Patents by Inventor Syunsuke KAWAMATA

Syunsuke KAWAMATA 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: 11635660
    Abstract: This liquid crystal display device has a plurality of pixels. Each pixel in the plurality of pixels includes first to fourth alignment regions; these first to fourth alignment regions are arranged in the longitudinal direction of the pixels, and the difference between any two alignment orientations in the first to fourth alignment regions is approximately equal to an integer multiple of 90 degrees. Of the pre-tilt angles defined by a first alignment film and a second alignment film in each of the first to fourth alignment regions, one pre-tilt angle is less than 90 degrees and the other pre-tilt angle is substantially 90 degrees. The optical alignment film is formed using a polymer having an optical alignment group in the side chain, and the content of the optical alignment group in the side chain of the polymer is less than 1.1 mmol/g.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: April 25, 2023
    Assignee: JSR CORPORATION
    Inventors: Koichi Miyachi, Yoshihiko Kuroda, Ryuzo Ono, Syunsuke Kawamata
  • Publication number: 20220057677
    Abstract: This liquid crystal display device has a plurality of pixels. Each pixel in the plurality of pixels includes first to fourth alignment regions; these first to fourth alignment regions are arranged in the longitudinal direction of the pixels, and the difference between any two alignment orientations in the first to fourth alignment regions is approximately equal to an integer multiple of 90 degrees. Of the pre-tilt angles defined by a first alignment film and a second alignment film in each of the first to fourth alignment regions, one pre-tilt angle is less than 90 degrees and the other pre-tilt angle is substantially 90 degrees. The optical alignment film is formed using a polymer having an optical alignment group in the side chain, and the content of the optical alignment group in the side chain of the polymer is less than 1.1 mmol/g.
    Type: Application
    Filed: November 3, 2021
    Publication date: February 24, 2022
    Applicant: JSR CORPORATION
    Inventors: Koichi MIYACHI, Yoshihiko KURODA, Ryuzo ONO, Syunsuke KAWAMATA