Patents by Inventor Dong Ki KEUM

Dong Ki KEUM 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: 20240128304
    Abstract: A method for manufacturing an LED lighting device includes forming a separation film on a substrate, patterning the separation film, forming LEDs on the separation film, bonding a stretch film to top surfaces of the LEDs and spacing between the LEDs, separating the separation film from the substrate, stretching the stretch film, exposing the top surfaces of the LEDs, and forming electrodes on the top surfaces of the LEDs, and a bottom surface of the separation film or bottom surfaces of the LEDs.
    Type: Application
    Filed: February 24, 2022
    Publication date: April 18, 2024
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Byoungin KIM, Dong Ki KEUM, Jin LEE
  • Patent number: 11360612
    Abstract: Provided is a conductive pattern having at least one unit conductive pattern forming one touch pixel according to an aspect of the present invention. The at least one unit conductive pattern includes a plurality of nanostructures each having opposite ends. A ratio of nanostructures, both opposite ends of which are in contact with edges of the at least one unit conductive pattern to all nanostructures included in the at least one unit conductive pattern is 70% or more.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: June 14, 2022
    Assignee: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Byung Hoon Song, Dong Ki Keum, Dae Chul Park, Sun Young Song, Hwansil Jang
  • Publication number: 20220123244
    Abstract: A transparent electrode structure according to an embodiment of the present invention includes a transparent substrate, a transparent electrode layer disposed on the transparent substrate and including a multi-layered structure of a transparent oxide electrode layer and a metal layer, and a barrier structure disposed between the transparent substrate and the transparent electrode layer and including at least one barrier material of an aluminum oxide-zinc oxide composite (AlZO) material, silazane, siloxane or a silicon-containing inorganic material. Electrical, optical and chemical stability may be improved by a combination of the transparent electrode layer and the barrier structure.
    Type: Application
    Filed: January 3, 2022
    Publication date: April 21, 2022
    Inventors: Han Tae RYU, Dong Ki KEUM, Myeong Won LEE
  • Patent number: 11011281
    Abstract: A conductive sheet according to an aspect of the present invention includes a first nanostructure and a second nanostructure disposed to intersect each other. A thickness of an intersect region of the first nanostructure and the second nanostructure is 0.6 to 0.9 times the sum of thicknesses of non-intersection regions of the first nanostructure and the second nanostructure.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: May 18, 2021
    Assignee: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Byung Hoon Song, Dong Ki Keum, Dae Chul Park
  • Publication number: 20210089151
    Abstract: Provided is a conductive pattern having at least one unit conductive pattern forming one touch pixel according to an aspect of the present invention. The at least one unit conductive pattern includes a plurality of nanostructures each having opposite ends. A ratio of nanostructures, both opposite ends of which are in contact with edges of the at least one unit conductive pattern to all nanostructures included in the at least one unit conductive pattern is 70% or more.
    Type: Application
    Filed: December 1, 2020
    Publication date: March 25, 2021
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Byung Hoon SONG, Dong Ki KEUM, Dae Chul PARK, Sun Young SONG, Hwansil JANG
  • Patent number: 10884555
    Abstract: Provided is a conductive pattern having at least one unit conductive pattern forming one touch pixel according to an aspect of the present invention. The at least one unit conductive pattern includes a plurality of nanostructures each having opposite ends. A ratio of nanostructures, both opposite ends of which are in contact with edges of the at least one unit conductive pattern to all nanostructures included in the at least one unit conductive pattern is 70% or more.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: January 5, 2021
    Assignee: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Byung Hoon Song, Dong Ki Keum, Dae Chul Park, Sun Young Song, Hwansil Jang
  • Publication number: 20190377439
    Abstract: A conductive sheet according to an aspect of the present invention includes a first nanostructure and a second nanostructure disposed to intersect each other. A thickness of an intersect region of the first nanostructure and the second nanostructure is 0.6 to 0.9 times the sum of thicknesses of non-intersection regions of the first nanostructure and the second nanostructure.
    Type: Application
    Filed: August 22, 2019
    Publication date: December 12, 2019
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Byung Hoon SONG, Dong Ki KEUM, Dae Chul PARK
  • Patent number: 10437112
    Abstract: A transparent electrode includes a first metal oxide layer, a metal layer and a second metal oxide layer. The first metal oxide layer, the metal layer and the second metal oxide layer are sequentially stacked to form a mesh pattern. A reflectivity at a wavelength of 550 nm of the mesh pattern is in a range from 5% to 20%.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: October 8, 2019
    Assignee: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Euk Kun Yoon, Sung Jin Noh, Han Tae Ryu, Dong Ki Keum, Min Soo Seo, Eung Goo Cho
  • Patent number: 10430003
    Abstract: A conductive sheet according to an aspect of the present invention includes a first nanostructure and a second nanostructure disposed to intersect each other. A thickness of an intersect region of the first nanostructure and the second nanostructure is 0.6 to 0.9 times the sum of thicknesses of non-intersection regions of the first nanostructure and the second nanostructure.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: October 1, 2019
    Assignee: DONGWOO FINE-CHEM CO.. LTD.
    Inventors: Byung Hoon Song, Dong Ki Keum, Dae Chul Park
  • Publication number: 20190095025
    Abstract: The present invention relates to a force touch sensor and a manufacturing method thereof. The force touch sensor according to the present invention includes a lower electrode layer bonded to a display, an upper electrode layer bonded to a polarizing plate, and a transparent dielectric layer bonded to the lower electrode layer and the upper electrode layer. According to the present invention, thin film characteristics and flexible characteristics may be improved, manufacturing costs and manufacturing time may be reduced, and manufacturing processes may be simplified and product yield may be improved by simplifying functional layers constituting the force touch sensor.
    Type: Application
    Filed: September 20, 2018
    Publication date: March 28, 2019
    Inventors: Dong Ki Keum, Ji Yeon Kim, Gwang Yong Tak
  • Publication number: 20180046005
    Abstract: A transparent electrode includes a first metal oxide layer, a metal layer and a second metal oxide layer. The first metal oxide layer, the metal layer and the second metal oxide layer are sequentially stacked to form a mesh pattern. A reflectivity at a wavelength of 550 nm of the mesh pattern is in a range from 5% to 20%.
    Type: Application
    Filed: July 27, 2017
    Publication date: February 15, 2018
    Inventors: Euk Kun YOON, Sung Jin NOH, Han Tae RYU, Dong Ki KEUM, Min Soo SEO, Eung Goo CHO
  • Publication number: 20180024671
    Abstract: Provided is a conductive pattern having at least one unit conductive pattern forming one touch pixel according to an aspect of the present invention. The at least one unit conductive pattern includes a plurality of nanostructures each having opposite ends. A ratio of nanostructures, both opposite ends of which are in contact with edges of the at least one unit conductive pattern to all nanostructures included in the at least one unit conductive pattern is 70% or more.
    Type: Application
    Filed: February 5, 2016
    Publication date: January 25, 2018
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Byung Hoon SONG, Dong Ki KEUM, Dae Chul PARK, Sun Young SONG, Hwansil JANG
  • Publication number: 20180018040
    Abstract: A conductive sheet according to an aspect of the present invention includes a first nanostructure and a second nanostructure disposed to intersect each other. A thickness of an intersect region of the first nanostructure and the second nanostructure is 0.6 to 0.9 times the sum of thicknesses of non-intersection regions of the first nanostructure and the second nanostructure.
    Type: Application
    Filed: February 5, 2016
    Publication date: January 18, 2018
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Byung Hoon SONG, Dong Ki KEUM, Dae Chul PARK