Patents by Inventor Tatsuo Matsudo

Tatsuo Matsudo 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: 20240120179
    Abstract: There is provided a plasma processing apparatus for performing plasma processing on a substrate, comprising: a processing container accommodating the substrate; an electrode to which a high-frequency power for generating plasma in the processing container is applied; a high-frequency power supply configured to apply the high-frequency power to the electrode; and a high-frequency power supply circuit configured to supply the high-frequency power from the high-frequency power supply to the electrode. The high-frequency power supply circuit comprises: a power supply path configured to supply a power from the high-frequency power supply to the electrode; and a matching device configured to match a high-frequency power supply-side impedance with a plasma-side impedance, the matching device comprising a negative impedance portion that is connected to the power supply path and realizes a negative impedance corresponding to a plasma-side impedance.
    Type: Application
    Filed: January 19, 2022
    Publication date: April 11, 2024
    Inventors: Masaharu SHIRATANI, Kunihiro KAMATAKI, Kazunori KOGA, Takahiro SHINDO, Tatsuo MATSUDO
  • Publication number: 20230411118
    Abstract: A plasma treatment device according to the present disclosure comprises a chamber, a gas supply part, a substrate support part, a ground electrode, an upper electrode, first and second high frequency power sources, and a rectifier. The gas supply part supplies a gas into the chamber. The substrate support part is provided inside the chamber. The ground electrode is provided inside the chamber. The upper electrode is provided above the substrate support part and the ground electrode. The first high frequency power source is electrically connected to the upper electrode in order to generate plasma in the chamber from the gas. The second high frequency power source is electrically connected to the upper electrode. The rectifier blocks the application of a negative voltage to the upper electrode by the second high frequency power source.
    Type: Application
    Filed: November 8, 2021
    Publication date: December 21, 2023
    Inventor: Tatsuo MATSUDO
  • Publication number: 20230307215
    Abstract: There is provided a plasma processing apparatus comprising: a chamber; a gas supply configured to supply a gas into the chamber; an exhaust device configured to exhaust a gas in the chamber; a substrate support including a lower electrode and provided in the chamber; an upper electrode provided above the substrate support; a high-frequency power supply configured to supply high-frequency power to the upper electrode; an impedance circuit connected between the lower electrode and ground; and a controller configured to control the gas supply and the exhaust device such that a pressure of the gas in the chamber is 26.66 Pa or higher. A frequency of the high-frequency power is lower than 13.56 MHz, and an impedance of the impedance circuit is set such that an impedance of an electrical path from the lower electrode through the impedance circuit to the ground is higher than an impedance of an electrical path from a wall of the chamber to the ground.
    Type: Application
    Filed: August 24, 2021
    Publication date: September 28, 2023
    Inventors: Tatsuo MATSUDO, Yasushi MORITA
  • 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
  • Publication number: 20230167554
    Abstract: A plasma processing apparatus comprising: a chamber; an upper electrode; a shower head having openings, an inner space of the chamber being divided into a first space and a second space; a shielding part including first and second shielding plates arranged in parallel between the upper electrode and the shower head, the shielding part having through-holes aligned with the openings; a gas supply device configured to supply a gas; a radio frequency (RF) power supply configured to output an RF voltage; a voltage applying part configured to select ions or radicals passing through the through-holes in the plasma by applying a control voltage to the shielding part; and a controller configured to control the voltage applying part by independently applying a control voltage to each of the first and second shield plates depending on control from the controller.
    Type: Application
    Filed: November 18, 2022
    Publication date: June 1, 2023
    Inventor: Tatsuo MATSUDO
  • Publication number: 20230051432
    Abstract: A film forming apparatus includes a vacuum-evacuable processing chamber, a lower electrode for mounting thereon a target substrate, an upper electrode disposed to face the lower electrode, a gas supply unit, a voltage application unit and a switching unit. The gas supply unit supplies a film forming source gas to be formed into plasma to a processing space between the upper and the lower electrode. The voltage application unit applies to the upper electrode a voltage outputted from at least one of a high frequency power supply and a DC power supply included therein. The switching unit selectively switches the voltage to be applied to the upper electrode among a high frequency voltage outputted from the high frequency power supply, a DC voltage outputted from the DC power supply, and a superimposed voltage in which the DC voltage is superimposed with the high frequency voltage.
    Type: Application
    Filed: October 26, 2022
    Publication date: February 16, 2023
    Inventors: Shinya IWASHITA, Ayuta SUZUKI, Takahiro SHINDO, Kazuki DEMPOH, Tatsuo MATSUDO, Yasushi MORITA, Takamichi KIKUCHI, Tsuyoshi MORIYA
  • 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
  • Patent number: 11410834
    Abstract: A substrate processing apparatus of the present disclosure includes a processing container capable of being vacuum-exhausted, a lower electrode, and an upper electrode. A target substrate can be placed on the lower electrode. The upper electrode is disposed in the processing container so as to face the lower electrode. A substrate processing method of the present disclosure includes performing a first process on the target substrate using an AC voltage without using a DC pulse voltage, and performing a second process on the target substrate using the DC pulse voltage.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: August 9, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Keiichi Tanaka, Tatsuo Matsudo
  • 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: 11328904
    Abstract: A substrate processing apparatus, for generating a plasma from a gas by a high frequency energy and etching a substrate in a processing chamber by radicals in the plasma, includes a high frequency power supply configured to supply the high frequency energy into the processing chamber, a gas supply source configured to introduce the gas into the processing chamber, a mounting table configured to mount the substrate thereon, and a partition plate provided in the processing chamber and configured to divide an inner space of the processing chamber into a plasma generation space and a substrate processing space and suppress passage of ions therethrough. The partition plate and a portion of an inner wall surface of the processing chamber which is positioned at least above the mounting table are covered by a dielectric material having a recombination coefficient of 0.002 or less.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: May 10, 2022
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Shigeki Doba, Hiroyuki Ogawa, Hajime Naito, Akitaka Shimizu, Tatsuo Matsudo
  • 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: 20220020568
    Abstract: A plasma processing apparatus is provided to perform plasma processing on a substrate. The plasma processing apparatus includes a processing chamber, a substrate support disposed in the processing chamber to place thereon the substrate, a grounded lower electrode provided in the substrate support, an upper electrode disposed to face the lower electrode, a gas supply unit to supply a processing gas to a space between the upper electrode and the substrate support, and a radio frequency power supply to apply RF power to the upper electrode to generate plasma of the processing gas. The plasma processing apparatus further includes a voltage waveform shaping unit provided between the RF power supply and the upper electrode to shape a voltage waveform of the RF power supply to suppress a positive voltage of the RF voltage applied to the upper electrode.
    Type: Application
    Filed: July 13, 2021
    Publication date: January 20, 2022
    Inventors: Takahiro SHINDO, Seiichi OKAMOTO, Hiroshi OTOMO, Takamichi KIKUCHI, Tatsuo MATSUDO, Yasushi MORITA, Takashi SAKUMA
  • Publication number: 20210280394
    Abstract: A substrate processing apparatus of the present disclosure includes a processing container capable of being vacuum-exhausted, a lower electrode, and an upper electrode. A target substrate can be placed on the lower electrode. The upper electrode is disposed in the processing container so as to face the lower electrode. A substrate processing method of the present disclosure includes performing a first process on the target substrate using an AC voltage without using a DC pulse voltage, and performing a second process on the target substrate using the DC pulse voltage.
    Type: Application
    Filed: June 13, 2019
    Publication date: September 9, 2021
    Inventors: Keiichi TANAKA, Tatsuo MATSUDO
  • Publication number: 20210151285
    Abstract: A temperature measurement system includes: a thickness calculating unit that calculates an optical thickness of a substrate; a rotation position detecting unit that detects rotation position information of the rotary table; a substrate specifying unit that specifies a substrate based on the rotation position information; a storage unit that stores first relationship information indicating a relationship between a temperature and a thickness associated with each substrate, and second relationship information indicating a relationship between an amount of change in temperature and an amount of change in optical thickness associated with each substrate; and a temperature calculating unit that calculates a temperature of the substrate based on the optical thickness calculated by the thickness calculating unit, the substrate specified by the substrate specifying unit, the first relationship information, and the second relationship information.
    Type: Application
    Filed: November 5, 2020
    Publication date: May 20, 2021
    Inventors: Takeshi KOBAYASHI, Tatsuo MATSUDO
  • 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: 20200321195
    Abstract: A substrate processing apparatus, for generating a plasma from a gas by a high frequency energy and etching a substrate in a processing chamber by radicals in the plasma, includes a high frequency power supply configured to supply the high frequency energy into the processing chamber, a gas supply source configured to introduce the gas into the processing chamber, a mounting table configured to mount the substrate thereon, and a partition plate provided in the processing chamber and configured to divide an inner space of the processing chamber into a plasma generation space and a substrate processing space and suppress passage of ions therethrough. The partition plate and a portion of an inner wall surface of the processing chamber which is positioned at least above the mounting table are covered by a dielectric material having a recombination coefficient of 0.002 or less.
    Type: Application
    Filed: June 18, 2020
    Publication date: October 8, 2020
    Inventors: Shigeki DOBA, Hiroyuki OGAWA, Hajime NAITO, Akitaka SHIMIZU, Tatsuo MATSUDO
  • Patent number: 10746531
    Abstract: A wear amount measuring apparatus includes a light source, a light transmission unit, a first and a second irradiation unit, a spectroscope and an analysis unit. The light transmission unit splits a low-coherence light from the light source into a first and a second low-coherence light. The first and the second irradiation units irradiate the first and the second low-coherence light to the component to receive reflected lights from the component. The light transmission unit transmits the reflected lights received by the first irradiation unit and the second irradiation unit to the spectroscope. The spectroscope configured to detect intensity distribution of the reflected lights from the first and the second irradiation unit. The analysis unit calculates a thickness difference between a thickness of the component at the first measuring point and that at the second measuring point by performing Fourier transform on the intensity distribution.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: August 18, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventor: Tatsuo Matsudo
  • Patent number: 10734201
    Abstract: A substrate processing apparatus, for generating a plasma from a gas by a high frequency energy and etching a substrate in a processing chamber by radicals in the plasma, includes a high frequency power supply configured to supply the high frequency energy into the processing chamber, a gas supply source configured to introduce the gas into the processing chamber, a mounting table configured to mount the substrate thereon, and a partition plate provided in the processing chamber and configured to divide an inner space of the processing chamber into a plasma generation space and a substrate processing space and suppress passage of ions therethrough. The partition plate and a portion of an inner wall surface of the processing chamber which is positioned at least above the mounting table are covered by a dielectric material having a recombination coefficient of 0.002 or less.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: August 4, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Shigeki Doba, Hiroyuki Ogawa, Hajime Naito, Akitaka Shimizu, Tatsuo Matsudo
  • Patent number: 10685859
    Abstract: There is provided a plasma processing apparatus, including: a chamber main body; a plasma trap installed inside a chamber provided by the chamber main body, and configured to divide the chamber into a first space and a second space; a mounting table installed in the second space; a plasma source configured to excite gases supplied to the first space; and a potential adjustment part including an electrode to be capacitively coupled to a plasma generated in the first space, and configured to adjust a potential of the plasma.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: June 16, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Chishio Koshimizu, Tatsuo Matsudo