Patents by Inventor Tatsuro Nagahara

Tatsuro Nagahara 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: 20190371599
    Abstract: A substrate processing method includes a processing liquid supplying step of supplying a processing liquid to a patterned surface of a substrate having the patterned surface with projections and recesses, a processing film forming step of solidifying or curing the processing liquid supplied to the patterned surface to form, so as to follow the projections and the recesses of the patterned surface, a processing film which holds a removal object present on the patterned surface and a removing step of supplying a peeling liquid to the patterned surface to peel the processing film from the patterned surface together with the removal object, thereby removing the processing film from the substrate, while such a state is kept that the removal object is held by the processing film.
    Type: Application
    Filed: May 30, 2019
    Publication date: December 5, 2019
    Inventors: Yukifumi YOSHIDA, Manabu OKUTANI, Shuichi YASUDA, Yasunori KANEMATSU, Dai UEDA, Song ZHANG, Tatsuro NAGAHARA, Takafumi KINUTA
  • Patent number: 10494261
    Abstract: An inorganic polysilazane resin of the present invention has a Si/N ratio (i.e. a ratio of contained silicon atoms to contained nitrogen atoms) of 1.30 or more. The inorganic polysilazane resin having such a high Si content can be produced by, for example, a method in which an inorganic polysilazane compound containing both Si—NH and Si—Cl is heated to react NH with Cl, a method in which a silazane oligomer (polymer) that leaves no Si—Cl bond is synthesized and a dihalosilane is added to the synthesized silazane oligomer (polymer) to perform a thermal reaction, and the like. A siliceous film can be formed by, for example, applying a coating composition containing the inorganic polysilazane resin onto a base plate and then dried and the dried product is then oxidized by bringing the dried product into contact with water vapor or hydrogen peroxide vapor and water vapor under heated conditions.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: December 3, 2019
    Assignee: Ridgefield Acquisition
    Inventors: Takashi Fujiwara, Ralf Grottenmueller, Takashi Kanda, Tatsuro Nagahara
  • Patent number: 10451974
    Abstract: The present invention relates to a new rinse composition, the forming of resist patterns using the rinse composition, and a semiconductor device manufacturing method using the rinse composition in a photolithography method.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: October 22, 2019
    Assignee: AZ Electronic Materials (Luxembourg) S.a.r.l.
    Inventors: Kazuma Yamamoto, Yuriko Matsuura, Tomoyasu Yashima, Tatsuro Nagahara
  • Publication number: 20190250515
    Abstract: The present invention relates to a new rinse composition, the forming of resist patterns using the rinse composition, and a semiconductor device manufacturing method using the rinse composition in a photolithography method.
    Type: Application
    Filed: June 19, 2017
    Publication date: August 15, 2019
    Inventors: Kazuma YAMAMOTO, Yuriko MATSUURA, Tomoyasu YASHIMA, Tatsuro NAGAHARA
  • Publication number: 20190204747
    Abstract: [Problem] To provide a composition, which is a reverse pattern formation composition comprising an aqueous solvent having little influence on a resist pattern, and which is excellent in flatness and filling properties after coating and has excellent etching resistance. Furthermore, a method for forming a pattern using the same is provided. [Means for Solution] A reverse pattern formation composition comprising a polysiloxane compound comprising a repeating unit having a nitrogen-containing group and a solvent comprising water, and a method for forming a fine pattern using the same.
    Type: Application
    Filed: July 3, 2017
    Publication date: July 4, 2019
    Applicant: Merck Patent GmbH
    Inventors: Xiaowei WANG, Tatsuro NAGAHARA
  • Publication number: 20190113848
    Abstract: There is provided a gap filling composition which can reduce pattern collapse and a pattern forming method using the composition. There is provided a gap filling composition including a gap filling compound, an organic solvent, and as required, water, the gap filling compound having a certain structure and containing hydroxyl groups, carboxyl groups, or amino groups intramolecularly. There is provided a pattern forming method using a low molecular weight compound.
    Type: Application
    Filed: April 3, 2017
    Publication date: April 18, 2019
    Inventors: Xiaowei WANG, Tatsuro NAGAHARA
  • Publication number: 20190041757
    Abstract: [Problem] To provide a surface treatment composition having excellent coating properties and also having capabilities of improving heat resistance of a resist pattern and of making a resist pattern less soluble in a solvent; a resist pattern-surface treatment method using the composition; and a resist pattern formation method using the composition. [Solution] The present invention provides a surface treatment composition comprising a solvent and a polysiloxane compound soluble in the solvent. A silicon atom which is constituent atom of the polysiloxane connects to a nitrogen-substituted hydrocarbon group provided that the silicon atom directly binds to a carbon atom in the hydrocarbon group. The invention also provides a resist pattern-surface treatment method using the composition and a resist pattern formation method using the composition.
    Type: Application
    Filed: January 25, 2017
    Publication date: February 7, 2019
    Inventors: Xiaowei WANG, Tatsuro NAGAHARA
  • Patent number: 10191380
    Abstract: [Problem] To provide a composition capable of improving surface roughness of resist patterns, and also to provide a pattern formation method employing the composition. [Solution] The present invention provides a composition containing a particular nitrogen-containing compound, an anionic surfactant having a sulfo group, and water; and also provides a pattern formation method containing a step of applying the composition to a resist pattern beforehand developed and dried.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: January 29, 2019
    Assignee: AZ Electronic Materials (Luxembourg) S.a.r.l.
    Inventors: Kazuma Yamamoto, Tatsuro Nagahara
  • Patent number: 10000386
    Abstract: A siliceous film having high purity and a low etching rate is formed by (a) a step for forming a siliceous film on a substrate by coating a solution composed of a polysilazane, e.g., perhydropolysilazane on a substrate and then hardening (curing) the solution in an oxidizing atmosphere, or by coating a silica solution formed by a sol-gel method on a substrate, and (b) a step for heating the siliceous film in an inert gas environment containing a nitrogen-containing compound such as an alkylamine having a base dissociation constant (pKb) no greater than 4.5, or a halogen-containing compound in which the bond energy of a halogen atom such as F2, Br2, or NF3 is no greater than 60 kcal/mol, in order to anneal the film.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: June 19, 2018
    Assignee: AZ Electronic Materials (Luxembourg) S.à.r.l.
    Inventors: Masanobu Hayashi, Tatsuro Nagahara
  • Patent number: 9921481
    Abstract: The present invention provides a composition enabling to form a fine negative photoresist pattern free from troubles such as surface roughness, bridge defects or unresolved defects, and the invention also provides a pattern formation method employing that composition. The composition is used for miniaturizing a resist pattern by applying to a negative resist pattern from a chemically amplified resist composition and fattening the resist pattern. This composition comprises a polymer comprising a repeating unit having an amino group or a polymer mixture, and a solvent, and further comprises a specific amount of an acid or indicates a specific pH value. The polymer mixture comprises polymers whose HSP distance, determined from Hansen solubility parameter, is 3 or more. In the pattern formation method, the composition is cast on a negative photoresist pattern beforehand obtained by development with an organic solvent developer and is then heated to form a fine pattern.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: March 20, 2018
    Assignee: AZ Electronic Materials (Luxembourg) S.à r.l.
    Inventors: Kazuma Yamamoto, Yoshihiro Miyamoto, Takashi Sekito, Tatsuro Nagahara
  • Publication number: 20170240423
    Abstract: An inorganic polysilazane resin of the present invention has a Si/N ratio (i.e. a ratio of contained silicon atoms to contained nitrogen atoms) of 1.30 or more. The inorganic polysilazane resin having such a high Si content can be produced by, for example, a method in which an inorganic polysilazane compound containing both Si—NH and Si—Cl is heated to react NH with Cl, a method in which a silazane oligomer (polymer) that leaves no Si—Cl bond is synthesized and a dihalosilane is added to the synthesized silazane oligomer (polymer) to perform a thermal reaction, and the like. A siliceous film can be formed by, for example, applying a coating composition containing the inorganic polysilazane resin onto a base plate and then dried and the dried product is then oxidized by bringing the dried product into contact with water vapor or hydrogen peroxide vapor and water vapor under heated conditions.
    Type: Application
    Filed: May 10, 2017
    Publication date: August 24, 2017
    Inventors: Takashi Fujiwara, Ralph Grottenmueller, Takashi Kanda, Tatsuro Nagahara
  • Publication number: 20170219927
    Abstract: [Problem] To provide a composition capable of improving surface roughness of resist patterns, and also to provide a pattern formation method employing the composition. [Solution] The present invention provides a composition containing a particular nitrogen-containing compound, an anionic surfactant having a sulfo group, and water; and also provides a pattern formation method containing a step of applying the composition to a resist pattern beforehand developed and dried.
    Type: Application
    Filed: October 13, 2015
    Publication date: August 3, 2017
    Applicant: AZ ELECTRIC MATERIALS (LUXEMBOURG) S.A.R.L.
    Inventors: Kazuma YAMAMOTO, Tatsuro NAGAHARA
  • Patent number: 9411232
    Abstract: The present invention provides a composition enabling to form a fine negative photoresist pattern less suffering from surface roughness, and also provides a pattern formation method employing that composition. The composition is used for miniaturizing a resist pattern by fattening in a process of forming a positive resist pattern from a chemically amplified positive-working type resist composition, and it contains a polymer comprising a repeating unit having an amino group, a solvent, and an acid. In the pattern formation method, the composition is cast on a positive photoresist pattern beforehand obtained by development and is then heated to form a fine pattern.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: August 9, 2016
    Assignee: AZ ELECTRONIC MATERIALS (LUXEMBOURG) S.A.R.L.
    Inventors: Tatsuro Nagahara, Takashi Sekito, Kazuma Yamamoto, Masakazu Kobayashi, Noboru Satake, Masahiro Ishii
  • Publication number: 20160011508
    Abstract: The present invention provides a composition enabling to form a fine negative photoresist pattern less suffering from surface roughness, and also provides a pattern formation method employing that composition. The composition is used for miniaturizing a resist pattern by fattening in a process of forming a positive resist pattern from a chemically amplified positive-working type resist composition, and it contains a polymer comprising a repeating unit having an amino group, a solvent, and an acid. In the pattern formation method, the composition is cast on a positive photoresist pattern beforehand obtained by development and is then heated to form a fine pattern.
    Type: Application
    Filed: March 14, 2014
    Publication date: January 14, 2016
    Inventors: Tatsuro NAGAHARA, Takashi SEKITO, Kazuma YAMAMOTO, Masakazu KOBAYASHI, Noboru SATAKE, Masahiro ISHII
  • Publication number: 20160002494
    Abstract: The present invention provides a composition enabling to form a fine negative photoresist pattern free from troubles such as surface roughness, bridge defects or unresolved defects, and the invention also provides a pattern formation method employing that composition. The composition is used for miniaturizing a resist pattern by applying to a negative resist pattern from a chemically amplified resist composition and fattening the resist pattern. This composition comprises a polymer comprising a repeating unit having an amino group or a polymer mixture, and a solvent, and further comprises a specific amount of an acid or indicates a specific pH value. The polymer mixture comprises polymers whose HSP distance, determined from Hansen solubility parameter, is 3 or more. In the pattern formation method, the composition is cast on a negative photoresist pattern beforehand obtained by development with an organic solvent developer and is then heated to form a fine pattern.
    Type: Application
    Filed: February 26, 2014
    Publication date: January 7, 2016
    Inventors: Kazuma YAMAMOTO, Yoshihiro MIYAMOTO, Takashi SEKITO, Tatsuro NAGAHARA
  • Publication number: 20150298980
    Abstract: A siliceous film having high purity and a low etching rate is formed by (a) a step for forming a siliceous film on a substrate by coating a solution composed of a polysilazane, e.g., perhydropolysilazane on a substrate and then hardening (curing) the solution in an oxidizing atmosphere, or by coating a silica solution formed by a sol-gel method on a substrate, and (b) a step for heating the siliceous film in an inert gas environment containing a nitrogen-containing compound such as an alkylamine having a base dissociation constant (pKb) no greater than 4.5, or a halogen-containing compound in which the bond energy of a halogen atom such as F2, Br2, or NF3 is no greater than 60 kcal/mol, in order to anneal the film.
    Type: Application
    Filed: November 15, 2013
    Publication date: October 22, 2015
    Inventors: Masanobu HAYASHI, Tatsuro NAGAHARA
  • Patent number: 9165818
    Abstract: [Problem] To provide a method capable of forming an insulating film having homogeneous and high bulk density and less suffering defects. [Means for solving] A substrate surface is coated with a silicon dioxide dispersion containing silicon dioxide fine particles, a polymer, a surfactant and a dispersion medium; and then further coated with a polysilazane composition; and thereafter heated to form an insulating film.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: October 20, 2015
    Assignee: MERCK PATENT GMBH
    Inventors: Yusuke Takano, Tatsuro Nagahara, Shinde Ninad, Takafumi Iwata
  • Patent number: 9029071
    Abstract: The present invention provides a silicon oxynitride film formation method capable of reducing energy cost, and also provides a substrate equipped with a silicon oxynitride film formed thereby. This method comprises the steps of: casting a film-formable coating composition containing a polysilazane compound on a substrate surface to form a coat; drying the coat to remove excess of the solvent therein; and then irradiating the dried coat with UV light at a temperature lower than 150° C.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: May 12, 2015
    Assignee: Merck Patent GmbH
    Inventors: Ninad Shinde, Tatsuro Nagahara, Yusuke Takano
  • Patent number: 8969172
    Abstract: [Problem] To provide a method for forming an isolation structure having a low shrinkage percentage and a low tensile stress. [Means for Solving] A first polysilazane composition containing a porogen is cast on the surface of a substrate to form a coat, and then the coat is fired to form a porous siliceous film having a refractive index of 1.3 or less. Thereafter, the surface of the porous siliceous film is soaked with a second polysilazane composition, and then fired to form an isolation structure of a siliceous film having a refractive index of 1.4 or more.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: March 3, 2015
    Assignee: AZ Electronic Materials USA Corp.
    Inventors: Naoko Nakamoto, Katsuchika Suzuki, Shinji Sugahara, Tatsuro Nagahara
  • Publication number: 20150004421
    Abstract: An inorganic polysilazane resin of the present invention has a Si/N ratio (i.e. a ratio of contained silicon atoms to contained nitrogen atoms) of 1.30 or more. The inorganic polysilazane resin having such a high Si content can be produced by, for example, a method in which an inorganic polysilazane compound containing both Si—NH and Si—Cl is heated to react NH with Cl, a method in which a silazane oligomer (polymer) that leaves no Si—Cl bond is synthesized and a dihalosilane is added to the synthesized silazane oligomer (polymer) to perform a thermal reaction, and the like. A siliceous film can be formed by, for example, applying a coating composition containing the inorganic polysilazane resin onto a base plate and then dried and the dried product is then oxidized by bringing the dried product into contact with water vapor or hydrogen peroxide vapor and water vapor under heated conditions.
    Type: Application
    Filed: February 1, 2013
    Publication date: January 1, 2015
    Applicant: AZ ELECTRONIC MATERIALS USA CORP.
    Inventors: Takashi Fujiwara, Ralph Grottenmueller, Takashi Kanda, Tatsuro Nagahara