Patents by Inventor Chang Kun Kim

Chang Kun Kim 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).

  • Optical film and manufacturing method thereof, liquid cristal display apparatus using the optical film
    Patent number: 9182523
    Abstract: An optical sheet having a single sheet structure for an edge-lighting backlight unit using a printless light guide plate, a method of manufacturing the same, and a liquid crystal display apparatus using the same are provided. The optical sheet having a single sheet structure includes a first prism sheet having a prism pattern formed on the upper surface thereof, and a second prism sheet having a prism pattern formed on the upper surface thereof. Further, prism ridges of the first prism sheet are attached to the bottom surface of the second prism sheet by means of an adhesive so that the prism pattern of the first prism sheet and the prism pattern of the second prism sheet are directed in the same direction.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: November 10, 2015
    Assignee: GLOTEC CO., LTD
    Inventors: Gi Suk Sung, Chang Kun Kim
  • OPTICAL FILM AND MANUFACTURING METHOD THEREOF, LIQUID CRISTAL DISPLAY APPARATUS USING THE OPTICAL FILM
    Publication number: 20130010234
    Abstract: An optical sheet having a single sheet structure for an edge-lighting backlight unit using a printless light guide plate, a method of manufacturing the same, and a liquid crystal display apparatus using the same are provided. The optical sheet having a single sheet structure includes a first prism sheet having a prism pattern formed on the upper surface thereof, and a second prism sheet having a prism pattern formed on the upper surface thereof. Further, prism ridges of the first prism sheet are attached to the bottom surface of the second prism sheet by means of an adhesive so that the prism pattern of the first prism sheet and the prism pattern of the second prism sheet are directed in the same direction.
    Type: Application
    Filed: June 18, 2012
    Publication date: January 10, 2013
    Applicant: GLOTEC CO., LTD.
    Inventors: Gi Suk SUNG, Chang Kun KIM
  • Composition for forming prism layer and prism film manufactured using the same
    Patent number: 7911722
    Abstract: A composition for forming a prism layer and a prism film manufactured using the same. The composition for forming a prism layer includes a UV-curable monomer A, including a fluorene derivative diacrylate monomer represented by Formula 1 or 2; a UV-curable monomer B, including at least one acrylate monomer; a photoinitiator; and an additive, and thus is excellent in surface strength, adhesion to a substrate film and anti-yellowing properties, with a viscosity suitable for formation of the prism layer.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: March 22, 2011
    Assignee: Kolon Industries, Inc.
    Inventors: Woo Chul Jung, Chang Kun Kim, Jong Min Park
  • Composition For Forming Prism Layer And Prism Film Manufactured Using The Same
    Publication number: 20080312355
    Abstract: A composition for forming a prism layer and a prism film manufactured using the same. The composition for forming a prism layer includes a UV-curable monomer A, including a fluorene derivative diacrylate monomer represented by Formula 1 or 2; a UV-curable monomer B, including at least one acrylate monomer; a photoinitiator; and an additive, and thus is excellent in surface strength, adhesion to a substrate film and anti-yellowing properties, with a viscosity suitable for formation of the prism layer.
    Type: Application
    Filed: January 26, 2006
    Publication date: December 18, 2008
    Applicant: Kolon Ind, INC./KR
    Inventors: Woo Chul Jung, Chang Kun Kim, Jong Min Park