Patents by Inventor Chong Sup CHANG

Chong Sup CHANG 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: 20230061844
    Abstract: A display device includes a display area and a pad area, a first electrode and a second electrode disposed on a substrate in the display area, the first electrode and the second electrode being spaced apart from each other, a transistor disposed on the substrate in the display area, the transistor being electrically connected to the first electrode, and including a first transistor electrode and a second transistor electrode; a light emitting element disposed on the first electrode and the second electrode; and a pad structure disposed on the substrate in the pad area, the pad structure including a first pad pattern and a second pad pattern which is disposed on the first pad pattern and is electrically connected to the first pad pattern.
    Type: Application
    Filed: March 29, 2022
    Publication date: March 2, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Chong Sup CHANG, Young Seok BAEK, Ha Na SEO, Eui Kang HEO
  • Patent number: 11594639
    Abstract: A thin film transistor according to an exemplary embodiment of the present invention includes an oxide semiconductor. A source electrode and a drain electrode face each other. The source electrode and the drain electrode are positioned at two opposite sides, respectively, of the oxide semiconductor. A low conductive region is positioned between the source electrode or the drain electrode and the oxide semiconductor. An insulating layer is positioned on the oxide semiconductor and the low conductive region. A gate electrode is positioned on the insulating layer. The insulating layer covers the oxide semiconductor and the low conductive region. A carrier concentration of the low conductive region is lower than a carrier concentration of the source electrode or the drain electrode.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: February 28, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yong Su Lee, Yoon Ho Khang, Dong Jo Kim, Hyun Jae Na, Sang Ho Park, Se Hwan Yu, Chong Sup Chang, Dae Ho Kim, Jae Neung Kim, Myoung Geun Cha, Sang Gap Kim, Yu-Gwang Jeong
  • Patent number: 11450268
    Abstract: A display device includes a substrate including a display area and a non-display area around the display area; and a display element layer on the substrate. The display element layer may include first and second electrodes extending in a first direction and spaced apart from each other in a second direction that is different from the first direction; a first light emitting element electrically coupled to the first and second electrodes; a first dummy electrode extending in the first direction and spaced apart from the first and second electrodes; second dummy electrodes spaced apart from each other in the first direction and spaced apart from the first electrode, the second electrode, and the first dummy electrode; and a second light emitting element electrically coupled to the first dummy electrode and the second dummy electrodes.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: September 20, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chong Sup Chang, Eui Kang Heo, Young Seok Baek, Ha Na Seo
  • Publication number: 20220263002
    Abstract: A display device includes a substrate, a first electrode and a second electrode which are spaced apart from each other on the substrate, a first insulating pattern on the substrate to cover at least a portion of each of the first electrode and the second electrode, a light emitting element between the first electrode and the second electrode on the first insulating pattern, a first contact electrode in contact with the first electrode and one end portion of the light emitting element, a second contact electrode in contact with the second electrode and another end portion of the light emitting element, and a second insulating pattern on the light emitting element and of which at least a portion is in contact with each of the first contact electrode and the second contact electrode, wherein the second insulating pattern includes a first upper surface not in contact with the first contact electrode or the second contact electrode.
    Type: Application
    Filed: April 29, 2022
    Publication date: August 18, 2022
    Inventors: Chong Sup CHANG, Hyun Ae KIM, Eui Kang HEO
  • Publication number: 20220238598
    Abstract: A display device includes a substrate, a first inner bank and a second inner bank on the substrate and spaced apart from each other, a first electrode on the first inner bank and a second electrode on the second inner bank, and a light emitting element between the first inner bank and the second inner bank, the light emitting element being electrically coupled to the first electrode and the second electrode, wherein the first inner bank comprises a first side surface facing the second inner bank, the second inner bank comprises a second side surface facing the first side surface, and the first side surface and the second side surface are respectively recessed into the first inner bank and the second inner bank, to have a curved shape.
    Type: Application
    Filed: April 11, 2022
    Publication date: July 28, 2022
    Inventors: Eui Kang HEO, Chong Sup CHANG
  • Patent number: 11393798
    Abstract: A display device includes a first electrode and a second electrode disposed on a substrate and spaced apart from each other, a first light emitting element disposed between the first electrode and the second electrode, a second light emitting element disposed on the first electrode and spaced apart from the first light emitting element, and an insulating layer disposed on the first electrode and overlapping the second light emitting element. The insulating layer includes at least one contact hole which penetrates the insulating layer to expose a part of the first electrode.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: July 19, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Eui Kang Heo, Chong Sup Chang
  • Patent number: 11349054
    Abstract: A display device includes a substrate, a first electrode and a second electrode which are spaced apart from each other on the substrate, a first insulating pattern on the substrate to cover at least a portion of each of the first electrode and the second electrode, a light emitting element between the first electrode and the second electrode on the first insulating pattern, a first contact electrode in contact with the first electrode and one end portion of the light emitting element, a second contact electrode in contact with the second electrode and another end portion of the light emitting element, and a second insulating pattern on the light emitting element and of which at least a portion is in contact with each of the first contact electrode and the second contact electrode, wherein the second insulating pattern includes a first upper surface not in contact with the first contact electrode or the second contact electrode.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: May 31, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chong Sup Chang, Hyun Ae Kim, Eui Kang Heo
  • Patent number: 11302747
    Abstract: A display device includes a substrate, a first inner bank and a second inner bank on the substrate and spaced apart from each other, a first electrode on the first inner bank and a second electrode on the second inner bank, and a light emitting element between the first inner bank and the second inner bank, the light emitting element being electrically coupled to the first electrode and the second electrode, wherein the first inner bank comprises a first side surface facing the second inner bank, the second inner bank comprises a second side surface facing the first side surface, and the first side surface and the second side surface are respectively recessed into the first inner bank and the second inner bank, to have a curved shape.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: April 12, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Eui Kang Heo, Chong Sup Chang
  • Publication number: 20220085243
    Abstract: A display device includes a first electrode and a second electrode disposed on a substrate and spaced part from each other in a first direction. A light emitting element is disposed between the first electrode and the second electrode. A third electrode is disposed on the first electrode and electrically contacts an end portion of the light emitting element. A fourth electrode is disposed on the second electrode and electrically contacts another end portion of the light emitting element. A side of the third electrode and a side of the first electrode are located on a first virtual line substantially perpendicular to the substrate. A side of the fourth electrode facing the side of the third electrode and the side of the second electrode are located on a second virtual line substantially perpendicular to the substrate.
    Type: Application
    Filed: May 4, 2021
    Publication date: March 17, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Chong Sup CHANG, Cha Dong KIM, Hee Na KIM, In Kyung YOO, Sang Jin LEE
  • Publication number: 20220077125
    Abstract: A display device includes a substrate, a data conductive layer on the substrate and including a first voltage line, a via layer on the data conductive layer, a light emitting element on the via layer, a first contact electrode on the light emitting element and contacting a first end of the light emitting element, and a second contact electrode on the light emitting element and contacting a second end of the light emitting element, wherein the second contact electrode is electrically connected to the first voltage line through a first contact hole penetrating the via layer.
    Type: Application
    Filed: August 23, 2021
    Publication date: March 10, 2022
    Inventors: In Kyung YOO, Hee Na KIM, Chong Sup CHANG, Cha Dong KIM, Sang Jin LEE
  • Publication number: 20220045241
    Abstract: A display device includes: a first alignment electrode and a second alignment electrode on a substrate, the first and second alignment electrodes extending in a first direction and being spaced apart from each other; an amorphous silicon layer on the first alignment electrode and the second alignment electrode, the amorphous silicon layer having an insulating portion covering the first alignment electrode and an electrode portion covering the second alignment electrode, the electrode portion of the amorphous silicon layer including an N-type dopant; a light emitting element on the amorphous silicon layer, one end of the light emitting element being on the insulating portion and another end of the light emitting element contacting the electrode portion of the amorphous silicon layer; a first insulating layer on the light emitting element and extending in the first direction; and a first electrode contacting the one end of the light emitting element.
    Type: Application
    Filed: July 22, 2021
    Publication date: February 10, 2022
    Inventors: Hee Na KIM, Cha Dong KIM, In Kyung YOO, Sang Jin LEE, Chong Sup CHANG
  • Publication number: 20210399069
    Abstract: A display device includes a first substrate including a display area and a non-display area, first banks spaced apart from each other in the display area and in the non-display area on the first substrate, electrodes spaced apart from each other on the first banks in the display area, dummy electrodes spaced apart from each other on the first banks in the non-display area, a first pattern between the electrodes in the display area, a second pattern between the dummy electrodes in the non-display area, a first light emitting element on the first pattern, a second light emitting element on the second pattern, contact electrodes respectively on the electrodes in the display area to contact one end of the first light emitting element, and dummy contact electrodes respectively on the dummy electrodes in the non-display area to contact one end of the second light emitting element.
    Type: Application
    Filed: June 9, 2021
    Publication date: December 23, 2021
    Inventors: Cha Dong KIM, Hee Na KIM, In Kyung YOO, Sang Jin LEE, Chong Sup CHANG
  • Publication number: 20210359049
    Abstract: A display device includes a thin film transistor layer including at least one transistor on a substrate; a first electrode on the thin film transistor layer and connected to the at least one transistor; a second electrode spaced from the first electrode on the thin film transistor layer; a plurality of light emitting elements connected to the first electrode and the second electrode; and an electrode pattern on a same layer as the first electrode and the second electrode and overlapping the plurality of light emitting elements in a thickness direction.
    Type: Application
    Filed: April 15, 2021
    Publication date: November 18, 2021
    Inventors: Eui Kang HEO, Young Seok BAEK, Chong Sup CHANG
  • Publication number: 20210226166
    Abstract: A method of manufacturing a display device may include sequentially forming a first conductive layer, a second conductive layer including copper (Cu), a third conductive layer, and a fourth conductive layer on a substrate, patterning the first conductive layer, the second conductive layer, the third conductive layer, and the fourth conductive layer together to form a conductive pattern including a first layer, a second layer, a third layer, and a fourth layer sequentially on the substrate, removing the fourth layer of the conductive pattern, forming a protective layer covering at least a sidewall of the conductive layer on the substrate, and forming a display element on the protective layer.
    Type: Application
    Filed: October 22, 2020
    Publication date: July 22, 2021
    Inventors: Young Seok BAEK, Chong Sup CHANG, Hana SEO, Eui Kang HEO
  • Publication number: 20210217895
    Abstract: A thin film transistor according to an exemplary embodiment of the present invention includes an oxide semiconductor. A source electrode and a drain electrode face each other. The source electrode and the drain electrode are positioned at two opposite sides, respectively, of the oxide semiconductor. A low conductive region is positioned between the source electrode or the drain electrode and the oxide semiconductor. An insulating layer is positioned on the oxide semiconductor and the low conductive region. A gate electrode is positioned on the insulating layer. The insulating layer covers the oxide semiconductor and the low conductive region. A carrier concentration of the low conductive region is lower than a carrier concentration of the source electrode or the drain electrode.
    Type: Application
    Filed: December 8, 2020
    Publication date: July 15, 2021
    Inventors: Yong Su Lee, Yoon Ho Khang, Dong Jo Kim, Hyun Jae Na, Sang Ho Park, Se Hwan Yu, Chong Sup Chang, Dae Ho Kim, Jae Neung Kim, Myoung Geun Cha, Sang Gap Kim, Yu-Gwang Jeong
  • Publication number: 20210183826
    Abstract: A display device includes a substrate including a display area and a non-display area around the display area; and a display element layer on the substrate. The display element layer may include first and second electrodes extending in a first direction and spaced apart from each other in a second direction that is different from the first direction; a first light emitting element electrically coupled to the first and second electrodes; a first dummy electrode extending in the first direction and spaced apart from the first and second electrodes; second dummy electrodes spaced apart from each other in the first direction and spaced apart from the first electrode, the second electrode, and the first dummy electrode; and a second light emitting element electrically coupled to the first dummy electrode and the second dummy electrodes.
    Type: Application
    Filed: August 20, 2020
    Publication date: June 17, 2021
    Inventors: Chong Sup CHANG, Eui Kang HEO, Young Seok BAEK, Ha Na SEO
  • Publication number: 20210159250
    Abstract: A display includes a substrate, a first electrode base layer and a second electrode base layer spaced from each other on the substrate, a first electrode on the first electrode base layer and a second electrode on the second electrode base layer, a first inner bank between the first electrode base layer and the first electrode and a second inner bank between the second electrode base layer and the second electrode, and a light emitting element between the first electrode and the second electrode, at least one end portion of the light emitting element being electrically connected to the first electrode or the second electrode, wherein a side surface of one end portion of each of the first and second electrode base layers is at the same line as a side surface of an end portion of a corresponding one of the first and second electrodes.
    Type: Application
    Filed: September 14, 2020
    Publication date: May 27, 2021
    Inventors: Chong Sup CHANG, Eui Kang HEO, Young Seok BAEK, Ha Na SEO
  • Publication number: 20210159268
    Abstract: A display device includes a substrate, a first inner bank and a second inner bank on the substrate and spaced apart from each other, a first electrode on the first inner bank and a second electrode on the second inner bank, and a light emitting element between the first inner bank and the second inner bank, the light emitting element being electrically coupled to the first electrode and the second electrode, wherein the first inner bank comprises a first side surface facing the second inner bank, the second inner bank comprises a second side surface facing the first side surface, and the first side surface and the second side surface are respectively recessed into the first inner bank and the second inner bank, to have a curved shape.
    Type: Application
    Filed: August 21, 2020
    Publication date: May 27, 2021
    Inventors: Eui Kang HEO, Chong Sup CHANG
  • Publication number: 20210091050
    Abstract: A display device includes a first electrode and a second electrode disposed on a substrate and spaced apart from each other, a first light emitting element disposed between the first electrode and the second electrode, a second light emitting element disposed on the first electrode and spaced apart from the first light emitting element, and an insulating layer disposed on the first electrode and overlapping the second light emitting element. The insulating layer includes at least one contact hole which penetrates the insulating layer to expose a part of the first electrode.
    Type: Application
    Filed: June 30, 2020
    Publication date: March 25, 2021
    Applicant: Samsung Display Co., LTD.
    Inventors: Eui Kang HEO, Chong Sup CHANG
  • Publication number: 20210074769
    Abstract: A display device includes a first display substrate and a second display substrate. The first display substrate includes a first base, a first electrode disposed on the first base, a second electrode spaced apart from the first electrode, and a light emitting element disposed between the first electrode and the second electrode. The second display substrate faces the first display substrate and is configured to receive light emitted from the light emitting element. The second display substrate includes a second base, a first color filter disposed on a surface of the second base, and a first wavelength conversion pattern disposed on the first color filter. The first wavelength conversion pattern includes a first surface facing the first display substrate, and a second surface facing the first surface and the first color filter. The first surface includes a curved surface portion recessed toward the second surface.
    Type: Application
    Filed: June 18, 2020
    Publication date: March 11, 2021
    Inventors: Sang Jin PARK, Hyun Ae KIM, Hee Ra KIM, Ha Na SEO, Chong Sup CHANG, Eui Kang HEO