Patents by Inventor Tatsuo HIRASAWA

Tatsuo HIRASAWA 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: 11742190
    Abstract: A sputtering apparatus includes a first target and a second target that emit sputter particles, a substrate support configured to support a substrate, and a slit plate disposed between the first and the second targets and the substrate and having a slit unit through which the sputter particles pass. The slit unit includes a first slit to the first and the second target side and a second slit to the substrate side. The second slit has a first protrusion and a second protrusion protruding toward the center of the second slit. When the slit unit is viewed from the first target, the first protrusion is hidden. When the slit unit is viewed from the second target, the second protrusion is hidden.
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: August 29, 2023
    Assignee: Tokyo Electron Limited
    Inventors: Einstein Noel Abarra, Hiroyuki Toshima, Shota Ishibashi, Hiroyuki Iwashita, Tatsuo Hirasawa, Masato Shinada
  • Patent number: 11479848
    Abstract: A film forming apparatus includes a target holder that holds a target facing a substrate and extending in a predetermined direction on a horizontal plane, a magnet unit including a pair of magnet assemblies each having magnets and disposed at a back side of the target holder, a pair of shielding members disposed between the target and the substrate to extend from the target toward the substrate, and a moving mechanism configured to reciprocate the magnet unit between one end and the other end in the predetermined direction. The magnet assemblies are arranged along the predetermined direction, and each of the shielding members is disposed, in plan view, on a boundary line between a first region where only one of the magnet assemblies passes during a reciprocating motion of the magnet unit and a second region where both of the magnet assemblies pass therethrough during the reciprocating motion.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: October 25, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Shota Ishibashi, Hiroyuki Toshima, Hiroyuki Iwashita, Tatsuo Hirasawa
  • Publication number: 20220044920
    Abstract: A sputtering apparatus includes a first target and a second target that emit sputter particles, a substrate support configured to support a substrate, and a slit plate disposed between the first and the second targets and the substrate and having a slit unit through which the sputter particles pass. The slit unit includes a first slit to the first and the second target side and a second slit to the substrate side. The second slit has a first protrusion and a second protrusion protruding toward the center of the second slit. When the slit unit is viewed from the first target, the first protrusion is hidden. When the slit unit is viewed from the second target, the second protrusion is hidden.
    Type: Application
    Filed: July 29, 2021
    Publication date: February 10, 2022
    Inventors: Einstein Noel ABARRA, Hiroyuki TOSHIMA, Shota ISHIBASHI, Hiroyuki IWASHITA, Tatsuo HIRASAWA, Masato SHINADA
  • Patent number: 11158492
    Abstract: A film forming apparatus for forming a film by reactive sputtering includes a processing chamber, a sputter mechanism, a sputtered particle shielding member, a reaction chamber, a substrate support, a substrate moving mechanism, a sputtered particle passage hole, and a reactive gas introducing unit. While moving a substrate by the substrate moving mechanism, sputtered particles, that are released to the discharge space by the sputter mechanism and pass through the sputtered particle passage hole to be injected to the reaction chamber, are reacted with a reactive gas introduced into the reaction chamber, and a reactive sputtering film generated by the reaction is formed on the substrate.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: October 26, 2021
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Hiroyuki Toshima, Hiroyuki Iwashita, Tatsuo Hirasawa
  • Publication number: 20210305032
    Abstract: There is provided a substrate processing method of a substrate processing apparatus. The substrate processing apparatus includes at least two targets, magnet-moving mechanisms disposed in one-to-one correspondence with the at least two targets, each of the magnet-moving mechanisms being configured to reciprocate a magnet in a first direction on a back surface of each target, and a substrate moving mechanism configured to move a substrate in a second direction orthogonal to the first direction. The method includes causing the magnet-moving mechanisms to reciprocate the magnets at different phases with each other.
    Type: Application
    Filed: March 19, 2021
    Publication date: September 30, 2021
    Inventors: Shota ISHIBASHI, Hiroyuki TOSHIMA, Hiroyuki IWASHITA, Tatsuo HIRASAWA
  • Publication number: 20210296103
    Abstract: An example of a sputtering apparatus comprises a first target and a second target that emit sputter particles, a substrate support configured to support a substrate, a shielding plate disposed between the first and the second target and the substrate and having a through-hole through which the sputter particles pass, and an obstructing mechanism. The through-hole has a first opening region through which the sputter particles emitted from the fit target pass and a second opening region through which the sputter particles emitted from the second target pass, and the obstructing mechanism is configured to obstruct the sputter particles emitted from the first target in passing through the second opening region and the sputter particles emitted in the second target from passing through the first opening region.
    Type: Application
    Filed: March 19, 2021
    Publication date: September 23, 2021
    Inventors: Shota ISHIBASHI, Tatsuo HIRASAWA, Hiroyuki TOSHIMA, Hiroyuki IWASHITA
  • Publication number: 20210207261
    Abstract: A film forming apparatus includes a target holder that holds a target facing a substrate and extending in a predetermined direction on a horizontal plane, a magnet unit including a pair of magnet assemblies each having magnets and disposed at a back side of the target holder, a pair of shielding members disposed between the target and the substrate to extend from the target toward the substrate, and a moving mechanism configured to reciprocate the magnet unit between one end and the other end in the predetermined direction. The magnet assemblies are arranged along the predetermined direction, and each of the shielding members is disposed, in plan view, on a boundary line between a first region where only one of the magnet assemblies passes during a reciprocating motion of the magnet unit and a second region where both of the magnet assemblies pass therethrough during the reciprocating motion.
    Type: Application
    Filed: January 7, 2021
    Publication date: July 8, 2021
    Inventors: Shota ISHIBASHI, Hiroyuki TOSHIMA, Hiroyuki IWASHITA, Tatsuo HIRASAWA
  • Publication number: 20200043711
    Abstract: A film forming apparatus for forming a film by reactive sputtering includes a processing chamber, a sputter mechanism, a sputtered particle shielding member, a reaction chamber, a substrate support, a substrate moving mechanism, a sputtered particle passage hole, and a reactive gas introducing unit. While moving a substrate by the substrate moving mechanism, sputtered particles, that are released to the discharge space by the sputter mechanism and pass through the sputtered particle passage hole to be injected to the reaction chamber, are reacted with a reactive gas introduced into the reaction chamber, and a reactive sputtering film generated by the reaction is formed on the substrate.
    Type: Application
    Filed: July 25, 2019
    Publication date: February 6, 2020
    Inventors: Hiroyuki Toshima, Hiroyuki Iwashita, Tatsuo Hirasawa
  • Patent number: 10309005
    Abstract: A deposition device according to one embodiment includes a processing container. A mounting table is installed inside the processing container, and a metal target is installed above the mounting table. Further, a head is configured to inject an oxidizing gas toward the mounting table. This head is configured to move between a first region that is defined between the metal target and a mounting region where a target object is mounted on the mounting table and a second region spaced apart from a space defined between the metal target and the mounting region.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: June 4, 2019
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Yasuhiko Kojima, Hiroshi Sone, Atsushi Gomi, Kanto Nakamura, Toru Kitada, Yasunobu Suzuki, Yusuke Suzuki, Koichi Takatsuki, Tatsuo Hirasawa, Keisuke Sato, Chiaki Yasumuro, Atsushi Shimada
  • Patent number: 10189230
    Abstract: A method for forming a copper film is provided. In the method, a base film that is a titanium nitride film, a tungsten film or a tungsten nitride film is formed along a surface of an insulating film of an object. A copper film is formed on the base film of the object cooled to a temperature of 209 K or less.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: January 29, 2019
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Hiroyuki Toshima, Atsushi Shimada, Tatsuo Hirasawa, Tatsuo Hatano, Shinji Furukawa
  • Publication number: 20180001597
    Abstract: A method for forming a copper film is provided. In the method, a base film that is a titanium nitride film, a tungsten film or a tungsten nitride film is formed along a surface of an insulating film of an object. A copper film is formed on the base film of the object cooled to a temperature of 209 K or less.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 4, 2018
    Inventors: Hiroyuki TOSHIMA, Atsushi SHIMADA, Tatsuo HIRASAWA, Tatsuo HATANO, Shinji FURUKAWA
  • Publication number: 20160251746
    Abstract: A deposition device according to one embodiment includes a processing container. A mounting table is installed inside the processing container, and a metal target is installed above the mounting table. Further, a head is configured to inject an oxidizing gas toward the mounting table. This head is configured to move between a first region that is defined between the metal target and a mounting region where a target object is mounted on the mounting table and a second region spaced apart from a space defined between the metal target and the mounting region.
    Type: Application
    Filed: August 28, 2014
    Publication date: September 1, 2016
    Inventors: Yasuhiko KOJIMA, Hiroshi SONE, Atsushi GOMI, Kanto NAKAMURA, Toru KITADA, Yasunobu SUZUKI, Yusuke SUZUKI, Koichi TAKATSUKI, Tatsuo HIRASAWA, Keisuke SATO, Chiaki YASUMURO, Atsushi SHIMADA
  • Patent number: 9406557
    Abstract: Provided is a method of forming a copper (Cu) wiring in a recess formed to have a predetermined pattern in an insulating film formed on a surface of a substrate. The method includes: forming a barrier film at least on a surface of the recess, the barrier film serving as a barrier for blocking diffusion of Cu; forming a Ru film on the barrier film by Chemical Mechanical Deposition (CVD); forming a Cu alloy film on the Ru film by Physical Vapor Deposition (PVD) to bury the recess; forming a Cu wiring using the Cu alloy film buried in the recess; and forming a dielectric film on the Cu wiring.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: August 2, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Osamu Yokoyama, Cheonsoo Han, Takashi Sakuma, Chiaki Yasumuro, Tatsuo Hirasawa, Tadahiro Ishizaka, Kenji Suzuki
  • Patent number: 9406558
    Abstract: Cu wiring fabrication method for fabricating Cu wiring with respect to substrate having interlayer dielectric film having trench formed thereon, includes: forming barrier film on surface of the trench; forming Ru film on surface of the barrier film by CVD; burying the trench by forming Cu film or Cu alloy film on the Ru film; forming Cu film or Cu alloy film at corners of bottom of the trench while re-sputtering the formed Cu film or Cu alloy film in a condition where first formed Cu film or Cu alloy film re-sputtered by an ion action of the plasma generation gas; and subsequently burying the Cu film or the Cu alloy film in the trench in condition where the Cu film or the Cu alloy film is formed on field portion of the substrate, and reflows in the trench by an ion action of the plasma generation gas.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: August 2, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Tadahiro Ishizaka, Tatsuo Hirasawa, Takashi Sakuma, Osamu Yokoyama
  • Patent number: 9253862
    Abstract: In a plasma processing method, plasma processing is performed in a state where the object is attracted and held on the electrostatic chuck by applying a first voltage as an application voltage thereto and a thermal conduction gas is supplied to a gap between the electrostatic chuck and the object. The application voltage is decreased while stopping the supply of the thermal conduction gas and exhausting the thermal conduction gas remaining between the electrostatic chuck and the object upon completion of the plasma processing. The object is separated from the electrostatic chuck by setting the application voltage to the electrostatic chuck to zero after the application voltage is decreased.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: February 2, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Tatsuo Hirasawa, Osamu Yokoyama, Chiaki Yasumuro, Toshiaki Fujisato, Ryota Yoshida, Takashi Sakuma, Cheonsoo Han
  • Publication number: 20150332961
    Abstract: Cu wiring fabrication method for fabricating Cu wiring with respect to substrate having interlayer dielectric film having trench formed thereon, includes: forming barrier film on surface of the trench; forming Ru film on surface of the barrier film by CVD; burying the trench by forming Cu film or Cu alloy film on the Ru film; forming Cu film or Cu alloy film at corners of bottom of the trench while re-sputtering the formed Cu film or Cu alloy film in a condition where first formed Cu film or Cu alloy film re-sputtered by an ion action of the plasma generation gas; and subsequently burying the Cu film or the Cu alloy film in the trench in condition where the Cu film or the Cu alloy film is formed on field portion of the substrate, and reflows in the trench by an ion action of the plasma generation gas.
    Type: Application
    Filed: May 1, 2015
    Publication date: November 19, 2015
    Inventors: Tadahiro ISHIZAKA, Tatsuo HIRASAWA, Takashi SAKUMA, Osamu YOKOYAMA
  • Publication number: 20150240344
    Abstract: A ruthenium film forming method includes: placing a target substrate in a processing container; supplying ruthenium carbonyl gas together with CO gas as a carrier gas into the processing container, the ruthenium carbonyl gas being generated from solid-state ruthenium carbonyl; supplying additional CO gas into the processing container; and forming a ruthenium film on the target substrate by decomposing the ruthenium carbonyl gas.
    Type: Application
    Filed: February 16, 2015
    Publication date: August 27, 2015
    Inventors: Tadahiro ISHIZAKA, Takashi SAKUMA, Tatsuo HIRASAWA
  • Publication number: 20150004784
    Abstract: Provided is a method of forming a copper (Cu) wiring in a recess formed to have a predetermined pattern in an insulating film formed on a surface of a substrate. The method includes: forming a barrier film at least on a surface of the recess, the barrier film serving as a barrier for blocking diffusion of Cu; forming a Ru film on the barrier film by Chemical Mechanical Deposition (CVD); forming a Cu alloy film on the Ru film by Physical Vapor Deposition (PVD) to bury the recess; forming a Cu wiring using the Cu alloy film buried in the recess; and forming a dielectric film on the Cu wiring.
    Type: Application
    Filed: June 26, 2014
    Publication date: January 1, 2015
    Inventors: Osamu YOKOYAMA, Cheonsoo HAN, Takashi SAKUMA, Chiaki YASUMURO, Tatsuo HIRASAWA, Tadahiro ISHIZAKA, Kenji SUZUKI
  • Publication number: 20140090597
    Abstract: In a plasma processing method, plasma processing is performed in a state where the object is attracted and held on the electrostatic chuck by applying a first voltage as an application voltage thereto and a thermal conduction gas is supplied to a gap between the electrostatic chuck and the object. The application voltage is decreased while stopping the supply of the thermal conduction gas and exhausting the thermal conduction gas remaining between the electrostatic chuck and the object upon completion of the plasma processing. The object is separated from the electrostatic chuck by setting the application voltage to the electrostatic chuck to zero after the application voltage is decreased.
    Type: Application
    Filed: October 2, 2013
    Publication date: April 3, 2014
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Tatsuo HIRASAWA, Osamu YOKOYAMA, Chiaki YASUMURO, Toshiaki FUJISATO, Ryota YOSHIDA, Takashi SAKUMA, Cheonsoo HAN