Patents by Inventor Ryota Sasajima

Ryota Sasajima 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: 8951919
    Abstract: A method of manufacturing a semiconductor device includes forming a thin film containing a specific element, oxygen, carbon, and nitrogen by performing a cycle a predetermined number of times. The cycle includes supplying a specific element-containing gas, supplying a carbon-containing gas, supplying an oxidizing gas, and supplying a nitriding gas. The act of supplying the nitriding gas is performed before the act of supplying the specific element-containing gas, and the act of supplying the carbon-containing gas and the act of supplying the oxidizing gas are not performed until the act of supplying the specific element-containing gas is performed.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: February 10, 2015
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Ryota Sasajima, Yoshinobu Nakamura
  • Patent number: 8946092
    Abstract: An insulating film having features such as a low dielectric constant, a low etching rate and a high insulating property is formed. An oxycarbonitride film is formed on a substrate by performing a cycle a predetermined number of times, the cycle including: (a) supplying a gas containing an element to the substrate; (b) supplying a carbon-containing gas to the substrate; (c) supplying a nitrogen-containing gas to the substrate; and (d) supplying an oxygen-containing gas to the substrate.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: February 3, 2015
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Yoshiro Hirose, Yushin Takasawa, Tsukasa Kamakura, Yoshinobu Nakamura, Ryota Sasajima
  • Patent number: 8901014
    Abstract: Provided is a method of manufacturing a semiconductor device having a structure in which an oxide film and a nitride film are stacked. The method includes forming a stacked film having an oxide film and a nitride film stacked therein on a substrate in a processing container by alternately performing a first cycle and a second cycle a predetermined number of times, the first cycle comprising forming the oxide film by supplying a source gas, a nitriding gas and an oxidizing gas to the substrate in the processing container a predetermined number of times, and the second cycle comprising forming the nitride film by supplying the source gas and the nitriding gas to the substrate in the processing container a predetermined number of times, wherein the forming of the oxide film and the forming of the nitride film are consecutively performed while retaining a temperature of the substrate constant.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: December 2, 2014
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Yosuke Ota, Naonori Akae, Yoshiro Hirose, Ryota Sasajima
  • Publication number: 20140220787
    Abstract: A method of manufacturing a semiconductor device includes forming a thin film containing a specific element, oxygen, carbon, and nitrogen by performing a cycle a predetermined number of times. The cycle includes supplying a specific element-containing gas, supplying a carbon-containing gas, supplying an oxidizing gas, and supplying a nitriding gas. The act of supplying the nitriding gas is performed before the act of supplying the specific element-containing gas, and the act of supplying the carbon-containing gas and the act of supplying the oxidizing gas are not performed until the act of supplying the specific element-containing gas is performed.
    Type: Application
    Filed: April 11, 2014
    Publication date: August 7, 2014
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Ryota SASAJIMA, Yoshinobu NAKAMURA
  • Patent number: 8728954
    Abstract: A method of manufacturing a semiconductor device includes forming a thin film containing a specific element, oxygen, carbon, and nitrogen by performing a cycle a predetermined number of times. The cycle includes supplying a specific element-containing gas, supplying a carbon-containing gas, supplying an oxidizing gas, and supplying a nitriding gas. The act of supplying the nitriding gas is performed before the act of supplying the specific element-containing gas, and the act of supplying the carbon-containing gas and the act of supplying the oxidizing gas are not performed until the act of supplying the specific element-containing gas is performed.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: May 20, 2014
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Ryota Sasajima, Yoshinobu Nakamura
  • Publication number: 20140080319
    Abstract: A method of manufacturing a semiconductor device includes forming a thin film containing a predetermined element, oxygen, carbon, and nitrogen on a substrate by performing a cycle a predetermined number of times. The cycle includes supplying a predetermined element-containing gas to the substrate; supplying a carbon-containing gas and a plasma-excited inert gas to the substrate; supplying an oxidizing gas to the substrate; and supplying a nitriding gas to the substrate.
    Type: Application
    Filed: September 16, 2013
    Publication date: March 20, 2014
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Ryota SASAJIMA, Yoshinobu NAKAMURA, Kazuyuki OKUDA
  • Publication number: 20140080314
    Abstract: A method of manufacturing a semiconductor device includes forming a thin film containing a predetermined element, oxygen, carbon, and nitrogen on a substrate by performing a cycle a predetermined number of times after supplying a nitriding gas to the substrate. The cycle includes performing the following steps in the following order: supplying a carbon-containing gas to the substrate; supplying a predetermined element-containing gas to the substrate; supplying the carbon-containing gas to the substrate; supplying an oxidizing gas to the substrate; and supplying the nitriding gas to the substrate.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 20, 2014
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Ryota SASAJIMA, Yoshinobu NAKAMURA
  • Publication number: 20140051260
    Abstract: A method of manufacturing a semiconductor device includes forming a thin film containing a specific element, oxygen, carbon, and nitrogen by performing a cycle a predetermined number of times. The cycle includes supplying a specific element-containing gas, supplying a carbon-containing gas, supplying an oxidizing gas, and supplying a nitriding gas. The act of supplying the nitriding gas is performed before the act of supplying the specific element-containing gas, and the act of supplying the carbon-containing gas and the act of supplying the oxidizing gas are not performed until the act of supplying the specific element-containing gas is performed.
    Type: Application
    Filed: August 9, 2013
    Publication date: February 20, 2014
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Ryota SASAJIMA, Yoshinobu NAKAMURA
  • Publication number: 20140024225
    Abstract: An insulating film having features such as a low dielectric constant, a low etching rate and a high insulating property is formed. An oxycarbonitride film is formed on a substrate by performing a cycle a predetermined number of times, the cycle including: (a) supplying a gas containing an element to the substrate; (b) supplying a carbon-containing gas to the substrate; (c) supplying a nitrogen-containing gas to the substrate; and (d) supplying an oxygen-containing gas to the substrate.
    Type: Application
    Filed: September 25, 2013
    Publication date: January 23, 2014
    Applicant: Hitachi Kokusai Electric Inc.
    Inventors: Yoshiro HIROSE, Yushin TAKASAWA, Tsukasa KAMAKURA, Yoshinobu NAKAMURA, Ryota SASAJIMA
  • Publication number: 20130273748
    Abstract: A method of manufacturing a semiconductor device is provided, including: forming an oxynitride film having a specific film thickness on a substrate by performing multiple numbers of times a cycle of: forming a specific element-containing layer on the substrate by supplying a source gas containing a specific element into a processing vessel in which the substrate is housed; changing the specific element-containing layer to a nitride layer by supplying a nitrogen-containing gas into the processing vessel; and changing the nitride layer to an oxynitride layer by supplying an oxygen-containing gas and an inert gas into the processing vessel, with this sequence as one cycle, wherein a composition ratio of the oxynitride film having the specific film thickness is controlled by controlling a partial pressure of the oxygen-containing gas in the processing vessel, in changing the nitride layer to the oxynitride layer.
    Type: Application
    Filed: November 1, 2011
    Publication date: October 17, 2013
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Ryota Sasajima, Yoshinobu Nakamura, Yushin Takasawa, Yoshiro Hirose
  • Patent number: 8546272
    Abstract: An insulating film having features such as a low dielectric constant, a low etching rate and a high insulating property is formed.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: October 1, 2013
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Yoshiro Hirose, Yushin Takasawa, Tsukasa Kamakura, Yoshinobu Nakamura, Ryota Sasajima
  • Publication number: 20130252439
    Abstract: A method includes: forming a thin film on a substrate by performing a cycle a predetermined number of times, the cycle including: (a) supplying a source gas to the substrate in a process chamber; and (b) supplying a reactive gas to the substrate in the process chamber, wherein at least one of (a) and (b) includes: (c) supplying the source gas or the reactive gas at a first flow rate with exhaust of an inside of the process chamber being suspended until an inner pressure of the process chamber reaches a predetermined pressure; and (d) supplying the source gas or the reactive gas at a second flow rate less than the first flow rate with exhaust of the inside of the process chamber being performed while maintaining the inner pressure of the process chamber at the predetermined pressure after the inner pressure of the process chamber reaches the predetermined pressure.
    Type: Application
    Filed: March 18, 2013
    Publication date: September 26, 2013
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Yoshiro Hirose, Ryota Sasajima, Yoshinobu Nakamura, Ryuji Yamamoto
  • Patent number: 8415258
    Abstract: Provided is a method of manufacturing a semiconductor device. The method includes: loading a substrate into a process vessel; performing a process to form an film on the substrate by alternately repeating: (a) forming a layer containing an element on the substrate by supplying at least two types of source gases into the process vessel, each of the at least two types of source gases containing the element, and (b) changing the layer containing the element by supplying reaction gas into the process vessel, the reaction gas being different from the at least two types of source gases; and unloading the processed substrate from the process vessel.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: April 9, 2013
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Naonori Akae, Yoshiro Hirose, Yushin Takasawa, Yosuke Ota, Ryota Sasajima
  • Publication number: 20130072027
    Abstract: Provided is a method of manufacturing a semiconductor device having a structure in which an oxide film and a nitride film are stacked. The method includes forming a stacked film having an oxide film and a nitride film stacked therein on a substrate in a processing container by alternately performing a first cycle and a second cycle a predetermined number of times, the first cycle comprising forming the oxide film by supplying a source gas, a nitriding gas and an oxidizing gas to the substrate in the processing container a predetermined number of times, and the second cycle comprising forming the nitride film by supplying the source gas and the nitriding gas to the substrate in the processing container a predetermined number of times, wherein the forming of the oxide film and the forming of the nitride film are consecutively performed while retaining a temperature of the substrate constant.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 21, 2013
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Yosuke OTA, Naonori AKAE, Yoshiro HIROSE, Ryota SASAJIMA
  • Publication number: 20130019804
    Abstract: Provided is a substrate processing apparatus. The apparatus includes: a process vessel, a heater, a source gas supply system, an oxygen-containing gas supply system, a hydrogen-containing gas supply system, a pressure regulator, and a controller. The controller is configured to control the parts so as to perform: (a) forming an oxide film on a substrate by alternately repeating: (a-1) forming a layer by supplying a source gas into the process vessel accommodating the substrate; and (a-2) changing the layer into an oxide layer by supplying an oxygen-containing gas and an hydrogen-containing gas into the process vessel, the inside of the process vessel being under a heated atmosphere having a low pressure; and (b) modifying the oxide film formed on the substrate by supplying the oxygen-containing gas and the hydrogen-containing gas into the process vessel, the inside of the process vessel being under the heated atmosphere having the low pressure.
    Type: Application
    Filed: July 20, 2012
    Publication date: January 24, 2013
    Applicant: Hitachi-Kokusai Electric Inc.
    Inventors: Ryota Sasajima, Yoshiro Hirose, Yosuke Ota, Naonori Ake, Kojiro Yokozawa
  • Publication number: 20120280369
    Abstract: There is provided a method for manufacturing a semiconductor device, comprising simultaneously or alternately exposing a substrate, which has two or more kinds of thin films having different elemental components laminated or exposed; and performing different modification treatments to the thin films respectively.
    Type: Application
    Filed: December 15, 2010
    Publication date: November 8, 2012
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Tatsuyuki Saito, Kazuhiro Yuasa, Yoshiro Hirose, Yuji Takebayashi, Ryota Sasajima, Katsuhiko Yamamoto, Hirohisa Yamazaki, Shintaro Kogura, Hirotaka Hamamura
  • Patent number: 8268731
    Abstract: Disclosed is a producing method of a semiconductor device, including: loading a substrate into a reaction tube; oxidizing the substrate under an atmospheric pressure by supplying a plurality of kinds of gases which react with each other and an inert gas into the reaction tube; and unloading, from the reaction tube, the substrate after the oxidizing, wherein in the oxidizing, a flow rate of the inert gas is varied in accordance with a variation of the atmospheric pressure to keep constant a partial pressure of an oxidizing gas or partial pressures of oxidizing gases in the reaction tube, and the flow rate of the inert gas is calculated based on a pre-calculated flow rate of a gas or pre-calculated flow rates of gases produced by reaction of the plurality of gases and a pre-calculated flow rate of a gas which is not consumed by the reaction and which remains or pre-calculated flow rates of gases which are not consumed by the reaction and which remain.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: September 18, 2012
    Assignee: Hitatchi Kokusai Electric Inc.
    Inventors: Naoto Nakamura, Iwao Nakamura, Ryota Sasajima
  • Patent number: 8252701
    Abstract: Provided is a method of manufacturing a semiconductor device.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: August 28, 2012
    Assignee: Hitachi-Kokusai Electric Inc.
    Inventors: Ryota Sasajima, Yoshiro Hirose, Yosuke Ota, Naonori Akae, Kojiro Yokozawa
  • Publication number: 20120184110
    Abstract: An insulating film including characteristics such as low permittivity, a low etching rate and a high insulation property is formed. Supplying a gas containing an element, a carbon-containing gas and a nitrogen-containing gas to a heated substrate in a processing vessel to form a carbonitride layer including the element, and supplying the gas containing the element and an oxygen-containing gas to the heated substrate in the processing vessel to form an oxide layer including the element are alternately repeated to form on the substrate an oxycarbonitride film having the carbonitride layer and the oxide layer alternately stacked therein.
    Type: Application
    Filed: January 9, 2012
    Publication date: July 19, 2012
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Yoshiro Hirose, Yushin Takasawa, Tsukasa Kamakura, Yoshinobu Nakamura, Ryota Sasajima
  • Publication number: 20120064733
    Abstract: Provided is a method of manufacturing a semiconductor device, including: forming a silicon oxide film on a surface of a substrate holder by repeatedly performing forming a silicon-containing layer on the surface of the substrate holder and oxidizing the silicon-containing layer; forming a thin film on a substrate by using a process gas; removing deposits attached onto the substrate holder by using a fluorine-containing gas; and reforming a silicon oxide film on the surface of the substrate holder after removal of the deposits by repeatedly performing forming a silicon-containing layer on the surface of the substrate holder and oxidizing the silicon-containing layer by using an oxygen-containing gas and a hydrogen-containing gas.
    Type: Application
    Filed: September 7, 2011
    Publication date: March 15, 2012
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Ryota SASAJIMA, Yoshiro HIROSE, Naonori AKAE, Osamu KASAHARA