Patents by Inventor Hajime Akiyama
Hajime Akiyama 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: 9312160Abstract: A method of attaching a wafer by suction, includes a step of mounting a wafer on a right arm and a left arm of a transfer jig, moving the transfer jig toward a wafer suction stage in such a manner that a facing right arm surface of the right arm slides along and in contact with a first side surface of the wafer suction stage and a facing left arm surface of the left arm slides along and in contact with a second side surface of the wafer suction stage until the wafer comes to lie directly above a mounting surface of the wafer suction stage, mounting the wafer on the mounting surface by moving the transfer jig downward toward the wafer suction stage while maintaining the contacts, and attaching the wafer to the mounting surface by suction.Type: GrantFiled: September 14, 2012Date of Patent: April 12, 2016Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hajime Akiyama, Akira Okada, Kinya Yamashita
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Publication number: 20160053992Abstract: Problem to be Solved To provide a waste gasification melting apparatus which, even if a fuel gas is used as an alternative to a part of the coke, the temperature of the coke bed can be sufficiently raised, and a method using the same. Solution A waste gasification melting apparatus including an oxygen rich air supply apparatus 14 for blowing oxygen rich air into a tuyere 5, and a fuel gas supply apparatus 15 for supplying a fuel gas to the tuyere 5, and a controller 16 for controlling the oxygen rich air supply apparatus 14; the oxygen rich air supply apparatus 14 mixing air and oxygen to prepare oxygen rich air and supply the oxygen rich air to the tuyere 5; and the controller 16 controlling the amount of air to be mixed and the amount of oxygen to be mixed in the oxygen rich air supply apparatus 14 so as to give an oxygen concentration of the oxygen rich air in accordance with the amount of fuel gas supplied to the tuyere 5 from the fuel gas supply apparatus 15.Type: ApplicationFiled: March 27, 2014Publication date: February 25, 2016Applicant: JFE Engineering CorporationInventors: Satoshi Horiuchi, Keiichi Okuyama, Takeshi Uchiyama, Hajime Akiyama, Junya Watanabe, Takashi Nakayama, Kazumasa Wakimoto, Akio Shimomura
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Patent number: 9257316Abstract: A semiconductor testing jig is provided with a conductive stage including a plurality of mounting portions on which a plurality of vertical semiconductor devices are each individually disposed with lower surface electrodes being in contact with the plurality of mounting portions, an insulating frame portion having a lattice pattern that is disposed on the stage and surrounds each of the plurality of mounting portions in plan view to define each of the mounting portions, and an abrasive layer disposed in a position in the frame portion, the position facing each of the vertical semiconductor devices disposed on the mounting portions.Type: GrantFiled: June 27, 2014Date of Patent: February 9, 2016Assignee: Mitsubishi Electric CorporationInventors: Akira Okada, Takaya Noguchi, Norihiro Takesako, Kinya Yamashita, Hajime Akiyama
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Patent number: 9207257Abstract: An inspection apparatus includes an insulating substrate, a socket in which a body portion having a through-hole in a wall thereof is integrally formed with a connection portion secured to the insulating substrate, and a contact probe detachably secured to the socket.Type: GrantFiled: March 4, 2013Date of Patent: December 8, 2015Assignee: Mitsubishi Electric CorporationInventors: Akira Okada, Hajime Akiyama, Kinya Yamashita
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Patent number: 9188624Abstract: An inspection apparatus includes a probe substrate, a socket secured to the probe substrate, a heating element wire wound around the socket, a probe tip detachably connected to the socket, a stage on which an object to be measured is mounted, and a heating unit for heating the stage.Type: GrantFiled: January 14, 2013Date of Patent: November 17, 2015Assignee: Mitsubishi Electric CorporationInventors: Akira Okada, Hajime Akiyama, Kinya Yamashita
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Patent number: 9157931Abstract: It is an object of the present invention to provide a probe card capable of controlling generation of a scratch or an indentation in a connection pad and capable of controlling generation of heat in a connection pad and its vicinity having contacted a contact probe at low cost and in a simple way. A probe card includes a probe substrate, at least one contact probe electrically connected to a signal line provided to an insulating base of the probe substrate and fixed to the insulating base, and at least one engagement member installed on the contact probe at a position near a tip end portion of the contact probe. The engagement member has at least one engagement portion that makes abutting contact with another predetermined member during operation to restrain the operation of the contact probe.Type: GrantFiled: March 1, 2013Date of Patent: October 13, 2015Assignee: Mitsubishi Electric CorporationInventors: Akira Okada, Hajime Akiyama, Kinya Yamashita
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Patent number: 9121899Abstract: A semiconductor device comprises: a semiconductor element including an electrode; a leading line electrically connected to the electrode, passing above the electrode, and led to a side thereof; and a current sensor sensing current flowing through the leading line. The current sensor includes a magneto-resistance element placed above the electrode and below the leading line. A resistance value of the magneto-resistance element varies linearly according to magnetic field generated by the current.Type: GrantFiled: June 16, 2014Date of Patent: September 1, 2015Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hajime Akiyama, Akira Okada
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Patent number: 9117656Abstract: A semiconductor cleaning device includes an external electrode opposed to a side surface of the semiconductor device; a base configured to allow arrangement of the semiconductor device, and having an opening positioned between the side surface of the semiconductor device in the arranged state and the external electrode, and located below the side surface of the semiconductor device; a frame having an electrically insulating property, being in contact with the external electrode, arranged on the base and opposed to the side surface of the semiconductor device; and suction means connected to the opening in the base and being capable of taking in the foreign matter through the opening. Thereby, the semiconductor cleaning device and a semiconductor cleaning method that can remove the foreign matter adhered to the side surface of the semiconductor device and can prevent re-adhesion of the removed foreign matter can be obtained.Type: GrantFiled: August 27, 2012Date of Patent: August 25, 2015Assignee: Mitsubishi Electric CorporationInventors: Akira Okada, Takaya Noguchi, Hajime Akiyama
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Patent number: 9117880Abstract: A semiconductor wafer is subjected to a protection film formation step process as a process before evaluation of electrical characteristics. In this process, after an insulating film serving as a protection film is formed, a photolithography process and an etching process are performed so as to form a protection film having a plurality of openings exposing an emitter electrode. Then, electrical characteristics are evaluated by bringing a contact probe in contact with the exposed emitter electrode through each opening.Type: GrantFiled: February 24, 2014Date of Patent: August 25, 2015Assignee: Mitsubishi Electric CorporationInventors: Hajime Akiyama, Akira Okada, Kinya Yamashita
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Publication number: 20150115989Abstract: A semiconductor evaluation apparatus includes a jig for evaluation and a probe substrate. The jig for evaluation is provided such that a plurality of semiconductor devices can be placed thereon. The probe substrate is provided so as to face the jig for evaluation, and includes a contact probe. The jig for evaluation includes a plurality of housing portions divided by a frame portion such that the plurality of semiconductor devices can be separately placed on the plurality of housing portions, respectively. The semiconductor evaluation apparatus is configured such that the contact probe can be brought into contact with a plurality of elements in the state where a space is provided by bringing the frame portion and the probe substrate in proximity to each other. In this space, each of the plurality of semiconductor devices is placed between a corresponding one of the plurality of housing portions and the probe substrate.Type: ApplicationFiled: June 17, 2014Publication date: April 30, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Akira OKADA, Takaya NOGUCHI, Norihiro TAKESAKO, Kinya YAMASHITA, Hajime AKIYAMA
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Publication number: 20150091599Abstract: A semiconductor testing jig is provided with a conductive stage including a plurality of mounting portions on which a plurality of vertical semiconductor devices are each individually disposed with lower surface electrodes being in contact with the plurality of mounting portions, an insulating frame portion having a lattice pattern that is disposed on the stage and surrounds each of the plurality of mounting portions in plan view to define each of the mounting portions, and an abrasive layer disposed in a position in the frame portion, the position facing each of the vertical semiconductor devices disposed on the mounting portions.Type: ApplicationFiled: June 27, 2014Publication date: April 2, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Akira OKADA, Takaya NOGUCHI, Norihiro TAKESAKO, Kinya YAMASHITA, Hajime AKIYAMA
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Patent number: 8980655Abstract: A test apparatus includes a foreign matter removal unit having a first slope provided with an abrasive coating or an adhesive sheet and a second slope provided with an abrasive coating or an adhesive sheet, the second slope facing the first slope in such a manner that an upper end of the second slope is spaced from an upper end of the first slope a greater distance than a lower end of the second slope is spaced from a lower end of the first slope, a test unit for testing electrical characteristics of a semiconductor chip, and a transfer unit for holding and releasing the semiconductor chip at a position above the first and second slopes and transferring the semiconductor chip to the test unit.Type: GrantFiled: April 18, 2014Date of Patent: March 17, 2015Assignee: Mitsubishi Electric CorporationInventors: Akira Okada, Takaya Noguchi, Norihiro Takesako, Kinya Yamashita, Hajime Akiyama
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Patent number: 8981805Abstract: An inspection apparatus includes an insulating substrate, a probe pin having a body portion secured to the insulating substrate, a tip portion connected to one end of the body portion and disposed on the back surface side of the insulating substrate, and a connection portion connected to the other end of the body portion and disposed on the front surface side of the insulating substrate, and a heat-radiating terminal in contact with the connection portion, wherein a current is applied through the heat-radiating terminal and the probe pin to an object to measured, and wherein the heat-radiating terminal discharges heat from the probe pin.Type: GrantFiled: March 1, 2013Date of Patent: March 17, 2015Assignee: Mitsubishi Electric CorporationInventors: Akira Okada, Hajime Akiyama, Kinya Yamashita
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Patent number: 8975681Abstract: In one surface of a semiconductor substrate, an active region in which main current flows and an IGBT is disposed is formed. A termination structure portion serving as an electric-field reduction region is formed laterally with respect to the active region. In the termination structure portion, a porous-oxide-film region, a p-type guard ring region, and an n+-type channel stopper region are formed. A plurality of floating electrodes are formed to contact the surface of the porous-oxide-film region. Another plurality of floating electrodes are formed to contact a first insulating film.Type: GrantFiled: May 31, 2013Date of Patent: March 10, 2015Assignee: Mitsubishi Electric CorporationInventors: Hajime Akiyama, Akira Okada
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Publication number: 20150044788Abstract: A test apparatus includes a foreign matter removal unit having a first slope provided with an abrasive coating or an adhesive sheet and a second slope provided with an abrasive coating or an adhesive sheet, the second slope facing the first slope in such a manner that an upper end of the second slope is spaced from an upper end of the first slope a greater distance than a lower end of the second slope is spaced from a lower end of the first slope, a test unit for testing electrical characteristics of a semiconductor chip, and a transfer unit for holding and releasing the semiconductor chip at a position above the first and second slopes and transferring the semiconductor chip to the test unit.Type: ApplicationFiled: April 18, 2014Publication date: February 12, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Akira OKADA, Takaya NOGUCHI, Norihiro TAKESAKO, Kinya YAMASHITA, Hajime AKIYAMA
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Publication number: 20140347081Abstract: A semiconductor device assessment apparatus that electrically assesses a semiconductor device formed on a semiconductor substrate includes a holding unit having a surface to hold the semiconductor substrate thereon, and a detection unit to detect irregularity on the surface of the holding unit. The holding unit on the surface includes a plurality of grooves formed such that when the semiconductor substrate is held on the surface, the grooves overlap a periphery of the semiconductor substrate and also have a portion located outer than the periphery of the semiconductor substrate.Type: ApplicationFiled: February 24, 2014Publication date: November 27, 2014Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hajime AKIYAMA, Akira OKADA, Kinya YAMASHITA
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Publication number: 20140346514Abstract: A semiconductor device comprises: a semiconductor element including an electrode; a leading line electrically connected to the electrode, passing above the electrode, and led to a side thereof; and a current sensor sensing current flowing through the leading line. The current sensor includes a magneto-resistance element placed above the electrode and below the leading line. A resistance value of the magneto-resistance element varies linearly according to magnetic field generated by the current.Type: ApplicationFiled: June 16, 2014Publication date: November 27, 2014Applicant: Mitsubishi Electric CorporationInventors: Hajime Akiyama, Akira Okada
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Publication number: 20140342544Abstract: A semiconductor wafer is subjected to a protection film formation step process as a process before evaluation of electrical characteristics. In this process, after an insulating film serving as a protection film is formed, a photolithography process and an etching process are performed so as to form a protection film having a plurality of openings exposing an emitter electrode. Then, electrical characteristics are evaluated by bringing a contact probe in contact with the exposed emitter electrode through each opening.Type: ApplicationFiled: February 24, 2014Publication date: November 20, 2014Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hajime AKIYAMA, Akira OKADA, Kinya YAMASHITA
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Patent number: 8823360Abstract: A semiconductor device comprises: a semiconductor element including an electrode; a leading line electrically connected to the electrode, passing above the electrode, and led to a side thereof; and a current sensor sensing current flowing through the leading line. The current sensor includes a magneto-resistance element placed above the electrode and below the leading line. A resistance value of the magneto-resistance element varies linearly according to magnetic field generated by the current.Type: GrantFiled: August 19, 2011Date of Patent: September 2, 2014Assignee: Mitsubishi Electric CorporationInventors: Hajime Akiyama, Akira Okada
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Publication number: 20140210500Abstract: A semiconductor evaluating device includes a chuck stage for holding a semiconductor device serving as a measuring object, a contact probe for evaluating an electrical characteristic of the semiconductor device by getting contact with the semiconductor device held on the chuck stage, and a fluid spraying portion for spraying a fluid onto the semiconductor device.Type: ApplicationFiled: October 28, 2013Publication date: July 31, 2014Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hajime AKIYAMA, Akira OKADA, Kinya YAMASHITA