Patents by Inventor Tomonobu Sumino

Tomonobu Sumino 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: 20020060771
    Abstract: A photosensitive resin composition which enables the formation of a pattern manifesting large elastic deformation ratio and small plastic deformation ratio in a wider temperature range, and a color filter which enables the production of a liquid crystal display having a columnar convex part for setting the thickness of a liquid crystal layer and having excellent display qualities are provided.
    Type: Application
    Filed: September 25, 2001
    Publication date: May 23, 2002
    Inventors: Tomonobu Sumino, Akira Inoue
  • Patent number: 6187485
    Abstract: A method of forming raised and recessed patterns comprising: the first step of forming over a substrate a photosensitive resin layer including an alkali-insoluble resin and a negative type photosensitive resin, or the first step of forming over a substrate a photosensitive resin layer including a thermosetting resin and a negative type photosensitive resin and then heat-treating the photosensitive resin layer to harden at least a part of the thermosetting resin; the second step of exposing the photosensitive resin layer; and the third step of developing the photosensitive resin layer and hardening it to form a raised and recessed pattern including raised portions representing an exposed region and recessed portions representing an unexposed region. Liquid crystal display color filters which comprises over the substrate a colored layer, and a transparent protective layer and transparent columnar raised portions formed by one of the above two methods.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: February 13, 2001
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Kinji Matsushima, Tomonobu Sumino, Yukihiro Andou