Patents by Inventor Ryo Tsuda
Ryo Tsuda 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: 11488896Abstract: An object is to provide a technique capable of enhancing electrical characteristics and reliability of a semiconductor device. The semiconductor device includes a plurality of semiconductor chips, a plurality of electrodes each being electrically connected to each of the plurality of semiconductor chips, a sealing member, and a joint part. The sealing member covers the plurality of semiconductor chips, and parts being connected to the plurality of semiconductor chips, of the plurality of electrodes. The joint part is disposed outside the sealing member to electrically connect parts which are not covered by the sealing member, of the plurality of electrodes.Type: GrantFiled: September 28, 2015Date of Patent: November 1, 2022Assignee: Mitsubishi Electric CorporationInventors: Yukimasa Hayashida, Shigeru Hasegawa, Ryo Tsuda, Ryutaro Date, Junichi Nakashima
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Publication number: 20220301999Abstract: An insulated substrate (2) includes first and second circuit patterns (5,4). A semiconductor device (7) includes first and second main electrodes (9,8) connected to the first and second circuit patterns (5,4) respectively and through which main currents flow. A first lead (12) is solder jointed to the first circuit pattern (5). A second lead (11) is ultrasonic jointed to the second circuit pattern (4).Type: ApplicationFiled: December 10, 2019Publication date: September 22, 2022Applicant: Mitsubishi Electric CorporationInventor: Ryo TSUDA
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Patent number: 11063025Abstract: Gates of a plurality of semiconductor switching elements are electrically connected to a common gate control pattern by gate wires. Sources of the plurality of semiconductor switching elements are electrically connected to a common source control pattern by source wires. The gate control pattern is disposed to interpose the source control pattern between the gate control pattern and each of the plurality of semiconductor switching elements that are connected in parallel and that operate in parallel. Hence, each of the gate wires becomes longer than each of the source wires, and has an inductance larger than the source wire. Accordingly, gate oscillation is reduced or suppressed in the plurality of semiconductor switching elements that are connected in parallel and that operate in parallel.Type: GrantFiled: August 27, 2018Date of Patent: July 13, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Junichi Nakashima, Shota Morisaki, Yoshiko Tamada, Yasushi Nakayama, Tetsu Negishi, Ryo Tsuda, Yukimasa Hayashida, Ryutaro Date
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Patent number: 10804253Abstract: First and second circuit patterns (5,6) are provided on an insulating substrate (1). First and second semiconductor chips (7,8) are provided on the first circuit pattern (5). A relay circuit pattern (10) is provided between the first semiconductor chip (7) and the second semiconductor chip (8) on the insulating substrate (1). A wire (11) is continuously connected to the first semiconductor chip (7), the relay circuit pattern (10), the second semiconductor chip (8) and the second circuit pattern (6) which are sequentially arranged in one direction.Type: GrantFiled: August 10, 2016Date of Patent: October 13, 2020Assignee: Mitsubishi Electric CorporationInventors: Yukimasa Hayashida, Ryo Tsuda, Ryutaro Date
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Publication number: 20200185359Abstract: Gates of a plurality of semiconductor switching elements are electrically connected to a common gate control pattern by gate wires. Sources of the plurality of semiconductor switching elements are electrically connected to a common source control pattern by source wires. The gate control pattern is disposed to interpose the source control pattern between the gate control pattern and each of the plurality of semiconductor switching elements that are connected in parallel and that operate in parallel. Hence, each of the gate wires becomes longer than each of the source wires, and has an inductance larger than the source wire. Accordingly, gate oscillation is reduced or suppressed in the plurality of semiconductor switching elements that are connected in parallel and that operate in parallel.Type: ApplicationFiled: August 27, 2018Publication date: June 11, 2020Applicant: Mitsubishi Electric CorporationInventors: Junichi NAKASHIMA, Shota MORISAKI, Yoshiko TAMADA, Yasushi NAKAYAMA, Tetsu NEGISHI, Ryo TSUDA, Yukimasa HAYASHIDA, Ryutaro DATE
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Publication number: 20200111772Abstract: First and second circuit patterns (5,6) are provided on an insulating substrate (1). First and second semiconductor chips (7,8) are provided on the first circuit pattern (5). A relay circuit pattern (10) is provided between the first semiconductor chip (7) and the second semiconductor chip (8) on the insulating substrate (1). A wire (11) is continuously connected to the first semiconductor chip (7), the relay circuit pattern (10), the second semiconductor chip (8) and the second circuit pattern (6) which are sequentially arranged in one direction.Type: ApplicationFiled: August 10, 2016Publication date: April 9, 2020Applicant: Mitsubishi Electric CorporationInventors: Yukimasa HAYASHIDA, Ryo TSUDA, Ryutaro DATE
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Patent number: 10361136Abstract: It is an object of the present invention to provide a semiconductor device which allows an increase in the number of semiconductor elements mounted in parallel and prevents a shape of an insulating substrate onto which the semiconductor elements are mounted, from being laterally long, and provide a semiconductor module including such semiconductor device. A semiconductor device according to the present invention includes an insulating substrate, a metal pattern which is a continuous piece and is bonded to one main surface of the insulating substrate, and a plurality of switching elements which are bonded to a surface opposite to the insulating substrate on the metal pattern, and the plurality of switching elements are arranged in a matrix of two or more rows and two or more columns on the metal pattern.Type: GrantFiled: September 29, 2015Date of Patent: July 23, 2019Assignee: Mitsubishi Electric CorporationInventors: Shigeru Hasegawa, Isao Umezaki, Ryo Tsuda, Yukimasa Hayashida, Ryutaro Date
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Patent number: 10325827Abstract: A base plate, and a plurality of unit structures formed on the base plate are provided. Each of the unit structures including an insulating substrate fixed on the base plate, a metal pattern formed on the insulating substrate, a semiconductor element electrically connected to the metal pattern, and a main electrode having an upper end portion exposed to the outside and a lower end portion connected to a peripheral portion of the metal pattern closest to an outer edge of the base plate.Type: GrantFiled: May 29, 2013Date of Patent: June 18, 2019Assignee: Mitsubishi Electric CorporationInventors: Shigeru Hasegawa, Kazuhiro Morishita, Ryo Tsuda, Yukimasa Hayashida, Goro Yasutomi, Ryutaro Date
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Publication number: 20180204778Abstract: It is an object of the present invention to provide a semiconductor device which allows an increase in the number of semiconductor elements mounted in parallel and prevents a shape of an insulating substrate onto which the semiconductor elements are mounted, from being laterally long, and provide a semiconductor module including such semiconductor device. A semiconductor device according to the present invention includes an insulating substrate, a metal pattern which is a continuous piece and is bonded to one main surface of the insulating substrate, and a plurality of switching elements which are bonded to a surface opposite to the insulating substrate on the metal pattern, and the plurality of switching elements are arranged in a matrix of two or more rows and two or more columns on the metal pattern.Type: ApplicationFiled: September 29, 2015Publication date: July 19, 2018Applicant: Mitsubishi Electric CorporationInventors: Shigeru HASEGAWA, Isao UMEZAKI, Ryo TSUDA, Yukimasa HAYASHIDA, Ryutaro DATE
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Publication number: 20180197813Abstract: An object is to provide a technique capable of enhancing electrical characteristics and reliability of a semiconductor device. The semiconductor device includes a plurality of semiconductor chips, a plurality of electrodes each being electrically connected to each of the plurality of semiconductor chips, a sealing member, and a joint part. The sealing member covers the plurality of semiconductor chips, and parts being connected to the plurality of semiconductor chips, of the plurality of electrodes. The joint part is disposed outside the sealing member to electrically connect parts which are not covered by the sealing member, of the plurality of electrodes.Type: ApplicationFiled: September 28, 2015Publication date: July 12, 2018Applicant: Mitsubishi Electric CorporationInventors: Yukimasa HAYASHIDA, Shigeru HASEGAWA, Ryo TSUDA, Ryutaro DATE, Junichi NAKASHIMA
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Patent number: 9622368Abstract: Each of semiconductor module includes a semiconductor chip, a case surrounding the semiconductor chip, and a main electrode connected to the semiconductor chip and led out to an upper surface of case. A connecting electrode is connected and fixed to the main electrodes of the adjacent semiconductor modules. The connecting electrode is formed only of a metal plate.Type: GrantFiled: August 24, 2012Date of Patent: April 11, 2017Assignee: Mitsubishi Electric CorporationInventors: Ryo Tsuda, Kazuhiro Morishita
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Publication number: 20160079142Abstract: A base plate, and a plurality of unit structures formed on the base plate are provided. Each of the unit structures including an insulating substrate fixed on the base plate, a metal pattern formed on the insulating substrate, a semiconductor element electrically connected to the metal pattern, and a main electrode having an upper end portion exposed to the outside and a lower end portion connected to a peripheral portion of the metal pattern closest to an outer edge of the base plate.Type: ApplicationFiled: May 29, 2013Publication date: March 17, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Shigeru HASEGAWA, Kazuhiro MORISHITA, Ryo TSUDA, Yukimasa HAYASHIDA, Goro YASUTOMI, Ryutaro DATE
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Publication number: 20150138733Abstract: Each of semiconductor module includes a semiconductor chip, a case surrounding the semiconductor chip, and a main electrode connected to the semiconductor chip and led out to an upper surface of case. A connecting electrode is connected and fixed to the main electrodes of the adjacent semiconductor modules. The connecting electrode is formed only of a metal plate. The rated current, the rated voltage and the circuit configuration can easily be changed by changing the connection using the connecting electrode, thus enabling reduction of the design time and facilitating manufacture management. Only a malfunctioning one of the semiconductor modules may be replaced. There is, therefore, no need to replace the entire device. The connecting electrode is formed of an electrically conductive plate and, therefore, enables reduction of the number of component parts and reduction of the device in size in comparison with the conventional wiring bus bar.Type: ApplicationFiled: August 24, 2012Publication date: May 21, 2015Applicant: Mitsubishi Electric CorporationInventors: Ryo Tsuda, Kazuhiro Morishita
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Patent number: D790491Type: GrantFiled: March 18, 2016Date of Patent: June 27, 2017Assignee: Mitsubishi Electric CorporationInventors: Yukimasa Hayashida, Shinichi Iura, Hitoshi Uemura, Daisuke Oya, Kenji Hatori, Yasuhiro Sakai, Ryo Tsuda, Ryutaro Date
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Patent number: D798832Type: GrantFiled: March 18, 2016Date of Patent: October 3, 2017Assignee: Mitsubishi Electric CorporationInventors: Yukimasa Hayashida, Shinichi Iura, Hitoshi Uemura, Daisuke Oya, Kenji Hatori, Yasuhiro Sakai, Ryo Tsuda, Ryutaro Date
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Patent number: D827590Type: GrantFiled: March 18, 2016Date of Patent: September 4, 2018Assignee: Mitsubishi Electric CorporationInventors: Yukimasa Hayashida, Shinichi Iura, Hitoshi Uemura, Daisuke Oya, Kenji Hatori, Yasuhiro Sakai, Ryo Tsuda, Ryutaro Date