Patents by Inventor Hirotaka Kitagawa

Hirotaka Kitagawa 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: 10175576
    Abstract: Provided is a curable composition for photo imprints excellent in the mold releasability and the ink jettability. The curable composition for photo imprints, comprising: a polymerizable compound (A); a photo-polymerization initiator (B); and a mold releasing agent (C), the mold releasing agent (C) being represented by the formula (I) below. Rf represents a C1-8 fluorine-containing alkyl group having two or more fluorine atoms; m represents 1 or 2; L represents a single bond or divalent linking group; n represents 1 or 2; X represents a single bond, oxygen atom, sulfur atom, or nitrogen atom; R1 represents a C1-8 substituent being free from a polymerizable group; R2 represents a hydrogen atom, C1-8 substituent, or divalent linking group; p represents 1 or 2, q represents 0 or 1, and r represents 1 or 2; R1 and R2 may combine with each other to form a ring.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: January 8, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Hirotaka Kitagawa, Yuichiro Goto, Yuichiro Enomoto
  • Publication number: 20180120698
    Abstract: Provided are a photocurable composition capable of suppressing both deformation (change in line width roughness (?LWR)) of a pattern after etching and breakage of a pattern after etching, a pattern forming method, and a method for manufacturing a device.
    Type: Application
    Filed: December 22, 2017
    Publication date: May 3, 2018
    Applicant: FUJIFILM Corporation
    Inventor: Hirotaka KITAGAWA
  • Publication number: 20180037688
    Abstract: Provided are a curable composition for imprints which is capable of both improving releasability and suppressing occurrence of waviness during etching, as well as a cured product, a pattern forming method, a lithography method, a pattern, and a lithography mask, each of which uses the curable composition for imprints. The curable composition for imprints includes a monofunctional polymerizable compound, a polyfunctional polymerizable compound containing at least one of an alicyclic structure or an aromatic ring structure and having a viscosity at 25° C. of 150 mPa·s or less, and a photopolymerization initiator, in which the monofunctional polymerizable compound is contained in an amount of 5 to 30 mass % with respect to the total polymerizable compound in the curable composition for imprints, and the cured film of the curable composition for imprints has a modulus of elasticity of 3.5 GPa or less and a glass transition temperature of 90° C. or higher.
    Type: Application
    Filed: September 13, 2017
    Publication date: February 8, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Yuichiro GOTO, Kazuhiro MARUMO, Hirotaka KITAGAWA, Tadashi OOMATSU
  • Patent number: 9868846
    Abstract: Disclosed is a to provide a curable composition for imprints capable of keeping a good patternability and of producing less defects even after repetitive pattern transfer. The curable composition for imprints comprising: a polymerizable compound (A); a photo-polymerization initiator (B); and a non-polymerizable compound (C) having a polyalkylene glycol structure having at least one terminal hydroxy group, or at least one etherified terminal hydroxy group, and containing substantially no fluorine atom and no silicon atom.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: January 16, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Kunihiko Kodama, Yuichiro Enomoto, Kazuyuki Usuki, Tadashi Omatsu, Hirotaka Kitagawa
  • Patent number: 9862847
    Abstract: The present invention provides a discharge method which makes it possible to appropriately perform discharge even when a head for discharging microdroplets having a size of equal to or less than 6 pL that is necessary for controlling a residual film (forming a thin film and achieving uniformity) is used, and makes it possible to obtain an excellent pattern having excellent release properties. The discharge method is an inkjet discharge method including discharging a photocurable composition in the form of liquid droplets having a size of equal to or less than 6 pL, in which the composition satisfies the following (a) to (c), (a) containing a fluorine-containing material in a proportion of equal to or less than 4% by mass of the composition; (b) having a surface tension of 25 mN/m to 35 mN/m; and (c) containing a solvent having a boiling point of equal to or less than 200° C. in an amount of 5% by mass of the composition.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: January 9, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Yuichiro Goto, Tadashi Oomatsu, Hirotaka Kitagawa, Yuichiro Enomoto, Kenichi Kodama
  • Publication number: 20180002561
    Abstract: Disclosed herein are a resin composition for underlayer film formation which is capable of forming an underlayer film having good adhesiveness to a base material and good surface state, an imprint forming kit, a laminate, a pattern forming method, and a method for producing a device. Provided is a resin composition for underlayer film formation, including a resin, a nucleophilic catalyst, and a solvent, in which the content of the nucleophilic catalyst is 0.01 to 0.3 mass % with respect to the solid content of the resin composition for underlayer film formation.
    Type: Application
    Filed: September 12, 2017
    Publication date: January 4, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Tadashi OOMATSU, Hirotaka KITAGAWA, Yuichiro GOTO
  • Patent number: 9796803
    Abstract: An under layer film having excellent surface planarity is provided. In one aspect, the under layer film-forming composition for imprints includes a (meth)acrylic resin (A) containing an ethylenic unsaturated group (P) and a nonionic hydrophilic group (Q), and having a weight average molecular weight of 1,000 or larger; and a solvent (B), the resin (A) having an acid value of smaller than 1.0 mmol/g. In another aspect, the under layer film-forming composition for imprints includes a (meth)acrylic resin (A2) containing an ethylenic unsaturated group (P), and containing, as a nonionic hydrophilic group (Q), a cyclic substituent (Q2) having a carbonyl group in the cyclic structure thereof, with a weight average molecular weight of 1,000 or larger; and a solvent (B).
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: October 24, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Hirotaka Kitagawa, Akiko Hattori, Yuichiro Enomoto
  • Publication number: 20170285468
    Abstract: Provided are a photocurable composition for imprints, having good releasability and temporal stability of the releasability, a pattern forming method, and a method for manufacturing a device. This photocurable composition for imprints includes a monofunctional chained aliphatic (meth)acrylate (A1) not containing a fluorine atom, a bifunctional or higher polyfunctional (meth)acrylate (A2) not containing a fluorine atom, a monofunctional (meth)acrylate (B) containing a fluorine atom, and a photopolymerization initiator (C), in which the monofunctional chained aliphatic (meth)acrylate (A1) not containing a fluorine atom has a boiling point of 100° C. to 200° C. at a pressure of 0.67 kPa, and the monofunctional (meth)acrylate (B) containing a fluorine atom has a boiling point of 100° C. to 200° C. at a pressure of 0.67 kPa.
    Type: Application
    Filed: June 14, 2017
    Publication date: October 5, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Hirotaka KITAGAWA, Yuichiro GOTO
  • Publication number: 20170190820
    Abstract: Provided are a curable composition having excellent releasability and ink jet discharge accuracy, a pattern forming method, a pattern, and a method for manufacturing a device. The curable composition includes a polymerizable compound and a photopolymerization initiator, in which neopentyl glycol diacrylate accounts for 10% by mass or more of the polymerizable compound, and the total content of a compound represented by the following Formula (I) and a compound represented by the following Formula (II) is 5% by mass or less with respect to the content of neopentyl glycol diacrylate.
    Type: Application
    Filed: March 21, 2017
    Publication date: July 6, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Hirotaka KITAGAWA, Yuichiro GOTO
  • Publication number: 20170158905
    Abstract: Provided are a resin composition for underlayer film formation with which a variation hardly occurs in the line width distribution after processing due to a small thickness of a residual film after mold pressing, a layered product, a method for forming a pattern, an imprint forming kit, and a process for producing a device. Disclosed is a resin composition for underlayer film formation which is used to form an underlayer film by being applied onto a base material, including a first resin having a radical reactive group in the side chain, a second resin containing at least one selected from a fluorine atom and a silicon atom, and a solvent. The second resin is preferably a resin containing a fluorine atom. The radical reactive group of the first resin is preferably a (meth)acryloyl group.
    Type: Application
    Filed: February 24, 2017
    Publication date: June 8, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Tadashi OOMATSU, Hirotaka KITAGAWA, Yuichiro GOTO
  • Publication number: 20170146907
    Abstract: Provided are a resin composition for underlayer film formation with which a variation hardly occurs in the line width distribution after processing due to a small thickness of a residual film after mold pressing, a layered product, a method for forming a pattern, an imprint forming kit, and a process for producing a device. A resin composition for underlayer film formation includes a resin having a group represented by General Formula (A) and at least one group selected from a group represented by General Formula (B), an oxiranyl group and an oxetanyl group, a nonionic surfactant and a solvent.
    Type: Application
    Filed: February 3, 2017
    Publication date: May 25, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Tadashi OOMATSU, Hirotaka KITAGAWA, Yuichiro GOTO
  • Publication number: 20170088743
    Abstract: A resin composition for underlayer film formation capable of forming an underlayer film having good adhesiveness and excellent surface flatness, a layered product, a method for forming a pattern and a process for producing a device are provided. The resin composition for underlayer film formation includes a resin having a group represented by General Formula (A) and a group represented by General Formula (B), and a solvent. Ra1 represents a hydrogen atom or a methyl group, Rb1 and Rb2 each independently represents an unsubstituted linear or branched alkyl group having 1 to 20 carbon atoms or an unsubstituted cycloalkyl group having 3 to 20 carbon atoms, Rb3 represents an unsubstituted linear or branched alkyl group having 2 to 20 carbon atoms or an unsubstituted cycloalkyl group having 3 to 20 carbon atoms, and Rb2 and Rb3 may be bonded to each other to form a ring.
    Type: Application
    Filed: December 14, 2016
    Publication date: March 30, 2017
    Applicant: FUJIFILM Corporation
    Inventors: Hirotaka KITAGAWA, Tadashi OOMATSU
  • Patent number: 9507263
    Abstract: Provided is the pattern formability and line edge roughness of the resultant substrate. An underlay film composition for imprints comprising a compound (A) and a solvent (B), the compound (A) having at least either one of a group (Ka) capable of covalently bonding and/or interacting with a substrate, and, a group (Kb) capable of covalently bonding and/or interacting with a curable composition for imprints, an Ohnishi parameter (Z) calculated from (equation 1) of 3.8 or larger, and a molecular weight of 400 or larger: the Ohnishi parameter=(total number of atoms)/(number of carbon atoms?number of oxygen atoms).
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: November 29, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Kunihiko Kodama, Shinji Tarutani, Yuichiro Enomoto, Tadashi Oomatsu, Takayuki Ito, Hirotaka Kitagawa, Akiko Hattori
  • Publication number: 20160211143
    Abstract: A curable composition for optical imprinting which is excellent in ink jet adequacy and releasability, a pattern forming method, a fine pattern, and a method for manufacturing a semiconductor device are provided. The curable composition for optical imprinting contains a polymerizable compound (A), a photopolymerization initiator (B), and a compound (C) expressed by General Formula (I); in General Formula (I), A represents a dihydric to hexahydric polyhydric alcohol residue. p represents 0 to 2, q represents 1 to 6, p+q represents an integer of 2 to 6, each of m and n independently represents 0 to 20. r expressed by Formula (1) is 6 to 20. Each R independently represents an alkyl group having 1 to 10 carbon atoms, an aryl group, or an acyl group.
    Type: Application
    Filed: March 29, 2016
    Publication date: July 21, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Hirotaka KITAGAWA, Yuichiro GOTO
  • Patent number: 9376581
    Abstract: To provide a photo-curable composition for imprints which can ensure high ratio of mold filling and low defect density during mold releasing, and can provide a resist material with high etching durability. A photo-curable composition for imprints comprising a monofunctional monomer, a polyfunctional monomer and a photo-polymerization initiator, having a viscosity at 25° C. of 15 mPa·s or smaller, an Ohnishi parameter of 3.0 or smaller, and a crosslink density calculated by (Formula 1) of 0.6 mmol/cm3 or larger; Crosslink density={?(Ratio of mixing of polyfunctional monomer (parts by mass)*Number of functional groups of polyfunctional monomer/Molecular weight of polyfunctional monomer)}/Specific gravity.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: June 28, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Hirotaka Kitagawa, Masafumi Yoshida
  • Publication number: 20160122563
    Abstract: The present invention provides a discharge method which makes it possible to appropriately perform discharge even when a head for discharging microdroplets having a size of equal to or less than 6 pL that is necessary for controlling a residual film (forming a thin film and achieving uniformity) is used, and makes it possible to obtain an excellent pattern having excellent release properties. The discharge method is an inkjet discharge method including discharging a photocurable composition in the form of liquid droplets having a size of equal to or less than 6 pL, in which the composition satisfies the following (a) to (c), (a) containing a fluorine-containing material in a proportion of equal to or less than 4% by mass of the composition; (b) having a surface tension of 25 mN/m to 35 mN/m; and (c) containing a solvent having a boiling point of equal to or less than 200° C. in an amount of 5% by mass of the composition.
    Type: Application
    Filed: December 23, 2015
    Publication date: May 5, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Yuichiro Goto, Tadashi Oomatsu, Hirotaka Kitagawa, Yuichiro Enomoto, Kenichi Kodama
  • Patent number: 9263289
    Abstract: Provided is an adhesion-promoting composition between a curable composition for imprints and a substrate, which excellent in adhesiveness and can control pattern failure. An adhesion-promoting composition used between a curable composition for imprints and a substrate, which comprises a compound having a molecular weight of 500 or larger and having a reactive group, and has a content of a compound, with a molecular weight of 200 or smaller, of more than 1% by mass and not more than 10% by mass of a total solid content.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: February 16, 2016
    Assignee: FUJIFILM Corporation
    Inventors: Akiko Hattori, Hirotaka Kitagawa, Yuichiro Enomoto
  • Publication number: 20160009945
    Abstract: Provided is a composition capable of producing an underlying film which demonstrates a good adhesiveness between a substrate and a layer to be imprinted, showing a good in-plane uniformity of the thickness, and a small defect density. The composition includes a polymerizable compound, a first solvent, and a second solvent, the first solvent having a boiling point at 1 atm of 160° C. or higher, the second solvent having a boiling point at 1 atm of lower than 160° C., and the content of the polymerizable compound in the composition being less than 1% by mass.
    Type: Application
    Filed: September 25, 2015
    Publication date: January 14, 2016
    Applicant: FUJIFILM CORPORATION
    Inventors: Yuichiro ENOMOTO, Hirotaka KITAGAWA, Tadashi OOMATSU, Yuichiro GOTO
  • Publication number: 20160009946
    Abstract: Provided is a composition for forming underlying layer for imprints, which is excellent in surface flatness and adhesiveness. The composition for forming underlying layer for imprints comprises (A) a resin having an ethylenic unsaturated group (P), and a cyclic ether group (T) selected from oxiranyl group and oxetanyl group, and having a weight-average molecular weight of 1000 or larger; and, (B) a solvent.
    Type: Application
    Filed: September 22, 2015
    Publication date: January 14, 2016
    Applicant: FUJIFILM CORPORATION
    Inventors: Hirotaka KITAGAWA, Yuichiro ENOMOTO
  • Publication number: 20150228498
    Abstract: To obtain a good pattern having a good profile of etched pattern. A method for manufacturing an adhesive film for imprints, the method comprising applying an adhesive composition for imprints in a base, and then rinsing the adhesive composition for imprints.
    Type: Application
    Filed: April 27, 2015
    Publication date: August 13, 2015
    Applicant: FUJIFILM CORPORATION
    Inventors: Akiko HATTORI, Tadashi OOMATSU, Hirotaka KITAGAWA, Yuichiro ENOMOTO