Patents by Inventor Tokuji Toida

Tokuji Toida 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).

  • Publication number: 20070235371
    Abstract: A method for carrying a semiconductor device includes: (a) providing semiconductor devices each having a main surface, a back surface, and a plurality of external terminals; (b) providing a tray having a front surface, a rear surface, an electronic tag imbedded in the tray, first concaved portions formed on the front surface, second concaved portions formed on the rear surface, the electronic tag constituted by a non-contact recognition type chip having a memory circuit in which recognizable information is stored, a depth of the first concaved portion is deeper than a depth of the second concaved portion; (c) housing the semiconductor devices into the first concaved portions respectively in such a manner that the back surface of the semiconductor device being oppose to a bottom of the first concaved portion; and (d) carrying the tray with the semiconductor devices.
    Type: Application
    Filed: June 8, 2007
    Publication date: October 11, 2007
    Inventors: Hiromichi Suzuki, Wahei Kitamura, Tokuji Toida, Toshimasa Shirai
  • Patent number: 7261207
    Abstract: A method for carrying a semiconductor device includes: (a) providing semiconductor devices each having a main surface, a back surface, and a plurality of external terminals; (b) providing a tray having a front surface, a rear surface, an electronic tag imbedded in the tray, first concaved portions formed on the front surface, second concaved portions formed on the rear surface, the electronic tag constituted by a non-contact recognition type chip having a memory circuit in which recognizable information is stored, a depth of the first concaved portion is deeper than a depth of the second concaved portion; (c) housing the semiconductor devices into the first concaved portions respectively in such a manner that the back surface of the semiconductor device being oppose to a bottom of the first concaved portion; and (d) carrying the tray with the semiconductor devices.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: August 28, 2007
    Assignees: Renesas Technology Corp., Hitachi Transport System Ltd.
    Inventors: Hiromichi Suzuki, Wahei Kitamura, Tokuji Toida, Toshimasa Shirai
  • Publication number: 20050189627
    Abstract: A surface mounting method for mounting semiconductor devices suppresses solder peeling defects which tried to occur during mounting. The method used for mounting semiconductor devices includes a process for preparing the semiconductor devices by obtaining multiple terminals by exposing a section of each of multiple leads protruding from a rear side of the plastic casing, and forming a layer of solder by solidifying a molten solder material; a process for supplying a solder paste material to multiple electrodes on a printed circuit board; and a process for melting the solder paste of the multiple electrodes and connecting each of the multiple terminals with the multiple electrodes.
    Type: Application
    Filed: February 25, 2005
    Publication date: September 1, 2005
    Inventors: Fujio Ito, Hiromichi Suzuki, Takashi Miwa, Tokuji Toida
  • Publication number: 20050189629
    Abstract: A method for manufacturing a semiconductor device includes the steps of providing a semiconductor device of a surface mounted type in which the main surface of a chip mounting portion connected to a semiconductor chip is formed so as to be smaller than the main surface of the semiconductor chip, accommodating the semiconductor device into a non-moistureproof, e.g., flammable, packing, and shipping the packed semiconductor device. The non-moistureproof packing may have a moisture permeability of T T?1 g/m2/24 hr. The method may also include providing a second semiconductor device of a surface-mounted type in which the main surface of a chip mounting portion connected to a semiconductor chip is formed so as to be larger than the main surface of the semiconductor chip, moistureproof-packing the second semiconductor device, and shipping and packed second semiconductor device.
    Type: Application
    Filed: February 28, 2005
    Publication date: September 1, 2005
    Inventors: Fujio Ito, Hiromichi Suzuki, Tokuji Toida
  • Patent number: 6803258
    Abstract: In a semiconductor device having a heat radiation plate, the tips of inner leads connected to a semiconductor chip have a lead width w and a lead thickness t, the width being less than the thickness. The inner leads are secured to the heat radiation plate. Fastening the inner leads to the heat radiation plate supports the latter and eliminates the need for suspending leads. A lead pitch p, the lead width w and lead thickness t of the inner lead tips connected to the semiconductor chip have the relations of w<t and p≦1.2t, with the inner leads secured to the heat radiation plate. The heat radiation plate has slits made therein to form radially shaped heat propagation paths between a semiconductor chip mounting area and the inner leads.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: October 12, 2004
    Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd., Hitachi Hokkai Semiconductor, Ltd.
    Inventors: Fujio Ito, Hiroaki Tanaka, Hiromichi Suzuki, Tokuji Toida, Takafumi Konno, Kunihiro Tsubosaki, Shigeki Tanaka, Kazunari Suzuki, Akihiko Kameoka
  • Publication number: 20040181938
    Abstract: Clean accommodation and carrying of semiconductor devices are to be attained. A stack type tray is used which comprises a base portion 1d with plural pockets formed therein in a matrix shape and side walls formed along peripheral edges of the base portion. In the tray is buried an electronic tag which is constituted by a mu-chip having memory with non-contact recognizable information stored therein. Information pieces such as ID, manufacturer's name and product number of the tray, as well as product name, quantity and lot number of an object to be accommodated, are stored in the mu-chip of the electronic tag, and by accommodating a to-be-accommodated object in the tray equipped with the mu-chip and carrying it, the generation of dust can be prevented because paper label is not used.
    Type: Application
    Filed: February 4, 2004
    Publication date: September 23, 2004
    Applicants: Renesas Technology Corp, Hitachi Transport System, Ltd.
    Inventors: Hiromichi Suzuki, Wahei Kitamura, Tokuji Toida, Toshimasa Shirai
  • Publication number: 20040126932
    Abstract: A method of manufacturing a semiconductor device is provided including preparing a lead frame having a plurality of leads, wherein the lead widths of the lead tips are smaller than the lead thickness of the tips. A plate is also prepared having a first portion and second portion on a main surface thereof, the second portion being located at the outer periphery of said first portion. A semiconductor chip having a semiconductor element and a plurality of electrodes is fastened to the first portion of the plate and the lead tips are fastened on the second portion of the plate. Bonding wires are then formed to electrically connect the lead tips and the electrodes of the semiconductor chip, and then the lead tips, the plate, the semiconductor chip and the bonding wires are sealed with a molding member.
    Type: Application
    Filed: December 15, 2003
    Publication date: July 1, 2004
    Inventors: Fujio Ito, Hiroaki Tanaka, Hiromichi Suzuki, Tokuji Toida, Takafumi Konno, Kunihiro Tsubosaki, Shigeki Tanaka, Kazunari Suzuki, Akihiko Kameoka
  • Patent number: 6673655
    Abstract: In a semiconductor device having a heat radiation plate, the tips of inner leads connected to a semiconductor chip have a lead width w and a lead thickness t, the width being less than the thickness. The inner leads are secured to the heat radiation plate. Fastening the inner leads to the heat radiation plate supports the latter and eliminates the need for suspending leads. A lead pitch p, the lead width w and lead thickness t of the inner lead tips connected to the semiconductor chip have the relations of w<t and p≦1.2t, with the inner leads secured to the heat radiation plate. The heat radiation plate has slits made therein to form radially shaped heat propagation paths between a semiconductor chip mounting area and the inner leads.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: January 6, 2004
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd., Hitachi Hokkai Semiconductor, Ltd.
    Inventors: Fujio Ito, Hiroaki Tanaka, Hiromichi Suzuki, Tokuji Toida, Takafumi Konno, Kunihiro Tsubosaki, Shigeki Tanaka, Kazunari Suzuki, Akihiko Kameoka
  • Publication number: 20020192871
    Abstract: In a semiconductor device having a heat radiation plate, the tips of inner leads connected to a semiconductor chip have a lead width w and a lead thickness t, the width being less than the thickness. The inner leads are secured to the heat radiation plate. Fastening the inner leads to the heat radiation plate supports the latter and eliminates the need for suspending leads. A lead pitch p, the lead width w and lead thickness t of the inner lead tips connected to the semiconductor chip have the relations of w<t and p≧1.2 t, with the inner leads secured to the heat radiation plate. The heat radiation plate has slits made therein to form radially shaped heat propagation paths between a semiconductor chip mounting area and the inner leads.
    Type: Application
    Filed: July 26, 2002
    Publication date: December 19, 2002
    Inventors: Fujio Ito, Hiroaki Tanaka, Hiromichi Suzuki, Tokuji Toida, Takafumi Konno, Kunihiro Tsubosaki, Shigeki Tanaka, Kazunari Suzuki, Akihiko Kameoka
  • Publication number: 20020137261
    Abstract: In a semiconductor device having a heat radiation plate, the tips of inner leads connected to a semiconductor chip have a lead width w and a lead thickness t, the width being less than the thickness. The inner leads are secured to the heat radiation plate Fastening the inner leads to the heat radiation plate supports the latter and eliminates the need for suspending leads. A lead pitch p, the lead width w and lead thickness t of the inner lead tips connected to the semiconductor chip have the relations of w<t and p≦1.2t, with the inner leads secured to the heat radiation plate. The heat radiation plate has slits made therein to form radially shaped heat propagation paths between a semiconductor chip mounting area and the inner leads. In a molding member-sealed semiconductor device wherein the semiconductor chip is fixed to the heat radiation plate, the tip thickness t′ of the inner leads is made less than the thickness t of the other portions of the inner leads secured to the heat radiation plate.
    Type: Application
    Filed: May 23, 2002
    Publication date: September 26, 2002
    Inventors: Fujio Ito, Hiroaki Tanaka, Hiromichi Suzuki, Tokuji Toida, Takafumi Konno, Kunihiro Tsubosaki, Shigeki Tanaka, Kazunari Suzuki, Akihiko Kameoka
  • Publication number: 20020137262
    Abstract: In a semiconductor device having a heat radiation plate, the tips of inner leads connected to a semiconductor chip have a lead width w and a lead thickness t, the width being less than the thickness. The inner leads are secured to the heat radiation plate. Fastening the inner leads to the heat radiation plate supports the latter and eliminates the need for suspending leads. A lead pitch p, the lead width w and lead thickness t of the inner lead tips connected to the semiconductor chip have the relations of w<t and p≦1.2t, with the inner leads secured to the heat radiation plate. The heat radiation plate has slits made therein to form radially shaped heat propagation paths between a semiconductor chip mounting area and the inner leads.
    Type: Application
    Filed: May 23, 2002
    Publication date: September 26, 2002
    Inventors: Fujio Ito, Hiroaki Tanaka, Hiromichi Suzuki, Tokuji Toida, Takafumi Konno, Kunihiro Tsubosaki, Shigeki Tanaka, Kazunari Suzuki, Akihiko Kameoka
  • Patent number: 6396142
    Abstract: In a semiconductor device having a heat radiation plate, the tips of inner leads connected to a semiconductor chip have a lead width w and a lead thickness t, the width being less than the thickness. The inner leads are secured to the heat radiation plate. Fastening the inner leads to the heat radiation plate supports the latter and eliminates the need for suspending leads. A lead pitch p, the lead width w and lead thickness t of the inner lead tips connected to the semiconductor chip have the relations of w<t and p≦1.2t, with the inner leads secured to the heat radiation plate. The heat radiation plate has slits made therein to form radially shaped heat propagation paths between a semiconductor chip mounting area and the inner leads.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: May 28, 2002
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd., Hitachi Hokkai Semiconductor, Ltd.
    Inventors: Fujio Ito, Hiroaki Tanaka, Hiromichi Suzuki, Tokuji Toida, Takafumi Konno, Kunihiro Tsubosaki, Shigeki Tanaka, Kazunari Suzuki, Akihiko Kameoka