Patents by Inventor Hideo Namatsu

Hideo Namatsu 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: 8568534
    Abstract: The present invention provides a washing method for a device substrate, capable of sufficiently removing a resist attached to a device substrate, particularly a resist attached to fine pore portions of a pattern having a large aspect ratio. A method for washing a device substrate, which comprises a washing step of removing a resist attached to a device substrate by means of a solvent, wherein the solvent is a composition comprising at least one fluorinated compound selected from the group consisting of a hydrofluoroether, a hydrofluorocarbon and a perfluorocarbon, and a fluorinated alcohol.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: October 29, 2013
    Assignee: Asahi Glass Company, Limited
    Inventors: Hidekazu Okamoto, Hideo Namatsu
  • Patent number: 8465596
    Abstract: Disclosed is a supercritical processing apparatus and a supercritical processing method for suppressing the pattern collapse or the injection of material constituting a processing liquid into a substrate. A processing chamber receives a substrate subjected to a processing with supercritical fluid, and a liquid supply unit supplies a processing liquid including a fluorine compound to the processing chamber. A liquid discharge unit discharges the supercritical fluid from the processing chamber, a pyrolysis ingredient removing unit removes an ingredient facilitating the pyrolysis of a liquid from the processing chamber or from the liquid supplied from the liquid supply unit, and a to heating unit heats the processing liquid including a fluorine compound of hydrofluoro ether or hydrofluoro carbon.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: June 18, 2013
    Assignee: Tokyo Electron Limited
    Inventors: Takayuki Toshima, Mitsuaki Iwashita, Kazuyuki Mitsuoka, Hidekazu Okamoto, Hideo Namatsu
  • Patent number: 8143203
    Abstract: The present invention provides a washing method for a device substrate, capable of sufficiently removing a resist attached to a device substrate, particularly a resist attached to fine pore portions of a pattern having a large aspect ratio. A method for washing a device substrate, which comprises a washing step of removing a resist attached to a device substrate by means of a solvent, wherein the solvent is a composition comprising at least one fluorinated compound selected from the group consisting of a hydrofluoroether, a hydrofluorocarbon and a perfluorocarbon, and a fluorinated alcohol.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: March 27, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Hidekazu Okamoto, Hideo Namatsu
  • Publication number: 20120067379
    Abstract: The present invention provides a washing method for a device substrate, capable of sufficiently removing a resist attached to a device substrate, particularly a resist attached to fine pore portions of a pattern having a large aspect ratio. A method for washing a device substrate, which comprises a washing step of removing a resist attached to a device substrate by means of a solvent, wherein the solvent is a composition comprising at least one fluorinated compound selected from the group consisting of a hydrofluoroether, a hydrofluorocarbon and a perfluorocarbon, and a fluorinated alcohol.
    Type: Application
    Filed: November 23, 2011
    Publication date: March 22, 2012
    Applicants: NTT Advanced Technology Corporation, ASAHI GLASS COMPANY, LIMITED
    Inventors: Hidekazu Okamoto, Hideo Namatsu
  • Patent number: 8026047
    Abstract: A fine and high-accuracy pattern, which is also excellent in either or both of high sensitivity and etching resistance can be provided. Disclosed is a resist pattern forming method in which a single- or multi-layered film 2 is formed on a substrate 1 and a resist pattern is formed on the film 2 through a lithography technique including exposure and development, the method comprising performing supercritical processing in which the film 2 is brought into contact with a supercritical processing solution 5? in which an organic matter 4 is dissolved before the exposure or development.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: September 27, 2011
    Assignees: Nippon Telegraph and Telephone Corporation, Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Hideo Namatsu, Mitsuru Sato
  • Publication number: 20110214694
    Abstract: Disclosed is a supercritical processing apparatus and a supercritical processing method for suppressing the pattern collapse or the injection of material constituting a processing liquid into a substrate. A processing chamber receives a substrate subjected to a processing with supercritical fluid, and a liquid supply unit supplies a processing liquid including a fluorine compound to the processing chamber. A liquid discharge unit discharges the supercritical fluid from the processing chamber, a pyrolysis ingredient removing unit removes an ingredient facilitating the pyrolysis of a liquid from the processing chamber or from the liquid supplied from the liquid supply unit, and a to heating unit heats the processing liquid including a fluorine compound of hydrofluoro ether or hydrofluoro carbon.
    Type: Application
    Filed: March 3, 2011
    Publication date: September 8, 2011
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Takayuki TOSHIMA, Mitsuaki IWASHITA, Kazuyuki MITSUOKA, Hidekazu OKAMOTO, Hideo NAMATSU
  • Patent number: 7977036
    Abstract: A fine and high-accuracy resist pattern, which is excellent in etching resistance, can be formed. Disclosed is a resist pattern forming method, which includes the steps of developing a resist composition having photosensitivity to a predetermined light source through a lithography technique to form a resist pattern 2 on a substrate 1, and bringing the resist pattern 2 into contact with a supercritical processing solution 5? including a supercritical fluid 3? which contains a crosslinking agent 4.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: July 12, 2011
    Assignees: Nippon Telegraph and Telephone Corporation, Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Hideo Namatsu, Mitsuru Sato
  • Publication number: 20110067733
    Abstract: To provide a cleaning method capable of favorably removing an object to be cleaned having a plasma polymer formed in a plasma etching step employing a fluorinated gas. A cleaning method comprising an immersion step of immersing an object 1 to be cleaned in a cleaning liquid (fluorinated solvent) 3 containing at least a fluorine compound, wherein in the immersion step, the temperature t of the cleaning liquid 3 is at least the lower one of the normal boiling point of the fluorine compound contained in the cleaning liquid 3 at 1 atm and 100° C., and the atmospheric pressure is such a pressure that the fluorine compound is in a liquid state at the temperature t.
    Type: Application
    Filed: November 22, 2010
    Publication date: March 24, 2011
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Hidekazu Okamoto, Hideo Namatsu
  • Publication number: 20090029894
    Abstract: The present invention provides a washing method for a device substrate, capable of sufficiently removing a resist attached to a device substrate, particularly a resist attached to fine pore portions of a pattern having a large aspect ratio. A method for washing a device substrate, which comprises a washing step of removing a resist attached to a device substrate by means of a solvent, wherein the solvent is a composition comprising at least one fluorinated compound selected from the group consisting of a hydrofluoroether, a hydrofluorocarbon and a perfluorocarbon, and a fluorinated alcohol.
    Type: Application
    Filed: September 19, 2008
    Publication date: January 29, 2009
    Applicants: ASAHI GLASS COMPANY, LIMITED, NTT Advanced Technology Corporation
    Inventors: Hidekazu Okamoto, Hideo Namatsu
  • Publication number: 20080124648
    Abstract: A fine and high-accuracy pattern, which is also excellent in either or both of high sensitivity and etching resistance can be provided. Disclosed is a resist pattern forming method in which a single- or multi-layered film 2 is formed on a substrate 1 and a resist pattern is formed on the film 2 through a lithography technique including exposure and development, the method comprising performing supercritical processing in which the film 2 is brought into contact with a supercritical processing solution 5? in which an organic matter 4 is dissolved before or after the exposure or development.
    Type: Application
    Filed: January 27, 2006
    Publication date: May 29, 2008
    Applicants: Nippon Telegraph and Telephone Corporation, TOKYO OHKA KOGYO CO., LTD.
    Inventors: Hideo Namatsu, Mitsuru Sato
  • Publication number: 20080118871
    Abstract: A fine and high-accuracy resist pattern, which is excellent in etching resistance, can be formed. Disclosed is a resist pattern forming method, which includes the steps of developing a resist composition having photosensitivity to a predetermined light source through a lithography technique to form a resist pattern 2 on a substrate 1, and bringing the resist pattern 2 into contact with a supercritical processing solution 5? including a supercritical fluid 3? which contains a crosslinking agent 4.
    Type: Application
    Filed: January 27, 2006
    Publication date: May 22, 2008
    Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, TOKYO OHKA KOGYO CO., LTD.
    Inventors: Hideo Namatsu, Mitsuru Sato
  • Patent number: 6576066
    Abstract: According to a supercritical drying method of this invention, a substrate having a pattern is dipped in water and rinsed with water. Then, the substrate is placed in the reaction chamber of a predetermined sealable vessel, and surfactant-added liquid carbon dioxide is introduced into the reaction chamber. The substrate is dipped in surfactant-added liquid carbon dioxide, and liquid carbon dioxide is changed to the supercritical state. After that, supercritical carbon dioxide is gasified.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: June 10, 2003
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventor: Hideo Namatsu
  • Patent number: 6554507
    Abstract: In this invention, resist patterns formed by development are dried using a supercritical fluid such that no moisture enters the patterns.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: April 29, 2003
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventor: Hideo Namatsu
  • Publication number: 20020132192
    Abstract: In this invention, resist patterns formed by development are dried using a supercritical fluid such that no moisture enters the patterns.
    Type: Application
    Filed: December 20, 2001
    Publication date: September 19, 2002
    Inventor: Hideo Namatsu
  • Patent number: 6358673
    Abstract: In this invention, resist patterns formed by development are dried using a supercritical fluid such that no moisture enters the patterns.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: March 19, 2002
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventor: Hideo Namatsu
  • Patent number: 5811872
    Abstract: A semiconductor device includes an interlevel film constituted by a first dielectrics film containing dangling bonds and a bonded group of Si and hydrogen, and a second dielectrics film formed on the first dielectrics film.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: September 22, 1998
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Katsuyuki Machida, Katsumi Murase, Nobuhiro Shimoyama, Toshiaki Tsuchiya, Junichi Takahashi, Kazushige Minegishi, Yasuo Takahashi, Hideo Namatsu, Kazuo Imai
  • Patent number: 5512513
    Abstract: A semiconductor device includes an interlevel film constituted by a first dielectrics film containing dangling bonds and a bonded group of Si and hydrogen, and a second dielectrics film formed on the first dielectrics film.
    Type: Grant
    Filed: August 25, 1994
    Date of Patent: April 30, 1996
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Katsuyuki Machida, Katsumi Murase, Nobuhiro Shimoyama, Toshiaki Tsuchiya, Junichi Takahashi, Kazushige Minegishi, Yasuo Takahashi, Hideo Namatsu, Kazuo Imai
  • Patent number: 5376590
    Abstract: A semiconductor device includes an interlevel film constituted by a first dielectrics film containing dangling bonds and a bonded group of Si and hydrogen, and a second dielectrics film formed on the first dielectrics film.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: December 27, 1994
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Katsuyuki Machida, Katsumi Murase, Nobuhiro Shimoyama, Toshiaki Tsuchiya, Junichi Takahashi, Kazushige Minegishi, Yasuo Takahashi, Hideo Namatsu, Kazuo Imai
  • Patent number: 4738916
    Abstract: An intermediate layer material of a three-layer resist system for use in processing of a semiconductor substrate, comprising an organopolysiloxane. The organopolysiloxane is expressed by a general formula (R.sub.3 SiO.sub.1/2).sub.m.(R.sub.2 SiO).sub.n.(RSiO.sub.3/2).sub.p.(SiO.sub.2).sub.q {where R is independently a hydrocarbon group or an alkoxy group; and m, n, p and q represent composition ratios of respective units and satisfy m+n+p+q=1, 1.gtoreq.m>0, 1.gtoreq.n.gtoreq.0, 1.gtoreq.p.gtoreq.0, 1.gtoreq.q.gtoreq.0 (where p and q are not simultaneously 0), m/p.ltoreq.0.3 (where p.noteq.0), and/or m/q.ltoreq.1 (where q.noteq.0)}.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: April 19, 1988
    Assignee: Nippon Telegraph and Telephone Corp.
    Inventors: Hideo Namatsu, Akira Yoshikawa
  • Patent number: 4615782
    Abstract: An intermediate layer material of a three-layer resist system for use in processing of a semiconductor substrate, comprising an organopolysiloxane. The organopolysiloxane is expressed by a general formula (R.sub.3 SiO.sub.1/2).sub.m.(R.sub.2 SiO).sub.n.(RSiO.sub.3/2).sub.p.(SiO.sub.2).sub.q {where R is independently a hydrocarbon group or an alkoxy group; and m, n, p and q represent composition ratios of respective units and satisfy m+n+p+q=1, 1.gtoreq.m>0, 1.gtoreq.n.gtoreq.0, 1.gtoreq.p.gtoreq.0, 1.gtoreq.q.gtoreq.0 (where p and q are not simultaneously 0), m/p.ltoreq.0.3 (where p.noteq.0), and/or m/q.ltoreq.1 (where q.noteq.0)}.
    Type: Grant
    Filed: June 6, 1985
    Date of Patent: October 7, 1986
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Hideo Namatsu, Akira Yoshikawa