Patents by Inventor Chul In JOUNG

Chul In JOUNG 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: 11999119
    Abstract: The present disclosure relates to a method for manufacturing a polarizing plate. The method includes a step of preparing a transfer type retarder laminate which has a carrier substrate, an alignment film and a retarder layer sequentially; and a step of laminating the transfer type retarder laminate on one side of a polymeric stretched film containing a dichroic substance, where a peel force at a peeling angle of 90° between the carrier substrate and the retarder layer in the transfer type retarder laminate and a peeling rate of 300 mm/min is in a range of 0.10 N/20 mm to 0.13 N/20 mm. The polarizing plate can be used as a circularly polarizing plate or an optical compensation polarizing plate in various display devices.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: June 4, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Hyung Il Yang, Dong Ho Ko, Seong Jin Kim, Chul In Joung, Myeong Ho Lee, Lee Won Kim
  • Publication number: 20210252813
    Abstract: The present disclosure relates to a method for manufacturing a polarizing plate. The method includes a step of preparing a transfer type retarder laminate which has a carrier substrate, an alignment film and a retarder layer sequentially; and a step of laminating the transfer type retarder laminate on one side of a polymeric stretched film containing a dichroic substance, where a peel force at a peeling angle of 90° between the carrier substrate and the retarder layer in the transfer type retarder laminate and a peeling rate of 300 mm/min is in a range of 0.10 N/20 mm to 0.13 N/20 mm. The polarizing plate can be used as a circularly polarizing plate or an optical compensation polarizing plate in various display devices.
    Type: Application
    Filed: June 24, 2019
    Publication date: August 19, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Hyung Il YANG, Dong Ho KO, Seong Jin KIM, Chul In JOUNG, Myeong Ho LEE, Lee Won KIM
  • Publication number: 20150147490
    Abstract: Provided are a liquid crystal composition, a liquid crystal film and a display device. The liquid crystal composition according to the present application may form a liquid crystal layer in which staining due to a thickness difference does not occur even in large-area coating such that a liquid crystal layer can be formed on a base layer having erosivity to a raw material since the liquid crystal composition may have a suitable solubility even in a solvent in which solubility is normally low.
    Type: Application
    Filed: January 27, 2015
    Publication date: May 28, 2015
    Inventors: Su Young RYU, Doo Young HUH, Seong Jin KIM, Chul In JOUNG, Ji Youn LEE