Patents by Inventor Shinji Hiramitsu
Shinji Hiramitsu 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).
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Patent number: 11817429Abstract: A semiconductor device includes: multiple semiconductor elements each having a one surface and a rear surface in a plate thickness direction; a first member that sandwiches the multiple semiconductor elements and is electrically connected to an electrode on the one surface; a second member electrically connected to an electrode on the rear surface; and multiple terminals that are continuous from the first or second member. An area of the second member is smaller than that of the first member. Semiconductor elements are arranged in a longitudinal direction of the second member. The semiconductor device further includes a first joint portion that electrically connects each semiconductor element and the second member and a second joint portion that electrically connects a terminal and the second member. The multiple solder joint portions are symmetrically placed.Type: GrantFiled: September 2, 2021Date of Patent: November 14, 2023Assignee: DENSO CORPORATIONInventors: Noriyuki Kakimoto, Hiroshi Ishino, Shinji Hiramitsu
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Publication number: 20220392834Abstract: A semiconductor device includes a semiconductor element having a surface on which a first electrode and a second electrode are disposed, a conductor plate having a surface facing the surface of the semiconductor element and electrically connected to the first electrode, an insulating layer disposed on the surface of the conductor plate and covers a part of the surface of the conductor plate, and a conductor circuit pattern disposed on the insulating layer. The conductor circuit pattern has at least one conductor line electrically connected to the semiconductor element. The at least one conductor line includes a conductor line electrically connected to the second electrode.Type: ApplicationFiled: August 12, 2022Publication date: December 8, 2022Inventors: TAKUYA KADOGUCHI, TAKANORI KAWASHIMA, SHINJI HIRAMITSU, SHOICHIRO OMAE
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Publication number: 20220278030Abstract: A semiconductor device has a joint part in which a first conducting part and a second conducting part are joined by a joint material. The first conducting part has a high wettability region and a low wettability region in a surface opposite to the second conducting part. The low wettability region is adjacent to the high wettability region to define an outer periphery of the high wettability region and has wettability lower than the high wettability region to the joint material. The high wettability region has an overlap region overlapping a formation region of the joint part in the second conducting part in a planar view, and a non-overlap region connected to the overlap region and not overlapping the formation region of the joint part in the second conducting part. The non-overlap region includes a holding region capable of holding the joint material that is surplus for the joint part.Type: ApplicationFiled: May 18, 2022Publication date: September 1, 2022Inventors: Syunsuke ARAI, Masayoshi NISHIHATA, Shinji HIRAMITSU, Noriyuki KAKIMOTO
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Patent number: 11270984Abstract: In a semiconductor module, two switching elements are connected in parallel to each other. Each of the switching elements includes a first main electrode formed on one surface side, and a second main electrode and a gate electrode formed on a rear surface side opposite to the one surface side. A first conductor plate is coupled with two first main terminals at first coupling portions and is electrically connected with the first main electrodes. A second conductor plate is coupled with one second main terminal at a second coupling portion and is electrically connected with the second main electrodes. The second coupling portion is disposed between the switching elements in an alignment direction of the switching elements, and the first coupling portions are provided on both sides of the second coupling portion in the alignment direction.Type: GrantFiled: December 31, 2019Date of Patent: March 8, 2022Assignee: DENSO CORPORATIONInventors: Shunsuke Arai, Shinji Hiramitsu, Takuo Nagase
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Publication number: 20210398951Abstract: A semiconductor device includes: multiple semiconductor elements each having a one surface and a rear surface in a plate thickness direction; a first member that sandwiches the multiple semiconductor elements and is electrically connected to an electrode on the one surface; a second member electrically connected to an electrode on the rear surface; and multiple terminals that are continuous from the first or second member. An area of the second member is smaller than that of the first member. Semiconductor elements are arranged in a longitudinal direction of the second member. The semiconductor device further includes a first joint portion that electrically connects each semiconductor element and the second member and a second joint portion that electrically connects a terminal and the second member. The multiple solder joint portions are symmetrically placed.Type: ApplicationFiled: September 2, 2021Publication date: December 23, 2021Inventors: NORIYUKI KAKIMOTO, HIROSHI ISHINO, SHINJI HIRAMITSU
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Patent number: 10720383Abstract: In a semiconductor device, a first semiconductor chip and a second semiconductor chip are aligned in a direction orthogonal to a plate thickness direction of the first semiconductor chip. A pair of first heat sinks is disposed on opposite sides of the first semiconductor chip in the first direction, and a pair of second heat sinks disposed on opposite sides of the second semiconductor chip in the first direction. The semiconductor chips and the heat sinks are sealed in a resin molded body. A plurality of main terminals are aligned in the second direction and project from a same side surface of a resin molded body. The main terminals includes a positive electrode terminal, a negative electrode terminal, an output terminal, and an auxiliary terminal. The first relay members are disposed in the resin molded body, and electrically connecting the main terminals and the corresponding heat sinks.Type: GrantFiled: July 9, 2019Date of Patent: July 21, 2020Assignee: DENSO CORPORATIONInventor: Shinji Hiramitsu
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Publication number: 20200135702Abstract: In a semiconductor module, two switching elements are connected in parallel to each other. Each of the switching elements includes a first main electrode formed on one surface side, and a second main electrode and a gate electrode formed on a rear surface side opposite to the one surface side. A first conductor plate is coupled with two first main terminals at first coupling portions and is electrically connected with the first main electrodes. A second conductor plate is coupled with one second main terminal at a second coupling portion and is electrically connected with the second main electrodes. The second coupling portion is disposed between the switching elements in an alignment direction of the switching elements, and the first coupling portions are provided on both sides of the second coupling portion in the alignment direction.Type: ApplicationFiled: December 31, 2019Publication date: April 30, 2020Inventors: Shunsuke ARAI, Shinji HIRAMITSU, Takuo NAGASE
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Patent number: 10535577Abstract: In a semiconductor device, a plurality of semiconductor chips included in an upper-arm circuit are connected in parallel between a pair of upper-arm plates, while a plurality of semiconductor chips included in a lower-arm circuit are connected in parallel between a pair of lower-arm plates. In each of the arm circuits, the plurality of semiconductor chips are arranged in a direction perpendicular to a direction in which emitter electrodes and pads are arranged, the pads are disposed on the same side of the emitter electrodes, and signal terminals extend in the same direction. A series-connecting part between the upper- and lower-arm circuits includes a joint part 20 continued to respective side surfaces of the corresponding upper- and lower-arm plates. Each of inductances of respective parallel-connecting parts of the upper- and lower-arm plates which connect the semiconductor chips in parallel is smaller than an inductance of the series-connecting part.Type: GrantFiled: April 27, 2017Date of Patent: January 14, 2020Assignee: DENSO CORPORATIONInventors: Hiroshi Ishino, Hideki Kawahara, Shinji Hiramitsu, Shunsuke Arai
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Publication number: 20190333843Abstract: In a semiconductor device, a first semiconductor chip and a second semiconductor chip are aligned in a direction orthogonal to a plate thickness direction of the first semiconductor chip. A pair of first heat sinks is disposed on opposite sides of the first semiconductor chip in the first direction, and a pair of second heat sinks disposed on opposite sides of the second semiconductor chip in the first direction. The semiconductor chips and the heat sinks are sealed in a resin molded body. A plurality of main terminals are aligned in the second direction and project from a same side surface of a resin molded body. The main terminals includes a positive electrode terminal, a negative electrode terminal, an output terminal, and an auxiliary terminal. The first relay members are disposed in the resin molded body, and electrically connecting the main terminals and the corresponding heat sinks.Type: ApplicationFiled: July 9, 2019Publication date: October 31, 2019Inventor: Shinji HIRAMITSU
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Publication number: 20190088568Abstract: In a semiconductor device, a plurality of semiconductor chips included in an upper-arm circuit are connected in parallel between a pair of upper-arm plates, while a plurality of semiconductor chips included in a lower-arm circuit are connected in parallel between a pair of lower-arm plates. In each of the arm circuits, the plurality of semiconductor chips are arranged in a direction perpendicular to a direction in which emitter electrodes and pads are arranged, the pads are disposed on the same side of the emitter electrodes, and signal terminals extend in the same direction. A series-connecting part between the upper- and lower-arm circuits includes a joint part 20 continued to respective side surfaces of the corresponding upper- and lower-arm plates. Each of inductances of respective parallel-connecting parts of the upper- and lower-arm plates which connect the semiconductor chips in parallel is smaller than an inductance of the series-connecting part.Type: ApplicationFiled: April 27, 2017Publication date: March 21, 2019Inventors: Hiroshi ISHINO, Hideki KAWAHARA, Shinji HIRAMITSU, Shunsuke ARAI
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Patent number: 10109557Abstract: An electronic device includes: a resin substrate that includes insulation resin on which wiring made of conductive material is provided; a heat-generation element that is a circuit element mounted on a first surface of the resin substrate, and is operated to generate heat; and a sealing resin that is provided on the first surface, and seals the heat-generation element. An opposite surface of the sealing resin opposite to a surface of the sealing resin in contact with the first surface is thermally connected to a heat radiation member and mounted on the heat radiation member. Each of the resin substrate and the sealing resin has a bend shape convex toward the opposite surface when each of surrounding temperatures is a normal temperature and has a linear expansion coefficient for maintaining a bend shape convex toward the opposite surface when each of the surrounding temperatures is a high temperature.Type: GrantFiled: December 11, 2015Date of Patent: October 23, 2018Assignee: DENSO CORPORATIONInventors: Tetsuto Yamagishi, Toshihiro Nagaya, Masayuki Takenaka, Shinji Hiramitsu
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Patent number: 9832872Abstract: A manufacturing method of an electronic device, including: a circuit board with a substrate through hole; a circuit element; and a resin mold with a mold through hole, using a first mold, a second mold having a cavity, and a pressing member protruding from a bottom of the cavity includes: fixing the circuit board to the first mold; fixing the second mold to the first mold to cover an opening of the substrate through hole by the pressing member; and forming the resin mold while covering the circuit element with the constituent material in the cavity. The circuit board is deformed by press-contacting the pressing member to the circuit board in a state where a part of the pressing member is inserted into the substrate through hole so that an opening area of the substrate through hole decreases toward a reverse surface from the one surface.Type: GrantFiled: September 14, 2015Date of Patent: November 28, 2017Assignee: DENSO CORPORATIONInventors: Tetsuto Yamagishi, Masayuki Takenaka, Toshihiro Nagaya, Shinji Hiramitsu
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Publication number: 20170330818Abstract: An electronic device includes: a resin substrate that includes insulation resin on which wiring made of conductive material is provided; a heat-generation element that is a circuit element mounted on a first surface of the resin substrate, and is operated to generate heat; and a sealing resin that is provided on the first surface, and seals the heat-generation element. An opposite surface of the sealing resin opposite to a surface of the sealing resin in contact with the first surface is thermally connected to a heat radiation member and mounted on the heat radiation member. Each of the resin substrate and the sealing resin has a bend shape convex toward the opposite surface when each of surrounding temperatures is a normal temperature and has a linear expansion coefficient for maintaining a bend shape convex toward the opposite surface when each of the surrounding temperatures is a high temperature.Type: ApplicationFiled: December 11, 2015Publication date: November 16, 2017Inventors: Tetsuto YAMAGISHI, Toshihiro NAGAYA, Masayuki TAKENAKA, Shinji HIRAMITSU
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Patent number: 9780684Abstract: A power converter includes: a circuit board having an insulating substrate and a plurality of wirings in the insulating substrate; and first and second switching elements on a first surface of the circuit board that are connected in series. The first switching element has first and second electrodes. The second switching element has a third electrode and a fourth electrode. The circuit board has a first wiring connected to the first electrode, a second wiring connected to the second and third electrodes, a third wiring connected to the fourth electrode, a fourth wiring as an output wiring connected to the third electrode, and a fifth wiring connected to the third wiring. The first, second, third and fourth wirings are arranged in order on the first surface, and the fifth wiring on a second surface opposite to the first surface is opposed to the first, second, and third wirings.Type: GrantFiled: February 17, 2016Date of Patent: October 3, 2017Assignee: DENSO CORPORATIONInventor: Shinji Hiramitsu
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Publication number: 20170229371Abstract: An electronic device includes: a heating element; an insulation metal component; and a sealing component. The insulation metal component includes a first metal part to which the heating element is mounted, a second metal part having a portion exposed from the sealing component, and an insulation part interposed between the first metal part and the second metal part. The second metal part has a central part and a peripheral part having a thickness thinner than that of the central part. The second metal part has one surface opposing and in tight contact with the insulation part, and an exposed surface opposite from the sealing component within an area corresponding to the central part. The second metal part has a recess recessed from a virtual straight line that connects an end of the one surface to an end of the exposed surface at a shortest distance around the central part.Type: ApplicationFiled: February 8, 2016Publication date: August 10, 2017Inventor: Shinji HIRAMITSU
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Publication number: 20170135210Abstract: A manufacturing method of an electronic device, including: a circuit board with a substrate through hole; a circuit element; and a resin mold with a mold through hole, using a first mold, a second mold having a cavity, and a pressing member protruding from a bottom of the cavity includes: fixing the circuit board to the first mold; fixing the second mold to the first mold to cover an opening of the substrate through hole by the pressing member; and forming the resin mold while covering the circuit element with the constituent material in the cavity. The circuit board is deformed by press-contacting the pressing member to the circuit board in a state where a part of the pressing member is inserted into the substrate through hole so that an opening area of the substrate through hole decreases toward a reverse surface from the one surface.Type: ApplicationFiled: September 14, 2015Publication date: May 11, 2017Inventors: Tetsuto YAMAGISHI, Masayuki TAKENAKA, Toshihiro NAGAYA, Shinji HIRAMITSU
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Publication number: 20160255714Abstract: A power converter includes: a circuit board having an insulating substrate and a plurality of wirings in the insulating substrate; and first and second switching elements on a first surface of the circuit board that are connected in series. The first switching element has first and second electrodes. The second switching element has a third electrode and a fourth electrode. The circuit board has a first wiring connected to the first electrode, a second wiring connected to the second and third electrodes, a third wiring connected to the fourth electrode, a fourth wiring as an output wiring connected to the third electrode, and a fifth wiring connected to the third wiring. The first, second, third and fourth wirings are arranged in order on the first surface, and the fifth wiring on a second surface opposite to the first surface is opposed to the first, second, and third wirings.Type: ApplicationFiled: February 17, 2016Publication date: September 1, 2016Inventor: Shinji HIRAMITSU
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Publication number: 20160095264Abstract: A power module includes a plurality of semiconductor devices constituting upper/lower arms of an inverter circuit, a plurality of conductive plates arranged to face electrode surfaces of the semiconductor devices and a module case configured to accommodate the semiconductor devices and conductive plates, wherein the module case includes a heat-radiation member made of plate-like metal and facing a surface of the conductive plate and a metallic frame body having an opening that is closed by the heat-radiation member, and wherein a heat-radiation fin unit having a plurality of heat-radiation fins vertically arranged thereon is provided at a center of the heat-radiation member, and a joint portion with the frame body is provided at an peripheral edge of the heat-radiation member, and the heat radiation member has a heat conductivity higher than that of the frame body, and the frame body has a higher rigidity than that of the heat-radiation member.Type: ApplicationFiled: December 8, 2015Publication date: March 31, 2016Inventors: Yujiro KANEKO, Tokihito SUWA, Shinji HIRAMITSU, Takahiro SHIMURA
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Patent number: 9241429Abstract: A power module includes a plurality of semiconductor devices constituting upper/lower arms of an inverter circuit, a plurality of conductive plates arranged to face electrode surfaces of the semiconductor devices and a module case configured to accommodate the semiconductor devices and conductive plates, wherein the module case includes a heat-radiation member made of plate-like metal and facing a surface of the conductive plate and a metallic frame body having an opening that is closed by the heat-radiation member, and wherein a heat-radiation fin unit having a plurality of heat-radiation fins vertically arranged thereon is provided at a center of the heat-radiation member, and a joint portion with the frame body is provided at an peripheral edge of the heat-radiation member, and the heat radiation member has a heat conductivity higher than that of the frame body, and the frame body has a higher rigidity than that of the heat-radiation member.Type: GrantFiled: May 22, 2012Date of Patent: January 19, 2016Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yujiro Kaneko, Tokihito Suwa, Shinji Hiramitsu, Takahiro Shimura
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Patent number: 9000582Abstract: A power semiconductor module includes: a circuit body having a power semiconductor element and a conductor member connected to the power semiconductor element; a case in which the circuit body is housed; and a connecting member which connects the circuit body and the case. The case includes: a first heat dissipating member and a second heat dissipating member which are disposed in opposed relation to each other while interposing the circuit body in between; a side wall which joins the first heat dissipating member and the second heat dissipating member; and an intermediate member which is formed on the periphery of the first heat dissipating member and connected to the side wall, the intermediate member including a curvature that is projected toward a housing space of the case.Type: GrantFiled: February 21, 2012Date of Patent: April 7, 2015Assignee: Hitachi Automotive Systems, Ltd.Inventors: Shinji Hiramitsu, Atsushi Koshizaka, Masato Higuma, Hiroshi Tokuda, Keiji Kawahara