Patents by Inventor Daisuke Kimijima

Daisuke Kimijima 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).

  • Publication number: 20220157673
    Abstract: A semiconductor device includes a substrate having a first main surface on which a semiconductor chip is mounted, a case adhered to a peripheral edge of the substrate to form a recess in which the semiconductor chip is disposed, a cover disposed in the case with a first gap in a direction parallel to the first main surface between the cover and the case such that a second main surface of the cover faces the first main surface, and a first adhesive layer embedded in the first gap. The first adhesive layer has a first protruding portion and/or a second protruding portion, the first and second protruding portions respectively protruding outside and inside the recess from the first gap while being in contact with the inner walls of the case and respectively a third main surface of the cover opposite to the second main surface, and the second main surface.
    Type: Application
    Filed: September 23, 2021
    Publication date: May 19, 2022
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventor: Daisuke KIMIJIMA
  • Patent number: 9590622
    Abstract: In a semiconductor module, second semiconductor chips (e.g., diodes) are disposed closer to a laminated substrate than first semiconductor chips (MOSFETs). When a control signal supplied to gate electrodes of the first semiconductor chips (MOSFETs) is off, an electric current produced by a voltage from source terminals to a drain board mainly flows through the second semiconductor chips.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: March 7, 2017
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Tetsuya Inaba, Yoshinari Ikeda, Katsumi Taniguchi, Daisuke Kimijima
  • Publication number: 20170047923
    Abstract: In a semiconductor module, second semiconductor chips (e.g., diodes) are disposed closer to a laminated substrate than first semiconductor chips (MOSFETs). When a control signal supplied to gate electrodes of the first semiconductor chips (MOSFETs) is off, an electric current produced by a voltage from source terminals to a drain board mainly flows through the second semiconductor chips.
    Type: Application
    Filed: July 1, 2016
    Publication date: February 16, 2017
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Tetsuya INABA, Yoshinari IKEDA, Katsumi TANIGUCHI, Daisuke KIMIJIMA
  • Patent number: 9548253
    Abstract: A method of manufacturing a semiconductor device and a semiconductor device that is manufactured by the method. In the method of manufacturing a semiconductor device, a releasing sheet is disposed in close contact with a hole of an aluminum plate having the recessed hole, and a skeleton structure of a semiconductor device is put into the recessed hole. Then, liquid epoxy resin is poured into the recessed hole. After hardening, the epoxy resin body 10 including the skeleton structure is taken out from the recessed hole to complete manufacturing the semiconductor device. Using a simple molding jig including the aluminum plate, and covering the skeleton structure with the epoxy resin body, a highly reliable semiconductor device with a case-less construction can be manufactured.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: January 17, 2017
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Kei Yamaguchi, Yuji Ichimura, Daisuke Kimijima
  • Patent number: 9524919
    Abstract: A semiconductor module includes a semiconductor element having a gate electrode and source electrode on the front surface, and a drain electrode on the rear surface, the drain electrode being electrically connected to the front surface of a drain plate; a laminated substrate having, on the front surface of an insulating plate, a first circuit plate to which the gate electrode is electrically connected, and a second circuit plate to which the source electrode is electrically connected, and which is disposed on the front surface of the drain plate; a gate terminal disposed on the first circuit plate; a source terminal disposed on the second circuit plate; and a cover disposed opposite to the front surface of the drain plate, and having an opening in which the gate terminal and the source terminal are positioned and a guide groove contacting the opening and extending to the outer peripheral portion.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: December 20, 2016
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Tetsuya Inaba, Yoshinari Ikeda, Motohito Hori, Daisuke Kimijima
  • Publication number: 20160293517
    Abstract: A semiconductor module includes a semiconductor element having a gate electrode and source electrode on the front surface, and a drain electrode on the rear surface, the drain electrode being electrically connected to the front surface of a drain plate; a laminated substrate having, on the front surface of an insulating plate, a first circuit plate to which the gate electrode is electrically connected, and a second circuit plate to which the source electrode is electrically connected, and which is disposed on the front surface of the drain plate; a gate terminal disposed on the first circuit plate; a source terminal disposed on the second circuit plate; and a cover disposed opposite to the front surface of the drain plate, and having an opening in which the gate terminal and the source terminal are positioned and a guide groove contacting the opening and extending to the outer peripheral portion.
    Type: Application
    Filed: March 14, 2016
    Publication date: October 6, 2016
    Inventors: Tetsuya INABA, Yoshinari IKEDA, Motohito HORI, Daisuke KIMIJIMA
  • Patent number: 9123639
    Abstract: A power semiconductor module available under environments of high temperature has enhanced heat resistance of silicone gel filled up in a case. A power semiconductor module comprises a power semiconductor element, an insulating substrate mounted with the power semiconductor element, a resin case containing the power semiconductor element and the insulating substrate, a silicone gel injected into the resin case, and a sheet composed of a silicone rubber or silicone resin, disposed between the resin case and the silicone gel within the resin case.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: September 1, 2015
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Daisuke Kimijima, Yuji Ichimura
  • Patent number: 9035446
    Abstract: Provided is a power module. The power module includes a power semiconductor chip. The power module further includes a case that accommodates the power semiconductor chip. A silicone gel seals the power semiconductor chip within the case. The silicone gel including a heat-resistant silicone gel containing 20 to 100 mass ppm of a metal complex comprising a metal selected from a group consisting of iron and platinum.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: May 19, 2015
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Daisuke Kimijima, Yuji Ichimura
  • Publication number: 20150115428
    Abstract: A power semiconductor module available under environments of high temperature has enhanced heat resistance of silicone gel filled up in a case. A power semiconductor module comprises a power semiconductor element, an insulating substrate mounted with the power semiconductor element, a resin case containing the power semiconductor element and the insulating substrate, a silicone gel injected into the resin case, and a sheet composed of a silicone rubber or silicone resin, disposed between the resin case and the silicone gel within the resin case.
    Type: Application
    Filed: October 10, 2014
    Publication date: April 30, 2015
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Daisuke KIMIJIMA, Yuji ICHIMURA
  • Publication number: 20150069601
    Abstract: A method of manufacturing a semiconductor device and a semiconductor device that is manufactured by the method. In the method of manufacturing a semiconductor device, a releasing sheet is disposed in close contact with a hole of an aluminum plate having the recessed hole, and a skeleton structure of a semiconductor device is put into the recessed hole. Then, liquid epoxy resin is poured into the recessed hole. After hardening, the epoxy resin body 10 including the skeleton structure is taken out from the recessed hole to complete manufacturing the semiconductor device. Using a simple molding jig including the aluminum plate, and covering the skeleton structure with the epoxy resin body, a highly reliable semiconductor device with a case-less construction can be manufactured.
    Type: Application
    Filed: August 12, 2014
    Publication date: March 12, 2015
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Kei YAMAGUCHI, Yuji Ichimura, Daisuke Kimijima
  • Publication number: 20140319669
    Abstract: Provided is a power module. The power module includes a power semiconductor chip. The power module further includes a case that accommodates the power semiconductor chip. A silicone gel seals the power semiconductor chip within the case. The silicone gel including a heat-resistant silicone gel containing 20 to 100 mass ppm of a metal complex comprising a metal selected from a group consisting of iron and platinum.
    Type: Application
    Filed: April 25, 2014
    Publication date: October 30, 2014
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Daisuke KIMIJIMA, Yuji ICHIMURA
  • Publication number: 20110303286
    Abstract: A solar cell module includes a metal plate, a solar cell that is fixed to the metal plate with sealing members interposed therebetween, and a surface protective film that covers the solar cell. A cutting process is performed on an outer portion of the solar cell, and the cut surface is covered with a non-solvent-based resin material. The solar cell module has a rectangular shape and the corners thereof are cut in an L-shape. Protruding piece portions formed by the cut-out portions are bent such that the solar cell module has a box shape.
    Type: Application
    Filed: May 27, 2011
    Publication date: December 15, 2011
    Applicant: Fuji Electric Co., Ltd.
    Inventors: Hiroki Kogawa, Daisuke Kimijima