Patents by Inventor Sho TOMINAGA

Sho TOMINAGA 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: 20240110834
    Abstract: There is provided a radiation temperature measurement device that accurately measures a temperature of an object being measured, and that includes two infrared detection units that detect mutually different infrared wavelength bands, a spectral characteristics data storage unit that stores spectral characteristics data showing a transmittance and a reflectance of each of the objects being measured, and a temperature calculation unit that, based on infrared ray quantities detected by each of the two infrared detection units, and on the transmittance and reflectance of each of the objects being measured, calculates the temperature of each of the objects being measured.
    Type: Application
    Filed: March 8, 2022
    Publication date: April 4, 2024
    Inventors: Sho FUJINO, Koji TOMINAGA
  • Patent number: 11404281
    Abstract: First and second silicon containing films can be etched selectively against each other with high efficiency. A method includes preparing a processing target object within a chamber; etching the first silicon containing film of the processing target object by generating plasma of a processing gas within the chamber in a state that a temperature of the processing target object is set to a first temperature; and etching the second silicon containing film of the processing target object by generating the plasma of the processing gas within the chamber in a state that the temperature of the processing target object is set to a second temperature higher than the first temperature.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: August 2, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Taku Gohira, Sho Tominaga
  • Publication number: 20210104413
    Abstract: First and second silicon containing films can be etched selectively against each other with high efficiency. A method includes preparing a processing target object within a chamber; etching the first silicon containing film of the processing target object by generating plasma of a processing gas within the chamber in a state that a temperature of the processing target object is set to a first temperature; and etching the second silicon containing film of the processing target object by generating the plasma of the processing gas within the chamber in a state that the temperature of the processing target object is set to a second temperature higher than the first temperature.
    Type: Application
    Filed: December 16, 2020
    Publication date: April 8, 2021
    Inventors: Taku Gohira, Sho Tominaga
  • Patent number: 10903084
    Abstract: First and second silicon containing films can be etched selectively against each other with high efficiency. A method includes preparing a processing target object within a chamber; etching the first silicon containing film of the processing target object by generating plasma of a processing gas within the chamber in a state that a temperature of the processing target object is set to a first temperature; and etching the second silicon containing film of the processing target object by generating the plasma of the processing gas within the chamber in a state that the temperature of the processing target object is set to a second temperature higher than the first temperature.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: January 26, 2021
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Taku Gohira, Sho Tominaga
  • Patent number: 10707090
    Abstract: A plasma etching method includes a first process of generating a first plasma from a first processing gas that contains fluorine-containing gas and hydrogen-containing gas, by using a first radio frequency power, to etch a laminated film including a first silicon-containing film layer and a second silicon-containing film layer that is different from the first silicon-containing film layer, with the generated first plasma; and a second process that is performed after the first process and includes generating a second plasma from a second processing gas that contains bromine-containing gas, by using a second radio frequency power, to etch the laminated film with the generated second plasma. Unevenness is formed at an interface between the first silicon-containing film layer and the second silicon-containing film layer in the first process, and the unevenness is removed in the second process.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: July 7, 2020
    Assignee: Tokyo Electron Limited
    Inventors: Wataru Takayama, Sho Tominaga, Yoshiki Igarashi
  • Patent number: 10381237
    Abstract: An etching method performed by an etching apparatus includes a first process of causing a first high-frequency power supply to output a first high-frequency power with a first frequency and causing a second high-frequency power supply to output a second high-frequency power with a second frequency lower than the first frequency in a cryogenic environment where the temperature of a wafer is ?35° C. or lower, to generate plasma from a hydrogen-containing gas and a fluorine-containing gas and to etch, with the plasma, a multi-layer film of silicon dioxide and silicon nitride and a single-layer film of silicon dioxide that are formed on the wafer; and a second process of stopping the output of the second high-frequency power supply. The first process and the second process are repeated multiple times, and the first process is shorter in time than the second process.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: August 13, 2019
    Assignee: Tokyo Electron Limited
    Inventors: Ryohei Takeda, Sho Tominaga, Yoshinobu Ooya
  • Publication number: 20190244829
    Abstract: First and second silicon containing films can be etched selectively against each other with high efficiency. A method includes preparing a processing target object within a chamber; etching the first silicon containing film of the processing target object by generating plasma of a processing gas within the chamber in a state that a temperature of the processing target object is set to a first temperature; and etching the second silicon containing film of the processing target object by generating the plasma of the processing gas within the chamber in a state that the temperature of the processing target object is set to a second temperature higher than the first temperature.
    Type: Application
    Filed: April 19, 2019
    Publication date: August 8, 2019
    Inventors: Taku Gohira, Sho Tominaga
  • Patent number: 10304691
    Abstract: Silicon oxide and silicon nitride can be etched selectively against each other with high efficiency. A method includes preparing a processing target object within a chamber; etching the silicon oxide of the processing target object by generating plasma of a processing gas containing carbon, hydrogen and fluorine within the chamber in a state that a temperature of the processing target object is set to a first temperature; and etching the silicon nitride of the processing target object by generating the plasma of the processing gas containing carbon, hydrogen and fluorine within the chamber in a state that the temperature of the processing target object is set to a second temperature higher than the first temperature.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: May 28, 2019
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Taku Gohira, Sho Tominaga
  • Publication number: 20180261465
    Abstract: An etching method performed by an etching apparatus includes a first process of causing a first high-frequency power supply to output a first high-frequency power with a first frequency and causing a second high-frequency power supply to output a second high-frequency power with a second frequency lower than the first frequency in a cryogenic environment where the temperature of a wafer is ?35° C. or lower, to generate plasma from a hydrogen-containing gas and a fluorine-containing gas and to etch, with the plasma, a multi-layer film of silicon dioxide and silicon nitride and a single-layer film of silicon dioxide that are formed on the wafer; and a second process of stopping the output of the second high-frequency power supply. The first process and the second process are repeated multiple times, and the first process is shorter in time than the second process.
    Type: Application
    Filed: May 11, 2018
    Publication date: September 13, 2018
    Inventors: Ryohei TAKEDA, Sho TOMINAGA, Yoshinobu OOYA
  • Publication number: 20180226264
    Abstract: A plasma etching method includes a first process of generating a first plasma from a first processing gas that contains fluorine-containing gas and hydrogen-containing gas, by using a first radio frequency power, to etch a laminated film including a first silicon-containing film layer and a second silicon-containing film layer that is different from the first silicon-containing film layer, with the generated first plasma; and a second process that is performed after the first process and includes generating a second plasma from a second processing gas that contains bromine-containing gas, by using a second radio frequency power, to etch the laminated film with the generated second plasma. Unevenness is formed at an interface between the first silicon-containing film layer and the second silicon-containing film layer in the first process, and the unevenness is removed in the second process.
    Type: Application
    Filed: April 10, 2018
    Publication date: August 9, 2018
    Inventors: Wataru TAKAYAMA, Sho TOMINAGA, Yoshiki IGARASHI
  • Patent number: 9997374
    Abstract: An etching method performed by an etching apparatus includes a first process of causing a first high-frequency power supply to output a first high-frequency power with a first frequency and causing a second high-frequency power supply to output a second high-frequency power with a second frequency lower than the first frequency in a cryogenic environment where the temperature of a wafer is ?35° C. or lower, to generate plasma from a hydrogen-containing gas and a fluorine-containing gas and to etch, with the plasma, a multi-layer film of silicon dioxide and silicon nitride and a single-layer film of silicon dioxide that are formed on the wafer; and a second process of stopping the output of the second high-frequency power supply. The first process and the second process are repeated multiple times, and the first process is shorter in time than the second process.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: June 12, 2018
    Assignee: Tokyo Electron Limited
    Inventors: Ryohei Takeda, Sho Tominaga, Yoshinobu Ooya
  • Patent number: 9966273
    Abstract: There is provided a plasma etching method. The plasma etching method includes generating plasma, by using a first high frequency power output from a first high frequency power supply, from a first processing gas that contains fluorine-containing gas, thereby etching a laminated film of a silicon oxide film and a silicon nitride film through the generated plasma, and generating plasma, by using the first high frequency power, from a second processing gas that contains bromine-containing gas, thereby etching the laminated film through the generated plasma.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: May 8, 2018
    Assignee: Tokyo Electron Limited
    Inventors: Wataru Takayama, Sho Tominaga, Yoshiki Igarashi
  • Publication number: 20180076048
    Abstract: Silicon oxide and silicon nitride can be etched selectively against each other with high efficiency. A method includes preparing a processing target object within a chamber; etching the silicon oxide of the processing target object by generating plasma of a processing gas containing carbon, hydrogen and fluorine within the chamber in a state that a temperature of the processing target object is set to a first temperature; and etching the silicon nitride of the processing target object by generating the plasma of the processing gas containing carbon, hydrogen and fluorine within the chamber in a state that the temperature of the processing target object is set to a second temperature higher than the first temperature.
    Type: Application
    Filed: September 13, 2017
    Publication date: March 15, 2018
    Inventors: Taku Gohira, Sho Tominaga
  • Patent number: 9779961
    Abstract: Disclosed is a method for etching a first region including a multi-layer film formed by providing silicon oxide films and silicon nitride films alternately, and a second region having a single silicon oxide film. The etching method includes: providing a processing target object including a mask provided on the first region and the second region within a processing container of a plasma processing apparatus; generating plasma of a first processing gas including a hydrofluorocarbon gas within the processing container that accommodates the processing target object; and generating plasma of a second processing gas including a fluorocarbon gas within the processing container that accommodates the processing target object. The step of generating the plasma of the first processing gas and the step of generating the plasma of the second processing gas are alternately repeated.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: October 3, 2017
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Yusuke Saitoh, Yu Nagatomo, Hayato Hishinuma, Wataru Takayama, Sho Tominaga, Yuki Kaneko
  • Publication number: 20170178921
    Abstract: An etching method performed by an etching apparatus includes a first process of causing a first high-frequency power supply to output a first high-frequency power with a first frequency and causing a second high-frequency power supply to output a second high-frequency power with a second frequency lower than the first frequency in a cryogenic environment where the temperature of a wafer is ?35° C. or lower, to generate plasma from a hydrogen-containing gas and a fluorine-containing gas and to etch, with the plasma, a multi-layer film of silicon dioxide and silicon nitride and a single-layer film of silicon dioxide that are formed on the wafer; and a second process of stopping the output of the second high-frequency power supply. The first process and the second process are repeated multiple times, and the first process is shorter in time than the second process.
    Type: Application
    Filed: December 12, 2016
    Publication date: June 22, 2017
    Inventors: Ryohei TAKEDA, Sho TOMINAGA, Yoshinobu OOYA
  • Publication number: 20170162399
    Abstract: There is provided a plasma etching method. The plasma etching method includes generating plasma, by using a first high frequency power output from a first high frequency power supply, from a first processing gas that contains fluorine-containing gas, thereby etching a laminated film of a silicon oxide film and a silicon nitride film through the generated plasma, and generating plasma, by using the first high frequency power, from a second processing gas that contains bromine-containing gas, thereby etching the laminated film through the generated plasma.
    Type: Application
    Filed: November 28, 2016
    Publication date: June 8, 2017
    Inventors: Wataru TAKAYAMA, Sho TOMINAGA, Yoshiki IGARASHI
  • Patent number: 9666446
    Abstract: An etching method includes generating a plasma from a hydrogen-containing gas and a fluorine-containing gas with high-frequency electric power for plasma generation. A first film including a silicon oxide film and a silicon nitride film is etched with the generated plasma in an environment at a temperature lower than or equal to ?30° C. The first etch rate of first etching that etches the first film and the second etch rate of second etching that etches a second film having a structure different from the structure of the first film are controlled, so that the difference between the first etch rate and the second etch rate is within ±20% of the first etch rate.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: May 30, 2017
    Assignee: Tokyo Electron Limited
    Inventors: Sho Tominaga, Wataru Takayama, Yoshiki Igarashi
  • Publication number: 20160314986
    Abstract: An etching method includes generating a plasma from a hydrogen-containing gas and a fluorine-containing gas with high-frequency electric power for plasma generation. A first film including a silicon oxide film and a silicon nitride film is etched with the generated plasma in an environment at a temperature lower than or equal to ?30° C. The first etch rate of first etching that etches the first film and the second etch rate of second etching that etches a second film having a structure different from the structure of the first film are controlled, so that the difference between the first etch rate and the second etch rate is within ±20% of the first etch rate.
    Type: Application
    Filed: April 18, 2016
    Publication date: October 27, 2016
    Inventors: Sho TOMINAGA, Wataru TAKAYAMA, Yoshiki IGARASHI
  • Publication number: 20160064245
    Abstract: Disclosed is a method for etching a first region including a multi-layer film formed by providing silicon oxide films and silicon nitride films alternately, and a second region having a single silicon oxide film. The etching method includes: providing a processing target object including a mask provided on the first region and the second region within a processing container of a plasma processing apparatus; generating plasma of a first processing gas including a hydrofluorocarbon gas within the processing container that accommodates the processing target object; and generating plasma of a second processing gas including a fluorocarbon gas within the processing container that accommodates the processing target object. The step of generating the plasma of the first processing gas and the step of generating the plasma of the second processing gas are alternately repeated.
    Type: Application
    Filed: August 14, 2015
    Publication date: March 3, 2016
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yusuke SAITOH, Yu NAGATOMO, Hayato HISHINUMA, Wataru TAKAYAMA, Sho TOMINAGA, Yuki KANEKO