Patents by Inventor Masaomi MIYAZAWA

Masaomi MIYAZAWA 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: 20230170292
    Abstract: A semiconductor device includes a first bus bar, a second bus bar, a first terminal, and a second terminal. The first terminal includes one or more planar portions, and the second terminal includes one or more planar portions. The one or more planar portions of the first terminal and the one or more planar portions of the second terminal are arranged parallel to and opposite each other. One of the first bus bar and the second bus bar covers a gap between a portion of the first terminal connected to the first bus bar and a portion of the second terminal connected to the second bus bar in plan view.
    Type: Application
    Filed: August 30, 2022
    Publication date: June 1, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masaomi MIYAZAWA, Satoshi MIYAHARA
  • Publication number: 20230005823
    Abstract: According to the present disclosure, a semiconductor device includes a semiconductor chip, a frame, a projection projecting from the frame, a lead in which a projection insertion portion into which the projection is to be inserted is formed, and which directly contacts the frame to electrically connect the semiconductor chip to the frame and a first bonding material configured to bond the projection to the lead.
    Type: Application
    Filed: February 2, 2022
    Publication date: January 5, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventor: Masaomi MIYAZAWA
  • Patent number: 10790242
    Abstract: According to the present invention, a semiconductor device includes a substrate having a metallic pattern formed on a top surface of the substrate, a semiconductor chip provided on the metallic pattern, a back surface electrode terminal in flat plate form connected to the metallic pattern with a wire, a front surface electrode terminal in flat plate form, the front surface electrode terminal being in parallel to the back surface electrode terminal above the back surface electrode terminal, extending immediately above the semiconductor chip, and being directly joined to a top surface of the semiconductor chip, a case surrounding the substrate and a seal material for sealing an inside of the case.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: September 29, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tetsuo Yamashita, Tomohiro Hieda, Masaomi Miyazawa
  • Publication number: 20190244913
    Abstract: According to the present invention, a semiconductor device includes a substrate having a metallic pattern formed on a top surface of the substrate, a semiconductor chip provided on the metallic pattern, a back surface electrode terminal in flat plate form connected to the metallic pattern with a wire, a front surface electrode terminal in flat plate form, the front surface electrode terminal being in parallel to the back surface electrode terminal above the back surface electrode terminal, extending immediately above the semiconductor chip, and being directly joined to a top surface of the semiconductor chip, a case surrounding the substrate and a seal material for sealing an inside of the case.
    Type: Application
    Filed: April 16, 2019
    Publication date: August 8, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tetsuo YAMASHITA, Tomohiro HIEDA, Masaomi MIYAZAWA
  • Patent number: 10347593
    Abstract: According to the present invention, a semiconductor device includes a substrate having a metallic pattern formed on a top surface of the substrate, a semiconductor chip provided on the metallic pattern, a back surface electrode terminal in flat plate form connected to the metallic pattern with a wire, a front surface electrode terminal in flat plate form, the front surface electrode terminal being in parallel to the back surface electrode terminal above the back surface electrode terminal, extending immediately above the semiconductor chip, and being directly joined to a top surface of the semiconductor chip, a case surrounding the substrate and a seal material for sealing an inside of the case.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: July 9, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tetsuo Yamashita, Tomohiro Hieda, Masaomi Miyazawa
  • Publication number: 20180301421
    Abstract: According to the present invention, a semiconductor device includes a substrate having a metallic pattern formed on a top surface of the substrate, a semiconductor chip provided on the metallic pattern, a back surface electrode terminal in flat plate form connected to the metallic pattern with a wire, a front surface electrode terminal in flat plate form, the front surface electrode terminal being in parallel to the back surface electrode terminal above the back surface electrode terminal, extending immediately above the semiconductor chip, and being directly joined to a top surface of the semiconductor chip, a case surrounding the substrate and a seal material for sealing an inside of the case.
    Type: Application
    Filed: December 14, 2017
    Publication date: October 18, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tetsuo YAMASHITA, Tomohiro HIEDA, Masaomi MIYAZAWA
  • Patent number: 9721861
    Abstract: A semiconductor device includes a semiconductor element and a ceramic circuit substrate on which the semiconductor element is mounted. The ceramic circuit substrate includes a ceramic substrate having one surface and the other surface facing each other, a metal circuit board joined to the one surface of the ceramic substrate and electrically connected to the semiconductor element, and a metal heat-dissipation plate joined to the other surface of the ceramic substrate. The metal circuit board is greater in thickness than the metal heat-dissipation plate. A surface of the metal heat-dissipation plate on a side opposite to the ceramic substrate is larger in area than a surface of the metal circuit board on a side opposite to the ceramic substrate. Thereby, a semiconductor device capable of suppressing warpage of the ceramic substrate can be achieved.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: August 1, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshitaka Otsubo, Takuya Takahashi, Masaomi Miyazawa, Tetsuo Yamashita, Tomohiro Hieda, Mituharu Tabata
  • Patent number: 9397014
    Abstract: An electrode includes an extending portion extending such that both ends thereof get into a first recessed portion and a second recessed portion provided in a first inner wall and a second inner wall, respectively, facing each other in a lateral direction of a case. The extent to which both the ends of the extending portion get into is set such that positions of both the ends thereof in a case where both the ends are narrowed toward a midpoint therebetween to reduce a length of the extending portion to 70% of the length of the extending portion exist between positions of the first and second inner walls in a case where the first and second inner walls are each narrowed toward a midpoint therebetween by 10% of the distance between the first and second inner walls.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: July 19, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masaomi Miyazawa, Mituharu Tabata, Takuya Takahashi
  • Publication number: 20160095213
    Abstract: A semiconductor device includes a semiconductor element and a ceramic circuit substrate on which the semiconductor element is mounted. The ceramic circuit substrate includes a ceramic substrate having one surface and the other surface facing each other, a metal circuit board joined to the one surface of the ceramic substrate and electrically connected to the semiconductor element, and a metal heat-dissipation plate joined to the other surface of the ceramic substrate. The metal circuit board is greater in thickness than the metal heat-dissipation plate. A surface of the metal heat-dissipation plate on a side opposite to the ceramic substrate is larger in area than a surface of the metal circuit board on a side opposite to the ceramic substrate. Thereby, a semiconductor device capable of suppressing warpage of the ceramic substrate can be achieved.
    Type: Application
    Filed: April 15, 2015
    Publication date: March 31, 2016
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshitaka OTSUBO, Takuya TAKAHASHI, Masaomi MIYAZAWA, Tetsuo YAMASHITA, Tomohiro HIEDA, Mituharu TABATA
  • Patent number: 9171776
    Abstract: A semiconductor cooling device includes: a cooling medium flow channel, through which a cooling medium for cooling a semiconductor chip flows; a laminar flow section which is provided in a region upstream of the cooling medium flow channel and allows the cooling medium to flow in the form of laminar flow; and a turbulent flow section which is provided in a region downstream of the laminar flow section in the cooling medium flow channel and allows the cooling medium, which flows in the form of laminar flow from the laminar flow section, to flow in the form of turbulent flow.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: October 27, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventor: Masaomi Miyazawa
  • Publication number: 20150270186
    Abstract: An electrode includes an extending portion extending such that both ends thereof get into a first recessed portion and a second recessed portion provided in a first inner wall and a second inner wall, respectively, facing each other in a lateral direction of a case. The extent to which both the ends of the extending portion get into is set such that positions of both the ends thereof in a case where both the ends are narrowed toward a midpoint therebetween to reduce a length of the extending portion to 70% of the length of the extending portion exist between positions of the first and second inner walls in a case where the first and second inner walls are each narrowed toward a midpoint therebetween by 10% of the distance between the first and second inner walls.
    Type: Application
    Filed: December 10, 2014
    Publication date: September 24, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masaomi MIYAZAWA, Mituharu TABATA, Takuya TAKAHASHI
  • Patent number: 9123697
    Abstract: A semiconductor cooling device includes: a cooling medium flow channel, through which a cooling medium for cooling a semiconductor chip flows; a laminar flow section which is provided in a region upstream of the cooling medium flow channel and allows the cooling medium to flow in the form of laminar flow; and a turbulent flow section which is provided in a region downstream of the laminar flow section in the cooling medium flow channel and allows the cooling medium, which flows in the form of laminar flow from the laminar flow section, to flow in the form of turbulent flow.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: September 1, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventor: Masaomi Miyazawa
  • Publication number: 20150243581
    Abstract: A semiconductor cooling device includes: a cooling medium flow channel, through which a cooling medium for cooling a semiconductor chip flows; a laminar flow section which is provided in a region upstream of the cooling medium flow channel and allows the cooling medium to flow in the form of laminar flow; and a turbulent flow section which is provided in a region downstream of the laminar flow section in the cooling medium flow channel and allows the cooling medium, which flows in the form of laminar flow from the laminar flow section, to flow in the form of turbulent flow.
    Type: Application
    Filed: May 7, 2015
    Publication date: August 27, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Masaomi MIYAZAWA
  • Publication number: 20140319674
    Abstract: A semiconductor cooling device includes: a cooling medium flow channel, through which a cooling medium for cooling a semiconductor chip flows; a laminar flow section which is provided in a region upstream of the cooling medium flow channel and allows the cooling medium to flow in the form of laminar flow; and a turbulent flow section which is provided in a region downstream of the laminar flow section in the cooling medium flow channel and allows the cooling medium, which flows in the form of laminar flow from the laminar flow section, to flow in the form of turbulent flow.
    Type: Application
    Filed: December 31, 2013
    Publication date: October 30, 2014
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Masaomi MIYAZAWA