Patents by Inventor Lee Won KIM

Lee Won 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).

  • 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