Patents by Inventor Tetsuyuki SHIRAKAWA

Tetsuyuki SHIRAKAWA 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: 11667817
    Abstract: A conductive film includes an elongated release film and a plurality of conductive adhesive film pieces provided on the release film. Then, the plurality of adhesive film pieces are arranged in a longitudinal direction X of the release film. For this reason, the adhesive film piece can be set to an arbitrary shape. Accordingly, it is possible to attach the adhesive film piece to adhesive surfaces having various shapes and to efficiently use the adhesive film piece.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: June 6, 2023
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Takashi Tatsuzawa, Kazuya Matsuda, Yutaka Tsuchida, Takashi Seki, Mitsuyoshi Shimamura, Kengo Shinohara, Tetsuyuki Shirakawa, Yasunori Kawabata, Satoru Matsumoto
  • Publication number: 20230137299
    Abstract: A conductive film includes an elongated release film and a plurality of conductive adhesive film pieces provided on the release film. Then, the plurality of adhesive film pieces are arranged in a longitudinal direction X of the release film. For this reason, the adhesive film piece can be set to an arbitrary shape. Accordingly, it is possible to attach the adhesive film piece to adhesive surfaces having various shapes and to efficiently use the adhesive film piece.
    Type: Application
    Filed: December 28, 2022
    Publication date: May 4, 2023
    Inventors: Takashi TATSUZAWA, Kazuya MATSUDA, Yutaka TSUCHIDA, Takashi SEKI, Mitsuyoshi SHIMAMURA, Kengo SHINOHARA, Tetsuyuki SHIRAKAWA, Yasunori KAWABATA, Satoru MATSUMOTO
  • Publication number: 20230002644
    Abstract: A method of producing a connected body, containing: disposing an adhesive film between a first electronic member having a first electronic electrode and a second electronic member having a second electrode; and pressure-bonding the second electronic member to the first electronic member via the adhesive film so that the second electrode is electrically connected to the first electrode; wherein the first electronic member has an indented surface, the first electrode is provided in a depressed portion of the indented surface, the second electrode has a substantially flat surface having an area larger than an area of the first electrode, the adhesive film contains: first conductive particles that are dendritic conductive particles; and second conductive particles containing a non-conductive core and a conductive layer provided on the core, and the second conductive particles have an average particle diameter of not less than a depth of the depressed portion.
    Type: Application
    Filed: December 3, 2020
    Publication date: January 5, 2023
    Inventors: Tetsuyuki SHIRAKAWA, Hiroyuki IZAWA, Takuya MORI, Kenta KIKUCHI
  • Publication number: 20220363958
    Abstract: One aspect of the present invention relates to an adhesive composition used for connecting electronic members, the adhesive composition comprising: a first conductive particle that is a conductive particle having a projection capable of penetrating an oxide film formed on a surface of an electrode of the electronic member; and second conductive particle that is a conductive particle other than the first conductive particle, the second conductive particle having a nonconductive core body and a conductive layer provided on the core body.
    Type: Application
    Filed: August 1, 2022
    Publication date: November 17, 2022
    Inventors: Tetsuyuki SHIRAKAWA, Satoru MATSUMOTO, Yusuke ASAKAWA, Tatsuya KUMADA, Takahiro FUKUI
  • Patent number: 11414573
    Abstract: One aspect of the present invention relates to an adhesive composition used for connecting electronic members, the adhesive composition comprising: a first conductive particle that is a conductive particle having a projection capable of penetrating an oxide film formed on a surface of an electrode of the electronic member; and second conductive particle that is a conductive particle other than the first conductive particle, the second conductive particle having a nonconductive core body and a conductive layer provided on the core body.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: August 16, 2022
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Tetsuyuki Shirakawa, Satoru Matsumoto, Yusuke Asakawa, Tatsuya Kumada, Takahiro Fukui
  • Patent number: 11355469
    Abstract: One aspect of the invention is a method of manufacturing a connection structure, including disposing an adhesive layer between a first electronic member including a first substrate and a first electrode formed on the first substrate and a second electronic member including a second substrate and a second electrode formed on the second substrate, and pressure-bonding the first electronic member and the second electronic member via the adhesive layer such that the first electrode and the second electrode are electrically connected to each other, wherein the first electronic member further including an insulating layer formed on a side of the first electrode opposite to the first substrate, and the adhesive layer including: a first conductive particle being a dendritic conductive particle; and a second conductive particle being a conductive particle other than the first conductive particle and having a non-conductive core and a conductive layer provided on the core.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: June 7, 2022
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Tetsuyuki Shirakawa, Takahiro Fukui, Shinnosuke Iwamoto
  • Patent number: 11342303
    Abstract: This member connection method includes: a cutting step of forming cutting lines C in an adhesive layer at predetermined intervals at least in a width direction of an adhesive tape and making segments of the adhesive layer divided by the cutting lines C continuous at least in a lengthwise direction of the adhesive tape; a transfer step of disposing the segments to face a connection surface of one member to be connected, pressing a heating and pressing tool having an arbitrary pattern shape against the adhesive tape from a separator side and selectively transferring the segments to the one member to be connected; and a connection step for connecting another member to be connected to the one member to be connected via the segments transferred to the one member to be connected.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: May 24, 2022
    Assignee: Showa Denko Materials Co., Ltd.
    Inventor: Tetsuyuki Shirakawa
  • Patent number: 11319466
    Abstract: One aspect of the present invention is an adhesive film comprising: a first adhesive layer comprising a first adhesive component, a first conductive particle that is a dendritic conductive particle, and a second conductive particle that is a conductive particle other than the first conductive particle, the second conductive particle comprising a nonconductive core body and a conductive layer provided on the core body; and a second adhesive layer comprising a second adhesive component, wherein a volume proportion of the second adhesive component in the second adhesive layer is larger than a volume proportion of the first adhesive component in the first adhesive layer.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: May 3, 2022
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Tetsuyuki Shirakawa, Hiroyuki Izawa, Tatsuya Kumada
  • Patent number: 11242472
    Abstract: One aspect of the present invention is an adhesive film comprising a first adhesive layer comprising a first conductive particle that is a dendritic conductive particle; and a second adhesive layer containing a second conductive particle that is a conductive particle other than the first conductive particle, the second conductive particle comprising a nonconductive core body and a conductive layer provided on the core body.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: February 8, 2022
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Tetsuyuki Shirakawa, Hiroyuki Izawa, Takahiro Fukui, Tatsuya Kumada
  • Publication number: 20210074674
    Abstract: This member connection method includes: a cutting step of forming cutting lines C in an adhesive layer at predetermined intervals at least in a width direction of an adhesive tape and making segments of the adhesive layer divided by the cutting lines C continuous at least in a lengthwise direction of the adhesive tape; a transfer step of disposing the segments to face a connection surface of one member to be connected, pressing a heating and pressing tool having an arbitrary pattern shape against the adhesive tape from a separator side and selectively transferring the segments to the one member to be connected; and a connection step for connecting another member to be connected to the one member to be connected via the segments transferred to the one member to be connected.
    Type: Application
    Filed: January 31, 2019
    Publication date: March 11, 2021
    Inventor: Tetsuyuki SHIRAKAWA
  • Publication number: 20210017427
    Abstract: One aspect of the present invention is an adhesive film comprising: a first adhesive layer; a metal layer; and a second adhesive layer in this order, wherein each of the first adhesive layer and the second adhesive layer comprises: a first conductive particle being a dendritic conductive particle; and a second conductive particle being a conductive particle other than the first conductive particle and the second conductive particle comprising a non-conductive core and a conductive layer provided on the core.
    Type: Application
    Filed: December 27, 2018
    Publication date: January 21, 2021
    Inventors: Tetsuyuki SHIRAKAWA, Shinnosuke IWAMOTO, Takahiro FUKUI
  • Publication number: 20200321305
    Abstract: One aspect of the invention is a method of manufacturing a connection structure, including disposing an adhesive layer between a first electronic member including a first substrate and a first electrode formed on the first substrate and a second electronic member including a second substrate and a second electrode formed on the second substrate, and pressure-bonding the first electronic member and the second electronic member via the adhesive layer such that the first electrode and the second electrode are electrically connected to each other, wherein the first electronic member further including an insulating layer formed on a side of the first electrode opposite to the first substrate, and the adhesive layer including: a first conductive particle being a dendritic conductive particle; and a second conductive particle being a conductive particle other than the first conductive particle and having a non-conductive core and a conductive layer provided on the core.
    Type: Application
    Filed: December 27, 2018
    Publication date: October 8, 2020
    Inventors: Tetsuyuki SHIRAKAWA, Takahiro FUKUI, Shinnosuke IWAMOTO
  • Publication number: 20190367783
    Abstract: One aspect of the present invention is an adhesive film comprising: a first adhesive layer comprising a first adhesive component, a first conductive particle that is a dendritic conductive particle, and a second conductive particle that is a conductive particle other than the first conductive particle, the second conductive particle comprising a nonconductive core body and a conductive layer provided on the core body; and a second adhesive layer comprising a second adhesive component, wherein a volume proportion of the second adhesive component in the second adhesive layer is larger than a volume proportion of the first adhesive component in the first adhesive layer.
    Type: Application
    Filed: February 14, 2018
    Publication date: December 5, 2019
    Inventors: Tetsuyuki SHIRAKAWA, Hiroyuki IZAWA, Tatsuya KUMADA
  • Publication number: 20190367782
    Abstract: One aspect of the present invention is an adhesive film comprising a first adhesive layer comprising a first conductive particle that is a dendritic conductive particle; and a second adhesive layer containing a second conductive particle that is a conductive particle other than the first conductive particle, the second conductive particle comprising a nonconductive core body and a conductive layer provided on the core body.
    Type: Application
    Filed: February 14, 2018
    Publication date: December 5, 2019
    Inventors: Tetsuyuki SHIRAKAWA, Hiroyuki IZAWA, Takahiro FUKUI, Tatsuya KUMADA
  • Publication number: 20190241770
    Abstract: One aspect of the present invention relates to an adhesive composition used for connecting electronic members, the adhesive composition comprising: a first conductive particle that is a conductive particle having a projection capable of penetrating an oxide film formed on a surface of an electrode of the electronic member; and second conductive particle that is a conductive particle other than the first conductive particle, the second conductive particle having a nonconductive core body and a conductive layer provided on the core body.
    Type: Application
    Filed: August 29, 2017
    Publication date: August 8, 2019
    Inventors: Tetsuyuki SHIRAKAWA, Satoru MATSUMOTO, Yusuke ASAKAWA, Tatsuya KUMADA, Takahiro FUKUI
  • Publication number: 20190241771
    Abstract: A conductive film includes an elongated release film and a plurality of conductive adhesive film pieces provided on the release film. Then, the plurality of adhesive film pieces are arranged in a longitudinal direction X of the release film. For this reason, the adhesive film piece can be set to an arbitrary shape. Accordingly, it is possible to attach the adhesive film piece to adhesive surfaces having various shapes and to efficiently use the adhesive film piece.
    Type: Application
    Filed: September 26, 2017
    Publication date: August 8, 2019
    Inventors: Takashi TATSUZAWA, Kazuya MATSUDA, Yutaka TSUCHIDA, Takashi SEKI, Mitsuyoshi SHIMAMURA, Kengo SHINOHARA, Tetsuyuki SHIRAKAWA, Yasunori KAWABATA, Satoru MATSUMOTO