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: 9412585
    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: Grant
    Filed: May 29, 2015
    Date of Patent: August 9, 2016
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Ryota Sasajima, Yoshinobu Nakamura
  • Patent number: 9394607
    Abstract: The present invention provides technology capable of suppressing a deposition of by-products in a substrate processing apparatus. When a process gas is supplied into a process vessel, an inert gas having a flow rate controlled by a flow rate controller is supplied to a first and second supply pipes through a third supply pipe, the inert gas of the first supply pipe is ejected into the process vessel by a first ejection part and the inert gas of the second supply pipe is ejected toward an inner wall surface by a second ejection part.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: July 19, 2016
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Masaya Nishida, Ryota Sasajima, Seiyo Nakashima, Tomoyasu Miyashita
  • Patent number: 9390911
    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: Grant
    Filed: March 18, 2013
    Date of Patent: July 12, 2016
    Assignee: Hitachi Kokusai Electric, Inc.
    Inventors: Yoshiro Hirose, Ryota Sasajima, Yoshinobu Nakamura, Ryuji Yamamoto
  • Patent number: 9378943
    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: Grant
    Filed: January 9, 2012
    Date of Patent: June 28, 2016
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Yoshiro Hirose, Yushin Takasawa, Tsukasa Kamakura, Yoshinobu Nakamura, Ryota Sasajima
  • Patent number: 9340872
    Abstract: There is provided a cleaning method including cleaning an interior of a process chamber in which a substrate is processed, by supplying a cleaning gas into the process chamber and exhausting the cleaning gas from the process chamber via an exhaust pipe; and cooling the exhaust pipe by maintaining a state where distribution of the cleaning gas into the exhaust pipe is substantially stopped. Also, the act of cleaning the interior of the process chamber and the act of cooling the exhaust pipe are repeated alternately.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: May 17, 2016
    Assignee: Hitachi Kokusai Electric, Inc.
    Inventors: Shintaro Kogura, Ryota Sasajima
  • Publication number: 20160097126
    Abstract: A Technique includes forming a film on a substrate in a process chamber by performing a cycle a predetermined number of times. The cycle includes non-simultaneously performing supplying a precursor gas to the substrate, exhausting the precursor gas from the process chamber, supplying an oxygen-containing gas to the substrate, exhausting the oxygen-containing gas from the process chamber, supplying a hydrogen-containing gas to the substrate, and exhausting the hydrogen-containing gas from the process chamber. At least one among an amount of an exhausted gas and an exhaust rate in the act of exhausting the oxygen-containing gas is set greater than that in the act of exhausting the precursor gas, and at least one among an amount of an exhausted gas and an exhaust rate in the act of exhausting the hydrogen-containing gas is set greater than that in the act of exhausting the precursor gas.
    Type: Application
    Filed: September 21, 2015
    Publication date: April 7, 2016
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Shintaro KOGURA, Ryota SASAJIMA
  • Patent number: 9263253
    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: Grant
    Filed: September 13, 2013
    Date of Patent: February 16, 2016
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Ryota Sasajima, Yoshinobu Nakamura
  • Publication number: 20160013042
    Abstract: There is provided a method of manufacturing a semiconductor device, including pre-treating a surface of an insulating film formed on a substrate by supplying a precursor containing a first element and a halogen element to the substrate; and forming a film containing the first element and a second element on the pre-treated surface of the insulating film by performing a cycle a predetermined number of times, the cycle including supplying the precursor to the substrate; and supplying a reactant containing the second element to the substrate, wherein the act of supplying the precursor and the act of supplying the reactant are performed non-simultaneously.
    Type: Application
    Filed: July 8, 2015
    Publication date: January 14, 2016
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Yoshitomo HASHIMOTO, Yoshiro HIROSE, Katsuyoshi HARADA, Yoshinobu NAKAMURA, Ryota SASAJIMA
  • Publication number: 20160013044
    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: September 24, 2015
    Publication date: January 14, 2016
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Yoshiro Hirose, Yushin Takasawa, Tsukasa Kamakura, Yoshinobu Nakamura, Ryota Sasajima
  • Publication number: 20150376781
    Abstract: There is provided a cleaning method including cleaning an interior of a process chamber in which a substrate is processed, by supplying a cleaning gas into the process chamber and exhausting the cleaning gas from the process chamber via an exhaust pipe; and cooling the exhaust pipe by maintaining a state where distribution of the cleaning gas into the exhaust pipe is substantially stopped. Also, the act of cleaning the interior of the process chamber and the act of cooling the exhaust pipe are repeated alternately.
    Type: Application
    Filed: June 26, 2015
    Publication date: December 31, 2015
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Shintaro KOGURA, Ryota SASAJIMA
  • Patent number: 9218955
    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: Grant
    Filed: September 16, 2013
    Date of Patent: December 22, 2015
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Ryota Sasajima, Yoshinobu Nakamura, Kazuyuki Okuda
  • Publication number: 20150267296
    Abstract: The present invention provides technology capable of suppressing a deposition of by-products in a substrate processing apparatus. When a process gas is supplied into a process vessel, an inert gas having a flow rate controlled by a flow rate controller is supplied to a first and second supply pipes through a third supply pipe, the inert gas of the first supply pipe is ejected into the process vessel by a first ejection part and the inert gas of the second supply pipe is ejected toward an inner wall surface by a second ejection part.
    Type: Application
    Filed: March 24, 2015
    Publication date: September 24, 2015
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Masaya NISHIDA, Ryota SASAJIMA, Seiyo NAKASHIMA, Tomoyasu MIYASHITA
  • Publication number: 20150262809
    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: May 29, 2015
    Publication date: September 17, 2015
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Ryota SASAJIMA, Yoshinobu NAKAMURA
  • Patent number: 9136114
    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: Grant
    Filed: November 1, 2011
    Date of Patent: September 15, 2015
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Ryota Sasajima, Yoshinobu Nakamura, Yushin Takasawa, Yoshiro Hirose
  • Patent number: 9096928
    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: Grant
    Filed: September 7, 2011
    Date of Patent: August 4, 2015
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Ryota Sasajima, Yoshiro Hirose, Naonori Akae, Osamu Kasahara
  • Publication number: 20150214028
    Abstract: Provided is a method of manufacturing a semiconductor device.
    Type: Application
    Filed: April 7, 2015
    Publication date: July 30, 2015
    Applicant: Hitachi Kokusai Electric Inc.
    Inventors: Ryota SASAJIMA, Yoshiro HIROSE, Yosuke OTA, Naonori AKAE, Kojiro YOKOZAWA
  • Publication number: 20150214042
    Abstract: Provided is a method of manufacturing a semiconductor device.
    Type: Application
    Filed: April 7, 2015
    Publication date: July 30, 2015
    Applicant: Hitachi Kokusai Electric Inc.
    Inventors: Ryota SASAJIMA, Yoshiro HIROSE, Yosuke OTA, Naonori AKAE, Kojiro YOKOZAWA
  • Patent number: 9039838
    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: Grant
    Filed: July 20, 2012
    Date of Patent: May 26, 2015
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Ryota Sasajima, Yoshiro Hirose, Yosuke Ota, Naonori Akae, Kojiro Yokozawa
  • Publication number: 20150126043
    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: January 12, 2015
    Publication date: May 7, 2015
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Ryota SASAJIMA, Yoshinobu NAKAMURA
  • Publication number: 20150101755
    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: December 17, 2014
    Publication date: April 16, 2015
    Applicant: Hitachi Kokusai Electric Inc.
    Inventors: Yoshiro HIROSE, Yushin TAKASAWA, Tsukasa KAMAKURA, Yoshinobu NAKAMURA, Ryota SASAJIMA