Patents by Inventor Jun Yamawaku

Jun Yamawaku 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: 20240133031
    Abstract: [Solution] A device according to the present disclosure comprises: a plasma generation chamber that is provided with a plasma generation mechanism for activating a second processing gas, when forming a film on a substrate by supplying each of a first processing gas, a substitution gas, the plasma-activated second processing gas, and the substitution gas, in order and by turns, to a processing vessel in which an interior processing space is evacuated so as to become a vacuum atmosphere; an evacuation mechanism that evacuates the plasma generation chamber; and a supply destination changing valve that is provided on an evacuation path connecting the plasma generation chamber and the evacuation mechanism, and opens and closes such that the supply destination of the plasma-activated second processing gas switches between a downstream side of the evacuation path, and the processing space.
    Type: Application
    Filed: January 26, 2022
    Publication date: April 25, 2024
    Inventor: Jun YAMAWAKU
  • Patent number: 11935727
    Abstract: There is provided a focus ring that is capable of preventing deposits from adhering to a member having a lower temperature in a gap between two members having different temperatures. A focus ring 25 is disposed to surround a peripheral portion of a wafer W in a chamber 11 of a substrate processing apparatus 10. The focus ring 25 includes an inner focus ring 25a and an outer focus ring 25b. Here, the inner focus ring 25a is placed adjacent to the wafer W and configured to be cooled; and the outer focus ring 25b is placed so as to surround the inner focus ring 25a and configured not to be cooled. Further, a block member 25c is provided in a gap between the inner focus ring 25a and the outer focus ring 25b.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: March 19, 2024
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Jun Yamawaku, Chishio Koshimizu
  • Publication number: 20230250530
    Abstract: A film forming method of forming a metallic titanium film on a substrate, includes: a process of forming the metallic titanium film by an atomic layer deposition (plasma enhanced ALD) method that alternately performs an adsorption operation of adsorbing a raw material gas onto a surface of the substrate by supplying the raw material gas into a processing container in which the substrate is accommodated, and a reaction operation of supplying a reactive gas into the processing container to plasmarize the reactive gas and causing the plasmarized reactive gas to react with the raw material gas adsorbed onto the surface of the substrate, wherein, in the reaction operation, the reactive gas is plasmarized with radio frequency power having a frequency of 38 MHz or more and 60 MHz or less.
    Type: Application
    Filed: June 30, 2021
    Publication date: August 10, 2023
    Inventors: Takamichi KIKUCHI, Jun YAMAWAKU, Tatsuo MATSUDO
  • Publication number: 20230230809
    Abstract: There is provided a plasma processing device comprising: a chamber; an upper electrode; a showerhead provided below the upper electrode, which divides an internal space of the chamber into a first space between the upper electrode and the showerhead and a second space below the showerhead, and provides a plurality of introduction ports for introducing a gas into the second space and a plurality of openings penetrating the showerhead so that the first space and the second space are in communication with each other; a substrate support portion configured to support a substrate in the second space; an ion trap provided between the upper electrode and the showerhead, wherein the ion trap provides a plurality of through holes arranged not to align with the plurality of openings of the showerhead; a first gas supply portion configured to supply a gas to a region in the first space between the upper electrode and the ion trap; a second gas supply portion configured to supply the showerhead with a gas to be introduce
    Type: Application
    Filed: March 15, 2021
    Publication date: July 20, 2023
    Inventors: Tatsuo MATSUDO, Jun YAMAWAKU
  • Patent number: 11578407
    Abstract: A film-forming apparatus for forming a predetermined film on a substrate by plasma ALD includes a chamber, a stage, a shower head having an upper electrode and a shower plate insulated from the upper electrode, a first high-frequency power supply connected to the upper electrode, and a second high-frequency power supply connected to an electrode contained in the stage. A high-frequency power is supplied from the first high-frequency power supply to the upper electrode, thereby forming a high-frequency electric field between the upper electrode and the shower plate and generating a first capacitively coupled plasma. A high-frequency power is supplied from the second high-frequency power supply to the electrode, thereby forming a high-frequency electric field between the shower plate and the electrode in the stage and generating a second capacitively coupled plasma that is independent from the first capacitively coupled plasma.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: February 14, 2023
    Assignee: TOKYO ELECTRON LIMITED
    Inventor: Jun Yamawaku
  • Patent number: 11443920
    Abstract: A plasma processing apparatus includes a plasma generation unit for converting a processing gas into plasma by an inductive coupling. The plasma generation unit includes a first high frequency antenna formed of a vortex coil having open opposite ends and, at a central portion of a line between the open ends, a supply point of a high frequency power and a grounding point grounded through a capacitor; a second high frequency antenna formed of a planar vortex coil disposed between first and second high frequency antenna elements of the first high frequency antenna; and an impedance adjustment unit for adjusting a resonant frequency of a circuit viewed from a high frequency power supply toward the first high frequency antenna which is configured to have two resonant frequencies depending on adjustment of the impedance adjustment unit when the frequency of the high frequency power is changed.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: September 13, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Jun Yamawaku, Tatsuo Matsudo, Chishio Koshimizu
  • Publication number: 20220277932
    Abstract: There is provided a plasma processing device. The plasma processing device comprises: a chamber accommodating a stage on which a substrate is placed; an antenna disposed outside the chamber; a dielectric window disposed between the chamber and the antenna; a gas supply unit configured to supply a process gas into the chamber; a power supply unit configured to supply high-frequency power to the antenna to supply high-frequency waves into the chamber through the dielectric window and generate plasma from the process gas in the chamber; an electron generation unit configured to generate electrons in the chamber by excitation of the process gas supplied into the chamber; and a control device configured to control the power supply unit so as to supply the high-frequency power to the antenna simultaneously with the start of the excitation of the process gas by the electron generation unit or after the excitation of the process gas by the electron generation unit is started.
    Type: Application
    Filed: July 27, 2020
    Publication date: September 1, 2022
    Inventor: Jun YAMAWAKU
  • Publication number: 20220165544
    Abstract: There is provided a plasma processing device.
    Type: Application
    Filed: March 13, 2020
    Publication date: May 26, 2022
    Inventors: Munehito KAGAYA, Satoru KAWAKAMI, Tsuyoshi MORIYA, Tatsuo MATSUDO, Jun YAMAWAKU, Hiroyuki ONODA
  • Patent number: 11315765
    Abstract: Disclosed is a plasma processing apparatus including a processing chamber configured to perform a processing on a wafer by plasma, a VF power supply configured to change a frequency of a high frequency power to be supplied into the chamber, a susceptor configured to mount the wafer thereon, and a focus ring disposed to surround the wafer. A first route, which passes through the plasma starting from the VF power supply, passes through the susceptor, the wafer and the plasma, and a second route, which passes through the plasma starting from the VF power supply, passes through the susceptor, the focus ring and the plasma. The reflection minimum frequency of the first route is different from the reflection minimum frequency of the second route, and the frequency range changeable by the VF power supply includes the reflection minimum frequencies of the first and second routes.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: April 26, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Jun Yamawaku, Chishio Koshimizu, Tatsuo Matsudo
  • Publication number: 20210222296
    Abstract: A film-forming apparatus for forming a predetermined film on a substrate by plasma ALD includes a chamber, a stage, a shower head having an upper electrode and a shower plate insulated from the upper electrode, a first high-frequency power supply connected to the upper electrode, and a second high-frequency power supply connected to an electrode contained in the stage. A high-frequency power is supplied from the first high-frequency power supply to the upper electrode, thereby forming a high-frequency electric field between the upper electrode and the shower plate and generating a first capacitively coupled plasma. A high-frequency power is supplied from the second high-frequency power supply to the electrode, thereby forming a high-frequency electric field between the shower plate and the electrode in the stage and generating a second capacitively coupled plasma that is independent from the first capacitively coupled plasma.
    Type: Application
    Filed: April 9, 2019
    Publication date: July 22, 2021
    Inventor: Jun YAMAWAKU
  • Patent number: 10937631
    Abstract: A plasma processing apparatus includes a high frequency antenna having first and second antenna elements. One end of the first antenna element is grounded and the other end thereof is connected to a high frequency power supply. One end of the second antenna element is an open end and the other end thereof is connected to either one of the one end and the other end of the first antenna element, a line length of the second antenna element having a value obtained by multiplying ((?/4)+n?/2) by a fractional shortening (? is a wavelength of high frequency in vacuum and n is a natural number). A circuit viewed from the high frequency power supply toward the high frequency antenna is configured to generate, when a frequency of a high frequency power is changed, two resonant frequencies by an adjustment of the impedance adjustment unit.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: March 2, 2021
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Jun Yamawaku, Tatsuo Matsudo, Chishio Koshimizu
  • Publication number: 20200373131
    Abstract: There is provided a focus ring that is capable of preventing deposits from adhering to a member having a lower temperature in a gap between two members having different temperatures. A focus ring 25 is disposed to surround a peripheral portion of a wafer W in a chamber 11 of a substrate processing apparatus 10. The focus ring 25 includes an inner focus ring 25a and an outer focus ring 25b. Here, the inner focus ring 25a is placed adjacent to the wafer W and configured to be cooled; and the outer focus ring 25b is placed so as to surround the inner focus ring 25a and configured not to be cooled. Further, a block member 25c is provided in a gap between the inner focus ring 25a and the outer focus ring 25b.
    Type: Application
    Filed: August 11, 2020
    Publication date: November 26, 2020
    Inventors: Jun Yamawaku, Chishio Koshimizu
  • Publication number: 20200357606
    Abstract: A plasma processing apparatus includes: an evacuable processing chamber including a dielectric window; a substrate supporting unit, provided in the processing chamber, for mounting thereon a target substrate; a processing gas supply unit for supplying a desired processing gas to the processing chamber to perform a plasma process on the target substrate; a first RF antenna, provided on the dielectric window, for generating a plasma by an inductive coupling in the processing chamber; and a first RF power supply unit for supplying an RF power to the first RF antenna. The first RF antenna includes a primary coil provided on or above the dielectric window and electrically connected to the first RF power supply unit; and a secondary coil provided such that the coils are coupled with each other by an electromagnetic induction therebetween while being arranged closer to a bottom surface of the dielectric window than the primary coil.
    Type: Application
    Filed: May 1, 2020
    Publication date: November 12, 2020
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yohei YAMAZAWA, Masashi SAITO, Kazuki DENPOH, Chishio KOSHIMIZU, Jun YAMAWAKU
  • Patent number: 10804076
    Abstract: A plasma processing apparatus includes a processing chamber including a dielectric window; a coil shaped RF antenna provided outside the dielectric window; a substrate supporting unit, provided in the processing chamber, for mounting thereon a target substrate to be processed; a processing gas supply unit for supplying a desired processing gas to the processing chamber to perform a desired plasma process on the target substrate; and an RF power supply unit for supplying an RF power to the RF antenna to generate a plasma of the processing gas by an inductive coupling in the processing chamber. The apparatus further includes a floating coil electrically floated and arranged at a position outside the processing chamber where the floating coil is to be coupled with the RF antenna by an electromagnetic induction; and a capacitor provided in a loop of the floating coil.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: October 13, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Yohei Yamazawa, Chishio Koshimizu, Kazuki Denpoh, Jun Yamawaku, Masashi Saito
  • Publication number: 20200312626
    Abstract: A film forming apparatus includes a high-frequency power supply capable of changing a frequency and a matcher for matching an internal impedance of the high-frequency power supply and a load impedance of a load including plasma. The matcher includes a capacitor having a fixed electrostatic capacitance and connected in series with the load. When the high-frequency power supply starts to supply a high-frequency power at a first frequency, the high-frequency power supply sweeps the frequency of the high-frequency power to be supplied such that reflected waves from the load are minimized. When it is determined that plasma is ignited, the high-frequency power supply changes the frequency of the high-frequency power to be supplied, from a second frequency at which plasma is ignited to a third frequency at which plasma is maintained, and instructs the matcher to perform an adjustment such that the reflected waves are minimized at the third frequency.
    Type: Application
    Filed: March 20, 2020
    Publication date: October 1, 2020
    Applicant: Tokyo Electron Limited
    Inventor: Jun YAMAWAKU
  • Patent number: 10777392
    Abstract: There is provided a focus ring that is capable of preventing deposits from adhering to a member having a lower temperature in a gap between two members having different temperatures. A focus ring 25 is disposed to surround a peripheral portion of a wafer W in a chamber 11 of a substrate processing apparatus 10. The focus ring 25 includes an inner focus ring 25a and an outer focus ring 25b. Here, the inner focus ring 25a is placed adjacent to the wafer W and configured to be cooled; and the outer focus ring 25b is placed so as to surround the inner focus ring 25a and configured not to be cooled. Further, a block member 25c is provided in a gap between the inner focus ring 25a and the outer focus ring 25b.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: September 15, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Jun Yamawaku, Chishio Koshimizu
  • Publication number: 20200144026
    Abstract: A plasma processing apparatus includes a plasma generation unit for converting a processing gas into plasma by an inductive coupling. The plasma generation unit includes a first high frequency antenna formed of a vortex coil having open opposite endse and, at a central portion of a line between the open ends, a supply point of a high frequency power and a grounding point grounded through a capacitor; a second high frequency antenna formed of a planar vortex coil disposed between first and second high frequency antenna elements of the first high frequency antenna; and an impedance adjustment unit for adjusting a resonant frequency of a circuit viewed from a high frequency power supply toward the first high frequency antenna which is configured to have two resonant frequencies depending on adjustment of the impedance adjustment unit when the frequency of the high frequency power is changed.
    Type: Application
    Filed: December 30, 2019
    Publication date: May 7, 2020
    Inventors: Jun YAMAWAKU, Tatsuo MATSUDO, Chishio KOSHIMIZU
  • Publication number: 20200058467
    Abstract: A plasma processing apparatus includes a processing chamber, a part of which is formed of a dielectric window; a substrate supporting unit, provided in the processing chamber, for mounting a target substrate; a processing gas supply unit for supplying a processing gas to the processing chamber to perform a plasma process on the target substrate; an RF antenna, provided outside the dielectric window, for generating a plasma from the processing gas by an inductive coupling in the processing chamber; and an RF power supply unit for supplying an RF power to the RF antenna. The RF antenna includes a single-wound or multi-wound coil conductor having a cutout portion in a coil circling direction; and a pair of RF power lines from the RF power supply unit are respectively connected to a pair of coil end portions of the coil conductor that are opposite to each other via the cutout portion.
    Type: Application
    Filed: October 24, 2019
    Publication date: February 20, 2020
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yohei YAMAZAWA, Kazuki DENPOH, Jun YAMAWAKU
  • Publication number: 20190221405
    Abstract: Disclosed is a plasma processing apparatus including a processing chamber configured to perform a processing on a wafer by plasma, a VF power supply configured to change a frequency of a high frequency power to be supplied into the chamber, a susceptor configured to mount the wafer thereon, and a focus ring disposed to surround the wafer. A first route, which passes through the plasma starting from the VF power supply, passes through the susceptor, the wafer and the plasma, and a second route, which passes through the plasma starting from the VF power supply, passes through the susceptor, the focus ring and the plasma. The reflection minimum frequency of the first route is different from the reflection minimum frequency of the second route, and the frequency range changeable by the VF power supply includes the reflection minimum frequencies of the first and second routes.
    Type: Application
    Filed: March 28, 2019
    Publication date: July 18, 2019
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Jun YAMAWAKU, Chishio KOSHIMIZU, Tatsuo MATSUDO
  • Patent number: 10325758
    Abstract: A plasma processing apparatus includes a plasma generation unit configured to convert a processing gas supplied into a processing chamber into plasma by an inductive coupling. The plasma generation unit includes a first high frequency antenna formed of a vortex coil arranged adjacent to the processing chamber through a dielectric window, a second high frequency antenna having a natural resonant frequency and formed of a vortex coil arranged at an outer or inner peripheral side of the first high frequency antenna, and an impedance adjustment unit for adjusting a resonant frequency of a circuit viewed from the high frequency power supply toward the first high frequency antenna. The circuit viewed from the high frequency power supply toward the first high frequency antenna is configured to have two resonant frequencies depending on adjustment of the impedance adjustment unit when a frequency of high frequency power is changed.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: June 18, 2019
    Assignee: Tokyo Electron Limited
    Inventors: Jun Yamawaku, Tatsuo Matsudo, Chishio Koshimizu