Patents by Inventor Arito Ogawa

Arito Ogawa 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: 9508555
    Abstract: To improve quality or manufacturing throughput of a semiconductor device, a method includes supplying a source gas to a substrate in a process chamber; exhausting an inside of the process chamber; supplying a reaction gas to the substrate; and exhausting the inside of the process chamber, wherein the source gas and/or the reaction gas is supplied in temporally separated pulses in the supply of the source gas and/or in the supply of the reaction gas. Then, the source gas and/or the reaction gas is supplied in temporally separated pulses to form a film during a gas supply time determined by a concentration distribution of by-products formed on a surface of the substrate.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: November 29, 2016
    Assignee: Hitachi Kokusai Electric, Inc.
    Inventors: Yukinao Kaga, Arito Ogawa, Atsuro Seino, Atsuhiko Ashitani, Ryohei Maeno, Masanori Sakai
  • Publication number: 20160343573
    Abstract: Provided is a semiconductor device including a metal film which can be formed with lower costs but still manage 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 on the insulating film. The metal film includes a stacked structure of: a first metal film disposed on the insulating film to directly contact the insulating film; a second metal film disposed on the first metal film to directly contact the first metal film; and the first metal film disposed on the second metal film to directly contact the second metal film, the second metal film having a work function greater than 4.8 eV and being different from the first metal film in material, wherein an oxidation resistance of the first metal film is greater than that of the second metal film.
    Type: Application
    Filed: August 4, 2016
    Publication date: November 24, 2016
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Sadayoshi HORII, Arito OGAWA, Hideharu ITATANI
  • Publication number: 20160305017
    Abstract: A method of manufacturing a semiconductor device, includes: alternately performing (i) a first step of alternately supplying a first raw material containing a first metal element and a halogen element and a second raw material containing a second metal element and carbon to a substrate by a first predetermined number of times, and (ii) a second step of supplying a nitridation raw material to the substrate, by a second predetermined number of times, wherein alternating the first and second steps forms a metal carbonitride film containing the first metal element having a predetermined thickness on the substrate.
    Type: Application
    Filed: June 23, 2016
    Publication date: October 20, 2016
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Arito OGAWA, Tsuyoshi TAKEDA
  • Patent number: 9472637
    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 on the insulating film to directly contact the insulating film, the metal film including a laminated structure where a first metal film and a second metal film are alternately and repeatedly laminated, wherein the second metal film has a work function different from that of the first metal film and is different from the first metal film in material, and an oxidation resistance of the first metal film is greater than that of the second metal film.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: October 18, 2016
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Sadayoshi Horii, Arito Ogawa, Hideharu Itatani
  • Publication number: 20160293421
    Abstract: A method of manufacturing a semiconductor device includes forming a metal-containing film including a first element that is a metal element and a second element by performing a predetermined number of times in a time-division manner a cycle of supplying an organic metal source gas containing the first element to a substrate, supplying a halogen-based metal source gas containing the first element to the substrate and supplying a reaction gas, which contains the second element and which reacts with the first element, to the substrate, wherein a value of film stress of the metal-containing film is controlled by controlling at least one value of a supply flow rate and a supply time of the organic metal source gas in the act of supplying an organic metal source gas.
    Type: Application
    Filed: March 21, 2016
    Publication date: October 6, 2016
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Kazuhiro HARADA, Arito OGAWA, Motomu DEGAI, Masahito KITAMURA, Hiroshi ASHIHARA
  • Publication number: 20160284552
    Abstract: A method of manufacturing a semiconductor device includes forming a seed layer containing a metal element on a substrate by performing a first process and a second process in a time-division manner. The first process supplying and exhausting organic metal-containing gas containing the metal element to the substrate. The second process supplying and exhausting inorganic metal-containing gas containing the metal element to the substrate, and forming a metal-containing nitride film on the substrate on which the seed layer is formed using the seed layer as a seed by performing a third process and a fourth process in a time-division manner. The third process supplying and exhausting the inorganic metal-containing gas to the substrate. The fourth process supplying and exhausting nitrogen-containing gas to the substrate.
    Type: Application
    Filed: March 15, 2016
    Publication date: September 29, 2016
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: Arito OGAWA
  • Patent number: 9437704
    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 on the insulating film. The metal film includes a stacked structure of: a first metal film disposed on the insulating film to directly contact the insulating film; a second metal film disposed on the first metal film to directly contact the first metal film; and the first metal film disposed on the second metal film to directly contact the second metal film, the second metal film having a work function greater than 4.8 eV and being different from the first metal film in material, wherein an oxidation resistance of the first metal film is greater than that of the second metal film.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: September 6, 2016
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Sadayoshi Horii, Arito Ogawa, Hideharu Itatani
  • Patent number: 9425039
    Abstract: Provided is a technique of controlling a work function of a metal film. A composite metal nitride film is formed on a substrate present in a process chamber by alternately supplying a first source and a second source to the substrate, wherein the first source contains a first metal element, the second source contains an ethyl ligand and a second metal element that is different from the first metal element, and a bond between the second metal element and a nitrogen element in the composite metal nitride film has crystallinity.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: August 23, 2016
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Kazuhiro Harada, Arito Ogawa
  • Patent number: 9406520
    Abstract: A method of manufacturing a semiconductor device, includes: alternately performing (i) a first step of alternately supplying a first raw material containing a first metal element and a halogen element and a second raw material containing a second metal element and carbon to a substrate by a first predetermined number of times, and (ii) a second step of supplying a nitridation raw material to the substrate, by a second predetermined number of times, wherein alternating the first and second steps forms a metal carbonitride film containing the first metal element having a predetermined thickness on the substrate.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: August 2, 2016
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Arito Ogawa, Tsuyoshi Takeda
  • Publication number: 20160196978
    Abstract: A method for manufacturing a semiconductor device, including: forming a metal carbide film including a first metal element and a second metal element on a substrate, by time-divisionally performing, supplying a first precursor gas containing the first metal element and not containing carbon to the substrate, supplying a second precursor gas containing the second metal element differing from the first metal element and not containing carbon to the substrate, and supplying a reaction gas containing carbon to the substrate.
    Type: Application
    Filed: March 11, 2016
    Publication date: July 7, 2016
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Yukinao KAGA, Arito OGAWA
  • Patent number: 9378964
    Abstract: A method of manufacturing a semiconductor device, includes: alternately performing (i) a first step of alternately supplying a first raw material containing a first metal element and a halogen element and a second raw material containing a second metal element and carbon to a substrate by a first predetermined number of times, and (ii) a second step of supplying a nitridation raw material to the substrate, by a second predetermined number of times, wherein alternating the first and second steps forms a metal carbonitride film containing the first metal element having a predetermined thickness on the substrate.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: June 28, 2016
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Arito Ogawa, Tsuyoshi Takeda
  • Patent number: 9368358
    Abstract: A method of manufacturing a semiconductor device includes: (a) supplying a halogen-based source gas containing a first element to a substrate; (b) supplying a reaction gas containing a second element to react with the first element to the substrate; (c) forming a first layer containing the first element and the second element by time-dividing and performing (a) and (b) a predetermined number of times; (d) supplying an organic source gas containing the first element to the substrate; (e) supplying the reaction gas to the substrate; (f) forming a second layer containing the first element and the second element by time-dividing and performing (d) and (e) a predetermined number of times; and (g) forming a thin film containing the first element and the second element on the substrate by time-dividing and performing (c) and (f) a predetermined number of times.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: June 14, 2016
    Assignee: Hitachi Kokusai Electric, Inc.
    Inventors: Kazuhiro Harada, Arito Ogawa, Motomu Degai, Masahito Kitamura, Hiroshi Ashihara
  • Patent number: 9355850
    Abstract: A method of manufacturing a semiconductor device, includes: alternately performing (i) a first step of alternately supplying a first raw material containing a first metal element and a halogen element and a second raw material containing a second metal element and carbon to a substrate by a first predetermined number of times, and (ii) a second step of supplying a nitridation raw material to the substrate, by a second predetermined number of times, wherein alternating the first and second steps forms a metal carbonitride film containing the first metal element having a predetermined thickness on the substrate.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: May 31, 2016
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Arito Ogawa, Tsuyoshi Takeda
  • Publication number: 20160093508
    Abstract: The present invention provides a technology that includes: forming an intermediate film on a substrate having an insulating film formed thereon; and forming a metal film on the intermediate film. The intermediate film is more susceptible to oxidation than the metal film and has a smaller thickness than the metal film.
    Type: Application
    Filed: September 18, 2015
    Publication date: March 31, 2016
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: Arito OGAWA
  • Publication number: 20160079070
    Abstract: A method of manufacturing a semiconductor device includes forming a film on a substrate by performing a predetermined number times a cycle including: supplying a first process gas to the substrate; and supplying a second process gas to the substrate, wherein the act of supplying the first process gas and the supplying the second process gas are performed in a state where the substrate is maintained at a predetermined temperature of room temperature or more and 450 degrees C. or less; and a third process gas, which reacts with byproducts produced by a reaction of the first process gas and the second process gas, is supplied to the substrate simultaneously with at least one of the act of supplying the first process gas or the act of supplying the second process gas.
    Type: Application
    Filed: September 1, 2015
    Publication date: March 17, 2016
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Arito OGAWA, Yuji TAKEBAYASHI
  • Publication number: 20160056044
    Abstract: A method of manufacturing a semiconductor device includes: (a) supplying a halogen-based source gas containing a first element to a substrate; (b) supplying a reaction gas containing a second element to react with the first element to the substrate; (c) forming a first layer containing the first element and the second element by time-dividing and performing (a) and (b) a predetermined number of times; (d) supplying an organic source gas containing the first element to the substrate; (e) supplying the reaction gas to the substrate; (f) forming a second layer containing the first element and the second element by time-dividing and performing (d) and (e) a predetermined number of times; and (g) forming a thin film containing the first element and the second element on the substrate by time-dividing and performing (c) and (f) a predetermined number of times.
    Type: Application
    Filed: August 21, 2015
    Publication date: February 25, 2016
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Kazuhiro HARADA, Arito OGAWA, Motomu DEGAI, Masahito KITAMURA, Hiroshi ASHIHARA
  • Publication number: 20150340226
    Abstract: A method of manufacturing a semiconductor device by processing a substrate by supplying a processing space with a gas dispersed in a buffer space disposed at an upstream side of the processing space is provided. The method includes (a) transferring the substrate into the processing space while exhausting a transfer space of the substrate by a first vacuum pump; (b) closing a first valve disposed at a downstream side of the first vacuum pump; (c) supplying the gas into the processing space via the buffer space; and (d) exhausting the buffer space through an exhaust pipe connected to a downstream side of the first valve.
    Type: Application
    Filed: July 21, 2015
    Publication date: November 26, 2015
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Hiroshi ASHIHARA, Arito OGAWA
  • Patent number: 9190281
    Abstract: The method of manufacturing a semiconductor device in accordance with the present invention provides a metal-containing film capable of adjusting a work function. The including: (a) alternately supplying a first source containing a first metal element and a halogen element and a second source containing a second metal element different from the first metal element and at least one selected from the group consisting of a ligand of a methyl group, a ligand of an ethyl group and a ligand of a cyclopenta-based group onto a substrate in a process chamber to form a composite metal-containing film on the substrate; and (b) alternately supplying a third source containing a third metal element and a fourth source containing nitrogen onto the substrate in the process chamber to form a metal nitride film on the composite metal-containing film.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: November 17, 2015
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Kazuhiro Harada, Arito Ogawa, Hiroshi Ashihara
  • Publication number: 20150325447
    Abstract: Provided is a technique of adjusting a work function. A method of manufacturing a semiconductor device includes forming a film having a predetermined thickness and containing a first metal element, carbon and nitrogen on a substrate by: (a) forming a first layer containing the first metal element and carbon by supplying a metal-containing gas containing the first metal element and a carbon-containing gas to the substrate M times and (b) forming a second layer containing the first metal element, carbon and nitrogen by supplying a nitrogen-containing gas to the substrate having the first layer formed thereon N times to nitride the first layer, wherein M and N are selected in a manner that a work function of the film has a predetermined value (where M and N are natural numbers).
    Type: Application
    Filed: July 17, 2015
    Publication date: November 12, 2015
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Arito OGAWA, Kazuhiro HARADA, Yukinao KAGA, Hideharu ITATANI, Hiroshi ASHIHARA
  • Publication number: 20150279663
    Abstract: Provided is a technique of controlling a work function of a metal film. A composite metal nitride film is formed on a substrate present in a process chamber by alternately supplying a first source and a second source to the substrate, wherein the first source contains a first metal element, the second source contains an ethyl ligand and a second metal element that is different from the first metal element, and a bond between the second metal element and a nitrogen element in the composite metal nitride film has crystallinity.
    Type: Application
    Filed: March 24, 2015
    Publication date: October 1, 2015
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Kazuhiro Harada, Arito OGAWA