Patents by Inventor Yuji Shirai

Yuji Shirai 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: 6946327
    Abstract: A semiconductor integrated circuit device includes a semiconductor substrate, a circuit element formed on one major surface of the semiconductor substrate and constituting an integrated circuit having a plurality of functions or a plurality of characteristics, an internal connection terminal, connected to the integrated circuit, for selecting one of the plurality of functions or one of the characteristics in the integrated circuit, an insulating layer covering the internal connection terminal such that the internal connection terminal is selectively exposed, and an external connection terminal arranged on the insulating layer. One of the plurality of functions or one of the plurality of characteristics is selected by a connection state between the internal connection terminal and the external connection terminal.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: September 20, 2005
    Assignee: Renesas Technology Corp.
    Inventors: Toshio Miyamoto, Ichiro Anjo, Asao Nishimura, Mitsuaki Katagiri, Yuji Shirai, Yoshihide Yamaguchi
  • Patent number: 6867123
    Abstract: A semiconductor wafer which has finished formation of a relocating wiring layer thereon is stored and after determination of a design, solder bumps are formed over bump lands (one end of the relocating wiring layer) in accordance with a pattern which differs with a design, whereby a function or characteristic depending on the design is selected. The semiconductor wafer is then cut into a plurality of semiconductor chips, whereby a wafer level CSP is available.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: March 15, 2005
    Assignee: Renesas Technology Corp.
    Inventors: Mitsuaki Katagiri, Yuji Shirai, Kunihiko Nishi, Takehiro Ohnishi
  • Patent number: 6861742
    Abstract: A semiconductor integrated circuit device includes a semiconductor substrate, a circuit element formed on one major surface of the semiconductor substrate and constituting an integrated circuit having a plurality of functions or a plurality of characteristics, an internal connection terminal, connected to the integrated circuit, for selecting one of the plurality of functions or one of the characteristics in the integrated circuit, an insulating layer covering the internal connection terminal such that the internal connection terminal is selectively exposed, and an external connection terminal arranged on the insulating layer. One of the plurality of functions or one of the plurality of characteristics is selected by a connection state between the internal connection terminal and the external connection terminal.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: March 1, 2005
    Assignee: Renesas Technology Corp.
    Inventors: Toshio Miyamoto, Ichiro Anjo, Asao Nishimura, Mitsuaki Katagiri, Yuji Shirai, Yoshihide Yamaguchi
  • Patent number: 6841881
    Abstract: With respect to two types of chips to be mounted on a main surface of a package substrate, the ratio of chip area to the number of terminals of one chip and that of the other chip are compared with each other and the chip smaller in the ratio is mounted by the wire bonding method, while the chip larger in the ratio is mounted by the flip-chip method. It is possible to reduce the cost of manufacturing a multi-chip module wherein plural types of chips having different terminal pitches are mounted on a wiring substrate.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: January 11, 2005
    Assignee: Renesas Technology Corp.
    Inventors: Mitsuaki Katagiri, Yuji Shirai, Yoshiyuki Kado
  • Patent number: 6828174
    Abstract: With respect to two types of chips to be mounted on a main surface of a package substrate, the ratio of chip area to the number of terminals of one chip and that of the other chip are compared with each other and the chip smaller in the ratio is mounted by the wire bonding method, while the chip larger in the ratio is mounted by the flip-chip method. It is possible to reduce the cost of manufacturing a multi-chip module wherein plural types of chips having different terminal pitches are mounted on a wiring substrate.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: December 7, 2004
    Assignee: Renesas Technology Corp.
    Inventors: Mitsuaki Katagiri, Yuji Shirai, Yoshiyuki Kado
  • Publication number: 20040155351
    Abstract: A semiconductor integrated circuit device includes a semiconductor substrate, a circuit element formed on one major surface of the semiconductor substrate and constituting an integrated circuit having a plurality of functions or a plurality of characteristics, an internal connection terminal, connected to the integrated circuit, for selecting one of the plurality of functions or one of the characteristics in the integrated circuit, an insulating layer covering the internal connection terminal such that the internal connection terminal is selectively exposed, and an external connection terminal arranged on the insulating layer. One of the plurality of functions or one of the plurality of characteristics is selected by a connection state between the internal connection terminal and the external connection terminal.
    Type: Application
    Filed: February 5, 2004
    Publication date: August 12, 2004
    Applicant: Renesas Technology Corporation
    Inventors: Toshio Miyamoto, Ichiro Anjo, Asao Nishimura, Mitsuaki Katagiri, Yuji Shirai, Yoshihide Yamaguchi
  • Publication number: 20040023450
    Abstract: A semiconductor wafer which has finished formation of a relocating wiring layer thereon is stored and after determination of a design, solder bumps are formed over bump lands (one end of the relocating wiring layer) in accordance with a pattern which differs with a design, whereby a function or characteristic depending on the design is selected. The semiconductor wafer is then cut into a plurality of semiconductor chips, whereby a wafer level CSP is available.
    Type: Application
    Filed: July 9, 2003
    Publication date: February 5, 2004
    Inventors: Mitsuaki Katagiri, Yuji Shirai, Kunihiko Nishi, Takehiro Ohnishi
  • Publication number: 20030111737
    Abstract: With respect to two types of chips to be mounted on a main surface of a package substrate, the ratio of chip area to the number of terminals of one chip and that of the other chip are compared with each other and the chip smaller in the ratio is mounted by the wire bonding method, while the chip larger in the ratio is mounted by the flip-chip method. It is possible to reduce the cost of manufacturing a multi-chip module wherein plural types of chips having different terminal pitches are mounted on a wiring substrate.
    Type: Application
    Filed: February 12, 2003
    Publication date: June 19, 2003
    Inventors: Mitsuaki Katagiri, Yuji Shirai, Yoshiyuki Kado
  • Publication number: 20020185744
    Abstract: With respect to two types of chips to be mounted on a main surface of a package substrate, the ratio of chip area to the number of terminals of one chip and that of the other chip are compared with each other and the chip smaller in the ratio is mounted by the wire bonding method, while the chip larger in the ratio is mounted by the flip-chip method. It is possible to reduce the cost of manufacturing a multi-chip module wherein plural types of chips having different terminal pitches are mounted on a wiring substrate.
    Type: Application
    Filed: April 26, 2002
    Publication date: December 12, 2002
    Inventors: Mitsuaki Katagiri, Yuji Shirai, Yoshiyuki Kado
  • Publication number: 20020093082
    Abstract: A semiconductor integrated circuit device includes a semiconductor substrate, a circuit element formed on one major surface of the semiconductor substrate and constituting an integrated circuit having a plurality of functions or a plurality of characteristics, an internal connection terminal, connected to the integrated circuit, for selecting one of the plurality of functions or one of the characteristics in the integrated circuit, an insulating layer covering the internal connection terminal such that the internal connection terminal is selectively exposed, and an external connection terminal arranged on the insulating layer. One of the plurality of functions or one of the plurality of characteristics is selected by a connection state between the internal connection terminal and the external connection terminal.
    Type: Application
    Filed: January 16, 2002
    Publication date: July 18, 2002
    Inventors: Toshio Miyamoto, Ichiro Anjo, Asao Nishimura, Mitsuaki Katagiri, Yuji Shirai, Yoshihide Yamaguchi
  • Patent number: 5525547
    Abstract: A molded semiconductor device has a plurality of slender leads formed with a sealing strip connecting them together to prevent the molding material from leaking out between the leads. Specifically, the sealing strip comprising an adhesive and an electrically insulating material is applied to the leads substantially perpendicular to the lengthwise direction of the leads. The strip is place such that an inner edge thereof substantially lies on a boundary line or inside where the molding terminates. The strip is then thrust into spaces formed between the leads. Thereafter the semiconductor chip is connected to the leads, the semiconductor chip and the leads are placed in a molding unit, the strip serving to block the molding material leaking outside the molding unit.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: June 11, 1996
    Assignees: Hitachi, Ltd., Hitachi ULSI Engineering Corporation
    Inventors: Toshihiro Matsunaga, Yuji Shirai, Takayuki Okinaga, Osamu Horiuchi, Takashi Emata, Makoto Omata
  • Patent number: 5402318
    Abstract: A semiconductor circuit device includes a multi-layered substrate comprising a plurality of signal lines sandwiched between a power source line and a ground line, with insulation layers formed therebetween to reduce fluctuation of a ground line potential at the time of simultaneous switching of the signal lines and to increase the operational speed. The signal lines provides bidirectional current paths and is disposed between the current source line and the ground line. The multi-layered substrate is formed around a semiconductor pellet. Electrode pads are formed on the insulation layer over the ground line on the same level as the signal lines and generally on the same level as the main surface of the semiconductor pellet where electrodes pads are formed. Bonding wires are used to electrically connect the electrode pads on the pellet and the electrodes formed on the insulation layer.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: March 28, 1995
    Assignees: Hitachi, Ltd., Hitachi VLSI Engineering Corp.
    Inventors: Kanji Otsuka, Takayuki Okinaga, Yuji Shirai, Takashi Miwa, Toshihiro Tsuboi, Shouji Matsugami
  • Patent number: 5358032
    Abstract: Disclosed is an LSI package cooling heat sink having a heat diffusion plate and thin wire fins joined to the heat diffusion plate. The heat sink is mounted on an LSI package and the LSI package is cooled by the flowing of fluid through the thin wire fins. The wire fins are made of a net formed of longitudinal thin wires intersecting with horizontal thin wires. The net is formed to continuous rectangular shapes or a swirl shape and joined to the heat diffusion plate. The net is constituted so that the number of the thin wires vertical to the heat diffusion plate is larger than the number of the thin wires parallel thereto and the net is joined to the heat diffusion plate by brazing, diffusion joint, pressure welding or the like.
    Type: Grant
    Filed: February 4, 1993
    Date of Patent: October 25, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Masatsugu Arai, Akiomi Kohno, Toshio Hatada, Yoshihiro Kondo, Toshihiro Komatsu, Kanji Otsuka, Yuji Shirai, Susumu Iwai
  • Patent number: 5315482
    Abstract: A semiconductor apparatus comprises a heat diffusing plate and a surface installing printed board. A semiconductor device of a high heat generation is installed on the heat diffusing plate. A surface installing package and chip parts are installed on both surfaces of the printed board. A through hole is formed at the center of the printed board so that the semiconductor device is located at the center. The heat diffusing plate on which the semiconductor device has been installed and the surface installing printed board are connected and integrated.
    Type: Grant
    Filed: October 15, 1992
    Date of Patent: May 24, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Akira Tanaka, Hiroichi Shinohara, Kazuji Yamada, Takao Ohba, Akira Yamagiwa, Hitoshi Yoshidome, Yuji Shirai, Toshio Hatada, Munehisa Kishimoto, Michiharu Honda
  • Patent number: 5195576
    Abstract: An LSI cooling apparatus having various structures is used in electronic devices such as computer systems. In particular, the LSI cooling of apparatus is suitable for cooling of LSIs having high heat generating densities. In a cooling apparatus of the present invention, a heat sink is constructed to be small in pressure loss and excellent in cooling performance. This is because the heat sink comprises thin wire fins so set that the Reynold's number may not exceed 40. As a result, LSIs generating a large amount of heat can be cooled. Further, a heat sink having rigidity can be obtained by disposing wide-width wire drawn substances in thin wires or by using supports. Further, a computer comprising LSIs equipped with heat sinks can cope with various cooling air sending methods and it can be cooled with low noises.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: March 23, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Toshio Hatada, Hitoshi Matsushima, Yoshihiro Kondou, Hiroshi Inoue, Kanji Otsuka, Yuji Shirai, Takao Ohba, Akira Yamagiwa
  • Patent number: 4860243
    Abstract: A fuzzy logic circuit comprising a current mirror comprising an FET, a first input current source connected to the input side of the current mirror, a second input current source, a wired OR connected at its input side to the output side of the current mirror and to the second input current source, and an output terminal connected to the output side of the wired OR.
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: August 22, 1989
    Assignee: Omron Tateisi Electronics Co.
    Inventors: Fumio Ueno, Takeshi Yamakawa, Yuji Shirai
  • Patent number: 4694418
    Abstract: A fuzzy logic circuit comprising a current mirror comprising an FET, a first input current source connected to the input side of the current mirror, a second input current source, a wired OR connected at its input side to the output side of the current mirror and to the second input current source, and an output terminal connected to the output side of the wired OR.
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: September 15, 1987
    Assignee: Omron Tateisi Electronics Co.
    Inventors: Fumio Ueno, Takeshi Yamakawa, Yuji Shirai
  • Patent number: 4527730
    Abstract: A wire bonding apparatus which can variously change the shape of a loop of a bonding wire and can restrict the loop shape in accordance with specifications of an article being wire bonded. In the wire bonding apparatus, a wire guide unit moving both vertically and transversely, independently of a bonding tool, is disposed in proximity of the bonding tool which moves relative to the article to be wire bonded and which connects the wire between a first bonding region and the second bonding region. A mechanism is provided which changes the shape of the loop of the bonding wire when the wire guide unit moves vertically and transversely.
    Type: Grant
    Filed: January 27, 1983
    Date of Patent: July 9, 1985
    Assignee: Hitachi, Ltd.
    Inventors: Yuji Shirai, Kanji Otsuka, Tamotsu Usami, Yasuyuki Yamasaki