Patents by Inventor Yoshikuni Nagashima

Yoshikuni Nagashima 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: 7068261
    Abstract: A liquid crystal display device including a liquid crystal display panel having a first surface for displaying an image and a second surface different from the first surface, and a position information input device provided on a first-surface side of the liquid crystal display panel. The position information input device is made of a first substrate and a second substrate more easily deformable than the first substrate. A transparent insulation film is formed over a surface of the first substrate opposed to the second substrate, a first transparent electrode is provided on the transparent insulation film, and the transparent insulation film is located between the first substrate and the first transparent electrode.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: June 27, 2006
    Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Kiichiro Kubo, Yoshikuni Nagashima, Masaru Suzuki, Terunori Saito
  • Patent number: 6750929
    Abstract: A liquid crystal display device includes a pair of substrates, a liquid crystal layer sealed between main surfaces of the substrates, a sealing member formed on peripheral portions of opposing main surfaces of a pair of these substrates to fixedly secure the pair of substrates to each other and surround the liquid crystal layer, and a light shielding film formed on one of the peripheral portions of the pair of substrates opposite to the liquid crystal layer without manual application. A region on which the light shielding film is formed is overlapped on a region of the main surface of one of the pair of substrates on which the seal member is formed in a back-to-back relationship, and light shielding film is formed of polyester-based resin to which a black pigment is added.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: June 15, 2004
    Assignees: Hitachi, Ltd., Hitachi Electronic Devices Co., Ltd.
    Inventors: Yoshikuni Nagashima, Takanori Yano
  • Patent number: 6456279
    Abstract: A liquid crystal display device has a position information input device over an image-displaying surface of liquid crystal panel. The position information input device is formed by a first substrate and a second substrate more easily deformable than the first substrate. A transparent insulation film is provided over a surface of the first substrate opposed to the second substrate. By providing a first transparent electrode on the transparent insulation film, the flatness of the first transparent electrode is improved and a connection failure of the position information input device is prevented.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: September 24, 2002
    Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Kiichiro Kubo, Yoshikuni Nagashima, Masaru Suzuki, Terunori Saito
  • Publication number: 20020101399
    Abstract: A liquid crystal display device including a liquid crystal display panel having a first surface for displaying an image and a second surface different from the first surface, and a position information input device provided on a first-surface side of the liquid crystal display panel. The position information input device is made of a first substrate and a second substrate more easily deformable than the first substrate. A transparent insulation film is formed over a surface of the first substrate opposed to the second substrate, a first transparent electrode is provided on the transparent insulation film, and the transparent insulation film is located between the first substrate and the first transparent electrode.
    Type: Application
    Filed: March 22, 2002
    Publication date: August 1, 2002
    Inventors: Kiichiro Kubo, Yoshikuni Nagashima, Masaru Suzuki, Terunori Saito
  • Publication number: 20020051106
    Abstract: In a liquid crystal display device including a pair of substrates, a liquid crystal layer which is sealed between main surfaces of the substrates, a seal member which is respectively formed on peripheral portions of the opposing main surfaces of a pair of these substrates so as to fixedly secure a pair of substrates to each other and surrounds the liquid crystal layer, a light shielding film is formed on one of peripheral portions of a pair of substrates simply and without a human hand. That is, the light shielding film is formed on at least one side of the main surface peripheral portion of one of a pair of substrates opposite to the liquid crystal layer. A region on which the light shielding film is formed is overlapped to a region of the main surface of one of a pair of substrates on which the seal member is formed in a back-to-back relationship, and the light shielding film is formed of polyester-based resin to which black pigment is added.
    Type: Application
    Filed: October 23, 2001
    Publication date: May 2, 2002
    Inventors: Yoshikuni Nagashima, Takanori Yano
  • Patent number: 6124919
    Abstract: A liquid crystal display device is constructed such that a liquid crystal layer is sandwiched between an upper substrate, which is provided with upper transparent electrodes for forming pixels, and a lower substrate, which is provided with lower transparent electrodes disposed so as to intersect with the upper transparent electrodes. The liquid crystal panel includes a half reflection layer having a reflection function and a transmission function which is formed on the inner surface of the lower substrate as a lower layer of the lower transparent electrodes; an upper retardation film, an upper polarizing plate, and a light diffusing plate which are laminated on the upper substrate; and a lower retardation film and a lower polarizing plate, which are laminated on the surface of the lower substrate. Due to such a construction, the half reflection type liquid crystal display device is capable of providing an image display of high brightness and high contrast.
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: September 26, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Kiichiro Kubo, Yoshikuni Nagashima, Masaru Suzuki, Terunori Saito
  • Patent number: RE39082
    Abstract: A liquid crystal display device is constructed such that a liquid crystal layer is sandwiched between an upper substrate, which is provided with upper transparent electrodes for forming pixels, and a lower substrate, which is provided with lower transparent electrodes disposed so as to intersect with the upper transparent electrodes. The liquid crystal panel includes a half reflection layer having a reflection function and a transmission function which is formed on the inner surface of the lower substrate as a lower layer of the lower transparent electrodes; an upper retardation film, an upper polarizing plate, and a light diffusing plate which are laminated on the upper substrate; and a lower retardation film and a lower polarizing plate, which are laminated on the surface of the lower substrate. Due to such a construction, the half reflection type liquid crystal display device is capable of providing an image display of high brightness and high contrast.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: May 2, 2006
    Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.
    Inventors: Kiichirou Kubo, Yoshikuni Nagashima, Masaru Suzuki, Terunori Saitou
  • Patent number: RE41678
    Abstract: A liquid crystal display device is constructed such that a liquid crystal layer is sandwiched between an upper substrate, which is provided with upper transparent electrodes for forming pixels, and a lower substrate, which is provided with lower transparent electrodes disposed so as to intersect with the upper transparent electrodes. The liquid crystal panel includes a half reflection layer having a reflection function and a transmission function which is formed on the inner surface of the lower substrate as a lower layer of the lower transparent electrodes; an upper retardation film, an upper polarizing plate, and a light diffusing plate which are laminated on the upper substrate; and a lower retardation film and a lower polarizing plate, which are laminated on the surface of the lower substrate. Due to such a construction, the half reflection type liquid crystal display device is capable of providing an image display of high brightness and high contrast.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: September 14, 2010
    Assignees: Hitachi, Ltd., Hitachi Displays, Ltd.
    Inventors: Kiichirou Kubo, Yoshikuni Nagashima, Masaru Suzuki, Terunori Saitou