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: 20160118222
    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: January 8, 2016
    Publication date: April 28, 2016
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yohei YAMAZAWA, Kazuki DENPOH, Jun YAMAWAKU
  • Patent number: 9313872
    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: October 27, 2010
    Date of Patent: April 12, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Yohei Yamazawa, Chishio Koshimizu, Kazuki Denpoh, Jun Yamawaku, Masashi Saito
  • Patent number: 9253867
    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: Grant
    Filed: October 27, 2010
    Date of Patent: February 2, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Yohei Yamazawa, Masashi Saito, Kazuki Denpoh, Chishio Koshimizu, Jun Yamawaku
  • Patent number: 9236226
    Abstract: In the plasma processing apparatus 10, a processing space S is formed between a susceptor 12 and an upper electrode 13 facing the susceptor 12. The plasma processing apparatus 10 includes a magnetic field generating unit provided at a side of the upper electrode 13 opposite to the processing space S. The magnetic field generating unit includes a magnetic force line generating unit 27 having a pair of annular magnet rows 27a and 27b. The annular magnet rows 27a and 27b are provided at the side of the upper electrode 13 opposite to the processing space S and arranged concentrically when viewed from the top. In the magnetic force line generating unit 27, an angle ?1 formed by axial lines of magnets of the annular magnet rows 27a and 27b is set to be in a range of about 0°<?1?180°.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: January 12, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Jun Yamawaku, Takafumi Kimura, Chishio Koshimizu
  • Patent number: 9111747
    Abstract: A film deposition apparatus configured to perform a film deposition process on a substrate in a vacuum chamber includes a turntable configured to rotate a substrate loading area to receive the substrate, a film deposition area including at least one process gas supplying part configured to supply a process gas onto the substrate loading area and configured to form a thin film by depositing at least one of an atomic layer and a molecular layer along with a rotation of the turntable, a plasma treatment part provided away from the film deposition area in a rotational direction of the turntable and configured to treat the at least one of the atomic layer and the molecular layer for modification by plasma, and a bias electrode part provided under the turntable without contacting the turntable and configured to generate bias potential to attract ions in the plasma toward the substrate.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: August 18, 2015
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Jun Yamawaku, Chishio Koshimizu, Mitsuhiro Tachibana, Hitoshi Kato, Takeshi Kobayashi, Shigehiro Miura, Takafumi Kimura
  • Publication number: 20150179407
    Abstract: Disclosed is a plasma processing method for generating plasma between an upper electrode connected with a VF power supply and a susceptor disposed to face the upper electrode to perform a plasma processing on a wafer by the plasma. The plasma processing method includes: providing an auxiliary circuit configured to reduce a difference between a reflection minimum frequency of a first route where a high frequency current generated from the VF power supply flows before ignition of the plasma and a reflection minimum frequency of a second route where the high frequency current generated from the VF power supply flows after the ignition of the plasma; igniting the plasma; and maintaining the plasma.
    Type: Application
    Filed: December 19, 2014
    Publication date: June 25, 2015
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Chishio KOSHIMIZU, Jun YAMAWAKU
  • Publication number: 20150170882
    Abstract: Disclosed is a plasma processing apparatus including a 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: December 10, 2014
    Publication date: June 18, 2015
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Jun YAMAWAKU, Chishio KOSHIMIZU, Tatsuo MATSUDO
  • Publication number: 20150132505
    Abstract: A plasma processing apparatus is provided. According to the apparatus, a main antenna connected to a high frequency power source and an auxiliary antenna electrically insulated from main antenna is arranged. Moreover, projection areas when the main antenna and the auxiliary antenna are seen in a plan view are arranged so as not to overlap with each other. More specifically, the auxiliary antenna is arranged on a downstream side in a rotational direction of the turntable relative to the main antenna. Then, a first electromagnetic field is generated in the auxiliary antenna by way of an induction current flowing through the main antenna, and a second induction plasma is generated even in an area under the auxiliary antenna in addition to an area under the main antenna by resonating the auxiliary antenna.
    Type: Application
    Filed: November 12, 2014
    Publication date: May 14, 2015
    Inventors: Hitoshi KATO, Shigehiro MIURA, Chishio KOSHIMIZU, Jun YAMAWAKU, Yohei YAMAZAWA
  • Patent number: 9028139
    Abstract: A component in a processing chamber of a substrate processing apparatus, where a temperature may be accurately measured by using a temperature measuring apparatus using an interference of a low-coherence light, even when a front surface and a rear surface are not parallel due to abrasion, or the like. A focus ring used in a vacuum atmosphere and of which a temperature is measured includes an abrasive surface exposed to an abrasive atmosphere according to plasma, a nonabrasive surface not exposed to the abrasive atmosphere, a thin-walled portion including a top surface and a bottom surface that are parallel to each other, and a coating member coating the top surface of the thin-walled portion, wherein a mirror-like finishing is performed on each of the top and bottom surfaces of the thin-walled portion.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: May 12, 2015
    Assignee: Tokyo Electron Limited
    Inventors: Jun Yamawaku, Chishio Koshimizu, Tatsuo Matsudo
  • Patent number: 9019505
    Abstract: The temperature control system includes: a susceptor which allows an object to be processed to be held on a top surface thereof and includes a flow path, through which a temperature adjusting medium flows, formed therein; a temperature measuring unit which measures a temperature of the object to be processed held on the top surface of the susceptor; a first temperature adjusting unit which adjusts a temperature of the temperature adjusting medium flowing through the flow path; and a second temperature adjusting unit which is disposed between the susceptor and the first temperature adjusting unit, and adjusts a temperature of the temperature adjusting medium based on a result of the measurement of the temperature measuring unit.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: April 28, 2015
    Assignee: Tokyo Electron Limited
    Inventors: Jun Yamawaku, Chishio Koshimizu, Tatsuo Matsudo, Kenji Nagai
  • Patent number: 8964350
    Abstract: A substrate processing apparatus includes an electrostatic chuck enclosing an electrostatic electrode plate and a chamber having a ground potential and housing the electrostatic chuck. DC discharge is generated between a wafer and the chamber by setting the potential of the electrostatic electrode plate of the electrostatic chuck which is maintained at a first predetermined potential during a plasma etching process to a ground potential after the plasma etching process to increase the absolute value of the potential difference between the wafer and the chamber. DC discharge is then re-generated by applying, to the electrostatic electrode plate, DC voltage having the same potential as a second predetermined potential which is generated at the wafer after the DC discharge is generated, and by increasing the absolute value of the potential difference between the wafer and the chamber. The wafer is then easily removed from the electrostatic chuck.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: February 24, 2015
    Assignee: Tokyo Electron Limited
    Inventors: Jun Yamawaku, Yohei Yamazawa
  • Patent number: 8858753
    Abstract: There are provided a method of heating a focus ring and a plasma etching apparatus, capable of simplifying a structure of a heating mechanism without a dummy substrate. The plasma etching apparatus includes a vacuum processing chamber; a lower electrode serving as a mounting table for mounting a substrate thereon; an upper electrode provided to face the lower electrode; a gas supply unit for supplying a processing gas; a high frequency power supply for supplying a high frequency power to the lower electrode to generate a plasma of the processing gas; and a focus ring provided on the lower electrode to surround a periphery of the substrate. In the plasma etching apparatus, the focus ring is heated by irradiating a heating light thereto from a light source provided outside the vacuum processing chamber.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: October 14, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Chishio Koshimizu, Jun Yamawaku, Tatsuo Matsudo, Masashi Saito
  • Patent number: 8845853
    Abstract: A substrate processing apparatus that can improve the uniformity of plasma processing carried out on a wafer. The wafer is housed in a chamber of the substrate processing apparatus and subjected to plasma processing using plasma produced in the processing chamber. A temperature control mechanism jets a high-temperature gas toward at least part of an annular focus ring facing the plasma.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: September 30, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Jun Yamawaku, Tsuyoshi Moriya
  • Patent number: 8824875
    Abstract: There is provided a method for heating a part within a processing chamber of a semiconductor manufacturing apparatus having a substrate in the processing chamber and performing a process on the substrate. The heating method includes generating heating lights which is generated by a heating light source provided outside the processing chamber and has a wavelength band capable of passing through a first part in the processing chamber and being absorbed into a second part in the processing chamber made of a material different from that of the first part, and heating the second part in the processing chamber by passing the heating lights through the first part in the processing chamber and irradiating the heating lights to the second part in the processing chamber.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: September 2, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Jun Yamawaku, Chishio Koshimizu, Tatsuo Matsudo
  • Patent number: 8825434
    Abstract: A temperature measuring method includes: transmitting a light to a measurement point of an object to be measured, the object being a substrate on which a thin film is formed; measuring a first interference wave caused by a reflected light from a surface of the substrate, and a second interference wave caused by reflected lights from an interface between the substrate and the thin film and from a rear surface of the thin film; calculating an optical path length from the first interference wave to the second interference wave; calculating a film thickness of the thin film; calculating an optical path difference between an optical path length of the substrate and the calculated optical path length; compensating for the optical path length from the first interference wave to the second interference wave; and calculating a temperature of the object at the measurement point.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: September 2, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Chishio Koshimizu, Jun Yamawaku, Tatsuo Matsudo
  • Publication number: 20140220260
    Abstract: A substrate processing apparatus for performing a plasma process inside a vacuum chamber includes a turntable including substrate mounting portions for the substrates formed along a peripheral direction of the vacuum chamber to orbitally revolve these; a plasma generating gas supplying portion supplying a plasma generating gas into a plasma generating area; an energy supplying portion supplying energy to the plasma generating gas to change the plasma generating gas to plasma; a bias electrode provided on a lower side of the turntable to face the plasma generating area and leads ions in the plasma onto surfaces of the wafers; and an evacuation port evacuating the vacuum chamber, wherein the bias electrode extends from a rotational center of the turntable to an outer edge side, and a width of the bias electrode in a rotational direction is smaller than a distance between adjacent substrate mounting portions.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 7, 2014
    Applicant: Tokyo Electron Limited
    Inventors: Jun Yamawaku, Chishio Koshimizu, Mitsuhiro Tachibana, Hitoshi Kato, Takeshi Kobayashi, Shigehiro Miura, Takafumi Kimura
  • Publication number: 20140216346
    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; a processing gas supply unit; 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 RF power having an appropriate frequency for RF discharge of the processing gas; a correction coil, provided at a position outside the processing chamber where the correction coil is to be coupled with the RF antenna by an electromagnetic induction, for controlling a plasma density distribution on the substrate in the processing chamber; a switching device provided in a loop of the correction coil; and a switching control unit for on-off controlling the switching device at a desired duty ratio by pulse width modulation.
    Type: Application
    Filed: April 11, 2014
    Publication date: August 7, 2014
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yohei YAMAZAWA, Chishio KOSHIMIZU, Masashi SAITO, Kazuki DENPOH, Jun YAMAWAKU
  • Publication number: 20140216345
    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; a processing gas supply unit; 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 RF power having an appropriate frequency for RF discharge of the processing gas; a correction coil, provided at a position outside the processing chamber where the correction coil is to be coupled with the RF antenna by an electromagnetic induction, for controlling a plasma density distribution on the substrate in the processing chamber; a switching device provided in a loop of the correction coil; and a switching control unit for on-off controlling the switching device at a desired duty ratio by pulse width modulation.
    Type: Application
    Filed: April 11, 2014
    Publication date: August 7, 2014
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yohei YAMAZAWA, Chishio KOSHIMIZU, Masashi SAITO, Kazuki DENPOH, Jun YAMAWAKU
  • Patent number: 8777483
    Abstract: The temperature measuring apparatus includes: a light source; a first wavelength-dividing unit which wavelength-divides a light from the light source into m lights whose wavelength bands are different from one another; m first dividing units which divides each of the m lights from the first wavelength-dividing unit into n lights; a transmitting unit which transmits lights from the m first dividing unit to measurement points of an object to be measured; a light receiving unit which receives a light reflected by each of the measurement points; and a temperature calculating unit which calculates a temperature of each of the measurement points based on a waveform of the light received by the light receiving unit.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: July 15, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Jun Yamawaku, Chishio Koshimizu, Tatsuo Matsudo, Kenji Nagai
  • Publication number: 20140170859
    Abstract: A film formation device to conduct a film formation process for a substrate includes a rotating table, a film formation area configured to include a process gas supply part, a plasma processing part, a lower bias electrode provided at a lower side of a position of a height of the substrate on the rotating table, an upper bias electrode arranged at the same position of the height or an upper side of a position of the height, a high-frequency power source part connected to at least one of the lower bias electrode and the upper bias electrode and configured to form a bias electric potential on the substrate in such a manner that the lower bias electrode and the upper bias electrode are capacitively coupled, and an exhaust mechanism.
    Type: Application
    Filed: December 9, 2013
    Publication date: June 19, 2014
    Applicant: Tokyo Electron Limited
    Inventors: Jun YAMAWAKU, Chishio Koshimizu, Yohei Yamazawa, Mitsuhiro Tachibana, Hitoshi Kato, Takeshi Kobayashi, Shigehiro Miura, Takafumi Kimura