Patents by Inventor Takamasa ODA
Takamasa ODA 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: 11876033Abstract: An object of the present disclosure is to provide a technique capable of relaxing the stress to be applied around the attachment hole of the resin case at the time of fixing the resin case accommodating the semiconductor element to the heat dissipation component with a bolt. A semiconductor device includes a base plate, a heat dissipation component, and a resin case. In a state where the resin case is disposed on the heat dissipation component via the base plate, the resin case is attached to the heat dissipation component with a bolt. The resin case has a recess portion, an attachment hole formed below the recess portion, and at least one groove formed between a wall portion on an inner peripheral side forming the recess portion and the attachment hole. One end of the at least one groove reaches an outer peripheral end of the resin case.Type: GrantFiled: August 28, 2020Date of Patent: January 16, 2024Assignee: Mitsubishi Electric CorporationInventors: Takuro Mori, Masaru Furukawa, Takamasa Oda, Seiji Saiki
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Publication number: 20230010169Abstract: Provided are a semiconductor device and an inverter device with a decrease in yield being suppressed by preventing the adhesive from leaking into the inside of the semiconductor device. A heat sink, a wiring board provided on the heat sink, a semiconductor chip provided on the wiring board, a case housing provided on the heat sink so as to surround the wiring board and the semiconductor chip, an adhesive that adheres a lower surface joint portion of the case housing and an upper surface joint portion of the heat sink, a sealing material that fills the case housing and covers the wiring board and the semiconductor chip, and a convex portion provided on the lower surface joint portion of the case housing or the upper surface joint portion of the heat sink, that separates the adhesive from the sealing material are included.Type: ApplicationFiled: April 12, 2022Publication date: January 12, 2023Applicant: Mitsubishi Electric CorporationInventors: Yosuke Miyagi, Hideki Tsukamoto, Takuro Mori, Masaru Furukawa, Korehide Okamoto, Takamasa Oda, Seiji Saiki, Takeshi Ogawa
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Patent number: 11257760Abstract: The semiconductor device includes a semiconductor element, a plurality of terminal electrodes, internal wiring, and a sealing material. The semiconductor element is mounted on a circuit pattern provided on an insulating substrate. The plurality of terminal electrodes are provided on a case in which the insulating substrate and the semiconductor element are contained. The internal wiring connects the semiconductor element and the plurality of terminal electrodes. The sealing material fills a space in the case. The internal wiring includes a plurality of circuit patterns, a plurality of metal blocks, and metal wire. The plurality of metal blocks are electrically connected to the respective circuit patterns. The metal wire connects the plurality of metal blocks and is bonded to the plurality of metal blocks at positions closer to an upper surface of the sealing material than surfaces of the plurality of circuit patterns.Type: GrantFiled: August 12, 2020Date of Patent: February 22, 2022Assignee: Mitsubishi Electric CorporationInventors: Seiji Saiki, Masaru Furukawa, Takuro Mori, Takamasa Oda, Hideki Tsukamoto
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Publication number: 20210183736Abstract: An object of the present disclosure is to provide a technique capable of relaxing the stress to be applied around the attachment hole of the resin case at the time of fixing the resin case accommodating the semiconductor element to the heat dissipation component with a bolt. A semiconductor device includes a base plate, a heat dissipation component, and a resin case. In a state where the resin case is disposed on the heat dissipation component via the base plate, the resin case is attached to the heat dissipation component with a bolt. The resin case has a recess portion, an attachment hole formed below the recess portion, and at least one groove formed between a wall portion on an inner peripheral side forming the recess portion and the attachment hole. One end of the at least one groove reaches an outer peripheral end of the resin case.Type: ApplicationFiled: August 28, 2020Publication date: June 17, 2021Applicant: Mitsubishi Electric CorporationInventors: Takuro MORI, Masaru FURUKAWA, Takamasa ODA, Seiji SAIKI
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Publication number: 20210143094Abstract: The semiconductor device includes a semiconductor element, a plurality of terminal electrodes, internal wiring, and a sealing material. The semiconductor element is mounted on a circuit pattern provided on an insulating substrate. The plurality of terminal electrodes are provided on a case in which the insulating substrate and the semiconductor element are contained. The internal wiring connects the semiconductor element and the plurality of terminal electrodes. The sealing material fills a space in the case. The internal wiring includes a plurality of circuit patterns, a plurality of metal blocks, and metal wire. The plurality of metal blocks are electrically connected to the respective circuit patterns. The metal wire connects the plurality of metal blocks and is bonded to the plurality of metal blocks at positions closer to an upper surface of the sealing material than surfaces of the plurality of circuit patterns.Type: ApplicationFiled: August 12, 2020Publication date: May 13, 2021Applicant: Mitsubishi Electric CorporationInventors: Seiji SAIKI, Masaru FURUKAWA, Takuro MORI, Takamasa ODA, Hideki TSUKAMOTO
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Patent number: 10593605Abstract: A semiconductor package includes: an insulating substrate having a circuit pattern; a semiconductor device provided on the circuit pattern; a case surrounding the semiconductor device on the insulating substrate; an external terminal electrically connecting inside and outside of the case; an inner wire electrically connecting the circuit pattern or the semiconductor device with an inner end portion of the external terminal; a sealing resin sealing the semiconductor device and the inner wire inside the case; and a lid covering an upper surface of the sealing resin, wherein the inner wire includes a fusion portion that fuses when excessive current flows, and the lid includes a scattering prevention part covering the fusion portion while securing a gap between the scattering prevention part and the upper surface of the sealing resin, and is fixed to the upper surface of the sealing resin in a region other than the scattering prevention part.Type: GrantFiled: November 13, 2018Date of Patent: March 17, 2020Assignee: Mitsubishi Electric CorporationInventors: Yoshitaka Otsubo, Masayuki Ando, Kota Ohara, Takamasa Oda, Takuro Mori
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Publication number: 20190304859Abstract: A semiconductor package includes: an insulating substrate having a circuit pattern; a semiconductor device provided on the circuit pattern; a case surrounding the semiconductor device on the insulating substrate; an external terminal electrically connecting inside and outside of the case; an inner wire electrically connecting the circuit pattern or the semiconductor device with an inner end portion of the external terminal; a sealing resin sealing the semiconductor device and the inner wire inside the case; and a lid covering an upper surface of the sealing resin, wherein the inner wire includes a fusion portion that fuses when excessive current flows, and the lid includes a scattering prevention part covering the fusion portion while securing a gap between the scattering prevention part and the upper surface of the sealing resin, and is fixed to the upper surface of the sealing resin in a region other than the scattering prevention part.Type: ApplicationFiled: November 13, 2018Publication date: October 3, 2019Applicant: Mitsubishi Electric CorporationInventors: Yoshitaka OTSUBO, Masayuki ANDO, Kota OHARA, Takamasa ODA, Takuro MORI