Patents by Inventor KATSUNORI FUNAKI

KATSUNORI FUNAKI 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: 20210183645
    Abstract: According to one aspect of the technique, there is provided a method of manufacturing a semiconductor device, including: (a) forming a first oxide layer by modifying a surface of a substrate at a first temperature with a plasma of a first oxygen-containing gas; and (b) forming a second oxide layer thicker than the first oxide layer by heating the substrate to a second temperature higher than the first temperature and modifying the surface of the substrate, on which the first oxide layer is formed, with a plasma of a second oxygen-containing gas.
    Type: Application
    Filed: February 25, 2021
    Publication date: June 17, 2021
    Inventors: Hiroto IGAWA, Masanori NAKAYAMA, Katsunori FUNAKI, Tatsushi UEDA, Yasutoshi TSUBOTA, Eiko TAKAMI, Yuichiro TAKESHIMA, Yuki YAMAKADO
  • Publication number: 20200402774
    Abstract: Described herein is a technique capable of suppressing sputtering on an inner peripheral surface of a process vessel when a process gas is plasma-excited in the process vessel. According to one aspect thereof, a substrate processing apparatus includes: a process vessel accommodating a process chamber where a process gas is excited into plasma; a gas supplier supplying the process gas into the process chamber; a coil wound around an outer peripheral surface of the process vessel and spaced apart therefrom, wherein a high frequency power is supplied to the coil; and an electrostatic shield disposed between the outer peripheral surface and the coil, wherein the electrostatic shield includes: a partition extending in a circumferential direction to partition between a part of the coil and the outer peripheral surface; and an opening extending in the circumferential direction and opened between another part of the coil and the outer peripheral surface.
    Type: Application
    Filed: September 8, 2020
    Publication date: December 24, 2020
    Inventors: Takeshi YASUI, Katsunori FUNAKI, Yasutoshi TSUBOTA, Koichiro HARADA
  • Patent number: 10796900
    Abstract: Described herein is a technique capable of improving electrical characteristics of a semiconductor device. According to the technique, there is provided a method of manufacturing a semiconductor device including: (a) generating oxygen and hydrogen active species; and (b) forming an oxide layer by supplying the oxygen and hydrogen active species to a substrate with a concave structure to subject a film on an inner surface of the concave structure to oxidation, wherein the oxide layer is formed in (b) such that a thickness of the oxide layer is greater on the inner surface than at an upper end portion of the concave structure by setting a ratio of a flow rate of the hydrogen active species to a total flow rate to a predetermined ratio greater than a first ratio at which a rate of forming the oxide layer is maximized at the upper end portion of the concave structure.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: October 6, 2020
    Assignee: Kokusai Electric Corporation
    Inventors: Yuichiro Takeshima, Masanori Nakayama, Katsunori Funaki, Yasutoshi Tsubota, Hiroto Igawa
  • Publication number: 20200219699
    Abstract: There is provided a plasma vessel in which a process gas is plasma-excited; a substrate process chamber which is in communication with the plasma vessel; a gas supply system supplying the process gas; and a coil installed to wind around an outer periphery of the plasma vessel and supplied with high-frequency power, wherein the coil is installed such that: a distance from an inner periphery of the coil to an inner periphery of the plasma vessel at a predetermined position on the coil is different from a distance from the inner periphery of the coil to the inner periphery of the plasma vessel at another position on the coil; and a distance from the inner periphery of the coil to the inner periphery of the plasma vessel at a position at which an amplitude of a standing wave of a voltage applied to the coil is maximized is maximized.
    Type: Application
    Filed: March 17, 2020
    Publication date: July 9, 2020
    Applicant: KOKUSAI ELECTRIC CORPORATION
    Inventors: Takeshi YASUI, Katsunori FUNAKI, Masaki MUROBAYASHI, Koichiro HARADA
  • Publication number: 20200211858
    Abstract: There is provided a technique that includes: loading a substrate having a metal film composed of a single metal element formed on a surface of the substrate into a process chamber; generating reactive species by plasma-exciting a processing gas containing hydrogen and oxygen; and modifying the metal film by supplying the reactive species to the substrate, wherein in the act of modifying the metal film, the metal film is modified such that a crystal grain size of the metal element constituting the metal film is larger than that before performing the act of modifying the metal film.
    Type: Application
    Filed: March 12, 2020
    Publication date: July 2, 2020
    Applicant: KOKUSAI ELECTRIC CORPORATION
    Inventors: Masanori NAKAYAMA, Katsunori FUNAKI, Tatsushi UEDA, Yasutoshi TSUBOTA, Yuichiro TAKESHIMA, Hiroto IGAWA, Yuki YAMAKADO
  • Publication number: 20200098587
    Abstract: There is provided a technique that includes: (a) loading a substrate including a base and a first film containing silicon and formed on the base into a process container; (b) converting a modifying gas containing helium into plasma to generate reactive species of helium; and (c) supplying the modifying gas containing the reactive species of helium to a surface of the substrate to respectively modify the first film and an interface layer of the base constituting an interface with the first film.
    Type: Application
    Filed: September 13, 2019
    Publication date: March 26, 2020
    Applicant: KOKUSAI ELECTRIC CORPORATION
    Inventors: Yuki YAMAKADO, Masanori NAKAYAMA, Katsunori FUNAKI, Tatsushi UEDA, Yasutoshi TSUBOTA, Eiko TAKAMI, Yuichiro TAKESHIMA, Hiroto IGAWA
  • Publication number: 20190355575
    Abstract: Described herein is a technique capable of improving electrical characteristics of a semiconductor device. According to the technique, there is provided a method of manufacturing a semiconductor device including: (a) generating oxygen and hydrogen active species; and (b) forming an oxide layer by supplying the oxygen and hydrogen active species to a substrate with a concave structure to subject a film on an inner surface of the concave structure to oxidation, wherein the oxide layer is formed in (b) such that a thickness of the oxide layer is greater on the inner surface than at an upper end portion of the concave structure by setting a ratio of a flow rate of the hydrogen active species to a total flow rate to a predetermined ratio greater than a first ratio at which a rate of forming the oxide layer is maximized at the upper end portion of the concave structure.
    Type: Application
    Filed: July 31, 2019
    Publication date: November 21, 2019
    Applicant: KOKUSAI ELECTRIC CORPORATION
    Inventors: Yuichiro TAKESHIMA, Masanori NAKAYAMA, Katsunori FUNAKI, Yasutoshi TSUBOTA, Hiroto IGAWA
  • Publication number: 20190348282
    Abstract: According to one aspect of the technique of the present disclosure, there is provided a method of manufacturing a semiconductor device including: (a) providing a semiconductor processing apparatus including a substrate process chamber, a coil and a substrate support; (b) placing a target substrate with a concave structure of a silicon film on a substrate support, wherein a deteriorated layer is formed on an inner surface of the concave structure by deterioration of a surface layer of the silicon film due to an etching process; (c) supplying an oxygen-containing gas into the substrate process chamber; (d) applying a high frequency power to the coil to generate plasma of the oxygen-containing gas; and (e) oxidizing, by the plasma, a surface of the silicon film exposed in the concave structure wherein the deteriorated layer is formed on the surface.
    Type: Application
    Filed: July 25, 2019
    Publication date: November 14, 2019
    Inventors: Yuichiro TAKESHIMA, Masanori NAKAYAMA, Katsunori FUNAKI, Yasutoshi TSUBOTA, Hiroto IGAWA
  • Publication number: 20190006481
    Abstract: Described herein is a technique capable of improving electrical characteristics of a polysilicon film while suppressing damage to an underlying silicon oxide film. According to the technique described herein, there is provided a there is provided a method of manufacturing a semiconductor device, including: (a) preparing a substrate including a silicon oxide film and a polysilicon film formed on the silicon oxide film, wherein the polysilicon film includes a contact surface contacting the silicon oxide film and an exposed surface facing the contact surface; and (b) supplying a reactive species generated by plasma excitation of a gas containing hydrogen and oxygen to the exposed surface of the polysilicon film.
    Type: Application
    Filed: September 7, 2018
    Publication date: January 3, 2019
    Inventors: Masanori NAKAYAMA, Yuichiro TAKESHIMA, Hiroto IGAWA, Katsunori FUNAKI
  • Patent number: 9059229
    Abstract: A substrate processing apparatus includes a substrate processing chamber including a plasma generation space where a plasma is generated and a substrate processing space where a substrate is placed during a substrate process; an inductive coupling structure outside the plasma generation space wherein a sum of electrical lengths of a coil of the inductive coupling structure and a waveform adjustment circuit connected to the coil is an integer multiple of a wavelength of an applied power; a substrate mounting table in the substrate processing space and supporting the substrate including grooves having high aspect ratios with a silicon-containing layer disposed thereon; a substrate transfer port at a wall of the substrate processing chamber; a substrate mounting table elevator moving the substrate mounting table upward/downward; an oxygen gas supply system to supply an oxygen-containing gas into the plasma generation space; and an exhaust unit exhausting gas from the substrate processing chamber.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: June 16, 2015
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Tadashi Terasaki, Masanori Nakayama, Mitsunori Takeshita, Katsunori Funaki
  • Publication number: 20140106573
    Abstract: A substrate processing apparatus includes a substrate processing chamber including a plasma generation space where a plasma is generated and a substrate processing space where a substrate is placed during a substrate process; an inductive coupling structure outside the plasma generation space wherein a sum of electrical lengths of a coil of the inductive coupling structure and a waveform adjustment circuit connected to the coil is an integer multiple of a wavelength of an applied power; a substrate mounting table in the substrate processing space and supporting the substrate including grooves having high aspect ratios with a silicon-containing layer disposed thereon; a substrate transfer port at a wall of the substrate processing chamber; a substrate mounting table elevator moving the substrate mounting table upward/downward; an oxygen gas supply system to supply an oxygen-containing gas into the plasma generation space; and an exhaust unit exhausting gas from the substrate processing chamber.
    Type: Application
    Filed: September 11, 2013
    Publication date: April 17, 2014
    Applicant: Hitachi Kokusai Electric Inc.
    Inventors: Tadashi TERASAKI, Masanori NAKAYAMA, Mitsunori TAKESHITA, Katsunori FUNAKI
  • Patent number: 8471477
    Abstract: A processing speed may be easily controlled over the wide range within the impedance variation range.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: June 25, 2013
    Assignee: Hitachi Kokusai Electric, Inc.
    Inventors: Masayuki Tomita, Katsunori Funaki, Shinji Yashima, Ryuichi Shimada
  • Publication number: 20110234100
    Abstract: A processing speed may be easily controlled over the wide range within the impedance variation range.
    Type: Application
    Filed: March 24, 2011
    Publication date: September 29, 2011
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Masayuki TOMITA, Katsunori FUNAKI, Shinji YASHIMA, Ryuichi SHIMADA
  • Publication number: 20030205202
    Abstract: It is an object of the present invention to provide a plasma CVD device in which it is possible to inhibit the formation of particles resulting from the adhesion of reaction by-products of poor adhesive strength around the upper electrode.
    Type: Application
    Filed: December 23, 1998
    Publication date: November 6, 2003
    Applicant: Kokusai Electric Co., LTD.
    Inventors: KATSUNORI FUNAKI, SHIN HIYAMA