Patents by Inventor EUNHO OH

EUNHO OH 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: 11848303
    Abstract: The present disclosure provides a method of transferring an electronic element using a stamping and magnetic field alignment technology and an electronic device including an electronic element transferred using the method. In the present disclosure, a polymer may be simultaneously coated on a plurality of electronic elements using the stamping process, and the polymer may be actively coated on the electronic elements without restrictions on process parameters such as size and spacing of the electronic elements. Moreover, the self-aligned ferromagnetic particles have an anisotropic current flow through which current flows only in the aligned direction. Therefore, the current may flow only vertically between the electronic element and the electrode, and there is no electrical short circuit between a peripheral LED element and the electrode.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: December 19, 2023
    Assignee: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Yongtaek Hong, Hyungsoo Yoon, Eunho Oh, Byeongmoon Lee, Sujin Jeong
  • Publication number: 20230214044
    Abstract: A pressure sensor includes: a first substrate; a second substrate having an inner surface and a touch surface that is opposite to the inner surface, wherein the inner surface faces the first substrate with a resistance sensing space therebetween; a first electrode and a second electrode, which are arranged spaced apart from each other in the resistance sensing space; and a piezoresistive pattern arranged between the first electrode and the second electrode and disposed in the resistance sensing space, wherein the piezoresistive pattern includes a porous elastic support and a plurality of conductive carbon structures dispersed in the porous elastic support.
    Type: Application
    Filed: December 7, 2022
    Publication date: July 6, 2023
    Applicant: Seoul National University R&DB Foundation
    Inventors: Yongtaek HONG, Daesik Kim, Eunho Oh, Byeongmoon Lee
  • Publication number: 20220271004
    Abstract: The present disclosure provides a method of transferring an electronic element using a stamping and magnetic field alignment technology and an electronic device including an electronic element transferred using the method. In the present disclosure, a polymer may be simultaneously coated on a plurality of electronic elements using the stamping process, and the polymer may be actively coated on the electronic elements without restrictions on process parameters such as size and spacing of the electronic elements. Moreover, the self-aligned ferromagnetic particles have an anisotropic current flow through which current flows only in the aligned direction. Therefore, the current may flow only vertically between the electronic element and the electrode, and there is no electrical short circuit between a peripheral LED element and the electrode.
    Type: Application
    Filed: May 13, 2022
    Publication date: August 25, 2022
    Inventors: Yongtaek HONG, Hyungsoo YOON, Eunho OH, Byeongmoon LEE, Sujin JEONG
  • Patent number: 11284509
    Abstract: Disclosed is a stretchable substrate including: a via configured to provide an electrical connection between one surface and the other surface of the stretchable substrate; and a buffer shell positioned between the via and the stretchable substrate and having a Young's modulus value that is greater than a Young's modulus value of the stretchable substrate and smaller than a Young's modulus value of the via.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: March 22, 2022
    Assignee: Seoul National University R&DB Foundation
    Inventors: Yongtaek Hong, Eunho Oh, Junghwan Byun, Byeongmoon Lee
  • Publication number: 20220059496
    Abstract: The present disclosure provides a method of transferring an electronic element using a stamping and magnetic field alignment technology and an electronic device including an electronic element transferred using the method. In the present disclosure, a polymer may be simultaneously coated on a plurality of electronic elements using the stamping process, and the polymer may be actively coated on the electronic elements without restrictions on process parameters such as size and spacing of the electronic elements. Moreover, the self-aligned ferromagnetic particles have an anisotropic current flow through which current flows only in the aligned direction. Therefore, the current may flow only vertically between the electronic element and the electrode, and there is no electrical short circuit between a peripheral LED element and the electrode.
    Type: Application
    Filed: August 18, 2020
    Publication date: February 24, 2022
    Inventors: Yongtaek HONG, Hyungsoo YOON, Eunho OH, Byeongmoon LEE, Sujin JEONG
  • Publication number: 20210105895
    Abstract: Disclosed is a stretchable substrate including: a via configured to provide an electrical connection between one surface and the other surface of the stretchable substrate; and a buffer shell positioned between the via and the stretchable substrate and having a Young's modulus value that is greater than a Young's modulus value of the stretchable substrate and smaller than a Young's modulus value of the via.
    Type: Application
    Filed: December 16, 2020
    Publication date: April 8, 2021
    Applicant: Seoul National University R&DB Foundation
    Inventors: Yongtaek HONG, Eunho OH, Junghwan BYUN, Byeongmoon LEE
  • Patent number: 10905002
    Abstract: A method for forming a flexible substrate having a via, according to the present embodiment, comprises the steps of: (a) arranging a mixture of conductive particles moving by means of a magnetic field, when a curable resin and the magnetic field are provided; (b) forming a material layer being cured and having flexibility; (c) arranging the conductive particles by providing a magnetic field; and (d) curing the curable resin and the material layer.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: January 26, 2021
    Assignee: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Yongtaek Hong, Eunho Oh, Junghwan Byun, Byeongmoon Lee
  • Publication number: 20190380199
    Abstract: A method for forming a flexible substrate having a via, according to the present embodiment, comprises the steps of: (a) arranging a mixture of conductive particles moving by means of a magnetic field, when a curable resin and the magnetic field are provided; (b) forming a material layer being cured and having flexibility; (c) arranging the conductive particles by providing a magnetic field; and (d) curing the curable resin and the material layer.
    Type: Application
    Filed: September 22, 2017
    Publication date: December 12, 2019
    Inventors: YONGTAEK HONG, EUNHO OH, Junghwan Byun, Byeongmoon Lee