Patents by Inventor Tanemasa HARADA

Tanemasa HARADA 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: 9757935
    Abstract: An adhesive-film exfoliating device includes an absorption stage 6 for absorbing a liquid crystal display panel 4 in which a polarizing plate 3 is adhered to a glass plate 2, a clamping unit 7 for clamping a corner 3a of the polarizing plate 3 exfoliated from the glass plate 2 and a ball screw shaft 11 for moving the absorption stage 6 relatively to the clamping unit 7. A ball screw nut 14 in screw-engagement with the ball screw shaft 11 is fixed on a back surface of the absorption stage 6. With the rotation of the ball screw shaft 11, the absorption stage 6 integral with the ball screw nut 14 is slid in a direction to exfoliate the polarizing plate 3 exfoliated from the glass plate 2. In a manufacturing method of the liquid crystal display panel 4, a process of exfoliating the polarizing plate 3 from the glass plate 2 includes steps of moving the absorption stage 6 while allowing the clamping unit 7 to clamp the corner 3a of the polarizing plate 3.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: September 12, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takeshi Toyoshima, Tanemasa Harada, Shigeru Iwase
  • Publication number: 20080245483
    Abstract: An adhesive-film exfoliating device includes an absorption stage 6 for absorbing a liquid crystal display panel 4 in which a polarizing plate 3 is adhered to a glass plate 2, a clamping unit 7 for clamping a corner 3a of the polarizing plate 3 exfoliated from the glass plate 2 and a ball screw shaft 11 for moving the absorption stage 6 relatively to the clamping unit 7. A ball screw nut 14 in screw-engagement with the ball screw shaft 11 is fixed on a back surface of the absorption stage 6. With the rotation of the ball screw shaft 11, the absorption stage 6 integral with the ball screw nut 14 is slid in a direction to exfoliate the polarizing plate 3 exfoliated from the glass plate 2. In a manufacturing method of the liquid crystal display panel 4, a process of exfoliating the polarizing plate 3 from the glass plate 2 includes steps of moving the absorption stage 6 while allowing the clamping unit 7 to clamp the corner 3a of the polarizing plate 3.
    Type: Application
    Filed: March 14, 2008
    Publication date: October 9, 2008
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takeshi TOYOSHIMA, Tanemasa Harada, Shigeru Iwase
  • Publication number: 20080225224
    Abstract: An adhesive-film exfoliating device includes first and second guide tables 5, 6 having flat mount surfaces 5a, 6a for mounting a liquid crystal display panel 2 having glass plates 3 and polarizing plates 4, a take-up roller 7 on the backside of the tables 5, 6 and a slit 8 arranged between the guide tables 5, 6 to allow a passage of one polarizing plate 4 exfoliated from the lower glass plate 3. The slit 8 is formed with a breadth less than 5 mm. The breadth corresponds to a dimension of the slit 8 in a feeding direction of the glass plate 3 on the flat mount surfaces 5a, 6a. In a manufacturing method of the liquid crystal display panel 2, a process of exfoliating one polarizing plate 4 from the lower glass plate 3 includes a step of pulling the polarizing plate 4 through the slit 8 in a direction to exfoliate the plate 4 from the glass plate 3.
    Type: Application
    Filed: March 14, 2008
    Publication date: September 18, 2008
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takeshi TOYOSHIMA, Tanemasa HARADA, Shigeru IWASE