Patents by Inventor Nobuo Hagiwara

Nobuo Hagiwara 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).

  • Deposition mask and manufacturing method thereof
    Patent number: 7704326
    Abstract: A deposition mask with which position precision of a passage hole is improved and deposition can be conducted precisely and a manufacturing method thereof are provided. A mask body made of a metal thin film is fixed and tightly mounted on a frame body having an opening. The mask body has at least one pattern region including a plurality of passage holes for letting through a deposition material, a stress relaxation region including a plurality of fine holes provided at the periphery of the pattern region, and a holding region provided at the periphery of the stress relaxation region. The mask body is tightly mounted on the frame body at a holding region.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: April 27, 2010
    Assignee: Sony Corporation
    Inventors: Nobuo Hagiwara, Hideo Nagasaki, Tsutomu Mori, Tatsushiro Hirata, Hajime Yagi
  • Deposition mask and manufacturing method thereof
    Publication number: 20050115503
    Abstract: A deposition mask with which position precision of a passage hole is improved and deposition can be conducted precisely and a manufacturing method thereof are provided. A mask body made of a metal thin film is fixed and tightly mounted on a frame body having an opening. The mask body has at least one pattern region including a plurality of passage holes for letting through a deposition material, a stress relaxation region including a plurality of fine holes provided at the periphery of the pattern region, and a holding region provided at the periphery of the stress relaxation region. The mask body is tightly mounted on the frame body at a holding region.
    Type: Application
    Filed: December 2, 2004
    Publication date: June 2, 2005
    Inventors: Nobuo Hagiwara, Hideo Nagasaki, Tsutomu Mori, Tatsushiro Hirata, Hajime Yagi