Patents by Inventor Hiroaki Matsubara

Hiroaki Matsubara 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: 20230386983
    Abstract: A semiconductor device includes first and second semiconductor elements, a conductive support, a third semiconductor element and a sealing resin. The conductive support includes first and second leads spaced apart in a first direction. The first semiconductor element is supported by the first lead. The second semiconductor element is supported by the second lead. The third semiconductor element, supported by the conductive support, insulates the first semiconductor element and the second semiconductor element. The sealing resin covers a part of the conductive support. A distance d1 between the first lead and the second lead in the first direction is greater than distance d0 given by Equation below. In Equation below, Y is the number of years of insulation life (years) expected for the semiconductor device, A and B are constants determined by a material of the sealing resin, and X is a voltage (kVrms). d ? 0 = Y A B × 0.
    Type: Application
    Filed: August 14, 2023
    Publication date: November 30, 2023
    Inventors: Yoshizo OSUMI, Taro NISHIOKA, Tomohira KIKUCHI, Kenji FUJII, Hiroaki MATSUBARA
  • Publication number: 20230378035
    Abstract: A semiconductor device includes: an electroconductive support including leads; a first semiconductor element supported by the support; a second semiconductor element supported by the support; a third semiconductor element supported by the support, electrically connected to the first and the second semiconductor elements, and insulating the first and the second semiconductor elements from each other; and a sealing resin covering the first, the second and the third semiconductor elements and a part of the support. The support includes: a first part overlapping with the first semiconductor element as viewed in a thickness direction of the leads; a second part overlapping with the second semiconductor element as viewed in the thickness direction; and a third part overlapping with the third semiconductor element as viewed in the thickness direction. The third part is made of a non-magnetic material having a relative permeability of less than 100.
    Type: Application
    Filed: August 1, 2023
    Publication date: November 23, 2023
    Inventor: Hiroaki MATSUBARA
  • Publication number: 20230352379
    Abstract: A semiconductor device includes a first die pad, a second die pad, a first semiconductor element, a second semiconductor element, an insulating element, first terminals, second terminals, and a sealing resin. The sealing resin has a top surface, a bottom surface, and first to third side surfaces. The first terminals include a first edge terminal located closest to the third side surface. The second terminals include a second edge terminal located closest to the third side surface. A first creepage distance, which is a shortest distance from the first edge terminal to the second edge terminal along the first side surface, the third side surface, and the second side surface, is shorter than a second creepage distance, which is a shortest distance from the first edge terminal to the second edge terminal along the first side surface, the bottom surface, and the second side surface.
    Type: Application
    Filed: July 7, 2023
    Publication date: November 2, 2023
    Inventor: Hiroaki MATSUBARA
  • Publication number: 20230352392
    Abstract: A semiconductor device includes: a chip; a circuit element formed in the chip; an insulating layer formed over the chip so as to cover the circuit element; a multilayer wiring region formed in the insulating layer and including a plurality of wirings laminated and arranged in a thickness direction of the insulating layer so as to be electrically connected to the circuit element; at least one insulating region which does not include the wirings in an entire region in the thickness direction of the insulating layer and is formed in a region outside the multilayer wiring region in the insulating layer; and at least one terminal electrode disposed over the insulating layer so as to face the chip with the at least one insulating region interposed between the at least one terminal electrode and the chip.
    Type: Application
    Filed: July 7, 2023
    Publication date: November 2, 2023
    Inventors: Hiroaki MATSUBARA, Kaori SUMITOMO, Maki MOROI, Naoki KINOSHITA
  • Publication number: 20230343684
    Abstract: A semiconductor device includes a semiconductor control element, a first drive element, a second drive element, a first insulating element and a second insulating element. In plan view, the first drive element and the second drive element are located on the opposite sides with respect to the semiconductor control element. The first insulating element is located between the semiconductor control element and the first drive element, relays a signal transmitted from the semiconductor control element to the first drive element, and provides electrical insulation between the semiconductor control element and the first drive element. The second insulating element is located between the semiconductor control element and the second drive element, relays a signal transmitted from the semiconductor control element to the second drive element, and provides electrical insulation between the semiconductor control element and the second drive element.
    Type: Application
    Filed: June 28, 2023
    Publication date: October 26, 2023
    Inventors: Tomohira KIKUCHI, Hiroaki MATSUBARA, Yoshizo OSUMI, Moe YAMAGUCHI, Ryohei UMENO
  • Patent number: 11798870
    Abstract: There is provided a semiconductor device including: a conductive support including a first die pad and a second die pad having a potential different from a potential of the first die pad; a first semiconductor element mounted on the first die pad; a second semiconductor element mounted on the second die pad; and a sealing resin that covers the first semiconductor element, the second semiconductor element, and at least a portion of the conductive support.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: October 24, 2023
    Assignee: ROHM CO., LTD.
    Inventors: Yoshizo Osumi, Hiroaki Matsubara, Tomohira Kikuchi
  • Publication number: 20230335475
    Abstract: A semiconductor device includes a first die pad, a second die pad, a first semiconductor element, a second semiconductor element, an insulating element, first terminals, second terminals, and a sealing resin. The sealing resin has a first side surface located on one side of a first direction, a second side surface located on the other side of the first direction, and third and fourth side surfaces that are separated from each other in a second direction orthogonal to both a thickness direction and the first direction and are connected to the first and second side surfaces. A first gate mark having a surface roughness larger than the other regions of the third side surface is formed on the third side surface.
    Type: Application
    Filed: June 22, 2023
    Publication date: October 19, 2023
    Inventor: Hiroaki MATSUBARA
  • Publication number: 20230335529
    Abstract: A semiconductor device includes: a semiconductor element; an island lead on which the semiconductor element is mounted; a terminal lead electrically connected to the semiconductor element; a wire connected to the semiconductor element and the terminal lead; and a sealing resin covering the semiconductor element, the island lead, the terminal lead, and the wire. The terminal lead includes a base member having an obverse surface facing in a thickness direction of the terminal lead, and a metal layer located between the obverse surface and the wire. The base member has a greater bonding strength with respect to the sealing resin than the metal layer. The obverse surface includes an opposing side facing the island lead. The obverse surface includes a first portion that includes at least a portion of the opposing side and that is exposed from the metal layer.
    Type: Application
    Filed: June 23, 2023
    Publication date: October 19, 2023
    Inventors: Ryohei UMENO, Taro NISHIOKA, Hiroaki MATSUBARA, Yoshizo OSUMI, Tomohira KIKUCHI, Moe YAMAGUCHI
  • Publication number: 20230298981
    Abstract: A semiconductor device includes a semiconductor element circuit, a conductive support and a sealing resin. The conductive support includes a die pad, first terminals spaced in a first direction, second terminals spaced in the first direction and opposite to the first terminals in a second direction perpendicular to the first direction, and a support terminal connected to the die pad. The sealing resin encapsulates portions of the first and second terminals, a portion of the support terminal, the semiconductor element circuit and the die pad. The sealing resin has two first side surfaces spaced apart in the second direction and two second side surfaces spaced apart in the first direction. The first terminals and second terminals are exposed from the first side surfaces, while none of the elements of the conductive support is exposed from the second side surfaces.
    Type: Application
    Filed: May 26, 2023
    Publication date: September 21, 2023
    Inventors: Hiroaki MATSUBARA, Yasumasa KASUYA
  • Patent number: 11742269
    Abstract: A semiconductor device includes a first die pad, a second die pad, a first semiconductor element, a second semiconductor element, an insulating element, first terminals, second terminals, and a sealing resin. The sealing resin has a top surface, a bottom surface, and first to third side surfaces. The first terminals include a first edge terminal located closest to the third side surface. The second terminals include a second edge terminal located closest to the third side surface. A first creepage distance, which is a shortest distance from the first edge terminal to the second edge terminal along the first side surface, the third side surface, and the second side surface, is shorter than a second creepage distance, which is a shortest distance from the first edge terminal to the second edge terminal along the first side surface, the bottom surface, and the second side surface.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: August 29, 2023
    Assignee: ROHM CO., LTD.
    Inventor: Hiroaki Matsubara
  • Patent number: 11735511
    Abstract: A semiconductor device includes: a chip; a circuit element formed in the chip; an insulating layer formed over the chip so as to cover the circuit element; a multilayer wiring region formed in the insulating layer and including a plurality of wirings laminated and arranged in a thickness direction of the insulating layer so as to be electrically connected to the circuit element; at least one insulating region which does not include the wirings in an entire region in the thickness direction of the insulating layer and is formed in a region outside the multilayer wiring region in the insulating layer; and at least one terminal electrode disposed over the insulating layer so as to face the chip with the at least one insulating region interposed between the at least one terminal electrode and the chip.
    Type: Grant
    Filed: July 1, 2021
    Date of Patent: August 22, 2023
    Assignee: ROHM CO., LTD.
    Inventors: Hiroaki Matsubara, Kaori Sumitomo, Maki Moroi, Naoki Kinoshita
  • Patent number: 11728253
    Abstract: A semiconductor device includes a first die pad, a second die pad, a first semiconductor element, a second semiconductor element, an insulating element, first terminals, second terminals, and a sealing resin. The sealing resin has a first side surface located on one side of a first direction, a second side surface located on the other side of the first direction, and third and fourth side surfaces that are separated from each other in a second direction orthogonal to both a thickness direction and the first direction and are connected to the first and second side surfaces. A first gate mark having a surface roughness larger than the other regions of the third side surface is formed on the third side surface. When viewed along the second direction, the first gate mark overlaps a pad gap provided between the first die pad and the second die pad in the first direction.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: August 15, 2023
    Assignee: ROHM CO., LTD.
    Inventor: Hiroaki Matsubara
  • Patent number: 11699641
    Abstract: A semiconductor device includes a semiconductor element circuit, a conductive support and a sealing resin. The conductive support includes a die pad, first terminals spaced in a first direction, second terminals spaced in the first direction and opposite to the first terminals in a second direction perpendicular to the first direction, and a support terminal connected to the die pad. The sealing resin encapsulates portions of the first and second terminals, a portion of the support terminal, the semiconductor element circuit and the die pad. The sealing resin has two first side surfaces spaced apart in the second direction and two second side surfaces spaced apart in the first direction. The first terminals and second terminals are exposed from the first side surfaces, while none of the elements of the conductive support is exposed from the second side surfaces.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: July 11, 2023
    Assignee: ROHM CO., LTD.
    Inventors: Hiroaki Matsubara, Yasumasa Kasuya
  • Publication number: 20220268560
    Abstract: A dart may comprise—in order from the front thereof—a point, a barrel, a shaft, and a flight. The flight may comprise a plurality of fins. The fins may comprise mesh-like reinforcing ribs that protrude from surfaces thereof. The fins may further comprise, at peripheries thereof, fin rims formed so as to be of increased thickness. Reinforcing ribs may be formed over the approximate entireties of the fins. The shaft may comprise an insertion portion at the back end thereof. The flight may comprise a central axial hole having an opening at the front end thereof. The shaft may be removably installable with respect to the flight by virtue of a cap-like arrangement by which the insertion portion is inserted within, and is coupled and secured to, the central axial hole. The central axial hole may be formed from the front end of the flight to the back end thereof.
    Type: Application
    Filed: May 15, 2022
    Publication date: August 25, 2022
    Inventors: Hiroaki MATSUBARA, Masayuki MATSUBARA
  • Publication number: 20220102252
    Abstract: There is provided a semiconductor device including: a conductive support including a first die pad and a second die pad having a potential different from a potential of the first die pad; a first semiconductor element mounted on the first die pad; a second semiconductor element mounted on the second die pad; and a sealing resin that covers the first semiconductor element, the second semiconductor element, and at least a portion of the conductive support.
    Type: Application
    Filed: September 7, 2021
    Publication date: March 31, 2022
    Inventors: Yoshizo OSUMI, Hiroaki MATSUBARA, Tomohira KIKUCHI
  • Publication number: 20220077082
    Abstract: A semiconductor device includes a conductive support member, a first semiconductor element, a second semiconductor element, an insulating element, and a sealing resin. The conductive support member includes a first die pad and a second die pad, which are separated from each other in a first direction. The first die pad and the second die pad overlap each other when viewed along the first direction. When viewed along a thickness direction, a peripheral edge of the first die pad has a first near-angle portion including a first end portion in a second direction orthogonal to both the thickness direction and the first direction. The first near-angle portion is separated from the second die pad in the first direction toward the first end portion in the second direction.
    Type: Application
    Filed: September 3, 2021
    Publication date: March 10, 2022
    Inventors: Yoshizo OSUMI, Hiroaki MATSUBARA, Tomohira KIKUCHI
  • Publication number: 20220077035
    Abstract: A semiconductor device includes a first die pad, a second die pad, a first semiconductor element, a second semiconductor element, an insulating element, first terminals, second terminals, and a sealing resin. The sealing resin has a top surface, a bottom surface, and first to third side surfaces. The first terminals include a first edge terminal located closest to the third side surface. The second terminals include a second edge terminal located closest to the third side surface. A first creepage distance, which is a shortest distance from the first edge terminal to the second edge terminal along the first side surface, the third side surface, and the second side surface, is shorter than a second creepage distance, which is a shortest distance from the first edge terminal to the second edge terminal along the first side surface, the bottom surface, and the second side surface.
    Type: Application
    Filed: September 3, 2021
    Publication date: March 10, 2022
    Inventor: Hiroaki MATSUBARA
  • Publication number: 20220077037
    Abstract: A semiconductor device includes a conductive support member, a first semiconductor element, and a second semiconductor element. The conductive support member includes a first die pad and a second die pad separated from each other in a first direction. The first die pad and the second die pad overlap each other when viewed along the first direction. The first die pad has a first main surface mounting the first semiconductor element, and a first back surface opposing the first main surface. The second die pad has a second main surface mounting the second semiconductor element, and a second back surface opposing the second main surface. When viewed along a second direction, a distance in the first direction between the first back surface and the second back surface is larger than a distance in the first direction between the first main surface and the second main surface.
    Type: Application
    Filed: September 3, 2021
    Publication date: March 10, 2022
    Inventors: Yoshizo OSUMI, Hiroaki MATSUBARA, Tomohira KIKUCHI
  • Publication number: 20220077036
    Abstract: A semiconductor device includes a first die pad, a second die pad, a first semiconductor element, a second semiconductor element, an insulating element, first terminals, second terminals, and a sealing resin. The sealing resin has a top surface, a bottom surface, and a first side surface connected to the top surface and the bottom surface. The first side surface includes a first region connected to the top surface, a second region connected to the bottom surface, and a third region connected to the first region and the second region, the plurality of first terminals being exposed to the third region. A surface roughness of each of the top surface, the bottom surface, the first region, and the second region is larger than a surface roughness of the third region.
    Type: Application
    Filed: September 3, 2021
    Publication date: March 10, 2022
    Inventor: Hiroaki MATSUBARA
  • Publication number: 20220077034
    Abstract: A semiconductor device includes a first die pad, a second die pad, a first semiconductor element, a second semiconductor element, an insulating element, first terminals, second terminals, and a sealing resin. The sealing resin has a first side surface located on one side of a first direction, a second side surface located on the other side of the first direction, and third and fourth side surfaces that are separated from each other in a second direction orthogonal to both a thickness direction and the first direction and are connected to the first and second side surfaces. A first gate mark having a surface roughness larger than the other regions of the third side surface is formed on the third side surface. When viewed along the second direction, the first gate mark overlaps a pad gap provided between the first die pad and the second die pad in the first direction.
    Type: Application
    Filed: September 3, 2021
    Publication date: March 10, 2022
    Inventor: Hiroaki MATSUBARA