Patents by Inventor Kentaro Kadonaga

Kentaro Kadonaga 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: 9562285
    Abstract: A method of forming a thin film containing a doping element in a vacuum atmosphere, which includes: supplying a source gas into a processing vessel being under the vacuum atmosphere through a source gas supply unit such that a source of the source gas is adsorbed onto a substrate in the processing vessel; repeating, a plurality of times, a sequence of operations of supplying a doping gas containing the doping element into the processing vessel through a doping gas supply unit, followed by sealing the doping gas inside the processing vessel, followed by vacuum-exhausting the processing vessel; supplying a reaction gas into the processing vessel through a reaction gas supply unit such that the reaction gas reacts with the source to produce a reaction product; and replacing an internal atmosphere of the processing vessel, the replacing being performed between the operations.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: February 7, 2017
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Keisuke Suzuki, Hiroki Murakami, Shingo Hishiya, Kentaro Kadonaga, Minoru Obata
  • Patent number: 9142403
    Abstract: According to an embodiment of the present disclosure a method of forming a boron-containing silicon oxycarbonitride film on a base is provided. The method includes forming a boron-containing film on the base, and forming the boron-containing silicon oxycarbonitride film by laminating a silicon carbonitride film and a silicon oxynitride film on the boron-containing film.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: September 22, 2015
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Kentaro Kadonaga, Keisuke Suzuki
  • Publication number: 20150259796
    Abstract: A method of forming a thin film containing a doping element in a vacuum atmosphere, which includes: supplying a source gas into a processing vessel being under the vacuum atmosphere through a source gas supply unit such that a source of the source gas is adsorbed onto a substrate in the processing vessel; repeating, a plurality of times, a sequence of operations of supplying a doping gas containing the doping element into the processing vessel through a doping gas supply unit, followed by sealing the doping gas inside the processing vessel, followed by vacuum-exhausting the processing vessel; supplying a reaction gas into the processing vessel through a reaction gas supply unit such that the reaction gas reacts with the source to produce a reaction product; and replacing an internal atmosphere of the processing vessel, the replacing being performed between the operations.
    Type: Application
    Filed: March 13, 2015
    Publication date: September 17, 2015
    Inventors: Keisuke SUZUKI, Hiroki MURAKAMI, Shingo HISHIYA, Kentaro KADONAGA, Minoru OBATA
  • Patent number: 9076649
    Abstract: A method of forming a thin film on a surface of target objects in a vacuum-evacuable processing chamber by using a source gas and a reaction gas includes: forming a mixed gas by mixing the source gas and an inert gas in a gas reservoir tank, and supplying the mixed gas and the reaction gas into the processing chamber.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: July 7, 2015
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Keisuke Suzuki, Kentaro Kadonaga, Volker Hemel, Bernhard Zobel
  • Patent number: 9034718
    Abstract: Provided is a semiconductor device capable of preventing destruction of an electrode having a pillar shape and densely arranged. The semiconductor device having a field-effect transistor and a capacitor having a pillar shape, the semiconductor device includes: a first electrode having a pillar shape and electrically connected to an impurity diffusion region of the field-effect transistor; a dielectric film formed at least on a side of the first electrode; a second electrode formed on the dielectric film; and a support film extending in a direction crossing a length direction of the first electrode having the pillar shape, and formed by a boron-added silicon nitride film connected to the first electrode by penetrating through at least a part of the second electrode.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: May 19, 2015
    Assignee: Tokyo Electron Limited
    Inventors: Keisuke Suzuki, Kentaro Kadonaga, Yuichiro Morozumi
  • Patent number: 8871655
    Abstract: The method of forming a silicon oxycarbonitride film on a base includes stacking a silicon carbonitride film and a silicon oxynitride film on the base to form the silicon oxycarbonitride film.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: October 28, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Keisuke Suzuki, Kentaro Kadonaga, Byoung Hoon Lee, Eun Jo Lee, Sung Duk Son, Jae Hyuk Jang, Do Hyun Park
  • Patent number: 8753717
    Abstract: A film forming method for forming a thin film including boron, nitrogen, silicon, and carbon on a surface of a processing target by supplying a boron containing gas, a nitriding gas, a silane-based gas, and a hydrocarbon gas in a processing container in which the processing target is accommodated to be vacuum sucked includes: a first process which forms a BN film by performing a cycle of alternately and intermittently supplying the boron-containing gas and the nitriding gas once or more; and a second process which forms a SiCN film by performing a cycle of intermittently supplying the silane-based gas, the hydrocarbon gas, and the nitriding gas once or more. Accordingly, the thin film including boron, nitrogen, silicon, and carbon with a low-k dielectric constant, an improved wet-etching resistance, and a reduced leak current can be formed.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: June 17, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Keisuke Suzuki, Kentaro Kadonaga, Yoshitaka Mori
  • Publication number: 20130323935
    Abstract: A method of forming a thin film on a surface of target objects in a vacuum-evacuable processing chamber by using a source gas and a reaction gas includes: forming a mixed gas by mixing the source gas and an inert gas in a gas reservoir tank, and supplying the mixed gas and the reaction gas into the processing chamber.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 5, 2013
    Inventors: Keisuke SUZUKI, Kentaro KADONAGA, Volker HEMEL, Bernhard ZOBEL
  • Publication number: 20130260576
    Abstract: According to an embodiment of the present disclosure a method of forming a boron-containing silicon oxycarbonitride film on a base is provided. The method includes forming a boron-containing film on the base, and forming the boron-containing silicon oxycarbonitride film by laminating a silicon carbonitride film and a silicon oxynitride film on the boron-containing film.
    Type: Application
    Filed: March 18, 2013
    Publication date: October 3, 2013
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kentaro KADONAGA, Keisuke SUZUKI
  • Publication number: 20130239893
    Abstract: A method for stabilizing a film forming apparatus, which can selectively perform a boron-containing nitride film forming process or a non-boron-containing nitride film forming process on at least one target object to be processed in a vacuum-evacuable processing chamber, the method includes performing a heat stabilization process to heat the interior of the processing chamber under an oxygen-containing gas atmosphere, between the boron-containing nitride film forming process and the non-boron-containing nitride film forming process when the non-boron-containing nitride film forming process is performed after the boron-containing nitride film forming process.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 19, 2013
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Keisuke SUZUKI, Kentaro Kadonaga
  • Publication number: 20130037873
    Abstract: Provided is a semiconductor device capable of preventing destruction of an electrode having a pillar shape and densely arranged. The semiconductor device having a field-effect transistor and a capacitor having a pillar shape, the semiconductor device includes: a first electrode having a pillar shape and electrically connected to an impurity diffusion region of the field-effect transistor; a dielectric film formed at least on a side of the first electrode; a second electrode formed on the dielectric film; and a support film extending in a direction crossing a length direction of the first electrode having the pillar shape, and formed by a boron-added silicon nitride film connected to the first electrode by penetrating through at least a part of the second electrode.
    Type: Application
    Filed: August 10, 2012
    Publication date: February 14, 2013
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Keisuke SUZUKI, Kentaro KADONAGA, Yuichiro MOROZUMI
  • Publication number: 20120321791
    Abstract: A film forming method for forming a thin film including boron, nitrogen, silicon, and carbon on a surface of a processing target by supplying a boron containing gas, a nitriding gas, a silane-based gas, and a hydrocarbon gas in a processing container in which the processing target is accommodated to be vacuum sucked includes: a first process which forms a BN film by performing a cycle of alternately and intermittently supplying the boron-containing gas and the nitriding gas once or more; and a second process which forms a SiCN film by performing a cycle of intermittently supplying the silane-based gas, the hydrocarbon gas, and the nitriding gas once or more. Accordingly, the thin film including boron, nitrogen, silicon, and carbon with a low-k dielectric constant, an improved wet-etching resistance, and a reduced leak current can be formed.
    Type: Application
    Filed: June 15, 2012
    Publication date: December 20, 2012
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Keisuke SUZUKI, Kentaro KADONAGA, Yoshitaka MORI
  • Patent number: 8034673
    Abstract: A film formation method for a semiconductor process performs a film formation process to form a silicon-containing insulating film doped with a metal on a target substrate, in a process field inside a process container configured to be selectively supplied with a silicon source gas and a metal source gas. The method includes forming a first insulating thin layer by use of a chemical reaction of the silicon source gas, while maintaining a shut-off state of supply of the metal source gas; then, forming a first metal thin layer by use of a chemical reaction of the metal source gas, while maintaining a shut-off state of supply of the silicon source gas; and then, forming a second insulating thin layer by use of the chemical reaction of the silicon source gas, while maintaining a shut-off state of supply of the metal source gas.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: October 11, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Kentaro Kadonaga, Yamato Tonegawa, Pao-Hwa Chou, Kazuhide Hasebe, Tetsuya Shibata
  • Patent number: 7964241
    Abstract: An insulating film is formed on a target substrate by CVD, in a process field to be selectively supplied with a first process gas containing a silane family gas, a second process gas containing a nitriding gas or oxynitriding gas, a third process gas containing a boron-containing gas, and a fourth process gas containing a carbon hydride gas. A first step performs supply of the first process gas and a preceding gas, which is one of the third and fourth process gases, while stopping supply of the second process gas and a succeeding gas, which is the other of the third and fourth process gases. A second step performs supply of the succeeding gas, while stopping supply of the second process gas and the preceding gas. A third step performs supply of the second process gas while stopping supply of the first process gas.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: June 21, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Kazuhide Hasebe, Pao-Hwa Chou, Kota Umezawa, Kentaro Kadonaga, Hao-Hsiang Chang
  • Publication number: 20090263975
    Abstract: A film formation method for a semiconductor process performs a film formation process to form a silicon-containing insulating film doped with a metal on a target substrate, in a process field inside a process container configured to be selectively supplied with a silicon source gas and a metal source gas. The method includes forming a first insulating thin layer by use of a chemical reaction of the silicon source gas, while maintaining a shut-off state of supply of the metal source gas; then, forming a first metal thin layer by use of a chemical reaction of the metal source gas, while maintaining a shut-off state of supply of the silicon source gas; and then, forming a second insulating thin layer by use of the chemical reaction of the silicon source gas, while maintaining a shut-off state of supply of the metal source gas.
    Type: Application
    Filed: June 9, 2009
    Publication date: October 22, 2009
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kentaro KADONAGA, Yamato Tonegawa, Pao-Hwa Chou, Kazuhide Hasebe, Tetsuya Shibata
  • Publication number: 20080063791
    Abstract: An insulating film is formed on a target substrate by CVD, in a process field to be selectively supplied with a first process gas containing a silane family gas, a second process gas containing a nitriding gas or oxynitriding gas, a third process gas containing a boron-containing gas, and a fourth process gas containing a carbon hydride gas. A first step performs supply of the first process gas and a preceding gas, which is one of the third and fourth process gases, while stopping supply of the second process gas and a succeeding gas, which is the other of the third and fourth process gases. A second step performs supply of the succeeding gas, while stopping supply of the second process gas and the preceding gas. A third step performs supply of the second process gas while stopping supply of the first process gas.
    Type: Application
    Filed: August 28, 2007
    Publication date: March 13, 2008
    Inventors: Kazuhide Hasebe, Pao-Hwa Chou, Kota Umezawa, Kentaro Kadonaga, Hao-Hsiang Chang