Patents by Inventor Toru Saga

Toru Saga 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: 7170153
    Abstract: In order to manufacture a thin and small semiconductor device at low cost, the semiconductor device and its manufacturing method are disclosed. The semiconductor device comprises: a film wiring substrate made of insulating resin; a semiconductor chip fixed to the main surface of the wiring substrate; conductive wires to connect terminals of the semiconductor chip and wirings on the main surface of the wiring substrate; an encapsulation made of insulating resin integrally laminated on the main surface of the wiring substrate and covering the semiconductor chip and the bonding wires; and conductors penetrating through the wiring substrate and having one ends connected to the wirings on the main surface of the wiring substrate and the other ends protruding to the rear surface of the wiring substrate to form external terminals formed of bump electrodes, wherein the external terminals form the ball grid array.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: January 30, 2007
    Assignee: Elpida Memory, Inc.
    Inventor: Toru Saga
  • Publication number: 20050023660
    Abstract: In order to manufacture a thin and small semiconductor device at low cost, the semiconductor device and its manufacturing method are disclosed. The semiconductor device comprises: a film wiring substrate made of insulating resin; a semiconductor chip fixed to the main surface of the wiring substrate; conductive wires to connect terminals of the semiconductor chip and wirings on the main surface of the wiring substrate; an encapsulation made of insulating resin integrally laminated on the main surface of the wiring substrate and covering the semiconductor chip and the bonding wires; and conductors penetrating through the wiring substrate and having one ends connected to the wirings on the main surface of the wiring substrate and the other ends protruding to the rear surface of the wiring substrate to form external terminals formed of bump electrodes, wherein the external terminals form the ball grid array.
    Type: Application
    Filed: August 24, 2004
    Publication date: February 3, 2005
    Inventor: Toru Saga
  • Patent number: 6791173
    Abstract: In order to manufacture a thin and small semiconductor device at low cost, the semiconductor device and its manufacturing method are disclosed. The semiconductor device comprises: a film wiring substrate made of insulating resin; a semiconductor chip fixed to the main surface of the wiring substrate; conductive wires to connect terminals of the semiconductor chip and wirings on the main surface of the wiring substrate; an encapsulation made of insulating resin integrally laminated on the main surface of the wiring substrate and covering the semiconductor chip and the bonding wires; and conductors penetrating through the wiring substrate and having one ends connected to the wirings on the main surface of the wiring substrate and the other ends protruding to the rear surface of the wiring substrate to form external terminals formed of bump electrodes, wherein the external terminals form the ball grid array.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: September 14, 2004
    Assignees: Hitachi, Ltd., Akita Electronics Systems Co., Ltd.
    Inventor: Toru Saga
  • Publication number: 20040090829
    Abstract: A less expensive memory card is provided. An electronic device according to the present invention comprises a substrate having wiring lines with plural external electrode terminals exposed to a first surface of the substrate, a sealing member formed of an insulating resin to cover the whole of a second surface as a back surface opposite to the first surface, and one or plural semiconductor elements covered with the sealing member and fixed to the second surface of the substrate, the semiconductor element(s) having electrodes connected electrically to the wiring lines through a connecting means. The substrate is quadrangular in shape and a card-shaped package is constituted by the substrate and the sealing member. One or plural semiconductor elements constituting a memory chip(s), as well as a control chip for controlling the memory chip(s), are fixed to the substrate to form a memory card. A direction recognizing portion is formed at edges of the substrate and the sealing member.
    Type: Application
    Filed: July 22, 2003
    Publication date: May 13, 2004
    Inventors: Tomomi Miura, Toru Saga, Shinei Sato, Takeshi Ito
  • Patent number: 6670220
    Abstract: A non-leaded semiconductor device which does not cause a flaw and contamination with a foreign substance on mounting surfaces of external electrode terminals of another non-leaded semiconductor device, and a method of fabricating the same. In fabrication of the non-leaded semiconductor device, a matrix-type leadframe containing a matrix of a plurality of unit leadframe patterns is prepared, a semiconductor chip is secured on each unit leadframe pattern, conductive wires are connected between electrodes of the semiconductor chip and inner ends of terminal leads of each unit leadframe pattern, and then single-sided molding is performed to encapsulate the semiconductor chip, conductive wires, and inner end parts of terminal leads in a package part. In this single-sided molding, a contact-preventive part thicker than the package part is formed outside the package part using injected resin.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: December 30, 2003
    Assignees: Hitachi, Ltd., Akita Electronics Co., Ltd.
    Inventors: Tadaki Sakuraba, Youkou Ito, Hidehiro Takeshima, Yoshiaki Tamai, Toru Saga
  • Publication number: 20030218262
    Abstract: In order to manufacture a thin and small semiconductor device at low cost, the semiconductor device and its manufacturing method are disclosed. The semiconductor device comprises: a film wiring substrate made of insulating resin; a semiconductor chip fixed to the main surface of the wiring substrate; conductive wires to connect terminals of the semiconductor chip and wirings on the main surface of the wiring substrate; an encapsulation made of insulating resin integrally laminated on the main surface of the wiring substrate and covering the semiconductor chip and the bonding wires; and conductors penetrating through the wiring substrate and having one ends connected to the wirings on the main surface of the wiring substrate and the other ends protruding to the rear surface of the wiring substrate to form external terminals formed of bump electrodes, wherein the external terminals form the ball grid array.
    Type: Application
    Filed: May 20, 2003
    Publication date: November 27, 2003
    Inventor: Toru Saga
  • Publication number: 20020024127
    Abstract: A non-leaded semiconductor device which does not cause a flaw and contamination with a foreign substance on mounting surfaces of external electrode terminals of another non-leaded semiconductor device, and a method of fabricating the same. In fabrication of the non-leaded semiconductor device, a matrix-type leadframe containing a matrix of a plurality of unit leadframe patterns is prepared, a semiconductor chip is secured on each unit leadframe pattern, conductive wires are connected between electrodes of the semiconductor chip and inner ends of terminal leads of each unit leadframe pattern, and then single-sided molding is performed to encapsulate the semiconductor chip, conductive wires, and inner end parts of terminal leads in a package part. In this single-sided molding, a contact-preventive part thicker than the package part is formed outside the package part using injected resin.
    Type: Application
    Filed: August 28, 2001
    Publication date: February 28, 2002
    Applicant: Hitachi, Ltd.
    Inventors: Tadaki Sakuraba, Youkou Ito, Hidehiro Takeshima, Yoshiaki Tamai, Toru Saga