Patents by Inventor Takumi Kanda

Takumi Kanda 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: 20240079296
    Abstract: A semiconductor device includes a first conductive plate, a second conductive plate, first switching elements, second switching elements, a first supply terminal and a second supply terminal. The first and second conductive plates are spaced apart from each other in a first direction. The first switching elements are bonded to the first conductive plate, and are electrically connected to the second conductive plate. The second switching elements are bonded to the second conductive plate. The first supply terminal is bonded to the first conductive plate. The second supply terminal has a region that overlaps with the first supply terminal as viewed in a plan view. The second supply terminal is spaced apart from the first conductive plate and the first supply terminal in a thickness direction perpendicular to the first direction. The second supply terminal is electrically connected to the second switching elements.
    Type: Application
    Filed: April 26, 2023
    Publication date: March 7, 2024
    Inventors: Takumi KANDA, Masaaki MATSUO, Soichiro TAKAHASHI, Yoshitoki INAMI, Kaito INOUE
  • Patent number: 11923278
    Abstract: A semiconductor module includes a semiconductor device and bus bar. The device includes an insulating substrate, conductive member, switching elements, and first/second input terminals. The substrate has main/back surfaces opposite in a thickness direction, with the conductive member disposed on the main surface. The switching elements are connected to the conductive member. The first input terminal, including a first terminal portion, is connected to the conductive member. The second input terminal, including a second terminal portion overlapping with the first terminal portion in the thickness direction, is connected to the switching elements. The second input terminal is separate from the first input terminal and conductive member in the thickness direction. The bus bar includes first/second terminals. The second terminal, separate from the first terminal in the thickness direction, partially overlaps with the first terminal in the thickness direction.
    Type: Grant
    Filed: April 18, 2023
    Date of Patent: March 5, 2024
    Assignee: ROHM CO., LTD.
    Inventors: Masashi Hayashiguchi, Takumi Kanda
  • Publication number: 20240006368
    Abstract: A semiconductor device includes: a semiconductor element including a first electrode; a conductive member including a first bonding part facing the first electrode; a bonding layer interposed between the first electrode and the first bonding part; and a regulator bonded to at least one of the first electrode and the first bonding part. The regulator faces the bonding layer in a direction orthogonal to a thickness direction of the semiconductor element.
    Type: Application
    Filed: September 18, 2023
    Publication date: January 4, 2024
    Inventor: Takumi KANDA
  • Publication number: 20230420321
    Abstract: A semiconductor device includes: first and second die pads spaced from each other in a first direction; a semiconductor element mounted on at least one of the first and the second die pads; and a sealing resin. The sealing resin is longer in the first direction than in a second direction. The first die pad has a first end surface, a second end surface, and a first corner end surface. The first corner end surface is a flat surface that is covered with the sealing resin, and that is inclined relative to the first end surface and the second end surface. The first corner end surface has a first inclination angle relative to the first end surface and a second inclination angle relative to the second end surface. Either the first inclination angle or the second inclination angle is in the range of 60° to 85° both inclusive.
    Type: Application
    Filed: September 11, 2023
    Publication date: December 28, 2023
    Inventor: Takumi KANDA
  • Publication number: 20230352376
    Abstract: A semiconductor device includes a first die pad having a first obverse face oriented in a thickness direction, a semiconductor element having an electrode located on a side to which the first obverse face is oriented in the thickness direction, the semiconductor element being connected to the first obverse face, a conductive material electrically connected to the electrode, and a first bonding layer electrically connecting the conductive material and the electrode. The conductive material includes a main portion, a first connecting portion electrically connected to the electrode via the first bonding layer, a first joint portion connecting the main portion and the first connecting portion, and a distal end portion spaced apart from the first joint portion, and connected to the first connecting portion. As viewed along an in-plane direction of the first obverse face, the distal end portion is inclined so as to be farther from the electrode, in a direction away from the first connecting portion.
    Type: Application
    Filed: June 21, 2021
    Publication date: November 2, 2023
    Inventor: Takumi KANDA
  • Publication number: 20230343755
    Abstract: A semiconductor device includes two first switching elements mounted on a first die pad. Each of the two first switching elements includes a first control electrode connected to a first control lead by a first control connection member. The first control connection member includes a lead connector connected to the first control lead and electrode connectors connected between the lead connector and the first control electrodes of the first switching elements. The electrode connectors are equal in length. Thus, the connection members between the first control lead and the first control electrodes of the first switching elements are equal in length.
    Type: Application
    Filed: July 27, 2021
    Publication date: October 26, 2023
    Inventors: Kenji HAYASHI, Takumi KANDA, Ryosuke FUKUDA
  • Publication number: 20230299036
    Abstract: A semiconductor device includes: a first conductive plate having a first obverse face facing in a thickness direction; a second conductive plate located apart from the first conductive plate in a first direction crossing the thickness direction and having a second obverse face facing in the same direction as the first obverse face; semiconductor elements joined to the first obverse face; and a conductive member. The semiconductor elements each include an electrode opposite to the first obverse face. The conductive member includes a main body portion, first junction portions individually and electrically joined to the electrodes of the semiconductor elements, and a second junction portion electrically joined to the second obverse face. Moreover, the conductive member includes a first connection portion connecting the main body portion and the first junction portions, and a second connection portion connecting the main body portion and the second junction portion.
    Type: Application
    Filed: July 20, 2021
    Publication date: September 21, 2023
    Inventors: Takumi KANDA, Ryosuke FUKUDA
  • Publication number: 20230275009
    Abstract: A semiconductor module includes a semiconductor device and bus bar. The device includes an insulating substrate, conductive member, switching elements, and first/second input terminals. The substrate has main/back surfaces opposite in a thickness direction, with the conductive member disposed on the main surface. The switching elements are connected to the conductive member. The first input terminal, including a first terminal portion, is connected to the conductive member. The second input terminal, including a second terminal portion overlapping with the first terminal portion in the thickness direction, is connected to the switching elements. The second input terminal is separate from the first input terminal and conductive member in the thickness direction. The bus bar includes first/second terminals. The second terminal, separate from the first terminal in the thickness direction, partially overlaps with the first terminal in the thickness direction.
    Type: Application
    Filed: April 18, 2023
    Publication date: August 31, 2023
    Inventors: Masashi HAYASHIGUCHI, Takumi KANDA
  • Publication number: 20230245959
    Abstract: A semiconductor device includes a first die pad having a main surface, a second die pad having a second main surface, a first switching element connected to the first main surface, a second switching element connected to the second main surface, a first connecting member connecting the first main surface electrode of the first switching element to the second die pad, an encapsulation resin encapsulating the first switching element, the second switching element, the first die pad, the second die pad, and the first connecting member, and leads projecting out of one of the resin side surfaces of the encapsulation resin.
    Type: Application
    Filed: June 23, 2021
    Publication date: August 3, 2023
    Inventors: Kenji HAYASHI, Takumi KANDA, Noriaki KAWAMOTO
  • Patent number: 11670572
    Abstract: A semiconductor device includes a first conductive plate, a second conductive plate, first switching elements, second switching elements, a first supply terminal and a second supply terminal. The first and second conductive plates are spaced apart from each other in a first direction. The first switching elements are bonded to the first conductive plate, and are electrically connected to the second conductive plate. The second switching elements are bonded to the second conductive plate. The first supply terminal is bonded to the first conductive plate. The second supply terminal has a region that overlaps with the first supply terminal as viewed in a plan view. The second supply terminal is spaced apart from the first conductive plate and the first supply terminal in a thickness direction perpendicular to the first direction. The second supply terminal is electrically connected to the second switching elements.
    Type: Grant
    Filed: November 18, 2021
    Date of Patent: June 6, 2023
    Assignee: ROHM CO., LTD.
    Inventors: Takumi Kanda, Masaaki Matsuo, Soichiro Takahashi, Yoshitoki Inami, Kaito Inoue
  • Patent number: 11664298
    Abstract: A semiconductor module includes a semiconductor device and bus bar. The device includes an insulating substrate, conductive member, switching elements, and first/second input terminals. The substrate has main/back surfaces opposite in a thickness direction, with the conductive member disposed on the main surface. The switching elements are connected to the conductive member. The first input terminal, including a first terminal portion, is connected to the conductive member. The second input terminal, including a second terminal portion overlapping with the first terminal portion in the thickness direction, is connected to the switching elements. The second input terminal is separate from the first input terminal and conductive member in the thickness direction. The bus bar includes first/second terminals. The second terminal, separate from the first terminal in the thickness direction, partially overlaps with the first terminal in the thickness direction.
    Type: Grant
    Filed: April 15, 2022
    Date of Patent: May 30, 2023
    Assignee: ROHM CO., LTD.
    Inventors: Masashi Hayashiguchi, Takumi Kanda
  • Publication number: 20220384297
    Abstract: A semiconductor device includes a first insulation member, a first drive conductive layer, a first semiconductor element, a second insulation member, a second drive conductive layer, a second semiconductor element, a connection member, and an encapsulation resin. The encapsulation resin encapsulates the first semiconductor element, the second semiconductor element, and the connection member. The connection member has a higher thermal conductivity than the encapsulation resin. The connection member forms a heat conduction path between the first insulation member and/or the first drive conductive layer and the second insulation member and/or the second drive conductive layer. The connection member has a higher thermal conductivity than the encapsulation resin.
    Type: Application
    Filed: December 24, 2020
    Publication date: December 1, 2022
    Inventor: Takumi KANDA
  • Publication number: 20220246507
    Abstract: A semiconductor module includes a semiconductor device and bus bar. The device includes an insulating substrate, conductive member, switching elements, and first/second input terminals. The substrate has main/back surfaces opposite in a thickness direction, with the conductive member disposed on the main surface. The switching elements are connected to the conductive member. The first input terminal, including a first terminal portion, is connected to the conductive member. The second input terminal, including a second terminal portion overlapping with the first terminal portion in the thickness direction, is connected to the switching elements. The second input terminal is separate from the first input terminal and conductive member in the thickness direction. The bus bar includes first/second terminals. The second terminal, separate from the first terminal in the thickness direction, partially overlaps with the first terminal in the thickness direction.
    Type: Application
    Filed: April 15, 2022
    Publication date: August 4, 2022
    Inventors: Masashi HAYASHIGUCHI, Takumi KANDA
  • Publication number: 20220165719
    Abstract: A semiconductor device includes a support member, a first switching element, a second switching element, a first passive element, a second passive element, and an electrical conductor. The support member includes a plurality of wiring parts, and the plurality of wiring parts include a first wiring section and a second wiring section spaced apart from each other in a first direction perpendicular to the thickness direction of the support member. The first switching element is electrically connected to the first wiring section. The second switching element is electrically connected to the first switching element and the second wiring section. The first passive element has a first electrode and a second electrode, and the first electrode is bonded to the first wiring section. The second passive element has a third electrode and a fourth electrode, and the fourth electrode is bonded to the second wiring section. The electrical conductor connects the second electrode and the third electrode to each other.
    Type: Application
    Filed: April 21, 2020
    Publication date: May 26, 2022
    Inventor: Takumi KANDA
  • Publication number: 20220148949
    Abstract: A semiconductor device includes a substrate including a main surface, a semiconductor element mounted on the main surface, a drive pad, and drive wires. The semiconductor element includes a front surface that faces in a same direction as the main surface and a drive electrode formed on the front surface and containing SiC. The drive wires are spaced apart from each other and connect the drive electrode to the drive pad. The drive wires include a first drive wire and a second drive wire configured to be a combination of furthermost ones of the drive wires. The first drive wire and the second drive wire are separated from each other by a greater distance at the drive pad than at the drive electrode as viewed in a first direction that is perpendicular to the main surface of the substrate.
    Type: Application
    Filed: May 13, 2020
    Publication date: May 12, 2022
    Inventors: Kenji HAYASHI, Takumi KANDA, Hidetoshi ABE
  • Patent number: 11328985
    Abstract: A semiconductor module includes a semiconductor device and bus bar. The device includes an insulating substrate, conductive member, switching elements, and first/second input terminals. The substrate has main/back surfaces opposite in a thickness direction, with the conductive member disposed on the main surface. The switching elements are connected to the conductive member. The first input terminal, including a first terminal portion, is connected to the conductive member. The second input terminal, including a second terminal portion overlapping with the first terminal portion in the thickness direction, is connected to the switching elements. The second input terminal is separate from the first input terminal and conductive member in the thickness direction. The bus bar includes first/second terminals. The second terminal, separate from the first terminal in the thickness direction, partially overlaps with the first terminal in the thickness direction.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: May 10, 2022
    Assignee: ROHM CO., LTD.
    Inventors: Masashi Hayashiguchi, Takumi Kanda
  • Publication number: 20220084900
    Abstract: A semiconductor device includes an insulating substrate, wiring layers, heat dissipation layers, a semiconductor element, and a sealing resin. The wiring layers each have a first obverse face and a first reverse face oriented in opposite directions in a thickness direction of the substrate. The first reverse faces of the wiring layers are connected to the substrate. The heat dissipation layers each have a second obverse face oriented in the same direction as the first obverse face, and a second reverse face oriented opposite to the second obverse face in the thickness direction. The heat dissipation layers are located opposite to the plurality of wiring layers in the thickness direction with respect to the substrate. The second obverse faces of the heat dissipation layers are connected to the substrate. The semiconductor element is connected to one of the first obverse faces of the wiring layers. The sealing resin covers the substrate, the wiring layers, and the semiconductor element.
    Type: Application
    Filed: January 10, 2020
    Publication date: March 17, 2022
    Inventor: Takumi KANDA
  • Publication number: 20220077032
    Abstract: A semiconductor device includes a first conductive plate, a second conductive plate, first switching elements, second switching elements, a first supply terminal and a second supply terminal. The first and second conductive plates are spaced apart from each other in a first direction. The first switching elements are bonded to the first conductive plate, and are electrically connected to the second conductive plate. The second switching elements are bonded to the second conductive plate. The first supply terminal is bonded to the first conductive plate. The second supply terminal has a region that overlaps with the first supply terminal as viewed in a plan view. The second supply terminal is spaced apart from the first conductive plate and the first supply terminal in a thickness direction perpendicular to the first direction. The second supply terminal is electrically connected to the second switching elements.
    Type: Application
    Filed: November 18, 2021
    Publication date: March 10, 2022
    Inventors: Takumi KANDA, Masaaki MATSUO, Soichiro TAKAHASHI, Yoshitoki INAMI, Kaito INOUE
  • Patent number: D973029
    Type: Grant
    Filed: January 26, 2021
    Date of Patent: December 20, 2022
    Assignee: ROHM CO., LTD.
    Inventors: Kohei Tanikawa, Takumi Kanda, Kenji Hayashi
  • Patent number: D978809
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: February 21, 2023
    Assignee: ROHM CO., LTD.
    Inventors: Takumi Kanda, Masashi Hayashiguchi