Patents by Inventor Dae-Guen Choi

Dae-Guen 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: 12327661
    Abstract: A transparent conductor according to an exemplary embodiment of the present invention includes a transparent substrate, and a transparent conductive pattern formed on the transparent substrate, and the transparent conductor includes a nanostructure on an upper surface of at least one of the transparent substrate and the transparent conductive pattern.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: June 10, 2025
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Dae-Guen Choi, Hyuk Jun Kang, Ji Hye Lee, Junhyuk Choi, Won Seok Chang, Joo Yun Jung, Jun-ho Jeong
  • Publication number: 20240145118
    Abstract: A transparent conductor according to an exemplary embodiment of the present invention includes a transparent substrate, and a transparent conductive pattern formed on the transparent substrate, and the transparent conductor includes a nanostructure on an upper surface of at least one of the transparent substrate and the transparent conductive pattern.
    Type: Application
    Filed: March 17, 2021
    Publication date: May 2, 2024
    Inventors: Dae-Guen CHOI, Hyuk Jun KANG, Ji Hye LEE, Junhyuk CHOI, Won Seok CHANG, Joo Yun JUNG, Jun-ho JEONG
  • Patent number: 11307613
    Abstract: A display device is provided.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: April 19, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Young Yu, Yong Gi Ko, Bon Joo Koo, Yun Ha Kim, Jae Chun Park, Nam Seok Baik, Mikiya Itakura, Hyoung Jin Lee, Dae Guen Choi, Sung Chul Choi
  • Publication number: 20210268111
    Abstract: A nucleic acid film fabrication method, includes: a mixing step in which a nucleic acid is added in powder form to distilled water or deionized water to prepare a mixed solution; a stirring step in which the mixed solution is stirred; a mixed solution application step in which the mixed solution is applied to a mold corresponding in shape to a final product of a nucleic acid film; and a drying step in which the mixed solution applied to the mold is dried to be formed into the nucleic acid film, wherein the mold has a groove formed thereon in a thickness direction thereof, such that the nucleic acid film passing through the drying step has a protrusion protruding from one surface thereof toward human skin to correspond to the groove.
    Type: Application
    Filed: May 18, 2021
    Publication date: September 2, 2021
    Applicant: ADMBIOSCIENCE INC.
    Inventors: Jun-ho JEONG, Yun Woo LEE, So Hee JEON, Junhyuk CHOI, Dae-Guen CHOI, Ji Hye LEE, Joo Yun JUNG
  • Patent number: 11040103
    Abstract: A nucleic acid film fabrication method, includes: a mixing step in which a nucleic acid is added in powder form to distilled water or deionized water to prepare a mixed solution; a stirring step in which the mixed solution is stirred; a mixed solution application step in which the mixed solution is applied to a mold corresponding in shape to a final product of a nucleic acid film; and a drying step in which the mixed solution applied to the mold is dried to be formed into the nucleic acid film, wherein the mold has a groove formed thereon in a thickness direction thereof, such that the nucleic acid film passing through the drying step has a protrusion protruding from one surface thereof toward human skin to correspond to the groove.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: June 22, 2021
    Assignee: ADMBIOSCIENCE INC.
    Inventors: Jun-ho Jeong, Yun Woo Lee, So Hee Jeon, Junhyuk Choi, Dae-Guen Choi, Ji Hye Lee, Joo Yun Jung
  • Patent number: 10971560
    Abstract: Disclosed herein are a display device, an apparatus for testing a display device, and a method for testing a display device. A display device includes a first substrate having a display area and a non-display area defined thereon, the non-display area being on an outer side of the display area. The non-display area may include a plurality of test pads and a first dummy thin-film transistor electrically connected to the test pads. The first dummy thin-film transistor includes a dummy gate electrode, and a dummy source electrode and a dummy drain electrode insulated from the gate electrode and spaced apart from each other. A bending area is defined on the first substrate that at least partially traverses the display area and the non-display area, the bending area overlaps the first dummy thin-film transistor.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: April 6, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyo Jung Kim, June Hwan Kim, Jong Woo Park, Dae Guen Choi, Jae Sik Son, Young Tae Choi
  • Publication number: 20210072791
    Abstract: A display device is provided.
    Type: Application
    Filed: November 16, 2020
    Publication date: March 11, 2021
    Inventors: Jae Young YU, Yong Gi KO, Bon Joo KOO, Yun Ha KIM, Jae Chun PARK, Nam Seok BAIK, Mikiya ITAKURA, Hyoung Jin LEE, Dae Guen CHOI, Sung Chul CHOI
  • Patent number: 10838457
    Abstract: A display device is provided.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: November 17, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Young Yu, Yong Gi Ko, Bon Joo Koo, Yun Ha Kim, Jae Chun Park, Nam Seok Baik, Mikiya Itakura, Hyoung Jin Lee, Dae Guen Choi, Sung Chul Choi
  • Patent number: 10730233
    Abstract: A method for manufacturing a three-dimensional structure through nano-imprinting, includes: a stamp preparation step in which a stamp formed with a convex-concave portion corresponding to a pattern of functional layers to be formed is prepared; a material formation step in which at least one material for forming the functional layers is formed to a thickness of several to dozens of nanometers on the convex-concave portion; a material stacking step in which the material formed on the convex-concave portion is stacked on a substrate; and a functional layer securing step in which the material is cured by applying pressure, heat and pressure, or light and pressure thereto such that the material can be converted into the functional layers.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: August 4, 2020
    Assignee: ADMBIOSCIENCE INC.
    Inventors: Jun-ho Jeong, So Hee Jeon, Junhyuk Choi, Dae-Guen Choi, Ji Hye Lee, Joo Yun Jung, Eung-Sug Lee
  • Publication number: 20200225699
    Abstract: A display device is provided.
    Type: Application
    Filed: January 15, 2020
    Publication date: July 16, 2020
    Inventors: Jae Young YU, Yong Gi KO, Bon Joo KOO, Yun Ha KIM, Jae Chun PARK, Nam Seok BAIK, Mikiya ITAKURA, Hyoung Jin LEE, Dae Guen CHOI, Sung Chul CHOI
  • Publication number: 20190348478
    Abstract: Disclosed herein are a display device, an apparatus for testing a display device, and a method for testing a display device. A display device includes a first substrate having a display area and a non-display area defined thereon, the non-display area being on an outer side of the display area. The non-display area may include a plurality of test pads and a first dummy thin-film transistor electrically connected to the test pads. The first dummy thin-film transistor includes a dummy gate electrode, and a dummy source electrode and a dummy drain electrode insulated from the gate electrode and spaced apart from each other. A bending area is defined on the first substrate that at least partially traverses the display area and the non-display area, the bending area overlaps the first dummy thin-film transistor.
    Type: Application
    Filed: May 6, 2019
    Publication date: November 14, 2019
    Inventors: Hyo Jung KIM, June Hwan KIM, Jong Woo PARK, Dae Guen CHOI, Jae Sik SON, Young Tae CHOI
  • Publication number: 20190125876
    Abstract: A nucleic acid film fabrication method, includes: a mixing step in which a nucleic acid is added in powder form to distilled water or deionized water to prepare a mixed solution; a stirring step in which the mixed solution is stirred; a mixed solution application step in which the mixed solution is applied to a mold corresponding in shape to a final product of a nucleic acid film; and a drying step in which the mixed solution applied to the mold is dried to be formed into the nucleic acid film, wherein the mold has a groove formed thereon in a thickness direction thereof, such that the nucleic acid film passing through the drying step has a protrusion protruding from one surface thereof toward human skin to correspond to the groove.
    Type: Application
    Filed: April 14, 2017
    Publication date: May 2, 2019
    Applicant: ADMBIOSCIENCE INC.
    Inventors: Jun-ho JEONG, Yun Woo LEE, So Hee JEON, Junhyuk CHOI, Dae-Guen CHOI, Ji Hye LEE, Joo Yun JUNG
  • Publication number: 20190070775
    Abstract: A method for manufacturing a three-dimensional structure through nano-imprinting, includes: a stamp preparation step in which a stamp formed with a convex-concave portion corresponding to a pattern of functional layers to be formed is prepared; a material formation step in which at least one material for forming the functional layers is formed to a thickness of several to dozens of nanometers on the convex-concave portion; a material stacking step in which the material formed on the convex-concave portion is stacked on a substrate; and a functional layer securing step in which the material is cured by applying pressure, heat and pressure, or light and pressure thereto such that the material can be converted into the functional layers.
    Type: Application
    Filed: April 14, 2017
    Publication date: March 7, 2019
    Applicant: ADMBIOSCIENCE INC.
    Inventors: Jun-ho JEONG, So Hee JEON, Junhyuk CHOI, Dae-Guen CHOI, Ji Hye LEE, Joo Yun JUNG, Eung-Sug LEE
  • Patent number: 9791601
    Abstract: In a method for fabricating an embedded pattern using a transfer-based imprinting, an adhesive layer is formed on a substrate. The adhesive layer has a photo curable resin. A stamp having a protruded pattern is prepared. A thin-film layer is formed on an outer surface of the protruded pattern of the stamp. The stamp having the thin-film layer contact with the adhesive layer is pressed to selectively transfer the thin-film layer of the protruded pattern to the adhesive layer. Ultraviolet rays (UV) are irradiated to cure the adhesive layer. The stamp is removed.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: October 17, 2017
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Jun-Hyuk Choi, Eung-Sug Lee, Ji-Hye Lee, Jun-ho Jeong, Joo-Yun Jung, Dae-Guen Choi, Cheol-Hyeon Kim
  • Patent number: 9638851
    Abstract: A method of manufacturing a wire grid polarizer includes: preparing a stamp having a nanostructure body at one surface and forming a mask layer with anisotropic vapor deposition at the one surface; forming a metal film on a substrate; transferring a mask layer of an upper portion of a nanostructure body in the mask layer onto the metal film; and patterning the metal film into metal lines by removing a portion that is not covered with the mask layer in the metal film with dry etching.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: May 2, 2017
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Jun-Ho Jeong, Junhyuk Choi, Dae-Guen Choi, So Hee Jeon, Ji Hye Lee, Joo Yun Jung, Soon-Hyoung Hwang, Sang Keun Sung
  • Patent number: 9598617
    Abstract: Disclosed is an acrylate based adhesive composition for optical use that includes: a copolymer prepared by polymerizing an alkyl (meth)acrylate (wherein the alkyl is a C16 to C22 linear alkyl group) in an amount of about 1 to about 10 parts by weight, an alkyl (meth)acrylate (wherein the alkyl is a C1 to C12 alkyl group) in an amount of about 70 to about 98 parts by weight, and a polar monomer in an amount of about 1 to about 20 parts by weight; and a cross-linking agent. The cross-linking agent is included in an amount of about 0.5 to 5 parts by weight based on 100 parts by weight of the copolymer.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: March 21, 2017
    Assignees: Samsung Display Co., Ltd., NITTA CORPORATION
    Inventors: Dong-Sun Lee, Sang-Hyun Lim, Dae-Guen Choi, Hak-Sun Kim, Shinichiro Kawahara, Minoru Nanchi, Keisuke Sako, Yuta Irie, Satoshi Yamaguchi
  • Publication number: 20170075051
    Abstract: A method of manufacturing a wire grid polarizer includes: preparing a stamp having a nanostructure body at one surface and forming a mask layer with anisotropic vapor deposition at the one surface; forming a metal film on a substrate; transferring a mask layer of an upper portion of a nanostructure body in the mask layer onto the metal film; and patterning the metal film into metal lines by removing a portion that is not covered with the mask layer in the metal film with dry etching.
    Type: Application
    Filed: December 4, 2015
    Publication date: March 16, 2017
    Inventors: Jun-Ho JEONG, Junhyuk Choi, Dae-Guen Choi, So Hee Jeon, Ji Hye Lee, Joo Yun Jung, Soon-Hyoung Hwang, Sang Keun Sung
  • Patent number: 9581746
    Abstract: A method of manufacturing a wire grid polarizer includes: preparing a stamp having a nanostructure body at one surface and forming a mask layer with anisotropic vapor deposition at the one surface; forming a metal film on a substrate; transferring a mask layer of an upper portion of a nanostructure body in the mask layer onto the metal film; and patterning the metal film into metal lines by removing a portion that is not covered with the mask layer in the metal film with dry etching.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: February 28, 2017
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Jun-Ho Jeong, Junhyuk Choi, Dae-Guen Choi, So Hee Jeon, Ji Hye Lee, Joo Yun Jung, Soon-Hyoung Hwang, Sang Keun Sung
  • Patent number: 9362526
    Abstract: A display device includes a substrate, a device layer on a front side of the substrate, and a protection sheet on a rear side of the substrate opposite to the front side of the substrate. The protection sheet comprises polytetrafluoroethylene.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: June 7, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin Gab Beom, Dae Guen Choi
  • Publication number: 20160145474
    Abstract: Disclosed is an acrylate based adhesive composition for optical use that includes: a copolymer prepared by polymerizing an alkyl (meth)acrylate (wherein the alkyl is a C16 to C22 linear alkyl group) in an amount of about 1 to about 10 parts by weight, an alkyl (meth)acrylate (wherein the alkyl is a C1 to C12 alkyl group) in an amount of about 70 to about 98 parts by weight, and a polar monomer in an amount of about 1 to about 20 parts by weight; and a cross-linking agent. The cross-linking agent is included in an amount of about 0.5 to 5 parts by weight based on 100 parts by weight of the copolymer.
    Type: Application
    Filed: December 1, 2015
    Publication date: May 26, 2016
    Inventors: Dong-Sun Lee, Sang-Hyun Lim, Dae-Guen Choi, Hak-Sun Kim, Shinichiro Kawahara, Minoru Nanchi, Keisuke Sako, Yuta lrie, Satoshi Yamaguchi