Patents by Inventor Toshiyasu Kawai

Toshiyasu Kawai 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: 7843045
    Abstract: The object of the present invention is to provide an adhesion film for semiconductor that is capable of bonding a semiconductor chip to a lead frame tightly at an adhesion temperature lower than that of the adhesion film of a traditional polyimide resin without generation of voids and that can also be used for protection of lead frame-exposed area, a thermoplastic resin composition for semiconductor for use in the adhesive agent layer therein, and a lead frame having the adhesive film and a semiconductor device; and, to achieve the object, the present invention provides a thermoplastic resin composition for semiconductor, comprising a thermoplastic resin obtained in reaction of an amine component containing an aromatic diamine mixture (A) containing 1,3-bis(3-aminophenoxy)benzene, 3-(3?-(3?-aminophenoxy)phenyl)amino-1-(3?-(3?-aminophenoxy)phenoxy)benzene and 3,3?-bis(3?-aminophenoxy)diphenylether, and an acid component (C), an adhesion film for semiconductor using the same, a lead frame having the adhesion fi
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: November 30, 2010
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Kiyohide Tateoka, Toshiyasu Kawai, Yoshiyuki Tanabe, Tomohiro Nagoya, Naoko Tomoda
  • Publication number: 20090091012
    Abstract: The object of the present invention is to provide an adhesion film for semiconductor that is capable of bonding a semiconductor chip to a lead frame tightly at an adhesion temperature lower than that of the adhesion film of a traditional polyimide resin without generation of voids and that can also be used for protection of lead frame-exposed area, a thermoplastic resin composition for semiconductor for use in the adhesive agent layer therein, and a lead frame having the adhesive film and a semiconductor device; and, to achieve the object, the present invention provides a thermoplastic resin composition for semiconductor, comprising a thermoplastic resin obtained in reaction of an amine component containing an aromatic diamine mixture (A) containing 1,3-bis(3-aminophenoxy)benzene, 3-(3?-(3?-aminophenoxy)phenyl)amino-1-(3?-(3?-aminophenoxy)phenoxy)benzene and 3,3?-bis(3?-aminophenoxy)diphenylether, and an acid component (C), an adhesion film for semiconductor using the same, a lead frame having the adhesion fi
    Type: Application
    Filed: July 18, 2006
    Publication date: April 9, 2009
    Inventors: Kiyohide Tateoka, Toshiyasu Kawai, Yoshiyuki Tanabe, Tomohiro Nagoya, Naoko Tomoda
  • Publication number: 20090053498
    Abstract: An adhesive film for semiconductor use of the present invention is used in a method in which, after the adhesive film for semiconductor use is laminated to one side of a metal sheet, the metal sheet is processed to give a wiring circuit, a semiconductor die is mounted and molded, and the adhesive film is then peeled off. The adhesive film includes a resin layer A formed on one side or both sides of a support film, the 90 degree peel strength between the resin layer A and the metal sheet prior to the processing of the metal sheet laminated with the adhesive film for semiconductor use to give the wiring circuit is 20 N/m or greater at 25° C., and the 90 degree peel strengths, after molding with a molding compound the wiring circuit laminated with the adhesive film for semiconductor use, between the resin layer A and the wiring circuit and between the resin layer A and the molding compound are both 1000 N/m or less at least one point in the temperature range of 0° C. to 250° C.
    Type: Application
    Filed: October 21, 2008
    Publication date: February 26, 2009
    Inventors: Hidekazu MATSUURA, Toshiyasu Kawai
  • Patent number: 7479412
    Abstract: An adhesive film for semiconductor, which comprises at least one resin layer, and, after bonded to a lead frame, has at 25° C. a 90°-peel strength of at least 5 N/m between the resin layer and the lead frame, and, after a lead frame is bonded to the adhesive film for semiconductor and sealed with a sealing material, has at least at one point of temperatures ranging from 0 to 250° C. a 90°-peel strength of at most 1000 N/m between the resin layer and each of the lead frame and the sealing material; a lead frame and a semiconductor device using the adhesive film for semiconductor; and a method of producing a semiconductor device.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: January 20, 2009
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Toshiyasu Kawai, Hidekazu Matsuura
  • Patent number: 7449367
    Abstract: An adhesive film for semiconductor use of the present invention is used in a method in which, after the adhesive film for semiconductor use is laminated to one side of a metal sheet, the metal sheet is processed to give a wiring circuit, a semiconductor die is mounted and molded, and the adhesive film is then peeled off. The adhesive film includes a resin layer A formed on one side or both sides of a support film, the 90 degree peel strength between the resin layer A and the metal sheet prior to the processing of the metal sheet laminated with the adhesive film for semiconductor use to give the wiring circuit is 20 N/m or greater at 25° C., and the 90 degree peel strengths, after molding with a molding compound the wiring circuit laminated with the adhesive film for semiconductor use, between the resin layer A and the wiring circuit and between the resin layer A and the molding compound are both 1000 N/m or less at at least one point in the temperature range of 0° C. to 250° C.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: November 11, 2008
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Hidekazu Matsuura, Toshiyasu Kawai
  • Publication number: 20080194062
    Abstract: An adhesive film for semiconductor, which comprises at least one resin layer, and, after bonded to a lead frame, has at 25° C. a 90°-peel strength of at least 5 N/m between the resin layer and the lead frame, and, after a lead frame is bonded to the adhesive film for semiconductor and sealed with a sealing material, has at least at one point of temperatures ranging from 0 to 250° C. a 90°-peel strength of at most 1000 N/m between the resin layer and each of the lead frame and the sealing material; a lead frame and a semiconductor device using the adhesive film for semiconductor; and a method of producing a semiconductor device.
    Type: Application
    Filed: April 8, 2008
    Publication date: August 14, 2008
    Inventors: Toshiyasu KAWAI, Hidekazu Matsuura
  • Patent number: 7378722
    Abstract: An adhesive film for semiconductor, which comprises at least one resin layer, and, after bonded to a lead frame, has at 25° C. a 90°-peel strength of at least 5 N/m between the resin layer and the lead frame, and, after a lead frame is bonded to the adhesive film for semiconductor and sealed with a sealing material, has at least at one point of temperatures ranging from 0 to 250° C. a 90°-peel strength of at most 1000 N/m between the resin layer and each of the lead frame and the sealing material; a lead frame and a semiconductor device using the adhesive film for semiconductor; and a method of producing a semiconductor device.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: May 27, 2008
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Toshiyasu Kawai, Hidekazu Matsuura
  • Publication number: 20060138616
    Abstract: An adhesive film for semiconductor, which comprises at least one resin layer, and, after bonded to a lead frame, has at 25° C. a 90°-peel strength of at least 5 N/m between the resin layer and the lead frame, and, after a lead frame is bonded to the adhesive film for semiconductor and sealed with a sealing material, has at least at one point of temperatures ranging from 0 to 250° C. a 90°-peel strength of at most 1000 N/m between the resin layer and each of the lead frame and the sealing material; a lead frame and a semiconductor device using the adhesive film for semiconductor; and a method of producing a semiconductor device.
    Type: Application
    Filed: February 6, 2006
    Publication date: June 29, 2006
    Inventors: Toshiyasu Kawai, Hidekazu Matsuura
  • Patent number: 7057266
    Abstract: An adhesive film for semiconductor, which comprises at least one resin layer, and, after bonded to a lead frame, has at 25° C. a 90°-peel strength of at least 5 N/m between the resin layer and the lead frame, and, after a lead frame is bonded to the adhesive film for semiconductor and sealed with a sealing material, has at least at one point of temperatures ranging from 0 to 250° C. a 90°-peel strength of at most 1000 N/m between the resin layer and each of the lead frame and the sealing material; a lead frame and a semiconductor device using the adhesive film for semiconductor; and a method of producing a semiconductor device.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: June 6, 2006
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Toshiyasu Kawai, Hidekazu Matsuura
  • Publication number: 20060043607
    Abstract: An adhesive film for semiconductor use of the present invention is used in a method in which, after the adhesive film for semiconductor use is laminated to one side of a metal sheet, the metal sheet is processed to give a wiring circuit, a semiconductor die is mounted and molded, and the adhesive film is then peeled off. The adhesive film includes a resin layer A formed on one side or both sides of a support film, the 90 degree peel strength between the resin layer A and the metal sheet prior to the processing of the metal sheet laminated with the adhesive film for semiconductor use to give the wiring circuit is 20 N/m or greater at 25° C., and the 90 degree peel strengths, after molding with a molding compound the wiring circuit laminated with the adhesive film for semiconductor use, between the resin layer A and the wiring circuit and between the resin layer A and the molding compound are both 1000 N/m or less at at least one point in the temperature range of 0° C. to 250° C.
    Type: Application
    Filed: February 19, 2004
    Publication date: March 2, 2006
    Inventors: Hidekazu Matsuura, Toshiyasu Kawai
  • Publication number: 20040124544
    Abstract: An adhesive film for semiconductor, which comprises at least one resin layer, and, after bonded to a lead frame, has at 25° C. a 90°-peel strength of at least 5 N/m between the resin layer and the lead frame, and, after a lead frame is bonded to the adhesive film for semiconductor and sealed with a sealing material, has at least at one point of temperatures ranging from 0 to 250° C a 90°-peel strength of at most 1000 N/m between the resin layer and each of the lead frame and the sealing material; a lead frame and a semiconductor device using the adhesive film for semiconductor; and a method of producing a semiconductor device.
    Type: Application
    Filed: December 15, 2003
    Publication date: July 1, 2004
    Inventors: Toshiyasu Kawai, Hidekazu Matsuura
  • Patent number: 6700185
    Abstract: An adhesive film for semiconductor, which comprises at least one resin layer, and, after bonded to a lead frame, has at 25° C. a 90°-peel strength of at least 5 N/m between the resin layer and the lead frame, and, after a lead frame is bonded to the adhesive film for semiconductor and sealed with a sealing material, has at least at one point of temperatures ranging from 0 to 250° C. a 90°-peel strength of at most 1000 N/m between the resin layer and each of the lead frame and the sealing material; a lead frame and a semiconductor device using the adhesive film for semiconductor; and a method of producing a semiconductor device.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: March 2, 2004
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Toshiyasu Kawai, Hidekazu Matsuura
  • Publication number: 20020151659
    Abstract: The present invention is to provide a resin composition excellent in moisture absorption property, heat resistance, adhesive property and electric characteristics, and excellent in molding property, and suitable for an insulating material such as a multilayer wiring substrate, electronic parts, etc., and an adhesive film.
    Type: Application
    Filed: October 7, 1999
    Publication date: October 17, 2002
    Inventors: MASAHIRO SUZUKI, SHIN NISHIMURA, MASAO SUZUKI, AKIO TAKAHASHI, AKIRA KAGEYAMA, YOSHIHIKO HONDA, TOSHIYASU KAWAI, SHINJI IIOKA, YOSHIHIRO NOMURA
  • Patent number: 6462148
    Abstract: A resin composition useful as an adhesive film and insulating material for a multilayer wiring substrate or electronic parts comprises (A) a polymer containing a quinoline ring represented by the formula (1) in the structure such as 6,6′-bis(2-(4-fluorophenyl)-4-phenylquinoline) and 4,4′-(1,1,1,3,3,3-hexafluoro-2,2-propylidene)bisphenol, and (B) a bismaleimide compound represented by the formula (2) such as 2,2-bis((4-maleimidophenoxy)phenyl)propane.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: October 8, 2002
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Masahiro Suzuki, Shin Nishimura, Masao Suzuki, Akio Takahashi, Akira Kageyama, Yoshihiko Honda, Toshiyasu Kawai, Shinji Iioka, Yoshihiro Nomura
  • Patent number: 5663264
    Abstract: A transparent resin obtained by polymerizing a monomer having an alkylene oxide group, a polyfunctional (meth)acrylate having a divalent branched hydrocarbon group and other copolymerizable vinyl monomer, if necessary, is suitable as an elementary material for a plastic lens with excellent heat resistance and hue.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: September 2, 1997
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Toshiyasu Kawai, Minoru Suzuki, Hiromasa Kawai, Fumiaki Kanega
  • Patent number: 5583191
    Abstract: A transparent resin obtained by polymerizing a monomer having an alkylene oxide group, a polyfunctional (meth)acrylate having a divalent branched hydrocarbon group and other copolymerizable vinyl monomer, if necessary, is suitable as an elementary material for a plastic lens with excellent heat resistance and hue.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 10, 1996
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Toshiyasu Kawai, Minoru Suzuki, Hiromasa Kawai, Fumiaki Kanega