Patents by Inventor Takahisa Namiki

Takahisa Namiki 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: 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: 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
  • 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: 20100305248
    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: Application
    Filed: August 13, 2010
    Publication date: December 2, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Miwa Kozawa, Koji Nozaki, Takahisa Namiki
  • Patent number: 7820367
    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: January 31, 2005
    Date of Patent: October 26, 2010
    Assignee: Fujitsu Limited
    Inventors: Miwa Kozawa, Koji Nozaki, Takahisa Namiki
  • Patent number: 7799508
    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: May 15, 2009
    Date of Patent: September 21, 2010
    Assignee: Fujitsu Limited
    Inventors: Koji Nozaki, Miwa Kozawa, Takahisa Namiki
  • Publication number: 20100227278
    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: Application
    Filed: May 19, 2010
    Publication date: September 9, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Miwa Kozawa, Koji Nozaki, Takahisa Namiki, Junichi Kon, Ei Yano
  • Patent number: 7744768
    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: December 22, 2006
    Date of Patent: June 29, 2010
    Assignee: Fujitsu Limited
    Inventors: Miwa Kozawa, Koji Nozaki, Takahisa Namiki, Junichi Kon, Ei Yano
  • Patent number: 7642650
    Abstract: A semiconductor device includes a first multilayer interconnection structure formed on a substrate and a second multilayer interconnection structure formed on the first multilayer interconnection structure, wherein the first multilayer interconnection structure includes a pillar extending from a surface of the substrate and reaching at least the second multilayer interconnection structure.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: January 5, 2010
    Assignee: Fujitsu Microelectronics Limited
    Inventors: Iwao Sugiura, Takahisa Namiki, Yoshihiro Matsuoka
  • Publication number: 20090226844
    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: Application
    Filed: May 15, 2009
    Publication date: September 10, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Koji Nozaki, Miwa Kozawa, Takahisa Namiki
  • Patent number: 7585610
    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: January 20, 2006
    Date of Patent: September 8, 2009
    Assignee: Fujitsu Limited
    Inventors: Koji Nozaki, Miwa Kozawa, Takahisa Namiki
  • Patent number: 7550248
    Abstract: The object of the present invention is to provide a resist pattern thickening material, etc. which, when coated over a resist pattern formed of ArF resist material, etc., can efficiently thicken the resist pattern such as lines and spaces pattern, etc. regardless of the composition of ArF resist material, and the like; which can easily control the thickening amount of resist pattern by process condition; and which can easily and efficiently form a fine space pattern beyond the exposure (resolution) limits of light sources of the exposure devices at low cost. The resist pattern thickening material of the present invention comprises a solubilizer which melts the resist pattern at the temperature near its melting point and- a water-soluble element. The process for forming a resist pattern of the present invention comprises forming a resist pattern and coating a resist pattern thickening material of the present invention over the surface of the resist pattern.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: June 23, 2009
    Assignee: Fujitsu Limited
    Inventors: Takahisa Namiki, Koji Nozaki, Miwa Kozawa
  • Patent number: 7452657
    Abstract: The resist composition of the present invention contains at least one of a tannin and a derivative thereof. The method of forming a resist pattern of the present invention includes: forming a resist film on a surface of an object to be processed, by using the resist composition; and exposing and developing the resist film. The method of manufacturing a semiconductor device of the present invention includes: forming a resist film on a surface of an object to be processed, by using the resist composition; exposing and developing the resist film to form a resist pattern; and patterning the surface of the object by performing an etching through the resist pattern as a mask.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: November 18, 2008
    Assignee: Fujitsu Limited
    Inventors: Takahisa Namiki, Koji Nozaki, Miwa Kozawa
  • Publication number: 20080274431
    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: Application
    Filed: June 25, 2008
    Publication date: November 6, 2008
    Applicant: FUJITSU LIMITED
    Inventors: Koji Nozaki, Miwa Kozawa, Takahisa Namiki, Junichi Kon, Ei Yano
  • Publication number: 20080220223
    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: Application
    Filed: July 31, 2007
    Publication date: September 11, 2008
    Applicant: FUJITSU LIMTIED
    Inventors: Miwa KOZAWA, Koji NOZAKI, Takahisa NAMIKI
  • Patent number: 7364829
    Abstract: The present invention provides a resist pattern thickening material which can thicken a resist pattern to be thickened regardless of a material or a size thereof so as to form a fine space pattern, exceeding an exposure limit of exposure light. The resist pattern thickening material comprises: a resin; a crosslinking agent; and a nitrogen-containing compound. In a process for forming a resist pattern of the present invention, the resist pattern thickening material is applied on a surface of a resist pattern to be thickened, thereby forming a resist pattern. A process for manufacturing a semiconductor device of the present invention includes: applying the thickening material on a surface of a resist pattern to be thickened which is formed on an underlying layer, so as to thicken the resist pattern to be thickened and form a resist pattern; and patterning the underlying layer by etching using the resist pattern.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: April 29, 2008
    Assignee: Fujitsu Limited
    Inventors: Miwa Kozawa, Koji Nozaki, Takahisa Namiki, Junichi Kon
  • Patent number: 7361448
    Abstract: The present invention provides a resist pattern thickening material which can thicken a resist pattern and form a fine space pattern, exceeding exposure limits of exposure light used during patterning. The resist pattern thickening material contains a resin and a polyhydric alcohol. 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: October 28, 2004
    Date of Patent: April 22, 2008
    Assignee: Fujitsu Limited
    Inventors: Koji Nozaki, Takahisa Namiki, Miwa Kozawa
  • Patent number: 7338750
    Abstract: A resist pattern thickness reducing material has at least one type selected from a water soluble resin and an alkali-soluble resin. A process for forming a resist pattern includes a step for coating the resist pattern thickness reducing material such that the surface of a first resist pattern formed is covered and forming a mixing layer of the resist pattern thickness reducing material and the material of the resist pattern, on the surface of the resist pattern.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: March 4, 2008
    Assignee: Fujitsu Limited
    Inventors: Miwa Kozawa, Koji Nozaki, Takahisa Namiki, Junichi Kon
  • Publication number: 20070106021
    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: Application
    Filed: December 22, 2006
    Publication date: May 10, 2007
    Applicant: FUJITSU LIMITED
    Inventors: Miwa Kozawa, Koji Nozaki, Takahisa Namiki, Junichi Kon, Ei Yano