Patents by Inventor Keishi Ono

Keishi Ono 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: 20240111211
    Abstract: The present disclosure relates to a photosensitive resin film containing a binder polymer, a photopolymerizable compound, a photopolymerization initiator, and a polymerization inhibitor and having a thickness of 35 to 300 ?m.
    Type: Application
    Filed: October 16, 2019
    Publication date: April 4, 2024
    Inventors: Tatsuhiko ARAI, Fuuka HIRAYAMA, Keishi ONO, Mao NARITA, Takahiro FUKAYA
  • Publication number: 20240015889
    Abstract: A method for producing a wiring board, including: a step of pretreating the surface of a metal layer exposed into an opening by bringing the surface into contact with a pretreatment liquid at a predetermined pretreatment temperature; and a step of forming a copper plating layer on the metal layer by electrolytic plating. The resist layer and the pretreatment liquid are selected such that a mass change rate of the resist layer when the resist layer before being exposed and developed is immersed in the pretreatment liquid is ?2.0% by mass or more. The mass change rate is a value calculated by Expression: Mass change rate (% by mass)={(W1?W0)/W0}×100. W1 is the mass of the resist layer after a laminated body including a resist layer 3 and a copper foil is immersed in the pretreatment liquid at the pretreatment temperature for 30 minutes.
    Type: Application
    Filed: September 9, 2021
    Publication date: January 11, 2024
    Inventors: Kei TOGASAKI, Kenichi IWASHITA, Keishi ONO, Mao NARITA, Kazuyuki MITSUKURA, Masaya TOBA
  • Publication number: 20230161248
    Abstract: A photosensitive film containing (A) a binder polymer, (B) a photopolymerizable compound, (C) a photopolymerization initiator, and (D) a pyrazoline compound, in which a thickness of the photosensitive film is 20 ?m or less. A photosensitive element 1 including a support 2, and a photosensitive resin layer 3 disposed on the support 2, in which the photosensitive resin layer 3 is the photosensitive film. A method for producing a laminate, the method including a disposing step of disposing a photosensitive resin layer on a base material by using the above-described photosensitive film or the photosensitive element 1, a step of photo-curing a part of the photosensitive resin layer, and a step of removing at least a part of an uncured area of the photosensitive resin layer to form a cured product pattern.
    Type: Application
    Filed: March 7, 2022
    Publication date: May 25, 2023
    Inventors: Mao NARITA, Keishi ONO, Shiho TANAKA, Akiko TAKEDA, Yusaku WATANABE
  • Publication number: 20230145264
    Abstract: A photosensitive resin composition containing a binder polymer, a photopolymerizable compound, a photopolymerization initiator, and an anthracene-based sensitizer, in which the binder polymer contains a polymer (a) having a hydroxyalkyl (meth)acrylate unit and a styrene or styrene derivative unit and having a content of the styrene or styrene derivative unit of 40% by mass or more.
    Type: Application
    Filed: March 16, 2021
    Publication date: May 11, 2023
    Inventors: Keishi ONO, Seiji SUNOHARA, Tetsuro YAMASHITA, Yuya HIRAYAMA
  • Patent number: 11608455
    Abstract: Disclosed is a method for manufacturing a semiconductor device which includes: a semiconductor chip; a substrate and/or another semiconductor chip; and an adhesive layer interposed therebetween. This method comprises the steps of: heating and pressuring a laminate having: the semiconductor chip; the substrate; the another semiconductor chip or a semiconductor wafer; and the adhesive layer by interposing the laminate with pressing members for temporary press-bonding to thereby temporarily press-bond the substrate and the another semiconductor chip or the semiconductor wafer to the semiconductor chip; and heating and pressuring the laminate by interposing the laminate with pressing members for main press-bonding, which are separately prepared from the pressing members for temporary press-bonding, to thereby electrically connect a connection portion of the semiconductor chip and a connection portion of the substrate or the another semiconductor chip.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: March 21, 2023
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Kazutaka Honda, Koichi Chabana, Keishi Ono, Akira Nagai
  • Publication number: 20220267484
    Abstract: A photosensitive resin composition containing: a component (A) which is a high molecular weight compound having a photopolymerizable functional group and a carbon-nitrogen bond; a component (B) which is a low molecular weight compound having a photopolymerizable functional group; a component (C) which is a photopolymerization initiator; and a component (D) which is a triazole-based compound.
    Type: Application
    Filed: July 10, 2019
    Publication date: August 25, 2022
    Inventors: Mao NARITA, Keishi ONO, Tatsuhiko ARAI, Naoto KURODA
  • Patent number: 10725379
    Abstract: A resin composition including the following components (a) and (b). (a) A polyimide precursor having a structural unit represented by the following general formula (1); and (b) a compound represented by the following general formula (2): wherein in the formula R1 is a tetravalent organic group, R2 is a divalent organic group and R3 and R4 are independently a hydrogen atom, an alkyl group, a cycloalkyl group or a monovalent organic group having a carbon-carbon unsaturated double bond.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: July 28, 2020
    Assignee: Hitachi Chemical DuPont MicroSystems, Ltd.
    Inventors: Keishi Ono, Tetsuya Enomoto, Masayuki Ohe, Keiko Suzuki, Kazuya Soejima, Etsuharu Suzuki
  • Patent number: 10669454
    Abstract: Disclosed is a method for manufacturing a semiconductor device which includes: a semiconductor chip; a substrate and/or another semiconductor chip; and an adhesive layer interposed therebetween. This method comprises the steps of: heating and pressuring a laminate having: the semiconductor chip; the substrate; the another semiconductor chip or a semiconductor wafer; and the adhesive layer by interposing the laminate with pressing members for temporary press-bonding to thereby temporarily press-bond the substrate and the another semiconductor chip or the semiconductor wafer to the semiconductor chip; and heating and pressuring the laminate by interposing the laminate with pressing members for main press-bonding, which are separately prepared from the pressing members for temporary press-bonding, to thereby electrically connect a connection portion of the semiconductor chip and a connection portion of the substrate or the another semiconductor chip.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: June 2, 2020
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Kazutaka Honda, Koichi Chabana, Keishi Ono, Akira Nagai
  • Publication number: 20200095481
    Abstract: Disclosed is a method for manufacturing a semiconductor device which includes: a semiconductor chip; a substrate and/or another semiconductor chip; and an adhesive layer interposed therebetween. This method comprises the steps of: heating and pressuring a laminate having: the semiconductor chip; the substrate; the another semiconductor chip or a semiconductor wafer; and the adhesive layer by interposing the laminate with pressing members for temporary press-bonding to thereby temporarily press-bond the substrate and the another semiconductor chip or the semiconductor wafer to the semiconductor chip; and heating and pressuring the laminate by interposing the laminate with pressing members for main press-bonding, which are separately prepared from the pressing members for temporary press-bonding, to thereby electrically connect a connection portion of the semiconductor chip and a connection portion of the substrate or the another semiconductor chip.
    Type: Application
    Filed: November 12, 2019
    Publication date: March 26, 2020
    Inventors: Kazutaka HONDA, Koichi CHABANA, Keishi ONO, Akira NAGAI
  • Patent number: 10224311
    Abstract: A semiconductor adhesive used for sealing connection portions of a semiconductor device, wherein: in the semiconductor device, the connection portion of a semiconductor chip and the connection portion of a wiring circuit substrate are electrically connected to each other or the connection portions of a plurality of semiconductor chips are electrically connected to each other; the semiconductor adhesive comprises a (meth)acrylic compound and a curing agent; and when the semiconductor adhesive is kept at 200° C. for 5 seconds, a curing reaction rate thereof is 80% or more.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: March 5, 2019
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Kazutaka Honda, Akira Nagai, Makoto Satou, Koichi Chabana, Keishi Ono
  • Publication number: 20180312731
    Abstract: Disclosed is a method for manufacturing a semiconductor device which includes: a semiconductor chip; a substrate and/or another semiconductor chip; and an adhesive layer interposed therebetween. This method comprises the steps of: heating and pressuring a laminate having: the semiconductor chip; the substrate; the another semiconductor chip or a semiconductor wafer; and the adhesive layer by interposing the laminate with pressing members for temporary press-bonding to thereby temporarily press-bond the substrate and the another semiconductor chip or the semiconductor wafer to the semiconductor chip; and heating and pressuring the laminate by interposing the laminate with pressing members for main press-bonding, which are separately prepared from the pressing members for temporary press-bonding, to thereby electrically connect a connection portion of the semiconductor chip and a connection portion of the substrate or the another semiconductor chip.
    Type: Application
    Filed: October 26, 2016
    Publication date: November 1, 2018
    Inventors: Kazutaka HONDA, Koichi CHABANA, Keishi ONO, Akira NAGAI
  • Publication number: 20170345797
    Abstract: A semiconductor adhesive used for sealing connection portions of a semiconductor device, wherein: in the semiconductor device, the connection portion of a semiconductor chip and the connection portion of a wiring circuit substrate are electrically connected to each other or the connection portions of a plurality of semiconductor chips are electrically connected to each other; the semiconductor adhesive comprises a (meth)acrylic compound and a curing agent; and when the semiconductor adhesive is kept at 200° C. for 5 seconds, a curing reaction rate thereof is 80% or more.
    Type: Application
    Filed: December 3, 2015
    Publication date: November 30, 2017
    Inventors: Kazutaka HONDA, Akira NAGAI, Makoto SATOU, Koichi CHABANA, Keishi ONO
  • Patent number: 9751984
    Abstract: A polyimide precursor including a structural unit represented by the following general formula (1) in a ratio of 50 mol % or more based on the total structural units. In the general formula (1), A is a tetravalent organic group represented by the following general formula (2a), a tetravalent organic group represented by the following general formula (2b), or a tetravalent organic group represented by the following general formula (2c), and B is a divalent organic group represented by the following general formula (3).
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: September 5, 2017
    Assignee: HITACHI CHEMICAL DUPONT MICROSYSTEMS, LTD.
    Inventors: Tetsuya Enomoto, Keishi Ono, Masayuki Ohe, Keiko Suzuki, Kazuya Soejima, Etsuharu Suzuki
  • Publication number: 20150353685
    Abstract: A polyimide precursor including a structural unit represented by the following general formula (1) in a ratio of 50 mol % or more based on the total structural units. In the general formula (1), A is a tetravalent organic group represented by the following general formula (2a), a tetravalent organic group represented by the following general formula (2b), or a tetravalent organic group represented by the following general formula (2c), and B is a divalent organic group represented by the following general formula (3).
    Type: Application
    Filed: December 19, 2013
    Publication date: December 10, 2015
    Applicant: HITACHI CHEMICAL DUPONT MICROSYSTEMS, LTD.
    Inventors: Tetsuya Enomoto, Keishi Ono, Masayuki Ohe, Keiko Suzuki, Kazuya Soejima, Etsuharu Suzuki
  • Publication number: 20150337116
    Abstract: A resin composition including the following components (a) and (b). (a) A polyimide precursor having a structural unit represented by the following general formula (1); and (b) a compound represented by the following general formula (2): wherein in the formula R1 is a tetravalent organic group, R2 is a divalent organic group and R3 and R4 are independently a hydrogen atom, an alkyl group, a cycloalkyl group or a monovalent organic group having a carbon-carbon unsaturated double bond.
    Type: Application
    Filed: December 13, 2013
    Publication date: November 26, 2015
    Applicant: Hitachi Chemical DuPont MicroSystems, Ltd.
    Inventors: Keishi ONO, Tetsuya ENOMOTO, Masayuki OHE, Keiko SUZUKI, Kazuya SOEJIMA, Etsuharu SUZUKI
  • Patent number: 9134608
    Abstract: A positive photosensitive resin composition including: (a) a resin capable of being dissolved in an aqueous alkaline solution; (b) a compound having two or more oxetanyl groups; (c) a diazonaphthoquinone compound; and (d) a solvent.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: September 15, 2015
    Assignee: HITACHI CHEMICAL DUPONT MICROSYSTEMS, LTD.
    Inventors: Masashi Kotani, Masayuki Ooe, Taku Konno, Tomonori Minegishi, Keishi Ono
  • Publication number: 20120288798
    Abstract: A positive photosensitive resin composition including: (a) a resin capable of being dissolved in an aqueous alkaline solution; (b) a compound having two or more oxetanyl groups; (c) a diazonaphthoquinone compound; and (d) a solvent.
    Type: Application
    Filed: January 18, 2011
    Publication date: November 15, 2012
    Applicant: HITACHI CHEMICAL DUPONT MICROSYSTEMS, LTD.
    Inventors: Masashi Kotani, Masayuki Ooe, Taku Konno, Tomonori Minegishi, Keishi Ono