Patents by Inventor Yukinori TASHIRO

Yukinori TASHIRO 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: 10186432
    Abstract: The reliability of a semiconductor device is improved. During resin injection in a molding step, in a plan view, a plurality of gates of a molding die are arranged at positions different from those over extended lines of a plurality of dicing regions and a resin is injected from the gates. In this way, it becomes possible to reduce entrainment of air in the dicing regions and to lower an occurrence rate of voids. As a consequence, it becomes possible to suppress an occurrence of poor appearance such as formation of voids in a sealing body and to suppress formation of a starting point of a crack which may occur during a reflow process. Thus, the reliability of the semiconductor device can be improved.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: January 22, 2019
    Assignee: Renesas Electronics Corporation
    Inventor: Yukinori Tashiro
  • Publication number: 20180226275
    Abstract: The reliability of a semiconductor device is improved. During resin injection in a molding step, in a plan view, a plurality of gates of a molding die are arranged at positions different from those over extended lines of a plurality of dicing regions and a resin is injected from the gates. In this way, it becomes possible to reduce entrainment of air in the dicing regions and to lower an occurrence rate of voids. As a consequence, it becomes possible to suppress an occurrence of poor appearance such as formation of voids in a sealing body and to suppress formation of a starting point of a crack which may occur during a reflow process. Thus, the reliability of the semiconductor device can be improved.
    Type: Application
    Filed: April 9, 2018
    Publication date: August 9, 2018
    Inventor: Yukinori TASHIRO
  • Patent number: 9966279
    Abstract: The reliability of a semiconductor device is improved. During resin injection in a molding step, in a plan view, a plurality of gates of a molding die are arranged at positions different from those over extended lines of a plurality of dicing regions and a resin is injected from the gates. In this way, it becomes possible to reduce entrainment of air in the dicing regions and to lower an occurrence rate of voids. As a consequence, it becomes possible to suppress an occurrence of poor appearance such as formation of voids in a sealing body and to suppress formation of a starting point of a crack which may occur during a reflow process. Thus, the reliability of the semiconductor device can be improved.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: May 8, 2018
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventor: Yukinori Tashiro
  • Publication number: 20170287737
    Abstract: The reliability of a semiconductor device is improved. During resin injection in a molding step, in a plan view, a plurality of gates of a molding die are arranged at positions different from those over extended lines of a plurality of dicing regions and a resin is injected from the gates. In this way, it becomes possible to reduce entrainment of air in the dicing regions and to lower an occurrence rate of voids. As a consequence, it becomes possible to suppress an occurrence of poor appearance such as formation of voids in a sealing body and to suppress formation of a starting point of a crack which may occur during a reflow process. Thus, the reliability of the semiconductor device can be improved.
    Type: Application
    Filed: February 9, 2017
    Publication date: October 5, 2017
    Inventor: Yukinori TASHIRO
  • Patent number: 8710637
    Abstract: To suppress a short circuit between neighboring wires which is caused when the loop of a wire is formed into multiple stages in a semiconductor device in which a wiring board and one semiconductor chip mounted over a main surface thereof are electrically coupled with the wire. In a semiconductor device in which a chip is mounted on an upper surface of a wiring board and a bonding lead of the wiring board and a bonding pad of the chip are electrically coupled with wires, a short circuit between the neighboring wires is suppressed by making larger the diameter of the longest wire arranged in a position closest to a corner part of the chip than the diameter of the other wires.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: April 29, 2014
    Assignee: Renesas Electronics Corporation
    Inventors: Yukinori Tashiro, Yoshinori Miyaki
  • Publication number: 20130292815
    Abstract: To suppress a short circuit between neighboring wires which is caused when the loop of a wire is formed into multiple stages in a semiconductor device in which a wiring board and one semiconductor chip mounted over a main surface thereof are electrically coupled with the wire. In a semiconductor device in which a chip is mounted on an upper surface of a wiring board and a bonding lead of the wiring board and a bonding pad of the chip are electrically coupled with wires, a short circuit between the neighboring wires is suppressed by making larger the diameter of the longest wire arranged in a position closest to a corner part of the chip than the diameter of the other wires.
    Type: Application
    Filed: July 11, 2013
    Publication date: November 7, 2013
    Inventors: Yukinori TASHIRO, Yoshinori MIYAKI
  • Patent number: 8525306
    Abstract: To suppress a short circuit between neighboring wires which is caused when the loop of a wire is formed into multiple stages in a semiconductor device in which a wiring board and one semiconductor chip mounted over a main surface thereof are electrically coupled with the wire. In a semiconductor device in which a chip is mounted on an upper surface of a wiring board and a bonding lead of the wiring board and a bonding pad of the chip are electrically coupled with wires, a short circuit between the neighboring wires is suppressed by making larger the diameter of the longest wire arranged in a position closest to a corner part of the chip than the diameter of the other wires.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: September 3, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Yukinori Tashiro, Yoshinori Miyaki
  • Publication number: 20120018859
    Abstract: To suppress a short circuit between neighboring wires which is caused when the loop of a wire is formed into multiple stages in a semiconductor device in which a wiring board and one semiconductor chip mounted over a main surface thereof are electrically coupled with the wire. In a semiconductor device in which a chip is mounted on an upper surface of a wiring board and a bonding lead of the wiring board and a bonding pad of the chip are electrically coupled with wires, a short circuit between the neighboring wires is suppressed by making larger the diameter of the longest wire arranged in a position closest to a corner part of the chip than the diameter of the other wires.
    Type: Application
    Filed: June 22, 2011
    Publication date: January 26, 2012
    Applicant: RENESAS ELECTRONICS CORPORATION
    Inventors: Yukinori TASHIRO, Yoshinori MIYAKI