Patents by Inventor Takumi Ihara

Takumi Ihara 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: 11694985
    Abstract: A semiconductor device includes a wiring board, a semiconductor chip arranged on the wiring board, and a plurality of bumps arranged between the wiring board and the semiconductor chip, wherein the wiring board includes a first conductor, a second conductor, a third conductor, a first via, a second via, and a third via, wherein the second conductor is arranged at a position closer to a center of the semiconductor chip than the first conductor is to the center, as seen in a thickness direction, the first conductor and the second conductor are arranged next to each other without another conductor interposed therebetween, as seen in the thickness direction, and a first distance between the first conductor and the second conductor is larger than a second distance between the first conductor and the third conductor.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: July 4, 2023
    Assignee: SOCIONEXT INC.
    Inventors: Takumi Ihara, Masanori Natsuaki
  • Publication number: 20220148991
    Abstract: A semiconductor device includes a wiring board, a semiconductor chip arranged on the wiring board, and a plurality of bumps arranged between the wiring board and the semiconductor chip, wherein the wiring board includes a first conductor, a second conductor, a third conductor, a first via, a second via, and a third via, wherein the second conductor is arranged at a position closer to a center of the semiconductor chip than the first conductor is to the center, as seen in a thickness direction, the first conductor and the second conductor are arranged next to each other without another conductor interposed therebetween, as seen in the thickness direction, and a first distance between the first conductor and the second conductor is larger than a second distance between the first conductor and the third conductor.
    Type: Application
    Filed: January 20, 2022
    Publication date: May 12, 2022
    Inventors: Takumi IHARA, Masanori NATSUAKI
  • Patent number: 11329019
    Abstract: A semiconductor device includes a wiring board, a semiconductor chip arranged on the wiring board, and a plurality of bumps arranged between the wiring board and the semiconductor chip, wherein the wiring board includes a first conductor, a second conductor, a third conductor, a first via, a second via, and a third via, wherein the second conductor is arranged at a position closer to a center of the semiconductor chip than the first conductor is to the center, as seen in a thickness direction, the first conductor and the second conductor are arranged next to each other without another conductor interposed therebetween, as seen in the thickness direction, and a first distance between the first conductor and the second conductor is larger than a second distance between the first conductor and the third conductor.
    Type: Grant
    Filed: November 17, 2020
    Date of Patent: May 10, 2022
    Assignee: SOCIONEXT INC.
    Inventors: Takumi Ihara, Masanori Natsuaki
  • Publication number: 20210159199
    Abstract: A semiconductor device includes a wiring board, a semiconductor chip arranged on the wiring board, and a plurality of bumps arranged between the wiring board and the semiconductor chip, wherein the wiring board includes a first conductor, a second conductor, a third conductor, a first via, a second via, and a third via, wherein the second conductor is arranged at a position closer to a center of the semiconductor chip than the first conductor is to the center, as seen in a thickness direction, the first conductor and the second conductor are arranged next to each other without another conductor interposed therebetween, as seen in the thickness direction, and a first distance between the first conductor and the second conductor is larger than a second distance between the first conductor and the third conductor.
    Type: Application
    Filed: November 17, 2020
    Publication date: May 27, 2021
    Inventors: Takumi Ihara, Masanori Natsuaki
  • Patent number: 10008432
    Abstract: A semiconductor device includes a substrate and a semiconductor element mounted on the top surface of the substrate. On the top surface of the substrate, one or more pads are disposed outside the mounted semiconductor element when seen in a plan view. Then, a protrusion is disposed on each of the pads. A heat sink is disposed above the semiconductor element and the protrusions, and then bonded to the substrate by an adhesive provided between the heat sink and the substrate. The adhesive is provided in such a manner as to be in contact with the protrusions on the substrate.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: June 26, 2018
    Assignee: SOCIONEXT INC.
    Inventors: Takumi Ihara, Nobutaka Shimizu, Masamitsu Ikumo
  • Publication number: 20170047266
    Abstract: A semiconductor device includes a substrate and a semiconductor element mounted on the top surface of the substrate. On the top surface of the substrate, one or more pads are disposed outside the mounted semiconductor element when seen in a plan view. Then, a protrusion is disposed on each of the pads. A heat sink is disposed above the semiconductor element and the protrusions, and then bonded to the substrate by an adhesive provided between the heat sink and the substrate. The adhesive is provided in such a manner as to be in contact with the protrusions on the substrate.
    Type: Application
    Filed: July 21, 2016
    Publication date: February 16, 2017
    Inventors: Takumi Ihara, Nobutaka Shimizu, Masamitsu Ikumo
  • Patent number: 9472482
    Abstract: A semiconductor device includes a substrate, a semiconductor element disposed on the substrate, a heat radiating plate disposed on the substrate and covering the semiconductor element, and a connection member connecting an upper surface of the semiconductor element and a lower surface of the heat radiating plate, wherein the connection member includes a first member being in contact with the upper surface of the semiconductor element and having a first melting point, a second member being in contact with the first member, having a larger area than the first member, and having a second melting point higher than the first melting point, and a third member interposed between the second member and the heat radiating plate, having an area smaller than the second member, and having a third melting point lower than the second melting point.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: October 18, 2016
    Assignee: SOCIONEXT INC.
    Inventors: Takumi Ihara, Masami Mouri
  • Patent number: 9425088
    Abstract: A semiconductor device includes: a substrate; a semiconductor element installed on the substrate so that a surface formed with an electrode is directed to the substrate; a chip capacitor installed on the substrate; and a conductive material covering a rear surface opposite to the surface of the semiconductor element and joining to one terminal electrode of the chip capacitor.
    Type: Grant
    Filed: April 13, 2013
    Date of Patent: August 23, 2016
    Assignee: SOCIONEXT INC.
    Inventors: Takumi Ihara, Seiji Ueno, Joji Fujimori, Yasunori Fujimoto
  • Patent number: 9385092
    Abstract: A semiconductor device includes a substrate, a semiconductor chip mounted on the substrate, a plate-like member that is fixed on the semiconductor chip and has a thermal expansion coefficient different from that of the substrate, and a first adhesive that is provided between the substrate and the plate-like member, the first adhesive being connected to the plate-like member and separated from the substrate, or being separated from the plate-like member and connected to the substrate.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: July 5, 2016
    Assignee: SOCIONEXT INC.
    Inventor: Takumi Ihara
  • Patent number: 8962394
    Abstract: A semiconductor device includes a substrate, a semiconductor element disposed on the substrate, and a heat conductive member composed of a solder material. The heat conductive member covers the semiconductor element, and is connected to a connection pad formed on the substrate. A heat radiator is disposed on the heat conductive member. The heat conductive member thermally connecting the semiconductor element to the heat radiator reduces the risk that electromagnetic noise may be emitted from or may be incident on the semiconductor element.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: February 24, 2015
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Takumi Ihara
  • Patent number: 8933560
    Abstract: A semiconductor device includes a substrate, a semiconductor element disposed on the substrate, a heat radiating plate disposed on the substrate and covering the semiconductor element, and a connection member connecting an upper surface of the semiconductor element and a lower surface of the heat radiating plate, wherein the connection member includes a first member being in contact with the upper surface of the semiconductor element and having a first melting point, a second member being in contact with the first member, having a larger area than the first member, and having a second melting point higher than the first melting point, and a third member interposed between the second member and the heat radiating plate, having an area smaller than the second member, and having a third melting point lower than the second melting point.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: January 13, 2015
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Takumi Ihara, Masami Mouri
  • Publication number: 20140370660
    Abstract: A semiconductor device includes a substrate, a semiconductor element disposed on the substrate, and a heat conductive member composed of a solder material. The heat conductive member covers the semiconductor element, and is connected to a connection pad formed on the substrate. A heat radiator is disposed on the heat conductive member. The heat conductive member thermally connecting the semiconductor element to the heat radiator reduces the risk that electromagnetic noise may be emitted from or may be incident on the semiconductor element.
    Type: Application
    Filed: September 3, 2014
    Publication date: December 18, 2014
    Inventor: Takumi IHARA
  • Patent number: 8853851
    Abstract: A semiconductor device includes a substrate, a semiconductor element disposed on the substrate, and a heat conductive member composed of a solder material. The heat conductive member covers the semiconductor element, and is connected to a connection pad formed on the substrate. A heat radiator is disposed on the heat conductive member. The heat conductive member thermally connecting the semiconductor element to the heat radiator reduces the risk that electromagnetic noise may be emitted from or may be incident on the semiconductor element.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: October 7, 2014
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Takumi Ihara
  • Publication number: 20140167246
    Abstract: A semiconductor device includes a substrate, a semiconductor element disposed on the substrate, a heat radiating plate disposed on the substrate and covering the semiconductor element, and a connection member connecting an upper surface of the semiconductor element and a lower surface of the heat radiating plate, wherein the connection member includes a first member being in contact with the upper surface of the semiconductor element and having a first melting point, a second member being in contact with the first member, having a larger area than the first member, and having a second melting point higher than the first melting point, and a third member interposed between the second member and the heat radiating plate, having an area smaller than the second member, and having a third melting point lower than the second melting point.
    Type: Application
    Filed: February 20, 2014
    Publication date: June 19, 2014
    Applicant: FUJITSU SEMICONDUCTOR LIMITED
    Inventors: Takumi Ihara, Masami Mouri
  • Publication number: 20140084439
    Abstract: A semiconductor device includes a substrate, a semiconductor chip mounted on the substrate, a plate-like member that is fixed on the semiconductor chip and has a thermal expansion coefficient different from that of the substrate, and a first adhesive that is provided between the substrate and the plate-like member, the first adhesive being connected to the plate-like member and separated from the substrate, or being separated from the plate-like member and connected to the substrate.
    Type: Application
    Filed: August 21, 2013
    Publication date: March 27, 2014
    Applicant: FUJITSU SEMICONDUCTOR LIMITED
    Inventor: Takumi Ihara
  • Patent number: 8673684
    Abstract: A disclosed semiconductor device includes a wiring board, a semiconductor element mounted on a principal surface of the wiring board with flip chip mounting, a first conductive pattern formed on the principal surface along at least an edge portion of the semiconductor element, a second conductive pattern formed on the principal surface along the first conductive pattern and away from the first conductive pattern, a passive element bridging between the first conductive pattern and the second conductive pattern on the principal surface of the wiring board, and a resin layer filling a space between the wiring board and the semiconductor chip, wherein the resin layer extends between the semiconductor element and the first conductive pattern on the principal surface of the wiring board.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: March 18, 2014
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Takumi Ihara
  • Patent number: 8564121
    Abstract: A semiconductor device includes: a substrate; a semiconductor element installed on the substrate so that a surface formed with an electrode is directed to the substrate; a chip capacitor installed on the substrate; and a conductive material covering a rear surface opposite to the surface of the semiconductor element and joining to one terminal electrode of the chip capacitor.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: October 22, 2013
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Takumi Ihara, Seiji Ueno, Joji Fujimori, Yasunori Fujimoto
  • Patent number: 8541259
    Abstract: A disclosed semiconductor device includes a wiring board, a semiconductor element mounted on a principal surface of the wiring board with flip chip mounting, a first conductive pattern formed on the principal surface along at least an edge portion of the semiconductor element, a second conductive pattern formed on the principal surface along the first conductive pattern and away from the first conductive pattern, a passive element bridging between the first conductive pattern and the second conductive pattern on the principal surface of the wiring board, and a resin layer filling a space between the wiring board and the semiconductor chip, wherein the resin layer extends between the semiconductor element and the first conductive pattern on the principal surface of the wiring board.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: September 24, 2013
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Takumi Ihara
  • Patent number: 8299607
    Abstract: A semiconductor device includes a substrate, a semiconductor element disposed on the substrate, a heat radiating plate disposed on the substrate and covering the semiconductor element, and a connection member connecting an upper surface of the semiconductor element and a lower surface of the heat radiating plate, wherein the connection member includes a first member being in contact with the upper surface of the semiconductor element and having a first melting point, a second member being in contact with the first member, having a larger area than the first member, and having a second melting point higher than the first melting point, and a third member interposed between the second member and the heat radiating plate, having an area smaller than the second member, and having a third melting point lower than the second melting point.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: October 30, 2012
    Assignee: Fujitsi Semiconductor Limited
    Inventors: Takumi Ihara, Masami Mouri
  • Publication number: 20120270370
    Abstract: A disclosed semiconductor device includes a wiring board, a semiconductor element mounted on a principal surface of the wiring board with flip chip mounting, a first conductive pattern formed on the principal surface along at least an edge portion of the semiconductor element, a second conductive pattern formed on the principal surface along the first conductive pattern and away from the first conductive pattern, a passive element bridging between the first conductive pattern and the second conductive pattern on the principal surface of the wiring board, and a resin layer filling a space between the wiring board and the semiconductor chip, wherein the resin layer extends between the semiconductor element and the first conductive pattern on the principal surface of the wiring board.
    Type: Application
    Filed: April 9, 2012
    Publication date: October 25, 2012
    Applicant: FUJITSU SEMICONDUCTOR LIMITED
    Inventor: Takumi Ihara