Patents by Inventor Sang Hee Yu

Sang Hee Yu 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: 12048220
    Abstract: A display device according to an embodiment includes a light emitting unit including a first light emitting diode to emit first blue light, a second light emitting diode to emit second blue light, the second blue light being different from the first blue light in central wavelength, and a quantum dot color conversion unit including a quantum dot color conversion layer on and overlapping the second light emitting diode.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: July 23, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Taek Joon Lee, Sang Hee Yu, Jae Jin Lyu, Seung Hee Jang, Baek Hee Lee, Jun Woo Lee
  • Publication number: 20240065095
    Abstract: Embodiments provide a composition for an electron transporting layer and a method for manufacturing a display device including the same. The composition includes inorganic particles, peroxide, a hydrocarbon compound, and a solvent. A method for manufacturing a display device includes forming a first electrode on a substrate, forming a light emitting layer on the first electrode, forming an electron transporting layer on the light emitting layer, and forming a second electrode on the electron transporting layer, wherein the electron transporting layer is formed of a composition for an electron transporting layer including inorganic particles, peroxide, a hydrocarbon compound, and a solvent.
    Type: Application
    Filed: March 10, 2023
    Publication date: February 22, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Sang Hee YU, Gyu Bong KIM, Hoi Lim KIM, Se Hun KIM, Ju Yon LEE
  • Patent number: 11871621
    Abstract: An embodiment of the present disclosure provides a display device including a substrate, a thin film transistor on the substrate, a first electrode electrically connected to the thin film transistor, a light emitting layer and a second electrode overlapping the first electrode, a first partition wall between the first electrode and the second electrode, and a second partition wall overlapping the first partition wall, wherein the first partition wall includes at least one of a black pigment and a black dye, wherein the second partition wall includes an organic insulating material, and wherein a portion of the second partition wall overlaps the first electrode.
    Type: Grant
    Filed: April 4, 2022
    Date of Patent: January 9, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Nak Cho Choi, Dae-Gi Kweon, Ji hee Kim, Kie Hyun Nam, Min Yeul Ryu, Sang Hee Yu, Jun Hee Lee, Da-young Jung
  • Publication number: 20230002313
    Abstract: A light emitting element according to an embodiment includes a first electrode, a second electrode overlapping the first electrode, an emission layer disposed between the first electrode and the second electrode, and an electron transport region disposed between the emission layer and the second electrode, wherein the electron transport region includes a thermal acid generator (TAG). A method of manufacturing a light emitting element is also provided.
    Type: Application
    Filed: June 9, 2022
    Publication date: January 5, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Sang Hee YU, Hoi-Lim KIM, Jae Hong PARK, Gyu Bong KIM, Seung Uk NOH, Ju Yon LEE
  • Publication number: 20220223670
    Abstract: An embodiment of the present disclosure provides a display device including a substrate, a thin film transistor on the substrate, a first electrode electrically connected to the thin film transistor, a light emitting layer and a second electrode overlapping the first electrode, a first partition wall between the first electrode and the second electrode, and a second partition wall overlapping the first partition wall, wherein the first partition wall includes at least one of a black pigment and a black dye, wherein the second partition wall includes an organic insulating material, and wherein a portion of the second partition wall overlaps the first electrode.
    Type: Application
    Filed: April 4, 2022
    Publication date: July 14, 2022
    Inventors: Nak Cho CHOI, Dae-Gi KWEON, Ji hee KIM, Kie Hyun NAM, Min Yeul RYU, Sang Hee YU, Jun Hee LEE, Da-young JUNG
  • Publication number: 20220190041
    Abstract: A display device according to an embodiment includes a light emitting unit including a first light emitting diode to emit first blue light, a second light emitting diode to emit second blue light, the second blue light being different from the first blue light in central wavelength, and a quantum dot color conversion unit including a quantum dot color conversion layer on and overlapping the second light emitting diode.
    Type: Application
    Filed: September 2, 2021
    Publication date: June 16, 2022
    Inventors: Taek Joon LEE, Sang Hee YU, Jae Jin LYU, Seung Hee JANG, Baek Hee LEE, Jun Woo LEE
  • Patent number: 11296159
    Abstract: An embodiment of the present disclosure provides a display device including a substrate, a thin film transistor on the substrate, a first electrode electrically connected to the thin film transistor, a light emitting layer and a second electrode overlapping the first electrode, a first partition wall between the first electrode and the second electrode, and a second partition wall overlapping the first partition wall, wherein the first partition wall includes at least one of a black pigment and a black dye, wherein the second partition wall includes an organic insulating material, and wherein a portion of the second partition wall overlaps the first electrode.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: April 5, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Nak Cho Choi, Dae-Gi Kweon, Ji hee Kim, Kie Hyun Nam, Min Yeul Ryu, Sang Hee Yu, Jun Hee Lee, Da-young Jung
  • Publication number: 20200328263
    Abstract: An embodiment of the present disclosure provides a display device including a substrate, a thin film transistor on the substrate, a first electrode electrically connected to the thin film transistor, a light emitting layer and a second electrode overlapping the first electrode, a first partition wall between the first electrode and the second electrode, and a second partition wall overlapping the first partition wall, wherein the first partition wall includes at least one of a black pigment and a black dye, wherein the second partition wall includes an organic insulating material, and wherein a portion of the second partition wall overlaps the first electrode.
    Type: Application
    Filed: January 6, 2020
    Publication date: October 15, 2020
    Inventors: Nak Cho CHOI, Dae-Gi KWEON, Ji hee KIM, Kie Hyun NAM, Min Yeul RYU, Sang Hee YU, Jun Hee LEE, Da-young JUNG
  • Patent number: 10591777
    Abstract: A display device comprising: a first substrate, a second substrate facing the first substrate, a color conversion layer disposed on one surface of the second substrate and including quantum dots; a first circular polarizer disposed on the color conversion layer and a second circular polarizer disposed on either one surface of the first substrate facing one surface of the second substrate or the other surface opposed to the one surface of the first substrate.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: March 17, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyung Guen Yoon, Jae Hong Park, Dong Han Song, Ji Yun Park, Sang Hee Yu, Kyung Seon Tak
  • Patent number: 10353234
    Abstract: A liquid crystal display is provided. A liquid crystal display comprising a first substrate which comprises a display area and a non-display area, a second substrate which faces the first substrate, a sealing member which is disposed in the non-display area between the first substrate and the second substrate, wherein the first substrate comprises a light-shielding pattern, a column spacer which is protruded from the light-shielding pattern toward the second substrate to maintain an interval between the first substrate and the second substrate, an opening which is disposed in the light-shielding pattern, and overlapping the sealing member.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: July 16, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Hee Yu, Byung Chul Kim, Won Gap Yoon, Jae Hong Park, Young Joo Jeon, Kyung Seon Tak
  • Patent number: 10338727
    Abstract: Present invention is related to a display device and a driving method thereof, and particularly, to a display device and a driving method thereof, which control an output timing of a scan signal output to gate lines by using two or more external start signals having different timings.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: July 2, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sang Hee Yu, Hun Jeoung, Sung Hyun Cho, Bo Sun Lee, Sung Wook Chang
  • Patent number: 10332467
    Abstract: Present invention relates to a display device and a driving method thereof. In particular, the present invention is to provide a display device and a driving method thereof, which block at least one of scan signals output from gate lines according to an enable signal.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: June 25, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Bo Sun Lee, Hun Jeoung, Sang Hee Yu, Sung Hyun Cho, Sung Wook Chang
  • Publication number: 20190041688
    Abstract: A liquid crystal display is provided. A liquid crystal display comprising a first substrate which comprises a display area and a non-display area, a second substrate which faces the first substrate, a sealing member which is disposed in the non-display area between the first substrate and the second substrate, wherein the first substrate comprises a light-shielding pattern, a column spacer which is protruded from the light-shielding pattern toward the second substrate to maintain an interval between the first substrate and the second substrate, an opening which is disposed in the light-shielding pattern, and overlapping the sealing member.
    Type: Application
    Filed: October 9, 2018
    Publication date: February 7, 2019
    Inventors: Sang Hee YU, Byung Chul KIM, Won Gap YOON, Jae Hong PARK, Young Joo JEON, Kyung Seon TAK
  • Patent number: 10126586
    Abstract: A liquid crystal display is provided. A liquid crystal display comprising a first substrate which comprises a display area and a non-display area, a second substrate which faces the first substrate, a sealing member which is disposed in the non-display area between the first substrate and the second substrate, wherein the first substrate comprises a light-shielding pattern, a column spacer which is protruded from the light-shielding pattern toward the second substrate to maintain an interval between the first substrate and the second substrate, an opening which is disposed in the light-shielding pattern, and overlapping the sealing member.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: November 13, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Hee Yu, Byung Chul Kim, Won Gap Yoon, Jae Hong Park, Young Joo Jeon, Kyung Seon Tak
  • Patent number: 9997112
    Abstract: Present invention is related to a display device and a driving method thereof. In particularly, the present invention is to provide a display device and a driving method thereof, in which a data driver driven at a low frequency which is capable of inverting a polarity of a data voltage in each frame.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: June 12, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hun Jeoung, Sang Hee Yu, Sung Hyun Cho, Bo Sun Lee, Sung Wook Chang
  • Publication number: 20180149913
    Abstract: A liquid crystal display is provided. A liquid crystal display comprising a first substrate which comprises a display area and a non-display area, a second substrate which faces the first substrate, a sealing member which is disposed in the non-display area between the first substrate and the second substrate, wherein the first substrate comprises a light-shielding pattern, a column spacer which is protruded from the light-shielding pattern toward the second substrate to maintain an interval between the first substrate and the second substrate, an opening which is disposed in the light-shielding pattern, and overlapping the sealing member.
    Type: Application
    Filed: January 26, 2018
    Publication date: May 31, 2018
    Inventors: Sang Hee YU, Byung Chul KIM, Won Gap YOON, Jae Hong PARK, Young Joo JEON, Kyung Seon TAK
  • Publication number: 20180081242
    Abstract: A display device comprising: a first substrate, a second substrate facing the first substrate, a color conversion layer disposed on one surface of the second substrate and including quantum dots; a first circular polarizer disposed on the color conversion layer and a second circular polarizer disposed on either one surface of the first substrate facing one surface of the second substrate or the other surface opposed to the one surface of the first substrate.
    Type: Application
    Filed: August 28, 2017
    Publication date: March 22, 2018
    Inventors: Hyung Guen YOON, Jae Hong PARK, Dong Han SONG, Ji Yun PARK, Sang Hee YU, Kyung Seon TAK
  • Patent number: 9910312
    Abstract: A liquid crystal display is provided. A liquid crystal display comprising a first substrate which comprises a display area and a non-display area, a second substrate which faces the first substrate, a sealing member which is disposed in the non-display area between the first substrate and the second substrate, wherein the first substrate comprises a light-shielding pattern, a column spacer which is protruded from the light-shielding pattern toward the second substrate to maintain an interval between the first substrate and the second substrate, an opening which is disposed in the light-shielding pattern, and overlapping the sealing member.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: March 6, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Hee Yu, Byung Chul Kim, Won Gap Yoon, Jae Hong Park, Young Joo Jeon, Kyung Seon Tak
  • Patent number: 9772532
    Abstract: Disclosed is an electrostatic discharge (ESD) protection circuit. The ESD protection circuit includes a transistor structure having at least five thin film transistors (TFTs), said transistor structure configured in view of changes in operating characteristics that depend on a channel length of a back channel etched (BCE) type oxide transistor.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: September 26, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Sang Woon Kim, Sang Hee Yu, Hoon Jeong
  • Publication number: 20170146834
    Abstract: A display device includes a first base substrate in which a display area and a non-display area are defined, a first common electrode on the first base substrate in the non-display area, a light-blocking member which is disposed on the first common electrode and in which an opening exposing a part of the first common electrode is defined, a second base substrate separated from the first base substrate and facing the first base substrate, and a sealing member which is interposed between the first base substrate and the second base substrate, is disposed in the non-display area, surrounds the display area, and overlaps at least a part of the first common electrode, where the sealing member includes at least one light-blocking sealant and at least one light-transmitting sealant stacked on each other, where the light-transmitting sealant has a lower optical density than that of the light-blocking sealant.
    Type: Application
    Filed: June 1, 2016
    Publication date: May 25, 2017
    Inventors: Kyung Seon TAK, Byung Chul KIM, Jae Hong PARK, Sang Hee YU, Won Gap YOON, Young Joo JEON