Patents by Inventor Toshitsune Iijima

Toshitsune Iijima 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: 8673690
    Abstract: A method for manufacturing a semiconductor device according to one embodiment of the present invention includes a step of covering a plurality of base plates in which respective semiconductor chips are mounted, by means of a sealing resin such that a plurality of base plates are spaced apart from each other, and a step of cutting the sealing resin between a plurality of base plates.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: March 18, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Toshitsune Iijima
  • Publication number: 20110221066
    Abstract: A method for manufacturing a semiconductor device according to an aspect of the present invention includes the steps of: forming a metallic film; forming plural connecting conductors including engaging portions on the metallic film; forming a first resin; curing a second resin; forming a wiring pattern; forming a second external electrode; and cutting the second resin. The step of forming the first resin is the step of inserting and bringing a projected first external electrode provided in each of plural semiconductor chips in and into contact with each of the engaging portions of the plural connecting conductors, and forming a first resin between the plural semiconductor chips and the metallic film. The step of curing the second resin is the step of covering the plural semiconductor chips with the second resin to cure the second resin.
    Type: Application
    Filed: March 3, 2011
    Publication date: September 15, 2011
    Inventors: Kazuhiro WATANABE, Toshitsune IIjima
  • Publication number: 20110215461
    Abstract: A method for manufacturing a semiconductor device according to one embodiment of the present invention includes a step of covering a plurality of base plates in which respective semiconductor chips are mounted, by means of a sealing resin such that a plurality of base plates are spaced apart from each other, and a step of cutting the sealing resin between a plurality of base plates.
    Type: Application
    Filed: March 3, 2011
    Publication date: September 8, 2011
    Inventor: Toshitsune IIJIMA
  • Publication number: 20100213599
    Abstract: A semiconductor device includes: a flat plate; a semiconductor chip which is disposed on one main surface of the flat plate and whose surface opposite an element circuit surface is fixedly bonded; a single layer of an insulating material layer formed continuously on the element circuit surface of the semiconductor chip and on the main surface of the flat plate; an opening formed at a position, in the insulating material layer, above an electrode disposed on the element circuit surface of the semiconductor chip; a conductive part formed in the opening so as to be connected to the electrode of the semiconductor chip; a wiring layer formed on the insulating material layer so as to be connected to the conductive part, and partly led out to a peripheral area of the semiconductor chip; and external electrodes formed on the wiring layer.
    Type: Application
    Filed: February 11, 2010
    Publication date: August 26, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kazuhiro Watanabe, Seiki Takata, Toshitsune Iijima, Tomomi Sato, Shigenori Sawachi, Takumi Kawana, Osamu Yamagata, Hiroshi Nomura, Yumiko Oshima
  • Patent number: 7138297
    Abstract: A semiconductor chip is formed by dividing a semiconductor wafer by use of the laser dicing technique. The semiconductor chip has a laser dicing region on the side surface thereof. A dummy wiring layer is formed along the laser dicing region on the surface layer of the laser dicing region. A laser beam is applied to the dummy wiring layer to divide the semiconductor wafer.
    Type: Grant
    Filed: August 16, 2004
    Date of Patent: November 21, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshitsune Iijima, Ninao Sato
  • Patent number: 7091624
    Abstract: A semiconductor chip is formed by dividing a semiconductor wafer by use of the laser dicing technique. The semiconductor chip has a laser dicing region on the side surface thereof. A dummy wiring layer is formed along the laser dicing region on the surface layer of the laser dicing region. A laser beam is applied to the dummy wiring layer to divide the semiconductor wafer.
    Type: Grant
    Filed: April 18, 2003
    Date of Patent: August 15, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshitsune Iijima, Ninao Sato
  • Publication number: 20050017326
    Abstract: A semiconductor chip is formed by dividing a semiconductor wafer by use of the laser dicing technique. The semiconductor chip has a laser dicing region on the side surface thereof. A dummy wiring layer is formed along the laser dicing region on the surface layer of the laser dicing region. A laser beam is applied to the dummy wiring layer to divide the semiconductor wafer.
    Type: Application
    Filed: August 16, 2004
    Publication date: January 27, 2005
    Inventors: Toshitsune Iijima, Ninao Sato
  • Publication number: 20040169258
    Abstract: A semiconductor wafer includes a plurality of element-forming regions, a dicing line region and an insulating film. The dicing line region separates the element-forming regions from each other. The insulating film covers the element-forming regions and the dicing line region. The insulating film insulating film is formed of multi-layered insulating layers which insulate respective wiring layers of a multi-layer form. A separation region is formed at least in a portion of the insulating film located on the dicing line region, so that the separation region separates the insulating film on the dicing line region from the insulating film on the element-forming regions.
    Type: Application
    Filed: December 11, 2003
    Publication date: September 2, 2004
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Toshitsune Iijima
  • Publication number: 20040155358
    Abstract: A first level packaging assembly includes a chip-mounting base defined by a first surface and a second surface opposite to the first surface; a plurality of external connection lands disposed on the first surface; a plurality of solder balls connected to the external connection lands; a plurality of internal connection lands disposed on the second surface; a plurality of solder joints connected to the internal connection lands including solder materials having lower melting temperature than the solder balls; a semiconductor chip defined by a third surface and a fourth surface opposite to the third surface, connected to the solder joints on the third surface; and an underfill resin sandwiched between the second and third surfaces so as to mold the solder joints.
    Type: Application
    Filed: August 7, 2003
    Publication date: August 12, 2004
    Inventor: Toshitsune Iijima
  • Publication number: 20040137702
    Abstract: A semiconductor chip is formed by dividing a semiconductor wafer by use of the laser dicing technique. The semiconductor chip has a laser dicing region on the side surface thereof. A dummy wiring layer is formed along the laser dicing region on the surface layer of the laser dicing region. A laser beam is applied to the dummy wiring layer to divide the semiconductor wafer.
    Type: Application
    Filed: April 18, 2003
    Publication date: July 15, 2004
    Inventors: Toshitsune Iijima, Ninao Sato
  • Patent number: 6713869
    Abstract: A semiconductor package of this invention comprises an electrode pad arranged on a semiconductor chip, a bonding wire, an end of which is coupled to the electrode pad, and a connection pad arranged parallel to a direction of arrangement of the bonding wire, to which another end of the bonding wire is coupled, and a pitch of the connection pad is wider than that of the electrode pad.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: March 30, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takeshi Kusakabe, Toshitsune Iijima
  • Publication number: 20030071364
    Abstract: A semiconductor package of this invention comprises an electrode pad arranged on a semiconductor chip, a bonding wire, an end of which is coupled to the electrode pad, and a connection pad arranged parallel to a direction of arrangement of the bonding wire, to which another end of the bonding wire is coupled, and a pitch of the connection pad is wider than that of the electrode pad.
    Type: Application
    Filed: September 27, 2002
    Publication date: April 17, 2003
    Inventors: Takeshi Kusakabe, Toshitsune Iijima
  • Patent number: 6429372
    Abstract: An IC chip and overhang portions are stuck to tape by an adhesive agent layer having elasticity. A plurality of solder balls are attached to the tape. By soldering the solder balls to a printed board, a semiconductor device is mounted. In the case where a temperature cycle has been caused, thermal stress occurs between the IC chip and the printed board or between the hangover portion and the printed board because of a difference in coefficient of thermal expansion between the IC chip or the hangover portion and the printed board. However, this thermal stress is absorbed by the elasticity of the adhesive agent layer. As a result, little thermal stress is applied to solder balls. Even if the above described temperature cycle is repeated, therefore, the solder balls are electrically connected to the printed board stably over a long period of time. In addition, the area of the tape is widened by the area of the hangover portions.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: August 6, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hideo Taguchi, Junichi Asada, Jun Omori, Toshikazu Mino, Naohisa Okumura, Hiroshi Shimoe, Toshitsune Iijima, Katsuhiko Oyama
  • Patent number: D473198
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: April 15, 2003
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Isao Ozawa, Toshitsune Iijima