Patents by Inventor Yasuhiro Morikawa

Yasuhiro Morikawa 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: 20230420220
    Abstract: A plasma processing apparatus according to the invention includes a chamber, an inner electrode, an outer electrode, a plasma generating power source, and a gas introduction part. The plasma generating power source applies alternating-current power to the outer electrode. The outer electrode includes a first electrode, a second electrode, and a third electrode. The plasma generating power source includes a first high-frequency power source, a second high-frequency power source, and a power splitter. The first high-frequency power source applies alternating-current power having a first frequency ?1 to the first electrode and the second electrode. The second high-frequency power source applies alternating-current power having a second frequency ?2 to the third electrode. A relationship of ?1>?2 is satisfied. The power splitter is configured to split the alternating-current power into the first electrode and the second electrode with a predetermined split ratio.
    Type: Application
    Filed: June 22, 2023
    Publication date: December 28, 2023
    Applicant: ULVAC, Inc.
    Inventors: Taichi SUZUKI, Yasuhiro MORIKAWA, Kenta DOI, Toshiyuki NAKAMURA
  • Publication number: 20220392746
    Abstract: A plasma processing device includes an inductively coupled plasma antenna including an input end and an output end, a series circuit including an additional inductor and a variable capacitor connected in series, and a controller that varies a capacitance of the variable capacitor. The input terminal is connected via an antenna matching device to an antenna power supply. The output terminal is connected to the additional inductor. The additional inductor is connected via the variable capacitor to ground.
    Type: Application
    Filed: May 31, 2022
    Publication date: December 8, 2022
    Inventors: Taichi Suzuki, Yasuhiro Morikawa, Kenta Doi, Toshiyuki Nakamura
  • Patent number: 11510320
    Abstract: A method of the invention is a method of processing a wiring substrate that includes a configuration in which conductors locally disposed on a substrate are coated with resin having inorganic members that form a filler and are dispersed in an organic member, the method including: removing the organic member from a surface layer side of the resin by use of an ashing method; and removing, by use of a wet cleaning method, the inorganic members remaining the surface layer side of the resin from which the organic member is removed.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: November 22, 2022
    Assignee: ULVAC, INC.
    Inventors: Muneyuki Sato, Yasuhiro Morikawa, Minoru Suzuki
  • Publication number: 20220344167
    Abstract: An etching method of the invention includes: a resist pattern-forming step of forming a resist layer on a target object, the resist layer being formed of a resin, the resist layer having a resist pattern; an etching step of etching the target object via the resist layer having the resist pattern; and a resist protective film-forming step of forming a resist protective film on the resist layer. The etching step is repetitively carried out multiple times. After the etching steps are repetitively carried out multiple times, the resist protective film-forming step is carried out.
    Type: Application
    Filed: April 25, 2022
    Publication date: October 27, 2022
    Inventors: Taichi SUZUKI, Yasuhiro MORIKAWA, Kenta DOI, Toshiyuki NAKAMURA
  • Publication number: 20220044938
    Abstract: A silicon dry etching method of the invention, includes: preparing a silicon substrate; forming a mask pattern having an opening on the silicon substrate; forming a deposition layer on the silicon substrate in accordance with the mask pattern while introducing a first gas; carrying out a dry etching process with respect to the silicon substrate in accordance with the mask pattern while introducing a second gas, and thereby forming a recess pattern on a surface of the silicon substrate; and carrying out an ashing process with respect to the silicon substrate while introducing a third gas.
    Type: Application
    Filed: August 3, 2021
    Publication date: February 10, 2022
    Applicant: ULVAC, Inc.
    Inventors: Kenta DOI, Toshiyuki SAKUISHI, Toshiyuki NAKAMURA, Yasuhiro MORIKAWA
  • Publication number: 20220002017
    Abstract: There is provided a filling packaging machine which does not cause poor sealing between a sealing tape and the inner surface of a tubular packaging material in a laterally sealed portion as formed by ultrasonic sealing. A filling packaging machine includes a tape attachment device, a vertical sealing device and a lateral sealing device. The tape attachment device attaches a predetermined-width portion of a sealing tape to one end of one surface of a web-like packaging material in such a manner that a first edge of both edges of the sealing tape, which is to be located on an overlapping portion side of a tubular packaging material when viewed from an inner step of an overlapping portion, will be disposed at a position displaced from an outer step of the overlapping portion when viewed in the thickness direction of the tubular packaging material.
    Type: Application
    Filed: September 26, 2019
    Publication date: January 6, 2022
    Applicants: SHIKOKU KAKOKI CO., LTD., NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Yasuhiro Morikawa, Seiji Sato, Hiroshi Sora, Kazuhiko Sase, Shigekazu Miyagawa
  • Publication number: 20200315021
    Abstract: A method of the invention is a method of processing a wiring substrate that includes a configuration in which conductors locally disposed on a substrate are coated with resin having inorganic members that form a filler and are dispersed in an organic member, the method including: removing the organic member from a surface layer side of the resin by use of an ashing method; and removing, by use of a wet cleaning method, the inorganic members remaining the surface layer side of the resin from which the organic member is removed.
    Type: Application
    Filed: November 30, 2017
    Publication date: October 1, 2020
    Inventors: Muneyuki SATO, Yasuhiro MORIKAWA, Minoru SUZUKI
  • Patent number: 10079133
    Abstract: A plasma processing device includes: a chamber; a flat-plate-shaped first electrode; a first high frequency power supply; a helical second electrode disposed outside the chamber and disposed to face the first electrode with a quartz plate forming an upper lid of the chamber therebetween; and a gas introducing unit, in which a second high frequency power supply and a third high frequency power supply are configured to be electrically connected to the second electrode, the second high frequency power supply being configured to apply an AC voltage of a second frequency to the second electrode, the third high frequency power supply being configured to apply an AC voltage of a third frequency to the second electrode, and the third frequency being higher than the second frequency; and two types of AC voltages are configured to be simultaneously applied.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: September 18, 2018
    Assignee: ULVAC, INC.
    Inventors: Takahide Murayama, Yasuhiro Morikawa, Toshiyuki Sakuishi
  • Publication number: 20170316917
    Abstract: A plasma processing device includes: a chamber; a flat-plate-shaped first electrode; a first high frequency power supply; a helical second electrode disposed outside the chamber and disposed to face the first electrode with a quartz plate forming an upper lid of the chamber therebetween; and a gas introducing unit, in which a second high frequency power supply and a third high frequency power supply are configured to be electrically connected to the second electrode, the second high frequency power supply being configured to apply an AC voltage of a second frequency to the second electrode, the third high frequency power supply being configured to apply an AC voltage of a third frequency to the second electrode, and the third frequency being higher than the second frequency; and two types of AC voltages are configured to be simultaneously applied.
    Type: Application
    Filed: January 8, 2016
    Publication date: November 2, 2017
    Inventors: Takahide MURAYAMA, Yasuhiro MORIKAWA, Toshiyuki SAKUISHI
  • Publication number: 20150200078
    Abstract: A method for etching a substrate with plasma, including: holding a substrate on a substrate stage; forming an annular zero magnetic field region lying along a circumferential direction of an inner side of a middle-stage coil of three stages of concentrically-arranged magnetic field coils; supplying-etching gas to an interior of a chamber main body; supplying high frequency power to a high-frequency antenna and an electrode to form an induced electric field in the zero magnetic field region to generate plasma; and etching the substrate with the plasma. Forming an annular zero magnetic field region includes forming the region in a state in which the chamber main body is internally inserted from an inner side of a lowermost stage coil of the magnetic field coils to the inner side of the middle-stage coil so that the zero magnetic field region is formed near an inner surface of the top part.
    Type: Application
    Filed: March 27, 2015
    Publication date: July 16, 2015
    Inventor: Yasuhiro MORIKAWA
  • Patent number: 8993449
    Abstract: There is provided an etching method which can form trenches or via holes having desired aspect ratios and shapes in a to-be-processed object made of silicon. The etching method includes: a hydrogen halide-containing gas-based etching step of etching a silicon substrate by introducing a hydrogen halide-containing gas into a vacuum chamber; a fluorine-containing gas-based etching step of etching the silicon substrate by introducing a fluorine-containing gas into the vacuum chamber; a protective film formation step forming a protective film on the silicon substrate by sputtering a solid material; and a protective film removal step of removing part of the protective film by applying radio frequency bias power to a substrate electrode. The fluorine-containing gas-based etching step, the protective film formation step, and the protective film removal step are repeatedly performed in this order.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: March 31, 2015
    Assignee: Ulvac, Inc.
    Inventors: Yasuhiro Morikawa, Koukou Suu
  • Publication number: 20120186746
    Abstract: A plasma etching apparatus includes a magnetic field forming section, which has concentrically disposed magnetic field coils at least at three levels, and which forms, on the inner side of the magnetic field coil at the intermediate level, an annular zero magnetic field region along the circumferential direction of the magnetic field coils. A chamber main body including the top portion is interpolated on the inner side of the magnetic field coils and houses the substrate below the zero magnetic field region. A gas supply section supplies an etching gas to the inside of the chamber main body. A high frequency antenna forms an induction electric field in the zero magnetic field region and generates plasma of the etching gas. An electrode is disposed above the top portion of the chamber main body, and is electrostatically coupled with the plasma generated in the chamber main body.
    Type: Application
    Filed: August 23, 2010
    Publication date: July 26, 2012
    Applicant: ULVAC, INC.
    Inventor: Yasuhiro Morikawa
  • Publication number: 20120171869
    Abstract: There is provided an etching method which can form trenches or via holes having desired aspect ratios and shapes in a to-be-processed object made of silicon. The etching method includes: a hydrogen halide-containing gas-based etching step of etching a silicon substrate by introducing a hydrogen halide-containing gas into a vacuum chamber; a fluorine-containing gas-based etching step of etching the silicon substrate by introducing a fluorine-containing gas into the vacuum chamber; a protective film formation step forming a protective film on the silicon substrate by sputtering a solid material; and a protective film removal step of removing part of the protective film by applying radio frequency bias power to a substrate electrode. The fluorine-containing gas-based etching step, the protective film formation step, and the protective film removal step are repeatedly performed in this order.
    Type: Application
    Filed: August 12, 2010
    Publication date: July 5, 2012
    Inventors: Yasuhiro Morikawa, Koukou Suu
  • Patent number: 8153926
    Abstract: An etching method and an etching system are adapted to produce a high etch selectivity for a mask, an excellent anisotropic profile and a large etching depth. An etching system according to the invention comprises a floating electrode arranged vis-à-vis a substrate electrode in a vacuum chamber and held in a floating state in terms of electric potential, a material arranged at the side of the floating electrode facing the substrate electrode to form an anti-etching film and a control unit for intermittently applying high frequency power to the floating electrode.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: April 10, 2012
    Assignee: ULVAC, Inc.
    Inventors: Yasuhiro Morikawa, Toshio Hayashi, Koukou Suu
  • Patent number: 8125069
    Abstract: A method for manufacturing a semiconductor device comprises dry-etching a thin film using a resist mask carrying patterns in which at least one of the width of each pattern and the space between neighboring two patterns ranges from 32 to 130 nm using a halogenated carbon-containing compound gas with the halogen being at least two members selected from the group consisting of F, I and Br. The ratio of at least one of I and Br is not more than 26% of the total amount of the halogen atoms as expressed in terms of the atomic compositional ratio to transfer the patterns onto the thin film. Such etching of a thin film avoids causing damage to the resist mask used. The resulting thin film carrying the transferred patterns is used as a mask for subjecting the underlying material to dry-etching.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: February 28, 2012
    Assignee: Philtech Inc.
    Inventors: Toshio Hayashi, Yasuhiro Morikawa, Michio Ishikawa, Yuji Furumura, Naomi Mura
  • Publication number: 20110180388
    Abstract: [Object] To provide a plasma processing method and a plasma processing apparatus having high coverage property and excellent in-plane uniformity. [Solving Means] When sputtered particles that are beat out from a target by plasma are deposited on a surface of a substrate, those sputtered particles are decomposed by the plasma to thus generate active species, and then deposited on the surface of the substrate. Accordingly, a deposition mode similar to plasma CVD is obtained, and sputtering deposition with high coverage property and excellent in-plane uniformity is enabled. Particularly, since a high-frequency electric field and a ring-shaped magnetic neutral line are used for a plasma source, it is possible to efficiently generate plasma that has extremely high density in a region in which a magnetic field is zero. That plasma realizes plasma processing with high in-plane uniformity by arbitrarily adjusting a formation position and a size of the magnetic neutral line.
    Type: Application
    Filed: August 5, 2008
    Publication date: July 28, 2011
    Applicant: ULVAC, INC.
    Inventors: Yasuhiro Morikawa, Koukou Suu
  • Publication number: 20110117742
    Abstract: [Object] To provide a plasma processing method capable of maintaining a uniform in-plane distribution from the start to the end of etching by optimizing etching conditions. [Solving Means] In a plasma processing method according to the present invention, the process of etching a substrate (W) having a mask pattern formed on a surface thereof by using plasma formed in a vacuum vessel (21) and the process of forming a protective film on a side wall portion of an etching pattern formed on the substrate (W) by sputtering a target material (30) disposed in the vacuum vessel (21) by using the plasma are alternately repeated. In the plasma processing method, a uniform in-plane distribution is maintained over a time period from the start to the end of plasma processing by changing a radius of a magnetic neutral line (25) in accordance with progress of the plasma processing including the etching processing and the processing of forming a protective film for the substrate (W).
    Type: Application
    Filed: March 5, 2009
    Publication date: May 19, 2011
    Applicant: ULVAC, INC.
    Inventors: Yasuhiro Morikawa, Koukou Suu, Takahide Murayama
  • Publication number: 20100270654
    Abstract: A method for manufacturing a semiconductor device comprises dry-etching a thin film using a resist mask carrying patterns in which at least one of the width of each pattern and the space between neighboring two patterns ranges from 32 to 130 nm using a halogenated carbon-containing compound gas with the halogen being at least two members selected from the group consisting of F, I and Br. The ratio of at least one of I and Br is not more than 26% of the total amount of the halogen atoms as expressed in terms of the atomic compositional ratio to transfer the patterns onto the thin film. Such etching of a thin film avoids causing damage to the resist mask used. The resulting thin film carrying the transferred patterns is used as a mask for subjecting the underlying material to dry-etching.
    Type: Application
    Filed: July 6, 2010
    Publication date: October 28, 2010
    Inventors: Toshio HAYASHI, Yasuhiro MORIKAWA, Michio ISHIKAWA, Yuji FURUMURA, Naomi MURA
  • Publication number: 20100219158
    Abstract: A method for dry etching an interlayer insulating film with an ArF resist or KrF resist thereon comprises dry etching fine features into the interlayer insulating film with an etching gas in such a manner as to form a polymer film on the ArF or KrF resist from the etching gas, wherein the etching gas is introduced under a pressure of 0.5 Pa or less, and wherein a Fourier transform infrared spectrum of the polymer film includes a C—F bond peak at about 1200 cm?1, a C—N bond peak at about 1600 cm?1, and a C—H bond peak at about 3300 cm?1.
    Type: Application
    Filed: May 16, 2007
    Publication date: September 2, 2010
    Inventors: Yasuhiro Morikawa, Koukou Suu
  • Publication number: 20100203737
    Abstract: An etching method and an etching system are adapted to produce a high etch selectivity for a mask, an excellent anisotropic profile and a large etching depth. An etching system according to the invention comprises a floating electrode arranged vis-à-vis a substrate electrode in a vacuum chamber and held in a floating state in terms of electric potential, a material arranged at the side of the floating electrode facing the substrate electrode to form an anti-etching film and a control unit for intermittently applying high frequency power to the floating electrode.
    Type: Application
    Filed: March 31, 2010
    Publication date: August 12, 2010
    Applicant: ULVAC, INC.
    Inventors: Yasuhiro MORIKAWA, Toshio HAYASHI, Koukou SUU