Patents by Inventor Hideharu Itatani

Hideharu Itatani 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: 20110163452
    Abstract: Provided is a semiconductor device including a metal film which can be formed with lower costs but still mange to have a necessary work function and oxidation resistance. The semiconductor device includes an insulating film disposed on a substrate; and a metal film disposed adjacent to the insulating film. The metal film includes a stacked structure of a first metal film and a second metal film. The oxidation resistance of the first metal film is greater than that of the second metal film. The second metal film has a work function greater than 4.8 eV and is different from the first metal film in material. The first metal film is disposed between the second metal film and the insulating film.
    Type: Application
    Filed: January 4, 2011
    Publication date: July 7, 2011
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Sadayoshi HORII, Arito OGAWA, Hideharu ITATANI
  • Patent number: 7968437
    Abstract: Productivity and product yield, as well as the step coverage and the adhesion are improved. A film forming process includes an initial film forming step, and a main film forming step. In the initial film forming step, a step of supplying a material gas into a processing chamber to adsorb the material gas on the substrate, and a step of supplying a first reaction gas not containing oxygen atoms into the processing chamber to cause a reaction with the material gas adsorbed on the substrate in order to from a thin film on the substrate, are repeated multiple cycles to form the thin film with the specified thickness on the substrate.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: June 28, 2011
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Hideharu Itatani, Sadayoshi Horii
  • Publication number: 20110151660
    Abstract: A method of manufacturing a semiconductor device capable of minimally preventing the property deterioration caused by the oxidation of a metal film, and a substrate processing apparatus are provided.
    Type: Application
    Filed: December 21, 2010
    Publication date: June 23, 2011
    Applicant: HITACHI-KOKUSAI ELECTRIC INC.
    Inventors: Kazuhiro HARADA, Hideharu ITATANI, Sadayoshi HORII
  • Publication number: 20110104896
    Abstract: There are provided a method of manufacturing a semiconductor device and a substrate processing apparatus, which are designed to prevent deterioration of the surface morphology of a Ni-containing film caused by dependence on an under layer, and to form a continuous film in a thin-film region. The method includes: loading a substrate into a process vessel; heating the substrate in the process vessel; pretreating the heated substrate by supplying a reducing gas into the process vessel and exhausting the reducing gas; removing the reducing gas remaining in the process vessel by supplying an inert gas into the process vessel and exhausting the inert gas; forming a nickel-containing film on the heated and pretreated substrate to a predetermined thickness by supplying a nickel-containing source into the process vessel and exhausting the nickel-containing source; and unloading the substrate from the process vessel.
    Type: Application
    Filed: October 13, 2010
    Publication date: May 5, 2011
    Applicant: HITACHI KOKUSAI ELECTRIC, INC.
    Inventors: Kazuhiro HARADA, Hideharu ITATANI, Sadayoshi HORII
  • Publication number: 20110024875
    Abstract: A high-k capacitor insulating film stable at a higher temperature is formed. There is provided a method of manufacturing a semiconductor device. The method comprises: forming an amorphous first insulating film comprising a first element on a substrate; adding a second element different from the first element to the first insulating film so as to form an amorphous second insulating film on the substrate; and annealing the second insulating film at a predetermined annealing temperature so as to form a third insulating film by changing a phase of the second insulating film. The concentration of the second element added to the first insulating film is controlled according to the annealing temperature.
    Type: Application
    Filed: July 30, 2010
    Publication date: February 3, 2011
    Applicant: HITACHI-KOKUSAI ELECTRIC INC.
    Inventors: Yuji TAKEBAYASHI, Hirohisa YAMAZAKI, Sadayoshi Horii, Hideharu ITATANI, Arito OGAWA
  • Publication number: 20110003482
    Abstract: Provided is a method of manufacturing a semiconductor device. In the method, an aluminium-containing insulation film is formed on an electrode film of a substrate by alternately repeating a process of supplying an aluminium precursor into a processing chamber in which the substrate is accommodated and exhausting the aluminium precursor from the processing chamber and a process of supplying an oxidizing or nitriding precursor into the processing chamber and exhausting the oxidizing or nitriding precursor from the processing chamber; and a high permittivity insulation film different from the aluminium-containing insulation film is formed on the aluminium-containing insulation film by alternately repeating a process of supplying a precursor into the processing chamber and exhausting the precursor from the processing chamber and a process of supplying an oxidizing precursor into the processing chamber and exhausting the oxidizing precursor from the processing chamber.
    Type: Application
    Filed: June 28, 2010
    Publication date: January 6, 2011
    Applicant: HITACHI-KOKUSAI ELECTRIC INC.
    Inventors: Arito Ogawa, Sadayoshi Horii, Taketoshi SATO, Hideharu Itatani, Nobuyuki MISE, Osamu Tonomura
  • Publication number: 20100291763
    Abstract: Oxidation of a metal film disposed under a high permittivity insulation film can be suppressed, and the productivity of a film-forming process can be improved. In a method of manufacturing a semiconductor device, a first high permittivity insulation film is formed on a substrate by alternately repeating a process of supplying a source into a processing chamber in which the substrate is accommodated and exhausting the source and a process of supplying a first oxidizing source into the processing chamber and exhausting the first oxidizing source; and a second high permittivity insulation film is formed on the first high permittivity insulation film by alternately repeating a process of supplying the source into the processing chamber and exhausting the source and a process of supplying a second oxidizing source different from the first oxidizing source into the processing chamber and exhausting the second oxidizing source.
    Type: Application
    Filed: May 17, 2010
    Publication date: November 18, 2010
    Applicant: HITACHI-KOKUSAI ELECTRIC INC.
    Inventors: Arito OGAWA, Sadayoshi Horii, Hideharu ITATANI
  • Patent number: 7723245
    Abstract: The ability to control a concentration ratio of a metal and silicon in a metal silicate film is improved, allowing a high-quality semiconductor device to be manufactured. A step is provided for supplying a first raw material, which contains a metal atom, and a second raw material, which contains a silicon atom and a nitrogen atom, into a processing chamber (4); and forming on a substrate (30) a metal silicate film containing the metal atom and silicon atom. A raw material supply ratio of the first and second raw materials is controlled in the step of forming a metal silicate film, thereby controlling a concentration ratio of the metal and silicon in the resulting metal silicate film.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: May 25, 2010
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Atsushi Sano, Sadayoshi Horii, Hideharu Itatani, Katsuhiko Yamamoto
  • Patent number: 7709276
    Abstract: A by-product (e.g., RuF5) that is produced in the process of cleaning may cover a cleaning subject film and may obstruct the progress of the cleaning. To suppress an accumulation of the by-product, a cleaning operation is divided into plural operations, performing vacuum evacuation between the divided operations to evaporate the by-product and expose a new surface of the cleaning subject film between each supply of cleaning gas.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: May 4, 2010
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Hideharu Itatani, Kazuhiro Harada
  • Patent number: 7648578
    Abstract: A substrate is held by a susceptor (holding tool) in a processing chamber. A plate is provided on a periphery of the substrate. Gas supply ports are constructed to be provided on a side of the substrate and above the plate, and to supply gas to the substrate from a space above the plate. Outlets are provided at least on an upstream side and downstream side of the substrate on the plate, and are adapted to discharge the gas to a space below the plate. An exhaust port communicates with the outlets, and is provided on an opposite side to the gas supply ports with the substrate sandwiched there between and below the plate. The outlets are composed so that conductance of the upstream outlet in a gas flow between the outlets can be larger than conductance of the downstream outlet.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: January 19, 2010
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Hideharu Itatani, Sadayoshi Horii, Hidehiro Yanai
  • Patent number: 7579276
    Abstract: To prevent particles from generating by reducing a contact-gas area and improve a purge efficiency by reducing a flow passage capacity.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: August 25, 2009
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Hideharu Itatani, Hidehiro Yanai, Sadayoshi Horii, Atsushi Sano
  • Publication number: 20090130859
    Abstract: Productivity and product yield, as well as the step coverage and the adhesion are improved. A film forming process includes an initial film forming step, and a main film forming step. In the initial film forming step, a step of supplying a material gas into a processing chamber to adsorb the material gas on the substrate, and a step of supplying a first reaction gas not containing oxygen atoms into the processing chamber to cause a reaction with the material gas adsorbed on the substrate in order to from a thin film on the substrate, are repeated multiple cycles to form the thin film with the specified thickness on the substrate.
    Type: Application
    Filed: November 10, 2006
    Publication date: May 21, 2009
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Hideharu Itatani, Sadayoshi Horii
  • Patent number: 7531467
    Abstract: To provide a manufacturing method of a semiconductor device and a substrate processing apparatus capable of easily controlling a nitrogen concentration distribution in a film containing a metal atom and a silicon atom, and manufacturing a high quality semiconductor device. The method comprises a step of forming a film containing the metal atom and the silicon atom on a substrate 30 in a reaction chamber 4, and performing a nitriding process for the film, wherein the film is formed by changing a silicon concentration at least in two stages in the step of forming a film.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: May 12, 2009
    Assignee: Hitachi Kokusai Electric, Inc.
    Inventors: Atsushi Sano, Sadayoshi Horii, Hideharu Itatani, Masayuki Asai
  • Patent number: 7524766
    Abstract: To obtain a conductive metal film having superior step coverage, adhesiveness, and high productivity. A conductive metal film or metal oxidized film suitable as a capacitor electrode is formed on a substrate by performing an excited-gas supplying step after a source gas supplying step. In the source gas supplying step, gas obtained by vaporizing an organic source is supplied to the substrate, and the gas thus supplied is allowed to be adsorbed on the substrate. In the excited-gas supplying step, oxygen or nitrogen containing gas excited by plasma is supplied to the substrate to decompose the source adsorbed on the substrate, thus forming a film. An initial film-forming stop is a step of forming the film by repeating the source gas supplying step and the excited-gas supplying step once or multiple times. A desired thickness can be obtained by one step of the initial film-forming step.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: April 28, 2009
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Hideharu Itatani, Sadayoshi Horii, Masayuki Asai, Atsushi Sano
  • Publication number: 20090035947
    Abstract: The present invention provides a manufacturing method of a semiconductor device that has a rapid film formation rate and high productivity, and to provide a substrate processing apparatus.
    Type: Application
    Filed: June 13, 2006
    Publication date: February 5, 2009
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Sadayoshi Horii, Hideharu Itatani, Kazuhiro Harada
  • Publication number: 20080305633
    Abstract: A method of manufacturing a semiconductor device comprises carrying a substrate into a processing chamber, forming a film containing ruthenium on the substrate by supplying a material gas into the processing chamber, carrying the film-formed substrate out of the processing chamber; and cleaning an inside of the processing chamber by executing, alternately plural times, removing deposits containing ruthenium deposited in the processing chamber by supplying a cleaning gas whose molecule has a fluorine atom or a chlorine atom into the processing chamber and exposing surfaces of the deposits by removing a by-product generated so as to cover the surfaces of the deposits in removing the deposits.
    Type: Application
    Filed: May 30, 2008
    Publication date: December 11, 2008
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Hideharu Itatani, Kazuhiro Harada
  • Publication number: 20080264337
    Abstract: A substrate processing apparatus and a method for manufacturing a semiconductor device whereby foreign matter can be prevented from being adsorbed on the substrate, by suppressing agitation of foreign matter present in the processing chamber. The substrate processing apparatus comprises a processing chamber for processing a substrate; a processing gas feeding line for feeding a processing gas into the processing chamber; an inert gas feeding line for feeding an inert gas into the processing chamber; an inert gas vent line provided in the inert gas feeding line, for exhausting the inert gas fed into the inert gas feeding line without feeding the inert gas into the processing chamber; a first valve provided in the inert gas feeding line, on a downstream side of a part where the inert gas vent line is provided in the inert gas feeding line; a second valve provided in the inert gas vent line; and an exhaust line that exhausts an inside of the processing chamber.
    Type: Application
    Filed: March 19, 2008
    Publication date: October 30, 2008
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Atsushi Sano, Hideharu Itatani, Mitsuro Tanabe
  • Publication number: 20080032514
    Abstract: The ability to control a concentration ratio of a metal and silicon in a metal silicate film is improved, allowing a high-quality semiconductor device to be manufactured. A step is provided for supplying a first raw material, which contains a metal atom, and a second raw material, which contains a silicon atom and a nitrogen atom, into a processing chamber (4); and forming on a substrate (30) a metal silicate film containing the metal atom and silicon atom. A raw material supply ratio of the first and second raw materials is controlled in the step of forming a metal silicate film, thereby controlling a concentration ratio of the metal and silicon in the resulting metal silicate film.
    Type: Application
    Filed: November 29, 2005
    Publication date: February 7, 2008
    Applicant: Hitachi Kokusai Electric Inc.
    Inventors: Atsushi Sano, Sadayoshi Horii, Hideharu Itatani, Katsuhiko Yamamoto
  • Publication number: 20070264840
    Abstract: To prevent particles from generating by reducing a contact-gas area and improve a purge efficiency by reducing a flow passage capacity.
    Type: Application
    Filed: October 14, 2005
    Publication date: November 15, 2007
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Hideharu Itatani, Hidehiro Yanai, Sadayoshi Horii, Atsushi Sano
  • Publication number: 20070042581
    Abstract: To provide a manufacturing method of a semiconductor device and a substrate processing apparatus capable of easily controlling a nitrogen concentration distribution in a film containing a metal atom and a silicon atom, and manufacturing a high quality semiconductor device. The method comprises a step of forming a film containing the metal atom and the silicon atom on a substrate 30 in a reaction chamber 4, and performing a nitriding process for the film, wherein the film is formed by changing a silicon concentration at least in two stages in the step of forming a film.
    Type: Application
    Filed: January 21, 2005
    Publication date: February 22, 2007
    Applicant: Hitachi Kokusal Electric Inc.
    Inventors: Atsushi Sano, Sadayoshi Horii, Hideharu Itatani, Masayuki Asai