Patents by Inventor Yusuke ITAGAKI

Yusuke ITAGAKI 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: 11029600
    Abstract: A resist composition including a resin component having more than 30 mol % of a structural unit represented by formula (a0-1), and an acid generator represented by formula (b1) in which R01 represents a hydrogen atom, an alkyl group or a halogenated alkyl group; Va01 represents an alkylene group; Ra01 represents an acid dissociable group; Rb01 represents an cyclic hydrocarbon group; Lb01 represents —O—C(?O)— or —C(?O)—O—; Yb01 represents a divalent linking group or a single bond; Vb01 represents a fluorinated alkylene group; Rb02 represents a fluorine atom or a hydrogen atom; provided that the total number of fluorine atoms contained in Vb01 and Rb02 is 2 or 3; and Mm+ represents an m-valent organic cation.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: June 8, 2021
    Assignee: TOKYO OHKA KOGYO CO., LTD.
    Inventors: Takehito Seo, Tomoyuki Hirano, Yuta Iwasawa, Yusuke Itagaki
  • Patent number: 10754182
    Abstract: The purpose of the invention is to realize the liquid crystal display device that has narrow frame area and light from the back light does not leak. The structure of the present invention is: A liquid crystal display device having a liquid crystal display panel and a back light comprising; the liquid crystal display panel has a first side, a second side, which crosses the first side, and a corner that connects the first side and the second side, the side surface of the liquid crystal display panel and the side surface of the back light are fixed to each other by the black resin at the first side and at the second side, a light shield film that is different from the black resin is formed on the side surface of the liquid crystal display panel and the side surface of the back light at the corner.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: August 25, 2020
    Assignee: Japan Display Inc.
    Inventor: Yusuke Itagaki
  • Publication number: 20200081345
    Abstract: A resist composition including a resin component having more than 30 mol % of a structural unit represented by formula (a0-1), and an acid generator represented by formula (b1) in which R01 represents a hydrogen atom, an alkyl group or a halogenated alkyl group; Va01 represents an alkylene group; Ra01 represents an acid dissociable group; Rb01 represents an cyclic hydrocarbon group; Lb01 represents —O—C(?O)— or —C(?O)—O—; Yb01 represents a divalent linking group or a single bond; Vb01 represents a fluorinated alkylene group; Rb02 represents a fluorine atom or a hydrogen atom; provided that the total number of fluorine atoms contained in Vb01 and Rb02 is 2 or 3; and Mm+ represents an m-valent organic cation.
    Type: Application
    Filed: August 8, 2019
    Publication date: March 12, 2020
    Inventors: Takehito SEO, Tomoyuki HIRANO, Yuta IWASAWA, Yusuke ITAGAKI
  • Publication number: 20190129232
    Abstract: The purpose of the invention is to realize the liquid crystal display device that has narrow frame area and light from the back light does not leak. The structure of the present invention is: A liquid crystal display device having a liquid crystal display panel and a back light comprising; the liquid crystal display panel has a first side, a second side, which crosses the first side, and a corner that connects the first side and the second side, the side surface of the liquid crystal display panel and the side surface of the back light are fixed to each other by the black resin at the first side and at the second side, a light shield film that is different from the black resin is formed on the side surface of the liquid crystal display panel and the side surface of the back light at the corner.
    Type: Application
    Filed: October 19, 2018
    Publication date: May 2, 2019
    Applicant: Japan Display Inc.
    Inventor: Yusuke ITAGAKI