Patents by Inventor Tatsuhiko Asakawa

Tatsuhiko Asakawa 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: 8018057
    Abstract: A semiconductor device includes: a semiconductor substrate that has an integrated circuit and an electrode electrically connected to the integrated circuit; a first resin layer that is formed in a first region overlapping the integrated circuit over a surface of the semiconductor substrate where the electrode is formed; a wiring that is electrically connected to the electrode and is formed on the first resin layer; and a second resin layer that is formed on the surface of the semiconductor substrate in a second region surrounding the first region, is the second resin layer being spaced a distance from the first resin layer.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: September 13, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Tatsuhiko Asakawa
  • Patent number: 8008182
    Abstract: A method for manufacturing a semiconductor device includes: a) preparing a structure including a semiconductor substrate, an electrode provided on a first surface of the semiconductor substrate, and an insulation film provided on the first surface and having an opening positioned on a first part of the electrode; b) forming a first metal layer from an upper surface of the first part of the electrode to an upper surface of the insulation film; c) forming a resin layer on a first part of the first metal layer, which is positioned on the first part of the electrode, and on the insulation film after the step b); d) removing at least a second part of the resin layer, which is positioned on the first part of the first metal layer, in a manner to leave a first part of the resin layer so as to form a resin protrusion; and e) forming a second metal layer, which is electrically connected with the electrode, from an upper surface of the first metal layer to an upper surface of the resin protrusion.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: August 30, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Tatsuhiko Asakawa
  • Patent number: 7790595
    Abstract: A method for manufacturing a semiconductor device comprises (a) forming a resin layer that includes at least a plurality of a first and a second resin parts, being separated from each other, over a semiconductor substrate having an electrode pad and a passivation film; (b) forming a resin projection in which the first and the second resin parts are integrated by curing the resin layer; and (c) forming a conductive layer that is being connected electrically to the electrode pad and extending over the resin projection, wherein in process (a), the second resin part is formed at least between the electrode pad and the first resin part at a width less than the first resin part.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: September 7, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Tatsuhiko Asakawa, Shuichi Tanaka, Hideo Imai
  • Publication number: 20100201001
    Abstract: A method for manufacturing a semiconductor device includes: a) preparing a structure including a semiconductor substrate, an electrode provided on a first surface of the semiconductor substrate, and an insulation film provided on the first surface and having an opening positioned on a first part of the electrode; b) forming a first metal layer from an upper surface of the first part of the electrode to an upper surface of the insulation film; c) forming a resin layer on a first part of the first metal layer, which is positioned on the first part of the electrode, and on the insulation film after the step b); d) removing at least a second part of the resin layer, which is positioned on the first part of the first metal layer, in a manner to leave a first part of the resin layer so as to form a resin protrusion; and e) forming a second metal layer, which is electrically connected with the electrode, from an upper surface of the first metal layer to an upper surface of the resin protrusion.
    Type: Application
    Filed: January 13, 2010
    Publication date: August 12, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Tatsuhiko ASAKAWA
  • Patent number: 7750468
    Abstract: A semiconductor device includes: a semiconductor substrate that has an integrated circuit, a passivation film formed above the integrated circuit, and an electrode electrically connected to the integrated circuit, the passivation film having an uneven surface, the electrode having at least a portion exposed through the passivation film; a first resin layer that is disposed on the passivation film; a second resin layer that covers the passivation film and the first resin layer; and a wiring that extends from the electrode to a first part of the second resin layer above the first resin layer, the electrode passing on a second part of the second resin layer above the passivation film.
    Type: Grant
    Filed: February 18, 2008
    Date of Patent: July 6, 2010
    Assignee: Seiko Epson Corporation
    Inventor: Tatsuhiko Asakawa
  • Patent number: 7728424
    Abstract: A semiconductor device including: a semiconductor substrate having an electrode; a resin protrusion formed on a surface of the semiconductor substrate on which the electrode is formed, the resin protrusion extending along a straight line and having a sloping region of which a height decreases along the straight line as a distance from a center of the resin protrusion increases; and an interconnect electrically connected to the electrode and extending over the sloping region of the resin protrusion.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: June 1, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Tatsuhiko Asakawa, Hiroki Kato
  • Patent number: 7582967
    Abstract: A semiconductor device including: a semiconductor chip having an electrode; a plurality of resin protrusions formed on a surface of the semiconductor chip on which the electrode is formed, heights of the resin protrusions increasing as a distance from a center of the surface of the semiconductor chip increases; and an interconnect electrically connected to the electrode and formed over one of the resin protrusions.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: September 1, 2009
    Assignee: Seiko Epson Corporation
    Inventor: Tatsuhiko Asakawa
  • Publication number: 20080197505
    Abstract: A semiconductor device includes: a semiconductor substrate that has an integrated circuit, a passivation film formed above the integrated circuit, and an electrode electrically connected to the integrated circuit, the passivation film having an uneven surface, the electrode having at least a portion exposed through the passivation film; a first resin layer that is disposed on the passivation film; a second resin layer that covers the passivation film and the first resin layer; and a wiring that extends from the electrode to a first part of the second resin layer above the first resin layer, the electrode passing on a second part of the second resin layer above the passivation film.
    Type: Application
    Filed: February 18, 2008
    Publication date: August 21, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Tatsuhiko ASAKAWA
  • Publication number: 20080197486
    Abstract: A semiconductor device includes: a semiconductor substrate that has an integrated circuit and an electrode electrically connected to the integrated circuit; a first resin layer that is formed in a first region overlapping the integrated circuit over a surface of the semiconductor substrate where the electrode is formed; a wiring that is electrically connected to the electrode and is formed on the first resin layer; and a second resin layer that is formed on the surface of the semiconductor substrate in a second region surrounding the first region, is the second resin layer being spaced a distance from the first resin layer.
    Type: Application
    Filed: February 20, 2008
    Publication date: August 21, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Tatsuhiko ASAKAWA
  • Publication number: 20070029652
    Abstract: A semiconductor device including: a semiconductor substrate having an electrode; a resin protrusion formed on a surface of the semiconductor substrate on which the electrode is formed, the resin protrusion extending along a straight line and having a sloping region of which a height decreases along the straight line as a distance from a center of the resin protrusion increases; and an interconnect electrically connected to the electrode and extending over the sloping region of the resin protrusion.
    Type: Application
    Filed: July 27, 2006
    Publication date: February 8, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tatsuhiko Asakawa, Hiroki Kato
  • Publication number: 20070023903
    Abstract: A semiconductor device including: a semiconductor chip having an electrode; a plurality of resin protrusions formed on a surface of the semiconductor chip on which the electrode is formed, heights of the resin protrusions increasing as a distance from a center of the surface of the semiconductor chip increases; and an interconnect electrically connected to the electrode and formed over one of the resin protrusions.
    Type: Application
    Filed: July 27, 2006
    Publication date: February 1, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Tatsuhiko Asakawa
  • Publication number: 20070010045
    Abstract: A method for manufacturing a semiconductor device comprises (a) forming a resin layer that includes at least a plurality of a first and a second resin parts, being separated from each other, over a semiconductor substrate having an electrode pad and a passivation film; (b) forming a resin projection in which the first and the second resin parts are integrated by curing the resin layer; and (c) forming a conductive layer that is being connected electrically to the electrode pad and extending over the resin projection, wherein in process (a), the second resin part is formed at least between the electrode pad and the first resin part at a width less than the first resin part.
    Type: Application
    Filed: July 5, 2006
    Publication date: January 11, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tatsuhiko ASAKAWA, Shuichi TANAKA, Hideo IMAI