Patents by Inventor Kensaku Narushima
Kensaku Narushima 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).
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Publication number: 20240337022Abstract: A film forming apparatus, including a processing container, an interior of which is configured to be depressurized, an electrode configured to generate an electric field in a processing space inside the processing container, a radio frequency power supply configured to supply radio frequency power to the electrode, a stage arranged in the processing container to place a substrate thereon, and a film forming gas introduction part configured to introduce vaporized zirconium chloride into the processing space. The film forming gas introduction part is made of a metal and is grounded.Type: ApplicationFiled: April 2, 2024Publication date: October 10, 2024Inventors: Kensaku NARUSHIMA, Takashi KOBAYASHI, Shinya OKABE, Takashi SAKUMA, Kunihiro TADA, Satoshi YOSHIDA
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Patent number: 11984319Abstract: There is provided a method of processing a substrate, the method including: providing the substrate on which a natural oxide film is formed; performing a pre-processing on the substrate such that the natural oxide film formed on the substrate is removed; and directly forming a tungsten film on the substrate by heating a stage on which the substrate is mounted to a predetermined temperature and supplying a tungsten chloride gas and a reduction gas to the substrate which has been subjected to the pre-processing.Type: GrantFiled: February 6, 2020Date of Patent: May 14, 2024Assignee: TOKYO ELECTRON LIMITEDInventors: Kensaku Narushima, Nagayasu Hiramatsu, Takanobu Hotta, Atsushi Matsumoto, Masato Araki, Hideaki Yamasaki
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Patent number: 11873556Abstract: A raw material supply apparatus includes: a raw material supply path through which a raw material gas is supplied into a processing container; a valve provided in the raw material supply path; a pressure sensor configured to detect an internal pressure of the raw material supply path; a raw material exhaust path connected to the raw material supply path and through which the raw material gas in the raw material supply path is exhausted; an opening degree adjustment mechanism provided in the raw material exhaust path and configured to control the internal pressure of the raw material supply path based on an adjustment of an opening degree of the opening degree adjustment mechanism; and a controller configured to perform the adjustment of the opening degree of the opening degree adjustment mechanism based on a value detected by the pressure sensor.Type: GrantFiled: April 13, 2021Date of Patent: January 16, 2024Assignee: Tokyo Electron LimitedInventors: Tomohisa Kimoto, Noriyuki Watanabe, Kensaku Narushima, Kouichi Sekido, Takuya Kawaguchi
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Patent number: 11753719Abstract: A method of controlling flow rate in a gas supply device for supplying a mixed gas containing a raw material gas, which is generated by vaporizing a raw material in a raw material container, and a carrier gas, includes: supplying the mixed gas at a predetermined target flow rate; acquiring a flow rate of the mixed gas when supplying the mixed gas; specifying a stable range of the flow rate of the mixed gas acquired when acquiring the flow rate; calculating a representative value of flow rates of the mixed gas in the stable range specified when specifying the stable range; and correcting the target flow rate based on the representative value calculated when calculating the representative value and the target flow rate.Type: GrantFiled: March 13, 2019Date of Patent: September 12, 2023Assignee: TOKYO ELECTRON LIMITEDInventors: Kennan Mo, Kouichi Sekido, Takanobu Hotta, Nagayasu Hiramatsu, Atsushi Matsumoto, Kensaku Narushima
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Publication number: 20230245893Abstract: A method of forming a ruthenium silicide film on a surface of a substrate includes: forming a ruthenium film to cover a diffusion layer by supplying a gas containing a ruthenium compound to the surface of the substrate where the diffusion layer is exposed; and forming the ruthenium silicide film including Ru2Si3 by siliciding the ruthenium film by supplying a gas containing a silicon compound to the substrate while heating the substrate to a temperature within a range of 420 degrees C. or higher and lower than 500 degrees C.Type: ApplicationFiled: January 23, 2023Publication date: August 3, 2023Inventor: Kensaku NARUSHIMA
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Publication number: 20230212738Abstract: The formation of a tungsten film is promoted when forming the tungsten film using tungsten chloride on an upper layer side of a titanium silicon nitride film. A titanium silicon nitride film is formed on one surface side of a semiconductor wafer as a substrate, and an intermediate film for promoting the formation of the tungsten film made of the tungsten chloride is formed on the upper layer side of the titanium silicon nitride film by using a gas for forming the intermediate film. The tungsten film is formed on an upper layer side of the intermediate film by using a gas of the tungsten chloride.Type: ApplicationFiled: April 5, 2021Publication date: July 6, 2023Inventors: Kensaku NARUSHIMA, Takanobu HOTTA, Takuya KAWAGUCHI
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Patent number: 11629404Abstract: A method of forming a tungsten film in a penetration portion provided in a film formed on a surface of a base so as to expose the surface of the base includes: forming a barrier metal film made of a nitride of a transition metal in the penetration portion such that the barrier metal film formed on the exposed surface of the base is thicker than the barrier metal film formed on a side wall of the penetration portion; and selectively forming the tungsten film on the exposed surface of the base by supplying a tungsten chloride gas and a reducing gas for reducing the tungsten chloride gas to the penetration portion.Type: GrantFiled: March 14, 2019Date of Patent: April 18, 2023Assignee: TOKYO ELECTRON LIMITEDInventors: Kensaku Narushima, Nagayasu Hiramatsu, Atsushi Matsumoto, Takanobu Hotta
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Publication number: 20230076867Abstract: A film forming method of forming a titanium silicide film in a contact forming region of a substrate includes: preparing the substrate having the contact forming region; and forming the titanium silicide film in the contact forming region of the substrate by atomic layer deposition (ALD) by sequentially supplying TiI4 gas as a Ti precursor and a Si-containing gas as a reducing gas to the substrate.Type: ApplicationFiled: August 26, 2022Publication date: March 9, 2023Inventor: Kensaku NARUSHIMA
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Publication number: 20220396876Abstract: A showerhead includes a shower plate and a base member including a gas flow path, the base member fixing the shower plate. The showerhead includes gas supply members disposed at a gas diffusion space, the gas diffusion space being provided between the shower plate and the base member, the gas supply members being connected to the gas flow path, each of the gas supply members including outlets via which gas is radially discharged, and the gas supply members being arranged such that the gas discharged via the outlets of the gas supply members generates a rotational flow.Type: ApplicationFiled: June 2, 2022Publication date: December 15, 2022Inventors: Takuya KAWAGUCHI, Takanobu HOTTA, Kensaku NARUSHIMA, Hideaki YAMASAKI, Takashi KAKEGAWA, Toshio TAKAGI, Takaya YAMAUCHI
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Publication number: 20220356581Abstract: A gas supply device that supplies a processing gas to a processing container storing a substrate and performs a process includes: a raw material container configured to accommodate a liquid raw material or a solid raw material; a carrier gas supply configured to supply a carrier gas into the raw material container; a gas supply path configured to supply the processing gas, which includes the raw material that has been vaporized and the carrier gas, from the raw material container to the processing container; a flow meter provided in the gas supply path and configured to measure a flow rate of the processing gas; and a constricted flow path provided on a downstream side of the flow meter in the gas supply path and configured to increase an average pressure value between the constricted flow path and the flow meter in the gas supply path.Type: ApplicationFiled: September 16, 2020Publication date: November 10, 2022Inventors: Kensaku NARUSHIMA, Takanobu HOTTA, Atsushi MATSUMOTO, Takuya KAWAGUCHI, Tomohisa KIMOTO
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Patent number: 11155923Abstract: There is provided a gas supply device for vaporizing a raw material inside a raw material container and supplying a raw material gas into a processing vessel together with a carrier gas, including: a mass flow controller connected to an upstream side of the raw material container and configured to control a flow rate of the carrier gas; a flow meter connected to a downstream side of the raw material container; and a control part configured to perform a control so as not to supply the raw material gas into the processing vessel until a detection value of the flow meter with respect to the carrier gas controlled to have a constant flow rate by the mass flow controller is stabilized after replacing the raw material container.Type: GrantFiled: February 22, 2018Date of Patent: October 26, 2021Assignee: TOKYO ELECTRON LIMITEDInventors: Katsumasa Yamaguchi, Kensaku Narushima, Hironori Yagi
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Publication number: 20210324513Abstract: A raw material supply apparatus includes: a raw material supply path through which a raw material gas is supplied into a processing container; a valve provided in the raw material supply path; a pressure sensor configured to detect an internal pressure of the raw material supply path; a raw material exhaust path connected to the raw material supply path and through which the raw material gas in the raw material supply path is exhausted; an opening degree adjustment mechanism provided in the raw material exhaust path and configured to control the internal pressure of the raw material supply path based on an adjustment of an opening degree of the opening degree adjustment mechanism; and a controller configured to perform the adjustment of the opening degree of the opening degree adjustment mechanism based on a value detected by the pressure sensor.Type: ApplicationFiled: April 13, 2021Publication date: October 21, 2021Inventors: Tomohisa KIMOTO, Noriyuki WATANABE, Kensaku NARUSHIMA, Kouichi SEKIDO, Takuya KAWAGUCHI
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Patent number: 10910225Abstract: There is provided a method of forming a tungsten nitride film on a substrate to be processed, including: forming a tungsten film by repeating a cycle of alternately supplying a tungsten chloride gas and a hydrogen-containing gas with a supply of a purge gas interposed between the supply of the tungsten chloride gas and the supply of the hydrogen-containing gas; and nitriding the tungsten film by supplying a nitrogen-containing gas.Type: GrantFiled: November 27, 2018Date of Patent: February 2, 2021Assignee: TOKYO ELECTRON LIMITEDInventors: Kensaku Narushima, Atsushi Matsumoto, Nagayasu Hiramatsu, Takanobu Hotta
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Publication number: 20210010130Abstract: There is provided a substrate processing method in a substrate processing apparatus including a gas supplier that vaporizes a raw material in a raw material container and supplies a raw material gas together with a carrier gas, including: calibrating a relational expression between a flow rate of the carrier gas and a flow rate of the raw material gas; and processing a substrate in a processing container by controlling the flow rate of the carrier gas based on the relational expression and supplying the raw material gas into the processing container, wherein, in the calibrating the relational expression, the relational expression is derived by allowing the carrier gas to continuously flow.Type: ApplicationFiled: June 29, 2020Publication date: January 14, 2021Inventors: Kensaku NARUSHIMA, Takanobu HOTTA, Atsushi MATSUMOTO, Takuya KAWAGUCHI, Kouichi SEKIDO
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Patent number: 10870919Abstract: There is provided a gas supply method for temporarily storing a raw material gas generated by vaporizing a raw material accommodated in a raw material container inside a buffer tank together with a carrier gas and subsequently supplying the raw material gas into a processing container. The gas supply method includes: controlling a flow rate of a gas exhausted from the buffer tank and a flow rate of the raw material gas and the carrier gas filled in the buffer tank, so that a second internal pressure of the buffer tank becomes equal to a first internal pressure of the buffer tank when a process is performed by supplying the raw material gas into the processing container, before supplying the raw material gas into the processing container.Type: GrantFiled: February 21, 2018Date of Patent: December 22, 2020Assignee: TOKYO ELECTRON LIMITEDInventors: Katsumasa Yamaguchi, Kensaku Narushima, Hironori Yagi, Kouichi Sekido
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Patent number: 10872814Abstract: There is provided a film forming method including: an etching step of etching a portion of a base film to reduce a film thickness of the base film by intermittently supplying a tungsten chloride gas into a processing container while performing a purging step in the course of the intermittent supply of the tungsten chloride gas, wherein the processing container accommodates a substrate, and the base film is formed on a surface of the substrate; and a film forming step of forming a tungsten film on the base film by alternately supplying the tungsten chloride gas and a reducing gas for reducing the tungsten chloride gas into the processing container while performing the purging step in the course of the alternate supply of the tungsten chloride gas and the reducing gas, wherein the film forming step occurs after the etching step.Type: GrantFiled: September 18, 2019Date of Patent: December 22, 2020Assignee: TOKYO ELECTRON LIMITEDInventors: Kensaku Narushima, Takanobu Hotta, Atsushi Matsumoto
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Patent number: 10829854Abstract: There is provided a film forming method of forming a metal film, which includes: alternately supplying a metal chloride gas and a reducing gas for reducing the metal chloride gas to a substrate arranged inside a processing vessel a plurality of times, wherein the alternately supplying the metal chloride gas and the reducing gas includes a period of time during which a flow rate of the metal chloride gas gradually increases.Type: GrantFiled: February 15, 2018Date of Patent: November 10, 2020Assignee: TOKYO ELECTRON LIMITEDInventors: Kensaku Narushima, Katsumasa Yamaguchi
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Publication number: 20200258747Abstract: There is provided a method of processing a substrate, the method including: providing the substrate on which a natural oxide film is formed; performing a pre-processing on the substrate such that the natural oxide film formed on the substrate is removed; and directly forming a tungsten film on the substrate by heating a stage on which the substrate is mounted to a predetermined temperature and supplying a tungsten chloride gas and a reduction gas to the substrate which has been subjected to the pre-processing.Type: ApplicationFiled: February 6, 2020Publication date: August 13, 2020Inventors: Kensaku NARUSHIMA, Nagayasu HIRAMATSU, Takanobu HOTTA, Atsushi MATSUMOTO, Masato ARAKI, Hideaki YAMASAKI
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Publication number: 20200098624Abstract: There is provided a film forming method including: an etching step of etching a portion of a base film to reduce a film thickness of the base film by intermittently supplying a tungsten chloride gas into a processing container while performing a purging step in the course of the intermittent supply of the tungsten chloride gas, wherein the processing container accommodates a substrate, and the base film is formed on a surface of the substrate; and a film forming step of forming a tungsten film on the base film by alternately supplying the tungsten chloride gas and a reducing gas for reducing the tungsten chloride gas into the processing container while performing the purging step in the course of the alternate supply of the tungsten chloride gas and the reducing gas, wherein the film forming step occurs after the etching step.Type: ApplicationFiled: September 18, 2019Publication date: March 26, 2020Inventors: Kensaku NARUSHIMA, Takanobu HOTTA, Atsushi MATSUMOTO
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Publication number: 20190292656Abstract: A method of forming a tungsten film in a penetration portion provided in a film formed on a surface of a base so as to expose the surface of the base includes: forming a barrier metal film made of a nitride of a transition metal in the penetration portion such that the barrier metal film formed on the exposed surface of the base is thicker than the barrier metal film formed on a side wall of the penetration portion; and selectively forming the tungsten film on the exposed surface of the base by supplying a tungsten chloride gas and a reducing gas for reducing the tungsten chloride gas to the penetration portion.Type: ApplicationFiled: March 14, 2019Publication date: September 26, 2019Inventors: Kensaku NARUSHIMA, Nagayasu HIRAMATSU, Atsushi MATSUMOTO, Takanobu HOTTA