Patents by Inventor Miwa Kozawa

Miwa Kozawa 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: 20160381795
    Abstract: An electronic device includes: a substrate; a Cu-containing wiring layer formed over the substrate; a barrier metal layer that covers a surface of the Cu-containing wiring layer and suppresses diffusion of Cu; and a coating insulating layer that covers the barrier metal layer, wherein the barrier metal layer has a void that does not reach the Cu-containing wiring layer, and the void is filled with the coating insulating layer.
    Type: Application
    Filed: May 23, 2016
    Publication date: December 29, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Junya Ikeda, Miwa Kozawa, Tsuyoshi Kanki, Yoshihiro Nakata
  • Patent number: 8980535
    Abstract: To provide a resist matter improving material containing C4-11 linear alkanediol, and water.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: March 17, 2015
    Assignee: Fujitsu Limited
    Inventors: Miwa Kozawa, Koji Nozaki
  • Patent number: 8945822
    Abstract: The present invention provides a resist pattern thickening material, which can utilize ArF excimer laser light; which, when applied over a resist pattern to be thickened, e.g., in form of lines and spaces pattern, can thicken the resist pattern to be thickened regardless of the size of the resist pattern to be thickened; and which is suited for forming a fine space pattern or the like, exceeding exposure limits. The present invention also provides a process for forming a resist pattern and a process for manufacturing a semiconductor device, wherein the resist pattern thickening material of the present invention is suitably utilized.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 3, 2015
    Assignee: Fujitsu Limited
    Inventors: Koji Nozaki, Miwa Kozawa
  • Patent number: 8945816
    Abstract: A method for producing a semiconductor device includes forming a resist pattern by coating a resist pattern thickening material to cover the surface of the resist pattern, baking the resist pattern thickening material, and developing and separating the resist pattern thickening material, wherein at least one of the coating, the baking and the developing is carried out plural times.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: February 3, 2015
    Assignee: Fujitsu Limited
    Inventors: Miwa Kozawa, Koji Nozaki
  • Patent number: 8906598
    Abstract: To provide a pattern forming method, which contains: forming a first resist pattern on a processing surface using a first resist composition; forming a coating layer using a coating material so as to cover a surface of the first resist pattern; applying a second resist composition over the first resist pattern above which the coating layer has been formed so as not to dissolve the first resist pattern with the second resist composition to thereby form a second resist film; and selectively exposing the second resist film to exposure light and developing the second resist film to thereby expose the first resist pattern to the air, as well as forming a second resist pattern in an area of the processing surface where the first resist pattern has not been formed.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: December 9, 2014
    Assignee: Fujitsu Limited
    Inventors: Miwa Kozawa, Koji Nozaki
  • Patent number: 8795949
    Abstract: To provide a resist pattern improving material, containing: a compound represented by the following general formula (1), or a compound represented by the following general formula (2), or both thereof; and water: where R1 and R2 are each independently a hydrogen atom, or a C1-C3 alkyl group; m is an integer of 1 to 3; and n is an integer of 3 to 30, where p is an integer of 8 to 20; q is an integer of 3 to 30; and r is an integer of 1 to 8.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: August 5, 2014
    Assignee: Fujitsu Limited
    Inventors: Miwa Kozawa, Koji Nozaki
  • Patent number: 8748077
    Abstract: To provide a resist pattern improving material, containing: water; and benzalkonium chloride represented by the following general formula (1): where n is an integer of 8 to 18.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: June 10, 2014
    Assignee: Fujitsu Limited
    Inventors: Koji Nozaki, Miwa Kozawa
  • Publication number: 20140057437
    Abstract: To provide a rinsing agent for lithography, which contains C6-C8 straight-chain alkanediol, and water.
    Type: Application
    Filed: June 27, 2013
    Publication date: February 27, 2014
    Inventors: Miwa KOZAWA, Junichi KON, Koji NOZAKI
  • Patent number: 8652751
    Abstract: A resist composition, which contains: a silicon compound having at least an alkyl-soluble group which may be substituted with a substituent; and a resin having an alkali-soluble group which may be substituted with an acid labile group, wherein the resist composition is designed to be subjected to immersion lithography.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: February 18, 2014
    Assignee: Fujitsu Limited
    Inventors: Miwa Kozawa, Koji Nozaki
  • Patent number: 8476346
    Abstract: A resist pattern thickening material containing a resin, a cyclic compound expressed by the general formula 1, at least one of compounds expressed by the general formulae 2 to 3, respectively, and water:
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: July 2, 2013
    Assignee: Fujitsu Limited
    Inventors: Miwa Kozawa, Koji Nozaki
  • Patent number: 8420288
    Abstract: The present invention provides a resist pattern thickening material, which can utilize ArF excimer laser light; which, when applied over a resist pattern to be thickened, e.g., in form of lines and spaces pattern, can thicken the resist pattern to be thickened regardless of the size of the resist pattern to be thickened; and which is suited for forming a fine space pattern or the like, exceeding exposure limits. The present invention also provides a process for forming a resist pattern and a process for manufacturing a semiconductor device, wherein the resist pattern thickening material of the present invention is suitably utilized.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: April 16, 2013
    Assignee: Fujitsu Limited
    Inventors: Koji Nozaki, Miwa Kozawa
  • Patent number: 8349542
    Abstract: A resist pattern thickening material has resin, a crosslinking agent and a compound having a cyclic structure, or resin having a cyclic structure at a part. A resist pattern has a surface layer on a resist pattern to be thickened with etching rate (nm/s) ratio of the resist pattern to be thickened the surface layer of 1.1 or more, under the same condition, or a surface layer to a resist pattern to be thickened. A process for forming a resist pattern includes applying the thickening material after forming a resist pattern to be thickened on its surface. A semiconductor device has a pattern formed by the resist pattern. A process for manufacturing the semiconductor device has applying, after forming a resist pattern to be thickened, the thickening material to the surface of the resist pattern to be thickened, and patterning the underlying layer by etching, the pattern as a mask.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: January 8, 2013
    Assignee: Fujitsu Limited
    Inventors: Miwa Kozawa, Koji Nozaki, Takahisa Namiki, Junichi Kon, Ei Yano
  • Patent number: 8338080
    Abstract: To thicken a resist pattern to be thickened to thereby easily form a fine pattern exceeding an exposure limit of optical source of conventional exposure devices, a process forms a resist pattern to be thickened by patterning a resist on an underlying object; applying a surfactant composition containing at least a surfactant on the resist pattern to be thickened; and applying a resist pattern thickening material containing at least a resin and a surfactant thereonto. The resist pattern to be thickened is thus thickened to form a fine pattern having a narrowed pitch.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: December 25, 2012
    Assignee: Fujitsu Limited
    Inventors: Miwa Kozawa, Koji Nozaki
  • Patent number: 8334091
    Abstract: To provide a method for easily forming microscopic patterns exceeding the limit of exposure in the patterning technique utilizing the photolithography method in the vacuum deep ultraviolet ray region, a resist pattern swelling material is comprised by mixing a water-soluble or alkali-soluble composition comprising a resin and a cross linking agent and any one of a non-ionic interfacial active agent and an organic solvent selected from a group of the alcohol based, chain or cyclic ester based, ketone based, chain or cyclic ether based organic solvents.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: December 18, 2012
    Assignee: Fujitsu Limited
    Inventors: Koji Nozaki, Miwa Kozawa, Takahisa Namiki, Junichi Kon, Ei Yano
  • Publication number: 20120228747
    Abstract: To provide a resist pattern improving material, containing: water; and benzalkonium chloride represented by the following general formula (1): where n is an integer of 8 to 18.
    Type: Application
    Filed: January 26, 2012
    Publication date: September 13, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Koji NOZAKI, Miwa Kozawa
  • Publication number: 20120156879
    Abstract: To provide a resist pattern improving material, containing: a compound represented by the following general formula (1), or a compound represented by the following general formula (2), or both thereof; and water: where R1 and R2 are each independently a hydrogen atom, or a C1-C3 alkyl group; m is an integer of 1 to 3; and n is an integer of 3 to 30, where p is an integer of 8 to 20; q is an integer of 3 to 30; and r is an integer of 1 to 8.
    Type: Application
    Filed: September 23, 2011
    Publication date: June 21, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Miwa KOZAWA, Koji Nozaki
  • Patent number: 8198014
    Abstract: To provide a material including: a silicon-containing polymer having at least an alkali-soluble group and is represented by the following general formula (1); and an organic solvent capable of dissolving the silicon-containing polymer. (SiO4/2)a(R1tSiO(4-t)/2)b(O1/2R2)c??general formula (1) where R1 represents at least one of a monovalent organic group, hydrogen atom and hydroxyl group, R2 represents at least one of a monovalent organic group and hydrogen atom (where R1 and R2 each may appear twice or more, and at least one of R1 and R2 contains an alkali-soluble group), “t” represents an integer of 1 to 3, “a,” “b,” and “c” represent the relative proportions of their units (where a?0, b?0 and c?0, and “a,” “b,” and “c” are not 0 at the same time), and (R1tSiO(4-t)/2)b may appear twice or more.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: June 12, 2012
    Assignee: Fujitsu Limited
    Inventors: Miwa Kozawa, Koji Nozaki, Takahisa Namiki
  • Patent number: 8198009
    Abstract: The object of the present invention is to provide a process for forming a resist pattern that is capable to utilize excimer laser beam, the thickening level of the resist pattern is controllable uniformly, constantly and precisely, without being affected substantially by environmental changes such as temperatures and humidity, and storage period, and space pattern of resist may be formed with a fineness exceeding exposure limits or resolution limits of available irradiation sources. The process for producing a semiconductor device is characterized in that forming a resist pattern on a surface of workpiece, coating a resist pattern thickening material on the resist pattern, thickening the resist pattern to form a thickened resist pattern, and patterning the surface of workpiece by etching using the thickened resist pattern as a mask, wherein the resist pattern thickening material comprises a resin, and exhibits a pH value of above 7 and not over 14 at coating or after coating on the resist pattern.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: June 12, 2012
    Assignee: Fujitsu Limited
    Inventors: Miwa Kozawa, Koji Nozaki, Takahisa Namiki
  • Publication number: 20120126372
    Abstract: A resist pattern thickening material is disclosed that can utilize ArF excimer laser light; which, when applied over a resist pattern such as an ArF resist having a line pattern or the like, can thicken the resist pattern regardless of the size of the resist pattern; which has excellent etching resistance; and which is suited for forming a fine space pattern or the like, exceeding the exposure limits. Also disclosed is a process for forming a resist pattern and a method for manufacturing a semiconductor device, wherein the resist pattern thickening material of the present invention is suitably utilized.
    Type: Application
    Filed: January 30, 2012
    Publication date: May 24, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Miwa Kozawa, Koji Nozaki
  • Publication number: 20120098103
    Abstract: A method for producing a semiconductor device includes forming a resist pattern by coating a resist pattern thickening material to cover the surface of the resist pattern, baking the resist pattern thickening material, and developing and separating the resist pattern thickening material, wherein at least one of the coating, the baking and the developing is carried out plural times.
    Type: Application
    Filed: December 29, 2011
    Publication date: April 26, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Miwa Kozawa, Koji Nozaki