Patents by Inventor Isao Ichikawa

Isao Ichikawa 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: 9296925
    Abstract: A film is obtained by forming a film of and curing an energy ray-curable composition including a polymerizable silicone compound and an energy ray-curable resin having a viscosity at 25° C. of 100-5,000,000 mPa·S.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: March 29, 2016
    Assignee: LINTEC Corporation
    Inventors: Yoji Wakayama, Isao Ichikawa, Takashi Akutsu
  • Publication number: 20160017188
    Abstract: An adhesive composition is described, which includes an acrylic polymer, an epoxy thermosetting resin having an unsaturated hydrocarbon group, and a thermosetting agent. The adhesive composition achieves high reliability in a package in which a semiconductor chip of reduced thickness is mounted even when exposed to severe reflow conditions. An adhesive sheet having an adhesive layer that includes the above adhesive composition is also described.
    Type: Application
    Filed: September 29, 2015
    Publication date: January 21, 2016
    Inventors: Naoya Saiki, Isao Ichikawa, Hironori Shizuhata, Osamu Yamazaki
  • Patent number: 9184082
    Abstract: An adhesive composition including an acrylic polymer, an epoxy thermosetting resin having an unsaturated hydrocarbon group and a thermosetting agent. Also provided is an adhesive sheet having an adhesive layer including the above-mentioned adhesive composition.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: November 10, 2015
    Assignee: Lintec Corporation
    Inventors: Naoya Saiki, Isao Ichikawa, Hironori Shizuhata, Osamu Yamazaki
  • Publication number: 20150225613
    Abstract: A film is obtained by forming a film of and curing an energy ray-curable composition including a polymerizable silicone compound and an energy ray-curable resin having a viscosity at 25° C. of 100-5,000,000 mPa·S.
    Type: Application
    Filed: August 2, 2013
    Publication date: August 13, 2015
    Inventors: Yoji Wakayama, Isao Ichikawa, Takashi Akutsu
  • Patent number: 8716401
    Abstract: A semiconductor chip laminate comprises a plurality of semiconductor chips and an adhesive layer through which the plurality of semiconductor chips are laminated, wherein the adhesive layer is composed of an adhesive composition comprising an acrylic polymer (A); an epoxy resin (B); a thermal curing agent (C); and a certain organophosphonium compound (D) as a thermal curing accelerator, and the content of the organophosphonium compound (D) relative to 100 parts by weight in total of the epoxy resin (B) and the thermal curing agent (C) is 0.001 to 15 parts by weight.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: May 6, 2014
    Assignee: Lintec Corporation
    Inventors: Yasunori Karasawa, Isao Ichikawa
  • Patent number: 8703585
    Abstract: An adhesive composition for a semiconductor includes an acrylic polymer (A), an epoxy-based heat curable resin (B), a heat curing agent (C), a silane compound (D) having an organic functional group, molecular weight of 300 or more and an alkoxy equivalent of larger than 13 mmol/g, and a silane compound (E) having an organic functional group, molecular weight of 300 or less and an alkoxy equivalent of 13 mmol/g or less.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: April 22, 2014
    Assignee: LINTEC Corporation
    Inventors: Isao Ichikawa, Masaaki Furudate, Mikihiro Kashio, Sou Miyata, Kaisuke Yanagimoto, Yuichi Kozone
  • Patent number: 8545663
    Abstract: In a process for manufacturing a semiconductor device comprising heating a wiring board on which a chip and an uncured adhesive layer are laminated for curing the adhesive layer, the improvement includes performing a statically pressurizing step before the adhesive layer is cured, in which step the wiring board on which the chip and the uncured adhesive layer are laminated is subjected to a static pressure greater than atmospheric pressure by not less than 0.05 MPa. According to the process, voids are easily eliminated irrespective of the design of the wiring board, and the adhesive is prevented from curling up on the chip.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: October 1, 2013
    Assignee: Lintec Corporation
    Inventors: Osamu Yamazaki, Isao Ichikawa, Naoya Saiki
  • Publication number: 20130244402
    Abstract: An adhesive composition includes an acrylic polymer (A), a heat curable resin (B) having unsaturated hydrocarbon group, and a filler (C) having reactive double bond on a surface.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 19, 2013
    Applicant: LINTEC CORPORATION
    Inventors: Sayaka Tsuchiyama, Isao Ichikawa
  • Publication number: 20130244401
    Abstract: An adhesive composition includes an acrylic polymer (A), a heat curable resin (B) having unsaturated hydrocarbon group, and a coupling agent (C) having reactive a double bond group.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 19, 2013
    Applicant: LINTEC CORPORATION
    Inventors: Sayaka Tsuchiyama, Isao Ichikawa
  • Patent number: 8247503
    Abstract: The object of the present invention is to provide an adhesive composition which can form a thinner adhesive layer, which has good storage stability and which can actualize high package reliability even when exposed to severe reflow conditions in a semiconductor package in which a semiconductor chip being reduced in a thickness is mounted, and an adhesive sheet having an adhesive layer comprising the adhesive composition. The adhesive composition of the present invention comprises an epoxy thermosetting resin (A), a thermosetting agent (B) and a thermosetting accelerating agent (C); the thermosetting accelerating agent (C) being soluble in methyl ethyl ketone and inactive as a thermosetting accelerating agent at room temperature.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: August 21, 2012
    Assignee: Lintec Corporation
    Inventors: Naoya Saiki, Hironori Shizuhata, Isao Ichikawa
  • Publication number: 20120196404
    Abstract: An adhesive composition for a semiconductor includes an acrylic polymer (A), an epoxy-based heat curable resin (B), a heat curing agent (C), a silane compound (D) having an organic functional group, molecular weight of 300 or more and an alkoxy equivalent of larger than 13 mmol/g, and a silane compound (E) having an organic functional group, molecular weight of 300 or less and an alkoxy equivalent of 13 mmol/g or less.
    Type: Application
    Filed: January 27, 2012
    Publication date: August 2, 2012
    Applicant: LINTEC CORPORATION
    Inventors: Isao Ichikawa, Masaaki Furudate, Mikihiro Kashio, Sou Miyata, Kaisuke Yanagimoto, Yuichi Kozone
  • Patent number: 7851335
    Abstract: The object of the present invention is to provide an adhesive composition that enables to produce conforming products with a high manufacturing yield and without breaking or chipping of the chips in the picking-up step and that enables to stably connect a wire without contaminating a wire pad part disposed at the circumference of a bonding surface during a wire bonding step that is performed after die bonding, even in the case of chips being reduced in a thickness. The adhesive composition of the present invention comprises: (A) an acrylic polymer; (B) an epoxy resin; (C) a thermosetting agent; and (D) a silicone compound having a specific side chain.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: December 14, 2010
    Assignee: Lintec Corporation
    Inventors: Isao Ichikawa, Naoya Saiki, Hironori Shizuhata
  • Patent number: 7842551
    Abstract: The adhesive composition according to the present invention is characterized by including an acrylic copolymer (A), an epoxy thermosetting resin (B) and a compound (C) having a functional group which can react with an epoxy group and having an unsaturated hydrocarbon group. According to the present invention, the high package reliability can be achieved even when exposed to severe reflow conditions in a package in which a thin semiconductor chip is mounted.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: November 30, 2010
    Assignee: Lintec Corporation
    Inventors: Naoya Saiki, Isao Ichikawa, Hironori Shizuhata, Osamu Yamazaki
  • Publication number: 20100133703
    Abstract: A semiconductor chip laminate comprises a plurality of semiconductor chips and an adhesive layer through which the plurality of semiconductor chips are laminated, wherein the adhesive layer is composed of an adhesive composition comprising an acrylic polymer (A); an epoxy resin (B); a thermal curing agent (C); and a certain organic phosphine compound (D) as a thermal curing accelerator, and the content of the organic phosphine compound (D) relative to 100 parts by weight in total of the epoxy resin (B) and the thermal curing agent (C) is 0.001 to 15 parts by weight.
    Type: Application
    Filed: November 25, 2009
    Publication date: June 3, 2010
    Applicant: LINTEC CORPORATION
    Inventors: Yasunori Karasawa, Isao Ichikawa
  • Patent number: 7674859
    Abstract: An adhesive sheet which can actualize a high package reliability wherein there is no separation at the adhesive interface and no package cracking, in a package in which a semiconductor chip being reduced in thickness is mounted under severe reflow conditions after exposure to a hot and humid environment. The adhesive sheet includes a base material and, formed thereon, an adhesive layer having an adhesive composition including an acrylic copolymer (A) containing 20 to 95% by weight of a structural unit derived from a benzyl (meth)acrylate, an epoxy thermosetting resin (B), and a thermosetting agent (C).
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: March 9, 2010
    Assignee: Lintec Corporation
    Inventors: Naoya Saiki, Isao Ichikawa, Hironori Shizuhata
  • Publication number: 20090246915
    Abstract: The object of the present invention is to provide an adhesive composition that enables to produce conforming products with a high manufacturing yield and without breaking or chipping of the chips in the picking-up step and that enables to stably connect a wire without contaminating a wire pad part disposed at the circumference of a bonding surface during a wire bonding step that is performed after die bonding, even in the case of chips being reduced in a thickness. The adhesive composition of the present invention comprises: (A) an acrylic polymer; (B) an epoxy resin; (C) a thermosetting agent; and (D) a silicone compound, wherein the silicone compound (D) has one kind of reactive organic functional group and a kinematic viscosity within a specific range.
    Type: Application
    Filed: March 31, 2009
    Publication date: October 1, 2009
    Applicant: LINTEC CORPORATION
    Inventors: Isao Ichikawa, Naoya Saiki, Hironori Shizuhata
  • Publication number: 20090246913
    Abstract: The object of the present invention is to provide an adhesive composition that enables to produce conforming products with a high manufacturing yield and without breaking or chipping of the chips in the picking-up step and that enables to stably connect a wire without contaminating a wire pad part disposed at the circumference of a bonding surface during a wire bonding step that is performed after die bonding, even in the case of chips being reduced in a thickness. The adhesive composition of the present invention comprises: (A) an acrylic polymer; (B) an epoxy resin; (C) a thermosetting agent; and (D) a silicone compound having a specific side chain.
    Type: Application
    Filed: March 31, 2009
    Publication date: October 1, 2009
    Applicant: LINTEC CORPORATION
    Inventors: Isao Ichikawa, Naoya Saiki, Hironori Shizuhata
  • Publication number: 20090170284
    Abstract: The object of the present invention is to provide an adhesive composition which can form a thinner adhesive layer, which has good storage stability and which can actualize high package reliability even when exposed to severe reflow conditions in a semiconductor package in which a semiconductor chip being reduced in a thickness is mounted, and an adhesive sheet having an adhesive layer comprising the adhesive composition. The adhesive composition of the present invention comprises an epoxy thermosetting resin (A), a thermosetting agent (B) and a thermosetting accelerating agent (C); the thermosetting accelerating agent (C) being soluble in methyl ethyl ketone and inactive as a thermosetting accelerating agent at room temperature.
    Type: Application
    Filed: December 23, 2008
    Publication date: July 2, 2009
    Applicant: LINTEC CORPORATION
    Inventors: Naoya Saiki, Hironori Shizuhata, Isao Ichikawa
  • Publication number: 20090004829
    Abstract: An adhesive sheet which can actualize a high package reliability wherein there is no separation at the adhesive interface and no package cracking, in a package in which a semiconductor chip being reduced in thickness is mounted under severe reflow conditions after exposure to a hot and humid environment. The adhesive sheet includes a base material and, formed thereon, an adhesive layer having an adhesive composition including an acrylic copolymer (A) containing 20 to 95% by weight of a structural unit derived from a benzyl(meth)acrylate, an epoxy thermosetting resin (B), and a thermosetting agent (C).
    Type: Application
    Filed: June 24, 2008
    Publication date: January 1, 2009
    Applicant: LINTEC CORPORATION
    Inventors: Naoya Saiki, Isao Ichikawa, Hironori Shizuhata
  • Publication number: 20080242058
    Abstract: The adhesive composition according to the present invention is characterized by including an acrylic polymer, an epoxy resin having an epoxy equivalent of 180 g/eq or less and a thermosetting agent. According to the present invention, provided are an adhesive composition which can achieve a high package reliability in a package in which a semiconductor chip being reduced in a thickness is mounted even when exposed to severe reflow conditions, an adhesive sheet having an adhesive layer comprising the above adhesive composition and a production process for a semiconductor device using the above adhesive sheet.
    Type: Application
    Filed: March 26, 2008
    Publication date: October 2, 2008
    Applicant: LINTEC CORPORATION
    Inventors: Isao Ichikawa, Naoya Saiki, Hironori Shizuhata