Patents by Inventor Rei YONEYAMA

Rei YONEYAMA 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).

  • Patent number: 10290555
    Abstract: A semiconductor device comprises a power device, a sensor which measures a physical state of the power device to transmit a signal according to the physical state, and a main electrode terminal through which a main current of the power device flows. The semiconductor device further comprises a sensor signal terminal connected to the sensor for receiving a signal from the sensor, a driving terminal which receives driving power for driving the power device, and an open bottomed case which houses the power device, the sensor, the main electrode terminal, the sensor signal terminal and the driving terminal. The first and second terminals electrically conduct with each other to form a double structure. Also, the sensor signal terminal and the driving terminal each have a first terminal and a second terminal which are not embedded within the case.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: May 14, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Motonobu Joko, Rei Yoneyama
  • Publication number: 20190123012
    Abstract: A semiconductor device including a first semiconductor switching element having a first gate pad, a plurality of first emitter pads, and a first collector pad, a first wire for connecting adjacent pads out of the plurality of first emitter pads, a first output wire for connecting one of the plurality of first emitter pads to an output, a first controller for applying a gate voltage to the first gate pad, a first emitter wire that is directly connected to a first extraction pad which is any one pad of the plurality of first emitter pads, and is connected to the first controller to give a ground potential of the first controller, and a second semiconductor switching element having a second gate pad, a second emitter pad and a second collector pad connected to the output.
    Type: Application
    Filed: April 23, 2018
    Publication date: April 25, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Taichi OBARA, Rei YONEYAMA, Masayuki ANDO
  • Publication number: 20190103329
    Abstract: A semiconductor apparatus includes: a case made of resin; an insert terminal including an external terminal portion embedded in the case and having a first terminal exposed from the case, and an internal terminal portion bent in a L shape with respect to a second terminal of the external terminal portion and having a first surface exposed from the case and an anchor part in close contact with the case; and a bonding wire bonded to the first surface of the internal terminal portion.
    Type: Application
    Filed: March 15, 2018
    Publication date: April 4, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Nobuchika AOKI, Rei YONEYAMA, Akira GOTO, Akihiko YAMASHITA
  • Patent number: 10116302
    Abstract: A high-side switching element is provided between a main output terminal having an intermediate potential and a high-side terminal. A signal transmission circuit includes a first point, a second point, a signal switching element, and a diode. The intermediate potential is applied to the first point. A referred potential between the low-side potential and the high-side potential is applied to the second point. The signal switching element has a first end connected to the first point and a second end, and is switched in accordance with a conversion signal. The diode is provided between the second point and the second end of the signal switching element and has a direction with which a forward current can flow by a voltage between the first point and the second point in a case where the intermediate potential is the low-side potential.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: October 30, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Haruhiko Murakami, Rei Yoneyama, Masayuki Ando, Hiroyuki Okabe
  • Patent number: 10062632
    Abstract: A semiconductor device includes a base plate, a case, a power semiconductor element, and a control semiconductor element. Case is provided on base plate. Power semiconductor element is disposed over base plate in case. Control semiconductor element is disposed in case. Case has an opening formed therein opposite to base plate. The semiconductor device further includes a cover to close opening in case. Cover has a hole formed in at least a portion of a region overlapping control semiconductor element in plan view.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: August 28, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Haruhiko Murakami, Rei Yoneyama, Yoshitaka Kimura, Takayuki Shirahama
  • Publication number: 20180019180
    Abstract: A semiconductor module includes an insulating substrate including an insulating layer, a first metal pattern formed on an upper surface of the insulating layer, and a second metal pattern formed on a lower surface of the insulating layer, a semiconductor chip that is formed of SiC and is fixed to the first metal pattern with a first metal joining member, and a heat sink that is fixed to the second metal pattern with a second metal joining member, wherein the semiconductor chip has a thickness that is equal to or larger than 0.25 mm and equal to or smaller than 0.35 mm, and the insulating layer has a thickness that is larger than the thickness of the semiconductor chip by a factor of 2.66 inclusive to 5 inclusive.
    Type: Application
    Filed: March 9, 2017
    Publication date: January 18, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Haruhiko MURAKAMI, Rei YONEYAMA, Takami OTSUKI, Akihiko YAMASHITA
  • Publication number: 20170330810
    Abstract: Provided are a power device, a sensor which measures a physical state of the power device to transmit a signal according to the physical state, a main electrode terminal through which a main current of the power device flows, a sensor signal terminal which is connected to the sensor to receive a signal from the sensor, a driving terminal which receives driving power for driving the power device, and an open bottomed case which houses the power device, the sensor, the main electrode terminal, the sensor signal terminal and the driving terminal, the sensor signal terminal and the driving terminal each having a first terminal and a second terminal which are provided away from an inner side wall surface of the case, the first and second terminals electrically conducting to each other to form a double structure.
    Type: Application
    Filed: December 9, 2016
    Publication date: November 16, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Motonobu JOKO, Rei YONEYAMA
  • Publication number: 20170301603
    Abstract: A semiconductor device includes a base plate, a case, a power semiconductor element, and a control semiconductor element. Case is provided on base plate. Power semiconductor element is disposed over base plate in case. Control semiconductor element is disposed in case. Case has an opening formed therein opposite to base plate. The semiconductor device further includes a cover to close opening in case. Cover has a hole formed in at least a portion of a region overlapping control semiconductor element in plan view.
    Type: Application
    Filed: December 21, 2016
    Publication date: October 19, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Haruhiko MURAKAMI, Rei YONEYAMA, Yoshitaka KIMURA, Takayuki SHIRAHAMA
  • Patent number: 9774112
    Abstract: A semiconductor device includes a case, a circuit substrate set in the case and having an electric circuit formed thereon, and a plurality of terminals arranged in the case by being spaced apart from each other, each terminal having a base portion electrically connected to the electric circuit in the case, and a trunk portion bent by forming a fold between the base portion and the trunk portion so as to rise from the base portion at the end of the base portion, the trunk portion having a press-fit portion formed at its distal end, wherein the fold is inclined relative to a longitudinal axis of the base portion, and wherein restitution directions in which the press-fit portions restitute from their contractions caused by press fitting are turned aside one from another between each adjacent pair of the terminals.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: September 26, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshitaka Kimura, Rei Yoneyama, Akihiko Yamashita
  • Publication number: 20170221853
    Abstract: An electrode terminal includes a body and a first bonding part. The body includes a first metal material. Then, the first bonding part is bonded to one end of the body, and includes a second metal material which is a clad material other than the first metal material. The first bonding part is ultrasonically bondable to a first bonded member. An elastic part which is elastically deformable is provided between the one end of the body and the other end of the body.
    Type: Application
    Filed: October 6, 2016
    Publication date: August 3, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Rei YONEYAMA, Yoshitaka KIMURA, Akihiko YAMASHITA
  • Patent number: 9723718
    Abstract: An electronic component mounting device includes an insulating substrate having a metal pattern formed thereon and a MELF electronic component. The MELF electronic component is fitted into a first receiving portion configured with the metal pattern and the insulating substrate exposed from a lacking portion of the metal pattern. The electronic component mounting device further includes a conductive member formed between the MELF electronic component and the metal pattern, and the conductive member is not formed between the MELF electronic component and the insulating substrate.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: August 1, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Taichi Obara, Rei Yoneyama, Takami Otsuki, Eiju Shitama
  • Patent number: 9653369
    Abstract: It is an object to provide a power semiconductor module having a case shared for base plates of different sizes and having a high-stability base plate. The power semiconductor module according to the present invention includes: a base plate; an insulating substrate disposed on a first main surface of the base plate; a semiconductor chip disposed on an insulating substrate; a case for enclosing the base plate except a second main surface of the base plate facing the first main surface, the insulating substrate, and the semiconductor chip; and a spacer provided between the outer periphery of the base plate and the inner periphery of the case and in contact with both. The spacer has a bonding surface with a side surface of the base plate and the first main surface in the contact with the outer periphery of the base plate.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: May 16, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshitaka Kimura, Rei Yoneyama, Ryo Goto, Akihiko Yamashita
  • Patent number: 9627293
    Abstract: In a conventional semiconductor device, a pattern serving as a heat dissipating material is formed by applying a phase transition material. Provided is a semiconductor device that can reduce collapse of a pattern shape even if a shock is applied to the pattern formed with the phase transition material that is liquefied when the environmental temperature is not sufficiently controlled. The semiconductor device includes semiconductor elements mounted inside a semiconductor module (10); a heat radiating surface (13), formed in the semiconductor module (10), dissipating heat generated in the semiconductor elements to a heat radiator; a pattern (14) formed on the heat radiating surface and made from a phase transition material; and a film (15) serving as a first film that covers the pattern (14).
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: April 18, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Rei Yoneyama, Kozo Harada, Isao Oshima, Yoshitaka Otsubo, Rena Kawahara
  • Patent number: 9613888
    Abstract: A semiconductor device in the preferred embodiment includes: a lead frame comprising a die pad and an electrode terminal; and at least one semiconductor chip bonded to a surface of the die pad, wherein the lead frame excluding a bottom surface thereof and the semiconductor chip are sealed by a sealing resin, and an unevenness is introduced on a bonding interface between the surface of the die pad and the semiconductor chip.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: April 4, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Rei Yoneyama, Hiroyuki Okabe, Nobuya Nishida, Taichi Obara
  • Publication number: 20170074921
    Abstract: A life estimation circuit includes a temperature detector configured to detect temperature of a power element unit, an inflection point detection unit configured to detect an inflection point of temperature variation in the power element unit based on an output signal from the temperature detector, an operation unit configured to determine an absolute value of a difference between the temperature of the power element unit at an inflection point detected this time and the temperature of the power element unit at an inflection point detected last time, a count circuit configured to count the number of times that the absolute value of the difference in temperature has reached a threshold temperature, and a signal generation unit configured to output, when a count value from the count circuit reaches a threshold number of times, an alarm signal indicating that the power element is about to reach the end of its life.
    Type: Application
    Filed: June 13, 2016
    Publication date: March 16, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Shiori UOTA, Fumitaka TAMETANI, Takahiro INOUE, Rei YONEYAMA
  • Publication number: 20170063071
    Abstract: The present invention relates to a semiconductor device and it is an object of the present invention to provide a semiconductor device that makes it easy to change a specification on driving of a power semiconductor element or control of a protection operation thereof. The semiconductor device includes a power semiconductor element, a main electrode terminal of the power semiconductor element, a sensor section that emits a signal corresponding to a physical state of the power semiconductor element, a sensor signal terminal connected to the sensor section, a drive terminal that supplies power to drive the power semiconductor element and a case that accommodates the power semiconductor element, the main electrode terminal, the sensor section, the sensor signal terminal and the drive terminal, and the sensor signal terminal and the drive terminal are provided so as to be connectable from outside the case.
    Type: Application
    Filed: April 8, 2016
    Publication date: March 2, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Rei YONEYAMA, Fumitaka TAMETANI, Manabu MATSUMOTO, Haruhiko TAKEMOTO, Hiroshi YOSHIDA, Motonobu JOKO
  • Patent number: 9578754
    Abstract: A metal base substrate of the present invention includes a copper plate made of copper, a metal layer that is formed on the copper plate and is made of a metal different from the copper, an insulating resin sheet that is formed by bonding a sheet made of an insulating resin onto the metal layer, and a circuit pattern formed on the insulating resin sheet.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: February 21, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mariko Ono, Akira Goto, Rei Yoneyama, Takami Otsuki
  • Publication number: 20160365662
    Abstract: A semiconductor device includes a case, a circuit substrate set in the case and having an electric circuit formed thereon, and a plurality of terminals arranged in the case by being spaced apart from each other, each terminal having a base portion electrically connected to the electric circuit in the case, and a trunk portion bent by forming a fold between the base portion and the trunk portion so as to rise from the base portion at the end of the base portion, the trunk portion having a press-fit portion formed at its distal end, wherein the fold is inclined relative to a longitudinal axis of the base portion, and wherein restitution directions in which the press-fit portions restitute from their contractions caused by press fitting are turned aside one from another between each adjacent pair of the terminals.
    Type: Application
    Filed: March 15, 2016
    Publication date: December 15, 2016
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshitaka KIMURA, Rei YONEYAMA, Akihiko YAMASHITA
  • Patent number: D773413
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: December 6, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Rei Yoneyama, Takehiro Araki, Akira Goto, Yoshitaka Kimura, Akihiko Yamashita, Mariko Ono, Ryo Goto
  • Patent number: D783549
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: April 11, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Rei Yoneyama, Takehiro Araki, Yoshitaka Kimura, Akira Goto, Akihiko Yamashita, Mariko Ono, Ryo Goto