Patents by Inventor Koujiro Nakamura

Koujiro Nakamura 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: 8163599
    Abstract: A flip-chip mounting apparatus has a shield film (18) on the side of a pressurizing film (10b) of a tool protection sheet (10). When a semiconductor chip (1) is heated and pressurized via the tool protection sheet (10), the pressurizing film (10b) is released from a mold by a sheet fixing jig (9), and is expanded by a pressurizing/heating tool (11) to abut against an insulating resin film (5) protruding from the periphery of the semiconductor chip (1) and cure the insulating resin film (5) with an external pressure being applied.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: April 24, 2012
    Assignee: Panasonic Corporation
    Inventors: Yoshihiro Tomura, Kentaro Kumazawa, Takayuki Higuchi, Koujiro Nakamura
  • Patent number: 8050049
    Abstract: The present invention provides a semiconductor device of a double-side mounting structure including a circuit board and a plurality of semiconductor chips arranged and joined together on the opposite surfaces of the circuit board, wherein in an area in which the semiconductor chip 31 mounted on the top surface of the circuit board 2 overlaps with the semiconductor chip 32 mounted on the bottom surface of the circuit board 2, a recess portion 21 (or a protruding portion 22) is formed in the surfaces of the circuit board 2.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: November 1, 2011
    Assignee: Panasonic Corporation
    Inventors: Teppei Iwase, Kazuhiro Nobori, Yoshihiro Tomura, Koujiro Nakamura, Kentaro Kumazawa
  • Publication number: 20110020983
    Abstract: A flip-chip mounting apparatus has a shield film (18) on the side of a pressurizing film (10b) of a tool protection sheet (10). When a semiconductor chip (1) is heated and pressurized via the tool protection sheet (10), the pressurizing film (10b) is released from a mold by a sheet fixing jig (9), and is expanded by a pressurizing/heating tool (11) to abut against an insulating resin film (5) protruding from the periphery of the semiconductor chip (1) and cure the insulating resin film (5) with an external pressure being applied.
    Type: Application
    Filed: March 30, 2009
    Publication date: January 27, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Yoshihiro Tomura, Kentaro Kumazawa, Takayuki Higuchi, Koujiro Nakamura
  • Publication number: 20100265683
    Abstract: The present invention provides a semiconductor device of a double-side mounting structure including a circuit board and a plurality of semiconductor chips arranged and joined together on the opposite surfaces of the circuit board, wherein in an area in which the semiconductor chip 31 mounted on the top surface of the circuit board 2 overlaps with the semiconductor chip 32 mounted on the bottom surface of the circuit board 2, a recess portion (or a protruding portion 22) is formed in the surfaces of the circuit board 2.
    Type: Application
    Filed: April 21, 2009
    Publication date: October 21, 2010
    Applicant: Panasonic Corporation
    Inventors: Teppei IWASE, Kazuhiro NOBORI, Yoshihiro TOMURA, Koujiro NAKAMURA, Kentaro Kumazawa
  • Patent number: 6966964
    Abstract: A method for manufacturing a semiconductor device whereby semiconductor elements like semiconductor bare chips are mounted with high productivity on both surfaces of a circuit board while preventing the board from warping, and an apparatus for manufacturing a semiconductor device for faithfully embodying the manufacturing method. Semiconductor elements temporarily fixed on both surfaces of a circuit board are heated while being pressurized in directions to be each pressed against the board, whereby adhesive on both surfaces of the board is thermally set simultaneously and bumps on each semiconductor elements are press-bonded to their opposing board electrodes on the board to be electrically connected. Ultraviolet rays are irradiated to a circumference of mixed curing adhesive applied to at least one surface of the circuit board to form an ultraviolet curing part only on the circumference of the adhesive, thereby increasing strength for temporarily fixing the semiconductor elements to the circuit board.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: November 22, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Koujiro Nakamura, Yoshihiko Yagi, Michiro Yoshino, Kazuto Nishida
  • Publication number: 20030138993
    Abstract: A method for manufacturing a semiconductor device whereby semiconductor elements like semiconductor bare chips are mounted with high productivity on both surfaces of a circuit board while preventing the board from warping, and an apparatus for manufacturing a semiconductor device for faithfully embodying the manufacturing method. Semiconductor elements temporarily fixed on both surfaces of a circuit board are heated while being pressurized in directions to be each pressed against the board, whereby adhesive on both surfaces of the board is thermally set simultaneously and bumps on each semiconductor elements are press-bonded to their opposing board electrodes on the board to be electrically connected. Ultraviolet rays are irradiated to a circumference of mixed curing adhesive applied to at least one surface of the circuit board to form an ultraviolet curing part only on the circumference of the adhesive, thereby increasing strength for temporarily fixing the semiconductor elements to the circuit board.
    Type: Application
    Filed: December 26, 2002
    Publication date: July 24, 2003
    Applicant: Matsushita Elec Ind. Co., Ltd.
    Inventors: Koujiro Nakamura, Yoshihiko Yagi, Michiro Yoshino, Kazuto Nishida