Patents by Inventor Jun-Chan CHOI

Jun-Chan CHOI 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: 12324095
    Abstract: Disclosed herein is a method of manufacturing an auxetic stretchable substrate with a flexible joint structure according to various embodiments of the present invention. The method includes preparing a substrate made of an elastic material, and forming an auxetic to form a plurality of first regions on the substrate, each of the plurality of first regions is a region in which a material constituting the auxetic is not printed, and at least some of the plurality of first regions have different lengths.
    Type: Grant
    Filed: January 23, 2023
    Date of Patent: June 3, 2025
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Seungjun Chung, Jun Chan Choi, Jae Hong Sun, Heesuk Kim, Jeong Gon Son, Phillip Lee
  • Patent number: 12251914
    Abstract: Provided is a method of manufacturing a stretchable substrate having improved thickness deformation uniformity through control of a spatial crosslinking degree according to various embodiments of the present disclosure to implement the above object. The method includes forming a substrate part of an elastic material, forming an auxetic including a plurality of unit structures on the substrate part, and forming a fixing part on the substrate part on which the auxetic is formed, wherein the fixing part has a different vertical crosslinking density at each position.
    Type: Grant
    Filed: September 14, 2023
    Date of Patent: March 18, 2025
    Assignee: Korea Institute of Science and Technology
    Inventors: Seungjun Chung, Jun Chan Choi, Hoon Yeub Jeong, Phillip Lee, Jeong Gon Son, Heesuk Kim
  • Publication number: 20250026101
    Abstract: Provided is a method of manufacturing a stretchable substrate having improved stretching deformation uniformity through control of a spatial crosslinking degree according to various embodiments of the present disclosure to implement the above object. The method includes forming a substrate part of an elastic material, forming an auxetic including a plurality of unit structures on the substrate part, and forming a fixing part on the substrate part on which the auxetic is formed, wherein the fixing part has a different crosslinking density in each region.
    Type: Application
    Filed: September 14, 2023
    Publication date: January 23, 2025
    Applicant: Korea Institute of Science and Technology
    Inventors: Seungjun CHUNG, Jun Chan CHOI, Hoon Yeub JEONG, Jeong Gon SON, Heesuk KIM, Phillip LEE
  • Publication number: 20250026102
    Abstract: Provided is a method of manufacturing a stretchable substrate having improved thickness deformation uniformity through control of a spatial crosslinking degree according to various embodiments of the present disclosure to implement the above object. The method includes forming a substrate part of an elastic material, forming an auxetic including a plurality of unit structures on the substrate part, and forming a fixing part on the substrate part on which the auxetic is formed, wherein the fixing part has a different vertical crosslinking density at each position.
    Type: Application
    Filed: September 14, 2023
    Publication date: January 23, 2025
    Applicant: Korea Institute of Science and Technology
    Inventors: Seungjun CHUNG, Jun Chan CHOI, Hoon Yeub JEONG, Phillip LEE, Jeong Gon SON, Heesuk KIM
  • Publication number: 20240179838
    Abstract: Disclosed herein is a method of manufacturing an auxetic stretchable substrate with a flexible joint structure according to various embodiments of the present invention. The method includes preparing a substrate made of an elastic material, and forming an auxetic to form a plurality of first regions on the substrate, each of the plurality of first regions is a region in which a material constituting the auxetic is not printed, and at least some of the plurality of first regions have different lengths.
    Type: Application
    Filed: January 23, 2023
    Publication date: May 30, 2024
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Seungjun CHUNG, Jun Chan CHOI, Jae Hong SUN, Heesuk KIM, Jeong Gon SON, Phillip LEE
  • Publication number: 20240173901
    Abstract: Disclosed herein is a method of manufacturing an auxetic stretchable substrate with a flexible joint structure. The method includes preparing a substrate made of an elastic material, forming an auxetic to form a plurality of first regions on the substrate, and forming flexible joints in each of the plurality of first regions, wherein each of the plurality of first regions is a region in which a material constituting the auxetic is not printed, and at least some of the flexible joints formed in each of the plurality of first regions have different Young's moduli.
    Type: Application
    Filed: January 18, 2023
    Publication date: May 30, 2024
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Seungjun CHUNG, Jun Chan CHOI, Phillip LEE, Jeong Gon SON, Jae Hong KIM, Heesuk KIM, Tae Ann KIM
  • Patent number: 10497487
    Abstract: In a transparent electrode based on a metal material having reduced light reflectance, a light absorbing layer having black characteristic is formed on a lower surface, a partition wall, and/or an upper surface of a metal wire, and thus, light reflectance of transparent electrode is minimized. In a method of manufacturing a transparent electrode, the light absorbing layer can be selectively formed on the upper and lower surfaces and the partition wall of the metal wire having a fine line width by using self-aligning and a spontaneous pattern effect. A conductive wire is implemented by using an imprinting process using an elastic body-based stamp, and thus, conductive wires having a fine line width and an excellent aspect ratio can be formed, so that it is possible to improve electric conductivity and transmittance.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: December 3, 2019
    Assignee: KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Hak-Rin Kim, Ji-Sub Park, Jun-Chan Choi
  • Patent number: 10403415
    Abstract: In a transparent electrode based on a metal material having reduced light reflectance, a light absorbing layer having black characteristic is formed on a lower surface, a partition wall, and/or an upper surface of a metal wire, and thus, light reflectance of transparent electrode is minimized. In a method of manufacturing a transparent electrode, the light absorbing layer can be selectively formed on the upper and lower surfaces and the partition wall of the metal wire having a fine line width by using self-aligning and a spontaneous pattern effect. A conductive wire is implemented by using an imprinting process using an elastic body-based stamp, and thus, conductive wires having a fine line width and an excellent aspect ratio can be formed, so that it is possible to improve electric conductivity and transmittance.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: September 3, 2019
    Assignee: KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Hak-Rin Kim, Ji-Sub Park, Jun-Chan Choi
  • Publication number: 20170199593
    Abstract: In a transparent electrode based on a metal material having reduced light reflectance, a light absorbing layer having black characteristic is formed on a lower surface, a partition wall, and/or an upper surface of a metal wire, and thus, light reflectance of transparent electrode is minimized. In a method of manufacturing a transparent electrode, the light absorbing layer can be selectively formed on the upper and lower surfaces and the partition wall of the metal wire having a fine line width by using self-aligning and a spontaneous pattern effect. A conductive wire is implemented by using an imprinting process using an elastic body-based stamp, and thus, conductive wires having a fine line width and an excellent aspect ratio can be formed, so that it is possible to improve electric conductivity and transmittance.
    Type: Application
    Filed: March 29, 2017
    Publication date: July 13, 2017
    Inventors: Hak-Rin KIM, Ji-Sub PARK, Jun-Chan CHOI
  • Publication number: 20170200525
    Abstract: In a transparent electrode based on a metal material having reduced light reflectance, a light absorbing layer having black characteristic is formed on a lower surface, a partition wall, and/or an upper surface of a metal wire, and thus, light reflectance of transparent electrode is minimized. In a method of manufacturing a transparent electrode, the light absorbing layer can be selectively formed on the upper and lower surfaces and the partition wall of the metal wire having a fine line width by using self-aligning and a spontaneous pattern effect. A conductive wire is implemented by using an imprinting process using an elastic body-based stamp, and thus, conductive wires having a fine line width and an excellent aspect ratio can be formed, so that it is possible to improve electric conductivity and transmittance.
    Type: Application
    Filed: March 29, 2017
    Publication date: July 13, 2017
    Inventors: Hak-Rin KIM, Ji-Sub PARK, Jun-Chan CHOI