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: 20220350194
    Abstract: A wide viewing angle liquid crystal display includes color filters having a quantum dot and scattering particles and liquid crystal layer disposed in a microcavity, a distance between the color filter and the liquid crystal layer being sized to minimize display deterioration due to parallax.
    Type: Application
    Filed: July 13, 2022
    Publication date: November 3, 2022
    Inventors: JAE BYUNG PARK, SUNG SIK YUN, JONG HYUK KANG, HAE IL PARK, HYUN MIN CHO
  • Publication number: 20220352244
    Abstract: A display device includes a pixel disposed in a display area; a first line electrically connected to the pixel; and a first control line disposed around the first line. The pixel includes a first electrode and a second electrode spaced apart from each other; at least one intermediate electrode including a first intermediate electrode disposed between the first electrode and the second electrode; light emitting elements electrically connected between a pair of adjacent electrodes among the first electrode, the second electrode, and the at least one intermediate electrode; and a first switching element electrically connected between the first intermediate electrode and the first line, the first switching element being controlled by a signal applied to the first control line.
    Type: Application
    Filed: April 10, 2020
    Publication date: November 3, 2022
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sin Chul KANG, Su Mi MOON, Jae Woong KANG, Won Sik OH, Hyun Min CHO
  • Patent number: 11488520
    Abstract: A pixel includes a first light source including at least one first light emitting element between a first split electrode and a second power supply; a second light source unit including at least one second light emitting element between a second split electrode and the second power supply; a driving-current generator including a first transistor between a first power supply and the first and second light source units and generating a driving current corresponding to a first data signal; a first switching unit including a first switching element between the driving-current generator and the first light source; and a second switching unit including a second switching element between the driving-current generator and the second light source unit and controlling an electrical connection between the first and second light source units in response to a second data signal.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: November 1, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yo Han Lee, Su Mi Moon, Hyun Min Cho
  • Publication number: 20220344536
    Abstract: A light-emitting element includes a first semiconductor layer doped with an n-type dopant, a second semiconductor layer doped with a p-type dopant, a light emitting layer disposed between the first semiconductor layer and the second semiconductor layer, and an insulating film that surrounds the first semiconductor layer, the second semiconductor layer, and the light emitting layer. A doping concentration of the first semiconductor layer is in a predetermined range. A display device includes the light-emitting element.
    Type: Application
    Filed: January 27, 2022
    Publication date: October 27, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Won Ho LEE, Seung A LEE, Jin Hyuk JANG, Jong Hyuk KANG, Hyun Deok IM, Sang Ho JEON, Eun A CHO, Hyun Min CHO
  • Publication number: 20220336527
    Abstract: A light emitting device includes: a first semiconductor layer that is doped with a first polarity dopant, and that includes a first part extending in a first direction and a second part connected to one side of the first part; a second semiconductor layer doped with second polarity dopant that differs from the first polarity dopant; an active layer between the first semiconductor layer and the second semiconductor layer; and an insulation film around at least the outer surface of the active layer and extends in the first direction, wherein the diameter of the second part measured in a second direction perpendicular to the first direction is larger than the diameter of the first part measured in the second direction, and the side surface of the second part is inclined.
    Type: Application
    Filed: February 27, 2020
    Publication date: October 20, 2022
    Inventors: Hyung Rae CHA, Dong Uk KIM, Myeong Hee KIM, Se Young KIM, Hyun Min CHO
  • Publication number: 20220328742
    Abstract: A light emitting device may include: a substrate including a plurality of unit light emitting regions; and first to fourth insulating layers sequentially on the substrate.
    Type: Application
    Filed: June 17, 2022
    Publication date: October 13, 2022
    Inventors: Dae Hyun KIM, Hyun Min CHO, Hyun Deok IM, Jong Hyuk KANG, Keun Kyu SONG, Joo Yeol LEE, Bek Hyun LIM, SUNG-CHAN JO
  • Publication number: 20220285586
    Abstract: A display device may include: a base layer including a plurality of islands, at least one first bridge configured to connect the islands in a first direction, and at least one second bridge configured to connect the islands in a second direction; and at least one pixel including a plurality of sub-pixels in the base layer. Each of the sub-pixels may include: a first electrode and a second electrode in one island of the islands and spaced from each other; a third electrode and a fourth electrode in one bridge of the at least one first bridge and the at least one second bridge and spaced from each other; at least one first light emitting element between the first electrode and the second electrode; and at least one second light emitting element between the third electrode and the fourth electrode.
    Type: Application
    Filed: February 2, 2020
    Publication date: September 8, 2022
    Inventors: Eun A YANG, Jin Woo CHOI, Hyun Min CHO
  • Publication number: 20220278253
    Abstract: A display device includes a substrate including a display area and a non-display area; and at least one pixel provided in the display area, and including a pixel circuit layer. The display element layer includes at least one transistor, and a display element layer including at least one light emitting element emitting light, and a first electrode and a second electrode spaced apart from each other, disposed on the substrate, and each extending in a first direction, and the at least one light emitting element is electrically connected to each of the first and the second electrodes. The first electrode has at least two widths in an extension direction of the first electrode. The second electrode has at least two widths in an extension direction of the second electrode.
    Type: Application
    Filed: March 4, 2020
    Publication date: September 1, 2022
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Eun A YANG, Jong Hyuk KANG, Hyun Deok IM, Hyun Min CHO
  • Publication number: 20220278173
    Abstract: A display device may include a first sub-pixel including a first light emitting element disposed in a first sub-pixel area of a substrate, a second sub-pixel including a second light emitting element disposed in a second sub-pixel area located in a first direction with respect to the first sub-pixel area of the substrate, a bank layer disposed between the first and second sub-pixels, a first color filter pattern disposed on the first sub-pixel and the bank layer, and a second color filter pattern disposed on the second sub-pixel and the bank layer. The first light emitting element may emit light having a first color. The second light emitting element may emit light having a second color. The first color filter pattern and the second color filter pattern may at least partially overlap each other on the bank layer.
    Type: Application
    Filed: June 26, 2020
    Publication date: September 1, 2022
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae Jin KONG, Hyun Min CHO, Dae Hyun KIM, Su Mi MOON, Xinxing LI, Hee Keun LEE
  • Patent number: 11430912
    Abstract: A light emitting element, a method of manufacturing a light emitting element, and a display device including a light emitting element are provided. A method of manufacturing a light emitting element includes: preparing a lower panel including a substrate and a first sub conductive semiconductor layer on the substrate; forming a first mask layer including at least one mask pattern on at least a part of the lower panel to be spaced apart from each other and an opening region in which the mask patterns are spaced apart from each other; laminating a first conductive semiconductor layer, an active material layer, and a second conductive semiconductor layer on the first mask layer to form an element laminate; etching the element laminate in a vertical direction to form an element rod; and removing the mask pattern to separate the element rod from the lower panel.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: August 30, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung Hong Min, Dae Hyun Kim, Seung A Lee, Hyun Min Cho, Jong Hyuk Kang, Dong Uk Kim, Hyun Deok Im, Hyung Rae Cha
  • Publication number: 20220262984
    Abstract: A pixel includes a first bank pattern and a second bank pattern disposed on a base layer; a first electrode and a second electrode disposed on the first bank pattern and the second bank pattern, and spaced apart from each other; a light emitting element disposed between the first electrode and the second electrode, and including a first end electrically connected to the first electrode, and a second end electrically connected to the second electrode; and at least one insulating layer overlapping the light emitting element and at least one of the first electrode and the second electrode. The at least one insulating layer includes at least one of a first opening adjacent to the first end of the light emitting element and a second opening adjacent to the second end of the light emitting element.
    Type: Application
    Filed: March 4, 2020
    Publication date: August 18, 2022
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hae Yun CHOI, Jong Hyuk KANG, Hyun Deok IM, Jae Hoon JUNG, Han Su KIM, Eun A YANG, Hyun Min CHO
  • Publication number: 20220254863
    Abstract: An organic light emitting diode display including: a substrate; a TFT on the substrate; a planarization layer on the TFT; a pixel electrode on the planarization layer, wherein the pixel electrode includes upper and lower layers including a transparent conductive oxide and an intermediate layer including silver; an etch stop layer on the pixel electrode, wherein an upper surface of the pixel electrode is exposed by the etch stop layer; a partition on the etch stop layer, wherein the upper surface of the pixel electrode is exposed by the partition; an organic emission layer on the upper surface of the pixel electrode where the upper surface of the pixel electrode is exposed by the etch stop layer and the partition; and a common electrode on the organic emission layer and the partition, wherein the etch stop layer covers an edge and a side surface of the pixel electrode.
    Type: Application
    Filed: April 29, 2022
    Publication date: August 11, 2022
    Inventors: Kyeong Su KO, Joon Yong Park, Gyung Min Baek, Hyun Min Cho, Dae Won Choi
  • Publication number: 20220254753
    Abstract: A dipole alignment device includes an electric field forming part including a stage, and a probe part which form an electric field on the stage; an inkjet printing apparatus including at least one inkjet head which sprays ink including dipoles and a solvent with the dipoles dispersed therein onto the stage; a transportation part comprising a first moving part which moves the electric field forming part in at least one direction; and a light irradiation apparatus including a light irradiation part which applies light to the ink sprayed onto the stage.
    Type: Application
    Filed: June 3, 2020
    Publication date: August 11, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Won Ho LEE, Hyun Deok IM, Jong Hyuk KANG, Jin Oh KWAG, Keun Kyu SONG, Sung Chan JO, Hyun Min CHO
  • Publication number: 20220254959
    Abstract: A light emitting element having a shape extending in a direction includes a first semiconductor layer and a second semiconductor layer, an active layer between the first and second semiconductor layers, a first electrode layer on a second surface opposite to a first surface of the first semiconductor layer facing the active layer, a second electrode layer on a second surface opposite to a first surface of the second semiconductor layer facing the active layer, and an insulating film surrounding a side surface of the active layer, a side surface of the first electrode layer, and a side surface of the second electrode layer, wherein a first area including the insulating film adjacent to a side surface of the active layer has a thickness larger than a thickness of a second area including the insulating film adjacent to a side surface of the first electrode layer.
    Type: Application
    Filed: June 3, 2020
    Publication date: August 11, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Seung Geun LEE, Dong Uk KIM, Dae Hyun KIM, Se Young KIM, Hyun Min CHO, Hyung Rae CHA
  • Patent number: 11409155
    Abstract: A wide viewing angle liquid crystal display includes color filters having a quantum dot and scattering particles and liquid crystal layer disposed in a microcavity, a distance between the color filter and the liquid crystal layer being sized to minimize display deterioration due to parallax.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: August 9, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Byung Park, Sung Sik Yun, Jong Hyuk Kang, Hae Il Park, Hyun Min Cho
  • Patent number: 11411044
    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: Grant
    Filed: September 21, 2018
    Date of Patent: August 9, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Min Cho, Dae Hyun Kim, Jin Oh Kwag, Dong Hyun Kim, Keun Kyu Song, Hyun Deok Im, Sung Chan Jo
  • Patent number: 11411066
    Abstract: A display device and a method of the display device are provided. The display device includes a lower metal layer on a substrate, a buffer layer on the lower metal layer, a first semiconductor layer on the buffer layer, a gate insulating layer on the first semiconductor layer, a first gate electrode on the gate insulating layer, an interlayer insulating layer on the first gate electrode, a via layer on the interlayer insulating layer, a pixel electrode on the via layer and electrically connected to the first semiconductor layer, a light emitting layer on the pixel electrode, a common electrode on the light emitting layer, a first contact hole penetrating the buffer layer and the interlayer insulating layer and a second contact hole penetrating the interlayer insulating layer, and a first via hole and a second via hole each penetrating the via layer.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: August 9, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Min Cho, Sang Gab Kim, Tae Sung Kim
  • Patent number: 11403997
    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: Grant
    Filed: April 11, 2019
    Date of Patent: August 2, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin Oh Kwag, Won Sik Oh, Keun Kyu Song, Sung-Chan Jo, Hyun Min Cho
  • Publication number: 20220231080
    Abstract: A display device includes a pixel disposed in a display area. The pixel includes a first electrode; a first insulating layer disposed on the first electrode, and including openings, each of the openings exposing different areas of the first electrode and defining respective cells; light emitting elements disposed in the respective cells, each of the light emitting elements including a first end electrically connected to the first electrode; and a second end protruding upward from the first insulating layer; and a second electrode disposed on the light emitting elements, and electrically connected to the second ends of each of the light emitting elements.
    Type: Application
    Filed: January 16, 2020
    Publication date: July 21, 2022
    Applicant: SAMSUNG DISPLAY Co., LTD.
    Inventors: Xinxing LI, Tae Jin KONG, Dae Hyun KIM, Veidhes BASRUR, Hyun Min CHO
  • Publication number: 20220223760
    Abstract: A display device includes at least one pixel; at least one electrode spaced apart from each other in each of the at least one pixel; and at least one light-emitting element disposed between the at least one electrode, wherein the at least one electrode include at least one inner electrode disposed adjacent to the center of each of the at least one pixel; and at least one outer electrode spaced apart from each of the at least one inner electrode, a distance between the central portion of the at least one pixel and the at least one outer electrode is greater than a distance between the central portion of the at least one pixel and the inner electrode, and a width of the at least one inner electrode is different from a width of the at least one outer electrode.
    Type: Application
    Filed: May 20, 2020
    Publication date: July 14, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Hyun Deok IM, Jong Hyuk KANG, Dae Hyun KIM, Won Hee NAM, Ki Sun JANG, Hyun Min CHO