Patents by Inventor Makoto Muramatsu

Makoto Muramatsu 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: 20240126175
    Abstract: Disclosed is a method for forming a resist pattern including, in the following order, irradiating a part of a resist film containing a resist material with a first radiation, baking the resist film, irradiating the entire region including the part irradiated with the first radiation and other parts in the resist film with a second radiation in a batch, and forming a resist pattern by development for removing a part of the resist film.
    Type: Application
    Filed: September 20, 2023
    Publication date: April 18, 2024
    Inventors: Seiji NAGAHARA, Congque DINH, Makoto MURAMATSU, Kayoko CHO
  • Publication number: 20240038533
    Abstract: The present disclosure provides a substrate processing method and a substrate processing apparatus which are effective in preventing pattern collapse of an uneven pattern. The substrate processing method according to an exemplary embodiment includes replacing a liquid in a recess of a substrate having an uneven pattern of a negative type resist including a metal formed on a surface of the substrate with a solid-state stiffener, and subjecting the substrate to a molecular weight reduction processing that reduces the number of intermolecular bonds contained in the solid-state stiffener while maintaining the solid-state stiffener in a solid state.
    Type: Application
    Filed: August 10, 2021
    Publication date: February 1, 2024
    Inventors: Hiroki TADATOMO, Makoto MURAMATSU, Kenichi UEDA, Arnaud Alain Jean DAUENDORFFER, Tomoya ONITSUKA, Keisuke YOSHIDA
  • Patent number: 11823897
    Abstract: There is provided a technique of forming an insulating film containing silicon oxide. A coating solution containing polysilazane is applied onto a wafer W, the solvent of the coating solution is volatilized, and the coating film is irradiated with ultraviolet rays in nitrogen atmosphere before performing a curing process. Dangling bonds are generated in silicon which is a pre-hydrolyzed site in polysilazane. Therefore, the energy for hydrolysis is reduced, and unhydrolyzed sites are reduced even when the temperature of the curing process is 350° C. Since efficient dehydration condensation occurs, the crosslinking rate is improved, and a dense (good-quality) insulation film is formed. By forming a protective film on the surface of the coating film to which ultraviolet rays irradiated, the reaction of dangling bonds prior to the curing process is suppressed.
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: November 21, 2023
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Makoto Muramatsu, Hisashi Genjima
  • Patent number: 11693319
    Abstract: A method of processing a substrate, includes emitting light including vacuum ultraviolet light to a front surface of the substrate, which has a resist film formed thereon from a resist material for EUV lithography, before an exposure process in an interior of a processing container.
    Type: Grant
    Filed: October 8, 2021
    Date of Patent: July 4, 2023
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Keiichi Tanaka, Kosuke Yoshihara, Yoshihiro Kondo, Makoto Muramatsu, Teruhiko Kodama
  • Patent number: 11631581
    Abstract: A technique for obtaining good film quality in forming a silicon-oxide-containing insulating film as a coating film on a substrate. A coating liquid containing polysilazane is applied to a wafer, a solvent in the coating liquid is volatilized, and then the coating film is irradiated with ultraviolet rays under a nitrogen atmosphere before performing a curing process. Thus, dangling bonds are likely to be formed at hydrolyzed portions in polysilazane. Since dangling bonds are formed in advance at portions in silicon to be hydrolyzed, productivity of hydroxyl groups is enhanced. That is, since an energy required for hydrolysis is reduced, the number of the portions remaining without being hydrolyzed is reduced even when the curing process is performed at a low temperature. Therefore, dehydration synthesis occurs efficiently, which increases a crosslinking rate and makes it possible to form a dense (good film quality) insulating film.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: April 18, 2023
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Makoto Muramatsu, Yusuke Saito, Hisashi Genjima, Hiroyuki Fujii
  • Publication number: 20230077937
    Abstract: A substrate treatment method for treating a substrate, includes: applying a coating solution containing an organometallic complex, a solvent, and an additive to the substrate to form a solution film of the coating solution; heating the substrate on which the solution film of the coating solution has been formed, to form an organic constituent-containing metal oxide film being a metal oxide film containing an organic constituent contained in the additive; performing dry etching using the organic constituent-containing metal oxide film as a mask; removing the organic constituent in the organic constituent-containing metal oxide film after the dry etching; and removing, by wet etching, a film obtained by removing the organic constituent from the organic constituent-containing metal oxide film.
    Type: Application
    Filed: February 5, 2021
    Publication date: March 16, 2023
    Inventors: Yusuke SAITO, Makoto MURAMATSU, Hiroyuki FUJII
  • Publication number: 20230078946
    Abstract: A method of microfabrication includes depositing a photoresist film on a working surface of a semiconductor wafer, the photoresist film being sensitive to extreme ultraviolet radiation; exposing the photoresist film to a pattern of extreme ultraviolet radiation; performing a hybrid develop of the photoresist film. The hybrid develop includes executing a first development process to remove a first portion of the photoresist film; stopping the development of the photoresist film after the first development process, the photo resist film including a structure having a first critical dimension larger than a target critical dimension after the stopping; and after stopping the development, executing a second development process to remove a second portion of the photoresist film and shrinking the critical dimension of the structure from the first critical dimension to a second critical dimension that is less than the first critical dimension.
    Type: Application
    Filed: September 13, 2022
    Publication date: March 16, 2023
    Inventors: Steven Grzeskowiak, Lior Huli, Angelique Raley, Cong Que Dinh, Makoto Muramatsu, Seiji Nagahara
  • Patent number: 11574812
    Abstract: A substrate treatment method of treating a substrate using a block copolymer containing a hydrophilic polymer and a hydrophobic polymer, includes: a resist pattern formation step of forming a predetermined resist pattern by a resist film on the substrate; a thin film formation step of forming a thin film for suppressing deformation of the resist pattern on a surface of the resist pattern; a block copolymer coating step of applying a block copolymer to the substrate after the formation of the thin film; and a polymer separation step of phase-separating the block copolymer into the hydrophilic polymer and the hydrophobic polymer.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: February 7, 2023
    Assignee: Tokyo Electron Limited
    Inventors: Makoto Muramatsu, Tadatoshi Tomita, Hisashi Genjima, Gen You, Takahiro Kitano
  • Publication number: 20220316059
    Abstract: A substrate processing method includes a protective film forming step, an insulating material depositing step, a protective film removing step, and a metal material depositing step. In the protective film forming step, a protective film is formed on a metal film among the metal film and an insulating film exposed on the surface of a substrate, using a film-forming material that is selectively adsorbed onto the metal film. In the insulating material depositing step, after the protective film forming step, an insulating material is deposited on the surface of the insulating film using an atomic layer deposition method. In the protective film removing step, the protective film is removed from the surface of the metal film after the insulating material depositing step. In the metal material depositing step, a metal material is deposited on the metal film after the protective film removing step.
    Type: Application
    Filed: July 13, 2020
    Publication date: October 6, 2022
    Inventors: Koukichi HIROSHIRO, Makoto MURAMATSU, Koji KAGAWA, Kenji SEKIGUCHI
  • Publication number: 20220208547
    Abstract: There is provided a technique of forming an insulating film containing silicon oxide. A coating solution containing polysilazane is applied onto a wafer W, the solvent of the coating solution is volatilized, and the coating film is irradiated with ultraviolet rays in nitrogen atmosphere before performing a curing process. Dangling bonds are generated in silicon which is a pre-hydrolyzed site in polysilazane. Therefore, the energy for hydrolysis is reduced, and unhydrolyzed sites are reduced even when the temperature of the curing process is 350° C. Since efficient dehydration condensation occurs, the crosslinking rate is improved, and a dense (good-quality) insulation film is formed. By forming a protective film on the surface of the coating film to which ultraviolet rays irradiated, the reaction of dangling bonds prior to the curing process is suppressed.
    Type: Application
    Filed: March 17, 2022
    Publication date: June 30, 2022
    Inventors: Makoto Muramatsu, Hisashi Genjima
  • Patent number: 11315784
    Abstract: There is provided a technique of forming an insulating film containing silicon oxide. A coating solution containing polysilazane is applied onto a wafer W, the solvent of the coating solution is volatilized, and the coating film is irradiated with ultraviolet rays in nitrogen atmosphere before performing a curing process. Dangling bonds are generated in silicon which is a pre-hydrolyzed site in polysilazane. Therefore, the energy for hydrolysis is reduced, and unhydrolyzed sites are reduced even when the temperature of the curing process is 350° C. Since efficient dehydration condensation occurs, the crosslinking rate is improved, and a dense (good-quality) insulation film is formed. By forming a protective film on the surface of the coating film to which ultraviolet rays irradiated, the reaction of dangling bonds prior to the curing process is suppressed.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: April 26, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Makoto Muramatsu, Hisashi Genjima
  • Publication number: 20220113628
    Abstract: A method of processing a substrate, includes emitting light including vacuum ultraviolet light to a front surface of the substrate, which has a resist film formed thereon from a resist material for EUV lithography, before an exposure process in an interior of a processing container.
    Type: Application
    Filed: October 8, 2021
    Publication date: April 14, 2022
    Inventors: Keiichi TANAKA, Kosuke YOSHIHARA, Yoshihiro KONDO, Makoto MURAMATSU, Teruhiko KODAMA
  • Publication number: 20210159074
    Abstract: There is provided a technique of forming an insulating film containing silicon oxide. A coating solution containing polysilazane is applied onto a wafer W, the solvent of the coating solution is volatilized, and the coating film is irradiated with ultraviolet rays in nitrogen atmosphere before performing a curing process. Dangling bonds are generated in silicon which is a pre-hydrolyzed site in polysilazane. Therefore, the energy for hydrolysis is reduced, and unhydrolyzed sites are reduced even when the temperature of the curing process is 350° C. Since efficient dehydration condensation occurs, the crosslinking rate is improved, and a dense (good-quality) insulation film is formed. By forming a protective film on the surface of the coating film to which ultraviolet rays irradiated, the reaction of dangling bonds prior to the curing process is suppressed.
    Type: Application
    Filed: August 28, 2018
    Publication date: May 27, 2021
    Inventors: Makoto MURAMATSU, Hisashi GENJIMA
  • Publication number: 20200211838
    Abstract: A technique for obtaining good film quality in forming a silicon-oxide-containing insulating film as a coating film on a substrate. A coating liquid containing polysilazane is applied to a wafer, a solvent in the coating liquid is volatilized, and then the coating film is irradiated with ultraviolet rays under a nitrogen atmosphere before performing a curing process. Thus, dangling bonds are likely to be formed at hydrolyzed portions in polysilazane. Since dangling bonds are formed in advance at portions in silicon to be hydrolyzed, productivity of hydroxyl groups is enhanced. That is, since an energy required for hydrolysis is reduced, the number of the portions remaining without being hydrolyzed is reduced even when the curing process is performed at a low temperature. Therefore, dehydration synthesis occurs efficiently, which increases a crosslinking rate and makes it possible to form a dense (good film quality) insulating film.
    Type: Application
    Filed: March 13, 2018
    Publication date: July 2, 2020
    Inventors: Makoto MURAMATSU, Yusuke SAITO, Hisashi GENJIMA, Hiroyuki FUJII
  • Patent number: 10622267
    Abstract: Described herein are technologies to facilitate device fabrication, especially those that involve spin-on coatings of a substrate (e.g., wafer). More particularly, technologies described herein facilitate the planarization (i.e., flatness) of spin-on coatings during the device fabrication to form a uniformly planar film or layer on the substrate. This abstract itself is not intended to limit the scope of this patent. The scope of the present invention is pointed out in the appending claims.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: April 14, 2020
    Assignee: Tokyo Electron Limited
    Inventors: Ryan L. Burns, Benjamen M. Rathsack, Mark H. Somervell, Makoto Muramatsu
  • Patent number: 10586711
    Abstract: A substrate processing method of processing a substrate using a block copolymer containing a hydrophilic polymer and a hydrophobic polymer, the substrate processing method includes: a block copolymer coating step of applying the block copolymer onto the substrate on which a predetermined projecting and recessed pattern is formed, to form a coating film of the block copolymer; a polymer separation step of phase-separating the block copolymer into the hydrophilic polymer and the hydrophobic polymer; a polymer removal step of selectively removing the hydrophilic polymer from the phase-separated block copolymer; and after the block copolymer coating step and before the polymer removal step, a film thickness reduction step of reducing a film thickness of the coating film of the block copolymer.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: March 10, 2020
    Assignee: Tokyo Electron Limited
    Inventors: Makoto Muramatsu, Tadatoshi Tomita, Hisashi Genjima, Takahiro Kitano
  • Publication number: 20190341255
    Abstract: A substrate treatment method of treating a substrate using a block copolymer containing a hydrophilic polymer and a hydrophobic polymer, includes: a resist pattern formation step of forming a predetermined resist pattern by a resist film on the substrate; a thin film formation step of forming a thin film for suppressing deformation of the resist pattern on a surface of the resist pattern; a block copolymer coating step of applying a block copolymer to the substrate after the formation of the thin film; and a polymer separation step of phase-separating the block copolymer into the hydrophilic polymer and the hydrophobic polymer.
    Type: Application
    Filed: July 19, 2019
    Publication date: November 7, 2019
    Inventors: Makoto MURAMATSU, Tadatoshi TOMITA, Hisashi GENJIMA, Gen YOU, Takahiro KITANO
  • Patent number: 10418242
    Abstract: A substrate treatment method of treating a substrate using a block copolymer containing a hydrophilic polymer and a hydrophobic polymer, includes: a resist pattern formation step of forming a predetermined resist pattern by a resist film on the substrate; a thin film formation step of forming a thin film for suppressing deformation of the resist pattern on a surface of the resist pattern; a block copolymer coating step of applying a block copolymer to the substrate after the formation of the thin film; and a polymer separation step of phase-separating the block copolymer into the hydrophilic polymer and the hydrophobic polymer.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: September 17, 2019
    Assignee: Tokyo Electron Limited
    Inventors: Makoto Muramatsu, Tadatoshi Tomita, Hisashi Genjima, Gen You, Takahiro Kitano
  • Patent number: 10329144
    Abstract: A substrate treatment method using a block copolymer containing a hydrophilic polymer and a hydrophobic polymer includes a polymer separating step, wherein a ratio of a molecular weight of the hydrophilic polymer in the block copolymer is adjusted to 20% to 40% so that the hydrophilic polymers align at positions corresponding to a hexagonal close-packed structure in a plan view after the polymer separating step, and at the polymer separating step, a columnar first hydrophilic polymer is phase-separated on each of circular patterns of hydrophobic coating films and a columnar second hydrophilic polymer is phase-separated between the first hydrophilic polymers, and a diameter of the circular pattern is set so that the first hydrophilic polymers and the second hydrophilic polymers align at positions corresponding to the hexagonal close-packed structure in a plan view.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: June 25, 2019
    Assignee: Tokyo Electron Limited
    Inventors: Makoto Muramatsu, Tadatoshi Tomita, Hisashi Genjima, Gen You, Takahiro Kitano, Takanori Nishi
  • Patent number: 10121659
    Abstract: The present invention, when forming a pattern on a substrate, forms a film of a block copolymer containing at least two polymers on the substrate, heats the film of the block copolymer under a solvent vapor atmosphere to subject the block copolymer to phase separation, and removes one of the polymers in the film of the phase-separated block copolymer, thereby accelerating fluidization of the polymers of the block copolymer to enable acceleration of the phase separation.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: November 6, 2018
    Assignee: Tokyo Electron Limited
    Inventors: Makoto Muramatsu, Takahiro Kitano, Tadatoshi Tomita, Keiji Tanouchi