Patents by Inventor Jong-Hwan Cha

Jong-Hwan Cha 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: 20240153792
    Abstract: An apparatus and method for processing a substrate can reduce the concentration of process by-products in a chemical solution.
    Type: Application
    Filed: November 7, 2023
    Publication date: May 9, 2024
    Applicants: SEMES CO., LTD., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min Jung KIM, Jin Ah HAN, Hee Hwan KIM, Yong Hoon HONG, Kyoung Suk KIM, Jong Hyeok PARK, Jin Hyung PARK, Dae Hyuk CHUNG, Ji Hoon CHA
  • Publication number: 20240136488
    Abstract: A pixel may include: an emission area and a non-emission area; a first bank in the non-emission area, the first bank including an opening corresponding to the emission area; a first electrode, a second electrode, and an intermediate electrode that are spaced from each other; light emitting elements in the emission area, each of the light emitting elements including one end portion electrically connected to one of the first electrode, the second electrode, or the intermediate electrode and an other end portion electrically connected to another one of the first electrode, the second electrode, or the intermediate electrode; and a sub-bank located in the opening of the first bank, the sub-bank being spaced from the first bank. The intermediate electrode may be around at least a portion of the sub-bank.
    Type: Application
    Filed: October 16, 2023
    Publication date: April 25, 2024
    Inventors: Jin Taek KIM, Veidhes BASRUR, Ki Nyeng KANG, Ock Soo SON, Yong Tae CHO, Jong Hwan CHA
  • Publication number: 20240120346
    Abstract: A display device includes a display area, a non-display area, a pixel circuit including a thin film transistor, a gate driver in the non-display area for supplying a gate signal to the pixel circuit, a via layer above the pixel circuit and the gate driver, first and second electrodes above the via layer in the display area, and extending substantially in parallel with each other, a light-emitting element between the first electrode and the second electrode, a first contact electrode connected to one end of the light-emitting element, and a protective metal layer overlapping the gate driver, and including a first layer at a same layer as the first electrode and the second electrode, the first layer defining first holes, and a second layer at a same layer as the first contact electrode, at least partially filling the first holes, and contacting an upper surface of the via layer.
    Type: Application
    Filed: August 25, 2023
    Publication date: April 11, 2024
    Inventors: Jong Hwan PARK, Ki Nyeng KANG, Jong Hwan CHA
  • Publication number: 20240038937
    Abstract: A display device including a substrate, a first electrode and a second electrode on the substrate, extending parallel to each other along a first direction, and spaced from each other in a second direction intersecting the first direction, a plurality of light emitting elements on the first electrode and the second electrode, a first insulating layer partially covering upper surfaces of the light emitting elements, a first connection electrode on the plurality of light emitting elements and the first insulating layer, the first connection electrode being in contact with an end of each of the plurality of light emitting elements, a second insulating layer on the first connection electrode, a second connection electrode on the second insulating layer, the second connection electrode being in contact with an other end of each of the plurality of light emitting elements, and a first dummy electrode overlapping the first connection electrode.
    Type: Application
    Filed: June 22, 2023
    Publication date: February 1, 2024
    Inventors: Veidhes BASRUR, Ki Nyeng KANG, Ock Soo SON, Jong Hwan CHA
  • Publication number: 20230343913
    Abstract: A display device includes a first pixel, a second pixel, and a third pixel, each disposed on a substrate and including a pixel circuit, a first metal line disposed at a first metal layer on the substrate, extending in a first direction on a first side of the pixel circuits of the first to third pixels, and electrically connected to at least one of the pixel circuits of the first to third pixels, a second metal line disposed at a second metal layer on the first metal layer, extending in the first direction on a first side of the first metal line, and electrically connected to at least one of the pixel circuits of the first to third pixels, and a third metal line disposed at the first metal layer, extending in the first direction on a first side of the second metal line, and electrically connected to at least one of the pixel circuits of the first to third pixels. Each of the first to third metal lines supplies a voltage to at least one of the pixel circuits of the first to third pixels.
    Type: Application
    Filed: January 5, 2023
    Publication date: October 26, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Jong Hwan CHA, Kwang Taek HONG, Ki Nyeng KANG, Hong Joon MOON
  • Publication number: 20230290790
    Abstract: A display device includes pixels. Each of the pixels includes electrodes disposed on a base layer; a first insulating layer disposed on the electrodes; a light emitting element disposed on the first insulating layer; a bank disposed on the first insulating layer and protruding in a thickness direction of the base layer; and a second insulating layer, at least a portion of the second insulating layer being disposed on the first insulating layer. At least part of the electrodes of a pixel among the pixels are spaced apart from at least part of the electrodes of another pixel adjacent to the pixel with an open area being disposed between the electrodes. The first insulating layer includes a first opening overlapping the open area in a plan view, and the second insulating layer includes a second opening overlapping the open area in a plan view.
    Type: Application
    Filed: September 15, 2022
    Publication date: September 14, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Veidhes BASRUR, Ock Soo SON, Ki Nyeng KANG, Jong Hwan CHA
  • Publication number: 20230282681
    Abstract: A display device includes electrodes disposed in a display area and spaced apart from each other, light emitting elements disposed between the electrodes, conductive lines disposed in a non-display area and electrically connected to the electrodes, and dummy pixels disposed on the conductive lines. The dummy pixels each may include dummy partition walls spaced apart from each other, and dummy electrodes disposed on the partition walls and spaced apart from each other.
    Type: Application
    Filed: February 15, 2023
    Publication date: September 7, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Jae Hee KIM, Ki Nyeng KANG, In Pyo KIM, Jeong Kook WANG, Hyo Jeong LEE, Jong Hwan CHA
  • Publication number: 20230275191
    Abstract: A display device includes a substrate including a first light emitting area, a second light emitting area, and a third light emitting area; first banks spaced apart from each other on the substrate; first electrodes and second electrodes disposed on the first bank, covering the first bank, and spaced apart from each other; light emitting elements respectively disposed on the first electrodes and the second electrodes; and second banks respectively disposed on the first electrodes and the second electrodes, the second banks include a second-first bank defining the first light emitting area, a second-second bank defining the second light emitting area, and a second-third bank defining the third light emitting area, and a size of the second-first bank, a size of the second-second bank, and a size of the second-third bank are different from each other in a plan view.
    Type: Application
    Filed: October 19, 2022
    Publication date: August 31, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Veidhes BASRUR, Ki Nyeng KANG, Ock Soo SON, Jong Hwan CHA
  • Publication number: 20230260981
    Abstract: A display device includes first group electrodes and the second group electrodes spaced apart from second group electrodes in a first direction, respectively, light emitting elements disposed on the first group electrodes and the second group electrodes, a first connection electrode and a second connection electrode disposed on the first group electrodes and extending in the first direction, a third connection electrode and a fourth connection electrode disposed on the first group electrodes and the second group electrodes and extending in the first direction, and a fifth connection electrode disposed on at least two electrodes of the second group electrodes and spaced apart from the first connection electrode and the second connection electrode in the first direction. Each of the first connection electrode, the second connection electrode, and the fifth connection electrode is disposed between the third connection electrode and the fourth connection electrode in a second direction.
    Type: Application
    Filed: September 13, 2022
    Publication date: August 17, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Veidhes BASRUR, Ki Nyeng KANG, Ock Soo SON, Jong Hwan CHA
  • Publication number: 20230261143
    Abstract: A display device includes: a first substrate; a first conductive layer including a first voltage line and a second voltage line on the first substrate; a first transistor on the first conductive layer and electrically connected to the first voltage line; a plurality of first banks on the first transistor and spaced apart from each other; a first electrode on the plurality of first banks and electrically connected to the first transistor, and a second electrode on the plurality of first banks and electrically connected to the second voltage line; a plurality of light-emitting diodes on the first electrode and the second electrode; and a first contact electrode coming into contact with an end portion of each of the light-emitting diodes and on the first electrode, and a second contact electrode coming into contact with another end portion of each of the light-emitting diodes and on the second electrode.
    Type: Application
    Filed: September 7, 2021
    Publication date: August 17, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Jong Hwan CHA, Seung Jin CHU, Je Min LEE
  • Publication number: 20230253413
    Abstract: Provided herein is a display device and a method of fabricating the display device. The display device includes a substrate including a display area and a non-display area, a via layer disposed in the display area, electrodes disposed on the via layer and spaced apart from each other, light emitting elements disposed between the electrodes, dummy pattern layers disposed in the non-display area, and dummy electrodes disposed on the dummy pattern layers. The via layer and the dummy pattern layers may be disposed on a same layer. The electrodes and the dummy electrodes may be disposed on a same layer.
    Type: Application
    Filed: January 11, 2023
    Publication date: August 10, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Veidhes BASRUR, Ki Nyeng KANG, In Pyo KIM, Ock Soo SON, Jong Hwan CHA
  • Publication number: 20230246133
    Abstract: A display device and a method of repairing the same, where the display device includes a substrate, a first electrode, a second electrode, and a third electrode on the substrate and sequentially arranged along a first direction, at least one first light emitting element between the first electrode and the second electrode, at least one second light emitting element between the second electrode and the third electrode, a first contact electrode that is in contact with the first electrode and one end of the first light emitting element, a second contact electrode having one side that is in contact with another end of the first light emitting element and another side that is in contact with the third electrode and one end of the second light emitting element, a third contact electrode that is in contact with the second electrode and another end of the second light emitting element.
    Type: Application
    Filed: June 23, 2020
    Publication date: August 3, 2023
    Inventors: Jong Hwan CHA, Ki Nyeng KANG
  • Publication number: 20230231096
    Abstract: A display device comprises electrode patterns spaced apart from each other in a first direction; a via layer disposed on the electrode patterns; first electrodes, each of the first electrodes partially overlapping an electrode pattern of the electrode patterns on the via layer in a plan view and extending in a second direction intersecting the first direction; second electrodes, each of the second electrodes comprising a portion extending in the second direction, the first electrodes and the second electrodes being spaced apart from each other and alternately disposed with each other; and light emitting elements disposed on a first electrode of the first electrodes and a second electrode of the second electrodes. The first electrodes are in contact with the electrode patterns through first electrode contact holes penetrating the via layer, and the first electrode contact holes are spaced apart from each other in the first direction.
    Type: Application
    Filed: January 3, 2023
    Publication date: July 20, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Jong Hwan CHA, Ki Nyeng KANG, Jin Taek KIM, Hong Joon MOON
  • Publication number: 20230187427
    Abstract: A display device includes electrodes spaced apart from each other, light emitting elements disposed between the electrodes, and connection electrodes electrically connected to the light emitting elements. The connection electrodes include first areas in electrical contact with the light emitting elements and second areas extending upwardly from the light emitting elements. A space is formed between the light emitting elements and the second areas of the connection electrodes.
    Type: Application
    Filed: October 4, 2022
    Publication date: June 15, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: In Pyo KIM, Ki Nyeng KANG, Jae Hee KIM, Hong Joon MOON, Jeong Kook WANG, Jong Hwan CHA
  • Publication number: 20230187472
    Abstract: A display device may include a first electrode and a second electrode spaced from each other on a substrate. A light emitting element may be on the first electrode and the second electrode. A first insulating pattern may be on the light emitting element. A first contact electrode may be on a first side of the first insulating pattern and contacting a first end of the light emitting element. A second insulating pattern may be on the first insulating pattern and partially covering the first contact electrode. A third insulating layer may be on the second insulating pattern. A second contact electrode may be on a second side of the first insulating pattern, and contact a second end of the light emitting element that is exposed from the first insulating pattern, the second insulating pattern, and the third insulating layer.
    Type: Application
    Filed: December 6, 2022
    Publication date: June 15, 2023
    Inventors: Jae Hee KIM, Ki Nyeng KANG, In Pyo KIM, Jeong Kook WANG, Hyo Jeong LEE, Jong Hwan CHA
  • Publication number: 20230155064
    Abstract: A display device includes light-emitting elements disposed on first and second electrodes, and having first end portions disposed on the first electrode, and second end portions disposed on the second electrode, a first connecting electrode extending in a first direction and disposed on the first electrode, the first connecting electrode being in contact with the first end portions of the light-emitting elements, a second connecting electrode extending in the first direction and disposed on the second electrode, the second connecting electrode being in contact with the second end portions of the light-emitting elements, and a connecting electrode pattern disposed on the first electrode, the connecting electrode pattern overlapping the first connecting electrode. The second connecting electrode and the connecting electrode pattern include a same material, and a thickness of the first connecting electrode is less than a thickness of the second connecting electrode and the connecting electrode pattern.
    Type: Application
    Filed: August 26, 2022
    Publication date: May 18, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Jeong Kook WANG, Ki Nyeng KANG, In Pyo KIM, Jae Hee KIM, Hong Joon MOON, Jong Hwan CHA
  • Publication number: 20230142777
    Abstract: A display device includes an emission area, a first sub-region on one side of the emission area in a first direction, and a second sub-region on an other side of the emission area in the first direction, a bank layer surrounding the emission area, the first sub-region, and the second sub-region, a first voltage line extending in a second direction crossing the first direction in the first sub-region, and a second voltage line extending in the second direction in the second sub-region, a first electrode extending in the first direction and disposed across the first sub-region, the emission area, and the second sub-region, a second electrode extending in the first direction and including a portion spaced from the first electrode in the second direction in the emission area, and a plurality of light emitting elements on the first electrode and the second electrode in the emission area.
    Type: Application
    Filed: October 11, 2022
    Publication date: May 11, 2023
    Inventors: Jong Hwan CHA, Ki Nyeng KANG, Hong Joon MOON, Kwang Taek HONG
  • Publication number: 20230032600
    Abstract: A display device comprises an initialization voltage line on a substrate, a first interlayer insulating layer disposed on the initialization voltage line, a low potential voltage line disposed on the first interlayer insulating layer, and having a stepped portion and overlapping the initialization voltage line, an auxiliary pattern disposed on the low potential voltage line and forming a flat portion with the stepped portion of the low potential voltage line, a second interlayer insulating layer disposed on the auxiliary pattern, a planarization layer disposed on the second interlayer insulating layer, a first electrode and a second electrode disposed on the planarization layer and spaced apart from each other, a light emitting element having ends aligned on the first electrode and the second electrode, a first contact electrode electrically contacting an end of the light emitting element, and a second contact electrode electrically contacting another end of the light emitting element.
    Type: Application
    Filed: June 9, 2022
    Publication date: February 2, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Kwang Taek HONG, Hong Joon MOON, Jong Hwan CHA
  • Publication number: 20220406971
    Abstract: A first electrode upper layer of an electrode upper layer of a display device and a second electrode upper layer are disposed to partially expose a top surface of the first electrode base layer and a top surface of the second electrode base layer, respectively. A first insulating layer of the display device includes contact portions partially exposing a top surface of the first electrode base layer, a top surface of the second electrode base layer, and a top surface of the pad electrode upper layer.
    Type: Application
    Filed: June 3, 2022
    Publication date: December 22, 2022
    Applicant: Samsung Display Co., LTD.
    Inventor: Jong Hwan CHA
  • Publication number: 20220320378
    Abstract: A display device includes an emission area and a subarea located at a side of the emission area in a first direction, a first electrode extending in the first direction across the emission area and the subarea, a second electrode spaced from the first electrode in a second direction, the second electrode extending in the first direction, a first insulating layer on the first and second electrodes, the first insulating layer including an opening in the subarea, a plurality of light-emitting elements located on the first and second electrodes in the emission area, and a second insulating layer on the first insulating layer in the subarea, wherein the first electrode includes a first electrode extension located in the subarea at a first contact hole, the opening overlaps with the first contact hole and is located above the first electrode extension, and the second insulating layer overlaps the opening.
    Type: Application
    Filed: November 24, 2021
    Publication date: October 6, 2022
    Inventors: Kwang Taek HONG, Ki Nyeng KANG, Jong Hwan CHA, Hee Keun LEE, Min Cheol CHAE, Su Min CHOI