min Cho, Su Bin Bae, Shin Il Choi, Sang Gab Kim
  • Publication number: 20210359165
    Abstract: A light emitting device may include at least one first electrode and at least one second electrode disposed on different layers on a substrate; a first insulating layer disposed between the first electrode and the second electrode; and at least one light emitting diode electrically connected between the at least one first electrode and the second electrode.
    Type: Application
    Filed: April 10, 2019
    Publication date: November 18, 2021
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Deok IM, Jong Hyuk KANG, Dae Hyun KIM, Hyun Min CHO, Dong Hyun KIM
  • Publication number: 20210358393
    Abstract: A method for manufacturing a display device including a substrate including a display area and a non-display area located outside the display area, the display area including pixel areas, is provided. First switching elements are formed in the pixel areas, respectively, and a circuit element layer that includes reference voltage wire in the non-display area and electrically connected to the first switching elements is formed. Pixel electrodes that include first pixel electrodes in the pixel areas on the circuit element layer, respectively, and electrically connected through the first switching elements to the reference voltage wire, and second pixel electrodes facing the first pixel electrodes, are formed. A plurality of light emitting elements are arranged between the first pixel electrodes and the second pixel electrodes.
    Type: Application
    Filed: July 8, 2019
    Publication date: November 18, 2021
    Inventors: Sin Chul KANG, Won Sik OH, Yo Han LEE, Hee Keun LEE, Hyun Min CHO
  • Publication number: 20210350746
    Abstract: A display device includes: a substrate; a display element layer on one surface of the substrate and including at least one light emitting element emitting light; and a pixel circuit portion on the display element layer and including at least one transistor electrically connected to the light emitting element, wherein the display element layer includes: a first electrode on the substrate and electrically connected to one end of the light emitting element; a second electrode on the substrate and electrically connected to the other end of the light emitting element; and an insulation layer on the substrate including the second electrode, and having a first opening exposing a portion of the second electrode, and wherein the second electrode is electrically connected to the transistor through the first opening.
    Type: Application
    Filed: July 23, 2021
    Publication date: November 11, 2021
    Inventors: Hyun Min CHO, Sung Chul KIM, Dae Hyun KIM, Hye Yong CHU, Jong Hyuk KANG, Keun Kyu SONG, Joo Yeol LEE, Bek Hyun LIM, Hyun Deok IM
  • Publication number: 20210351171
    Abstract: A display device may include: a substrate including a display area and a non-display area; and pixels disposed on the display area, and each including sub-pixels, each sub-pixel including a pixel circuit layer, and a display element layer including a light emitting element. The display element layer includes first and second electrodes spaced apart from each other; a first insulating layer disposed between the pixel circuit layer and the light emitting element; and a second insulating layer disposed on the light emitting element and filling spaces between the first insulating layer and ends of the light emitting element. The light emitting element includes a first conductive semiconductor layer, an active layer enclosing at least one side of the first conductive semiconductor layer, a second conductive semiconductor layer enclosing the active layer, an electrode layer enclosing the second conductive semiconductor layer, and an insulating film covering the electrode layer.
    Type: Application
    Filed: March 21, 2019
    Publication date: November 11, 2021
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Je Won YOO, Dae Hyun KIM, Bek Hyun LIM, Myeong Hee KIM, Chang Il TAE, Hyun Min CHO, Keun Kyu SONG, Jin Oh KWAG
  • Publication number: 20210343784
    Abstract: A display device comprises a substrate including a display area and a non-display area, and pixels disposed in the display area, each of the pixels including sub-pixels. Each of sub-pixels includes a pixel circuit layer, and a display element layer including at least one light emitting element. The display element layer includes first and second electrodes spaced apart from each other, the light emitting element disposed between the first electrode and second electrode, a first contact electrode that electrically connects an end of the light emitting element to the first electrode, and a second contact electrode that electrically connects another end of the light emitting element to the second electrode. Each of sub-pixels includes a first area in which the pixel circuit layer is disposed, and a second area adjacent to the first area. The second area includes a transmission area through which the light passes.
    Type: Application
    Filed: April 15, 2019
    Publication date: November 4, 2021
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin Oh KWAG, Jong Hyuk KANG, Keun Kyu SONG, Sung-Chan JO, Hyun Min CHO
  • Publication number: 20210343894
    Abstract: Provided is a method of manufacturing a light-emitting element, the method including positioning a substrate, forming a first separation layer, which includes a first sacrificial layer, an etching control layer on the first sacrificial layer, and a second sacrificial layer on the etching control layer, on the substrate, forming at least one first light-emitting element on the first separation layer, and separating the first light-emitting element from the substrate.
    Type: Application
    Filed: July 15, 2021
    Publication date: November 4, 2021
    Inventors: Jung Hong MIN, Dae Hyun KIM, Hyun Min CHO, Jong Hyuk KANG, Dong Uk KIM, Seung A LEE, Hyun Deok IM, Hyung Rae CHA
  • Publication number: 20210343783
    Abstract: A display deice includes a pair of first color sub-pixels arranged in a display area in a first direction, each of the pair of first color sub-pixels including at least one first color light emitting element, and a bank enclosing the pair of first color sub-pixels. The bank includes at least two areas having different widths in an area corresponding to each of the pair of first color sub-pixels.
    Type: Application
    Filed: April 1, 2019
    Publication date: November 4, 2021
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin Woo CHOI, Eun A YANG, Hyun Min CHO
  • Publication number: 20210327954
    Abstract: A display device comprises a first electrode, a second electrode disposed to be spaced apart from the first electrode and face the first electrode, a first insulating layer disposed to cover the first electrode and the second electrode, a second insulating layer disposed on at least a part of the first insulating layer and exposing at a part of a region where the first electrode and the second electrode overlaps the first insulating layer and at least one light emitting element on the exposed first insulating layer between the first electrode and the second electrode, wherein the second insulating layer includes at least one opening exposing the first insulating layer and disposed to be spaced apart from each other on a region where the first electrode and the second electrode face each other, and a bridge portion between the openings, and the light emitting element is disposed on the opening.
    Type: Application
    Filed: September 21, 2018
    Publication date: October 21, 2021
    Inventors: Hyun Min CHO, Dae Hyun KIM, Jin Oh KWAG, Dong Hyun KIM, Keun Kyu SONG, Hyun Deok IM, Sung Chan JO
  • Publication number: 20210327857
    Abstract: A display device includes a substrate including a display unit incuding a plurality of pixels and a protrusion protruding from an edge of the display unit, the plurality of pixels including a first pixel on an outermost region of the display unit and a second pixel adjacent to the first pixel; a driver on the protrusion; and a fan-out line to electrically connect the first pixel and the driver, wherein at least a portion of the fan-out line is on the display unit between the first pixel and the second pixel in a plan view.
    Type: Application
    Filed: January 25, 2021
    Publication date: October 21, 2021
    Inventors: Xinxing LI, Sung Kook PARK, Kang Young LEE, Hyun Min CHO, Chang Il TAE
  • Patent number: 11152424
    Abstract: A display device includes at least one first and second electrodes extending in a first direction, at least one first and second light emitting elements disposed therebetween, a first contact electrode partially covering the first electrode and contacting a first end of the first light emitting element, a second contact electrode partially covering the second electrode and contacting a third end of the second light emitting element, and a third contact electrode disposed between the first and second contact electrodes and contacting a second end of the first light emitting element and a fourth end of the second light emitting element, in which a distance between the first and second electrodes is greater than a longitudinal length of at least one of the first and second light emitting elements, and the first and second light emitting elements are connected in series between the first and second electrodes.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: October 19, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Xin Xing Li, Tae Jin Kong, Hee Keun Lee, Hyun Min Cho, Chang Il Tae
  • Publication number: 20210320231
    Abstract: A light emitting device may include: a substrate; a light emitting element located on the substrate and configured to emit light; a first electrode and a second electrode spaced from each other with the light emitting element interposed therebetween; a color conversion layer located on the substrate and configured to convert light emitted from the light emitting element into light having a specific color; a first contact electrode configured to electrically couple the first electrode with a first end of the light emitting element; and a second contact electrode configured to electrically couple the second electrode with a second end of the light emitting element. In a plan view, the color conversion layer may be spaced from the light emitting element and overlaps with at least one of the first and the second contact electrodes.
    Type: Application
    Filed: January 30, 2019
    Publication date: October 14, 2021
    Inventors: Dong Uk KIM, Je Won YOO, Hyun Min CHO, Jung Hong MIN
  • Publication number: 20210320089
    Abstract: An apparatus for manufacturing a light emitting display device includes a substrate transfer stage including a plurality of support plates arranged at an interval in a first direction, each of the plurality of support plates extending in a second direction; and at least one electric-field application module disposed on at least one side of the substrate transfer stage. The at least one electric-field application module includes a probe head including at least one probe pin; and a driver connected to the probe head to move the probe head at least up and down.
    Type: Application
    Filed: March 21, 2019
    Publication date: October 14, 2021
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong Hyuk KANG, Hae Yun CHOI, Han Su KIM, Eun A YANG, Hyun Min CHO, Keun Kyu SONG, Jin Oh KWAG
  • Publication number: 20210313494
    Abstract: A light emitting device includes a first semiconductor layer, an active layer disposed on the first semiconductor layer, a second semiconductor layer disposed on the active layer, a first insulating film surrounding an outer surface of at least one layer from among the first semiconductor layer, the second semiconductor layer, and the active layer; and a second insulating film surrounding an outer surface of the first insulating film.
    Type: Application
    Filed: February 13, 2019
    Publication date: October 7, 2021
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Deok IM, Jong Hyuk KANG, Hyun Min CHO
  • Publication number: 20210305222
    Abstract: A light emitting device may include a first electrode disposed on a substrate, and a second electrode spaced apart from the first electrode, the first electrode and the second electrode being disposed on a same layer; an insulating pattern disposed between the first electrode and the second electrode, and overlapping a portion of the first electrode and a portion of the second electrode; and at least one light emitting element disposed on the insulating pattern, and including a first end and a second end in a longitudinal direction of the at least one light emitting element; a first bank disposed on the first electrode, and a second bank disposed on the second electrode; a first reflective electrode disposed on the first bank and electrically connected with the first electrode; and a second reflective electrode disposed on the second bank and electrically connected with the second electrode.
    Type: Application
    Filed: December 13, 2018
    Publication date: September 30, 2021
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung Hong MIN, Dae Hyun KIM, Hyun Deok IM, Hyun Min CHO, Jong Hyuk KANG, Dong Uk KIM, Bek Hyun LIM, Jae Ik LIM