Patents by Inventor Akitoyo Konno
Akitoyo Konno 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: 11542192Abstract: The present invention provides a highly reliable multilayered glass panel and an encapsulating material for achieving the highly reliable multilayered glass panel. The encapsulating material includes lead-free low melting glass particles containing vanadium oxide and tellurium oxide, low thermal expansion filler particles, and glass beads as a solid content. A volume fraction of the glass beads in the solid content is not less than 10% to not more than 35%, and a volume fraction of the lead-free low melting glass particles in the solid content is larger than a volume fraction of the low thermal expansion filler in the solid content.Type: GrantFiled: November 1, 2018Date of Patent: January 3, 2023Assignee: Showa Denko Materials Co., Ltd.Inventors: Takashi Naito, Shinichi Tachizono, Kei Yoshimura, Yuji Hashiba, Hironori Suzuki, Taigo Onodera, Tatsuya Miyake, Akitoyo Konno
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Patent number: 11166396Abstract: Provided is a box-type vehicle-mounted control device that effectively increases the amount of heat transfer from electronic components and a circuit board to a casing (base and cover) and that accordingly has achieved excellent heat dissipation property. The box-type vehicle-mounted control device includes a circuit board 12, a base 13, and a cover 14. In addition, a first heat radiating coating layer 31 is formed on at least one surface of the circuit board 12, and a second heat radiating coating layer 32 is formed on an inner surface of one or both of the base 13 and the cover 14 facing the first heat radiating coating layer 31.Type: GrantFiled: May 12, 2014Date of Patent: November 2, 2021Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Maki Ito, Toshiaki Ishii, Masaru Kamoshida, Hideto Yoshinari, Masato Saito, Akitoyo Konno
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Patent number: 10968135Abstract: The lead-free glass composition contains vanadium oxide, tellurium oxide, alkali metal oxide, iron oxide, barium oxide, and tungsten oxide while containing substantially no phosphorus oxide, and further contains at least one of additional components including yttrium oxide, lanthanum oxide, cerium oxide, erbium oxide, ytterbium oxide, aluminum oxide, and gallium oxide. A content of the tellurium oxide is equal to or more than 25 mol %, and equal to or less than 43 mol % in terms of oxide TeO2. A content of the alkali metal oxide is equal to or more than 4 mol %, and equal to or less than 27 mol % in terms of oxide R2O (R: alkali metal element).Type: GrantFiled: May 29, 2019Date of Patent: April 6, 2021Assignee: Showa Denko Materials Co., Ltd.Inventors: Takashi Naito, Taigo Onodera, Tatsuya Miyake, Akitoyo Konno, Shinichi Tachizono, Yuji Hashiba, Keita Yuguchi, Takahiro Ikabata, Masaharu Matsuura
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Publication number: 20200392036Abstract: The present invention provides a highly reliable multilayered glass panel and an encapsulating material for achieving the highly reliable multilayered glass panel. The encapsulating material includes lead-free low melting glass particles containing vanadium oxide and tellurium oxide, low thermal expansion filler particles, and glass beads as a solid content. A volume fraction of the glass beads in the solid content is not less than 10% to not more than 35%, and a volume fraction of the lead-free low melting glass particles in the solid content is larger than a volume fraction of the low thermal expansion filler in the solid content.Type: ApplicationFiled: November 1, 2018Publication date: December 17, 2020Inventors: Takashi NAITO, Shinichi TACHIZONO, Kei YOSHIMURA, Yuji HASHIBA, Hironori SUZUKI, Taigo ONODERA, Tatsuya MIYAKE, Akitoyo KONNO
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Patent number: 10701842Abstract: An object of the invention is to provide a power converter that can be reduced in size. To achieve this, a power converter according to the invention includes: water passages arranged radially from an assumed central axis, each being trapezoid-shaped in cross section; and power modules placed between the water passages such that each of the power modules is sandwiched from both surfaces thereof by the water passages. Each of the power modules has an output terminal and positive and negative terminals on an end face located in a centrifugal direction side with respect to the assumed central axis. Any of the power modules and an adjacent one of the power modules are set in a front-back inverted manner.Type: GrantFiled: May 27, 2015Date of Patent: June 30, 2020Assignee: Hitachi, Ltd.Inventors: Eiichi Ide, Akitoyo Konno, Shinji Sugimoto
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Publication number: 20190367405Abstract: The lead-free glass composition contains vanadium oxide, tellurium oxide, alkaline metal oxide, iron oxide, barium oxide, and tungsten oxide while containing substantially no phosphorus oxide, and further contains at least one of additional components including yttrium oxide, lanthanum oxide, cerium oxide, erbium oxide, ytterbium oxide, aluminum oxide, and gallium oxide. A content of the tellurium oxide is equal to or more than 25 mol %, and equal to or less than 43 mol % in terms of oxide TeO2. A content of the alkaline metal oxide is equal to or more than 4 mol %, and equal to or less than 27 mol % in terms of oxide R2O (R: alkali metal element).Type: ApplicationFiled: May 29, 2019Publication date: December 5, 2019Inventors: Takashi NAITO, Taigo ONODERA, Tatsuya MIYAKE, Akitoyo KONNO, Shinichi TACHIZONO, Yuji HASHIBA, Keita YUGUCHI, Takahiro IKABATA, Masaharu MATSUURA
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Patent number: 10410945Abstract: Provided is a semiconductor device with high reliability. In order to solve the above problems, according to the present invention, the semiconductor device includes a heat dissipating substrate, an insulating substrate arranged on the heat dissipating substrate and having a wiring layer, a plurality of semiconductor elements arranged on the insulating substrate, a conductive block electrically connected to a front surface electrode of the semiconductor element, and a terminal electrode, in which the conductive block has a convex portion, and the convex portion is bonded to the insulating substrate.Type: GrantFiled: February 3, 2016Date of Patent: September 10, 2019Assignee: HITACHI, LTD.Inventor: Akitoyo Konno
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Publication number: 20190217574Abstract: There is provided a bonding article comprising: an electrical insulating substrate; a first adhesion layer laminated on one surface of the electrical insulating substrate; and a second adhesion layer laminated on the other surface of the electrical insulating substrate. Both the first adhesion layer and the second adhesion layer include a low-melting-point lead-free glass containing vanadium oxide and tellurium oxide as chemical constituents and having a softening point of 360° C. or lower. And, when contours of the first adhesion layer, the electrical insulating substrate, and the second adhesion layer are projected parallel to one another along the lamination direction, the contour of the first adhesion layer is located inside the contour of the second adhesion layer.Type: ApplicationFiled: January 15, 2019Publication date: July 18, 2019Inventors: Takashi NAITO, Shinichi TACHIZONO, Kei YOSHIMURA, Yuji HASHIBA, Taigo ONODERA, Tatsuya MIYAKE, Akitoyo KONNO
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Patent number: 10177069Abstract: A heat-dissipating structure is formed by bonding a first member and a second member, each being any of a metal, ceramic, and semiconductor, via a die bonding member; or a semiconductor module formed by bonding a semiconductor chip, a metal wire, a ceramic insulating substrate, and a heat-dissipating base substrate including metal, with a die bonding member interposed between each. At least one of the die bonding members includes a lead-free low-melting-point glass composition and metal particles. The lead-free low-melting-point glass composition accounts for 78 mol % or more in terms of the total of the oxides V2O5, TeO2, and Ag2O serving as main ingredients. The content of each of TeO2 and Ag2O is 1 to 2 times the content of V2O5, and at least one of BaO, WO3, and P2O5 is included as accessory ingredients, and at least one of Y2O3, La2O3, and Al2O3 is included as additional ingredients.Type: GrantFiled: September 9, 2015Date of Patent: January 8, 2019Assignee: HITACHI LTD.Inventors: Takashi Naito, Motomune Kodama, Takuya Aoyagi, Shigeru Kikuchi, Takashi Nogawa, Mutsuhiro Mori, Eiichi Ide, Toshiaki Morita, Akitoyo Konno, Taigo Onodera, Tatsuya Miyake, Akihiro Miyauchi
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Publication number: 20180240728Abstract: Provided is a semiconductor device with high reliability. In order to solve the above problems, according to the present invention, the semiconductor device includes a heat dissipating substrate, an insulating substrate arranged on the heat dissipating substrate and having a wiring layer, a plurality of semiconductor elements arranged on the insulating substrate, a conductive block electrically connected to a front surface electrode of the semiconductor element, and a terminal electrode, in which the conductive block has a convex portion, and the convex portion is bonded to the insulating substrate.Type: ApplicationFiled: February 3, 2016Publication date: August 23, 2018Applicant: Hitachi, Ltd.Inventor: Akitoyo KONNO
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Patent number: 10002858Abstract: A first conductive pattern includes: a first feeding point for supplying a potential to the first conductive pattern located at one end thereof; one or more diode elements located over the first conductive pattern; and a plurality of switching elements over the first conductive pattern on the opposite side to the first feeding point with the diode elements in between. A second conductive pattern includes a second feeding point that is provided in proximity to the first feeding point and supplies a potential different from that for the first conductive pattern to the second conductive pattern. The plurality of the switching elements is electrically connected with the second conductive pattern through a plurality of bonding wires. The second conductive pattern is provided with a slit pattern that defines an area of connection of the plurality of the bonding wires with the second conductive pattern over the second conductive pattern.Type: GrantFiled: July 15, 2014Date of Patent: June 19, 2018Assignee: Hitachi, Ltd.Inventors: Toru Masuda, Akitoyo Konno
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Publication number: 20180146577Abstract: An object of the invention is to provide a power converter that can be reduced in size. To achieve this, a power converter according to the invention includes: water passages arranged radially from an assumed central axis, each being trapezoid-shaped in cross section; and power modules placed between the water passages such that each of the power modules is sandwiched from both surfaces thereof by the water passages. Each of the power modules has an output terminal and positive and negative terminals on an end face located in a centrifugal direction side with respect to the assumed central axis. Any of the power modules and an adjacent one of the power modules are set in a front-back inverted manner.Type: ApplicationFiled: May 27, 2015Publication date: May 24, 2018Applicant: HITACHI, LTD.Inventors: Eiichi IDE, Akitoyo KONNO, Shinji SUGIMOTO
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Patent number: 9754855Abstract: An object of the present invention is to provide a semiconductor module that can improve the dissipation of heat from semiconductor elements toward a cooling body. A semiconductor module of the present invention includes a plurality of resin-molded semiconductor devices that are mounted on a single metal base and are electrically connected. The plurality of semiconductor devices each have a structure in which a metal heat dissipation plate, which is formed on a surface of an insulating substrate on the side opposite to a semiconductor-element-mount surface, is exposed from a resin mold, and the metal heat dissipation plate is embedded in each opening provided in the metal base, so that the rear surface of the metal heat dissipation plate becomes a plane to be disposed on a cooling body.Type: GrantFiled: January 27, 2014Date of Patent: September 5, 2017Assignee: Hitachi, Ltd.Inventors: Hiroshi Houzouji, Akitoyo Konno
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Publication number: 20170236768Abstract: A heat-dissipating structure is formed by bonding a first member and a second member, each being any of a metal, ceramic, and semiconductor, via a die bonding member; or a semiconductor module formed by bonding a semiconductor chip, a metal wire, a ceramic insulating substrate, and a heat-dissipating base substrate including metal, with a die bonding member interposed between each. At least one of the die bonding members includes a lead-free low-melting-point glass composition and metal particles. The lead-free low-melting-point glass composition accounts for 78 mol % or more in terms of the total of the oxides V2O5, TeO2, and Ag2O serving as main ingredients. The content of each of TeO2 and Ag2O is 1 to 2 times the content of V2O5, and at least one of BaO, WO3, and P2O5 is included as accessory ingredients, and at least one of Y2O3, La2O3, and Al2O3 is included as additional ingredients.Type: ApplicationFiled: September 9, 2015Publication date: August 17, 2017Applicant: HITACHI, LTD.Inventors: Takashi NAITO, Motomune KODAMA, Takuya AOYAGI, Shigeru KIKUCHI, Takashi NOGAWA, Mutsuhiro MORI, Eiichi IDE, Toshiaki MORITA, Akitoyo KONNO, Taigo ONODERA, Tatsuya MIYAKE, Akihiko MIYAUCHI
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Publication number: 20170170157Abstract: A first conductive pattern includes: a first feeding point for supplying a potential to the first conductive pattern located at one end thereof; one or more diode elements located over the first conductive pattern; and a plurality of switching elements over the first conductive pattern on the opposite side to the first feeding point with the diode elements in between. A second conductive pattern includes a second feeding point that is provided in proximity to the first feeding point and supplies a potential different from that for the first conductive pattern to the second conductive pattern. The plurality of the switching elements is electrically connected with the second conductive pattern through a plurality of bonding wires. The second conductive pattern is provided with a slit pattern that defines an area of connection of the plurality of the bonding wires with the second conductive pattern over the second conductive pattern.Type: ApplicationFiled: July 15, 2014Publication date: June 15, 2017Inventors: Toru MASUDA, Akitoyo KONNO
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Publication number: 20160336252Abstract: An object of the present invention is to provide a semiconductor module that can improve the dissipation of heat from semiconductor elements toward a cooling body. A semiconductor module of the present invention includes a plurality of resin-molded semiconductor devices that are mounted on a single metal base and are electrically connected. The plurality of semiconductor devices each have a structure in which a metal heat dissipation plate, which is formed on a surface of an insulating substrate on the side opposite to a semiconductor-element-mount surface, is exposed from a resin mold, and the metal heat dissipation plate is embedded in each opening provided in the metal base, so that the rear surface of the metal heat dissipation plate becomes a plane to be disposed on a cooling body.Type: ApplicationFiled: January 27, 2014Publication date: November 17, 2016Inventors: Hiroshi HOUZOUJI, Akitoyo KONNO
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Publication number: 20160106010Abstract: Provided is a box-type vehicle-mounted control device that effectively increases the amount of heat transfer from electronic components and a circuit board to a casing (base and cover) and that accordingly has achieved excellent heat dissipation property. The box-type vehicle-mounted control device includes a circuit board 12, a base 13, and a cover 14. In addition, a first heat radiating coating layer 31 is formed on at least one surface of the circuit board 12, and a second heat radiating coating layer 32 is formed on an inner surface of one or both of the base 13 and the cover 14 facing the first heat radiating coating layer 31.Type: ApplicationFiled: May 12, 2014Publication date: April 14, 2016Applicant: Hitachi Automotive Systems, Ltd.Inventors: Maki ITO, Toshiaki ISHII, Masaru KAMOSHIDA, Hideto YOSHINARI, Masato SAITO, Akitoyo KONNO
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Patent number: 9222001Abstract: An adhesive sheet 1 including a binder 3 and adhesive particles 2 mixed in the binder 3 in which the adhesive particle 2 includes an inorganic particle 21 and a polymer 22, the inorganic particle 21 is chemically bonded with the polymer 22, a portion of the adhesive particles 2 is exposed to the surface of the binder 3, the refractive index of the inorganic particle 21 is higher than the refractive index of the binder 3, and the adhesion of the adhesive particle 21 larger than the adhesion of the inorganic particle 21. An adhesive sheet having high refractive index and high adhesion, as well as an optical member and an organic member and an organic light emission device can be provided.Type: GrantFiled: August 16, 2011Date of Patent: December 29, 2015Assignee: HITACHI, LTD.Inventors: Hiroki Kaneko, Hiroshi Sasaki, Akitoyo Konno, Tomokazu Tanase
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Publication number: 20150221626Abstract: A power semiconductor module includes a heat sink; a circuit board connected to the heat sink via a bonding material and formed with a wiring on a front surface of an insulating substrate; a transistor device including a main electrode and a control electrode formed on one surface and a back surface electrode formed on the other surface, the back surface electrode being connected to the circuit board via a bonding material; a first conductive member bonded to the main electrode via a bonding material; and wire or ribbon-shaped connection terminals that electrically connect the first conductive member and the control electrode with another device or the circuit board, wherein the control electrode is disposed at a corner portion of the main electrode, and the first conductive member has a shape in which the first conductive member is cut out at a portion above the control electrode.Type: ApplicationFiled: January 29, 2015Publication date: August 6, 2015Inventors: Shigehisa MOTOWAKI, Hiroshi HOZOJI, Toshiaki MORITA, Akitoyo KONNO
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Patent number: 8866131Abstract: An organic light-emitting device including a first substrate, a second substrate, a light drawing-out layer disposed between the first substrate and the second substrate, a transparent electrode disposed between the light drawing-out layer and the first substrate, a reflection electrode disposed between the transparent electrode and the first substrate, and a first light-emitting unit disposed between the transparent electrode and the reflection electrode. The first light-emitting unit includes a first light-emitting layer that emits a first light-emitting color.Type: GrantFiled: April 2, 2010Date of Patent: October 21, 2014Assignee: Hitachi, Ltd.Inventors: Shingo Ishihara, Hiroshi Sasaki, Akitoyo Konno