Patents by Inventor Eiki KAMATA
Eiki KAMATA 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).
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Patent number: 12046453Abstract: A plasma processing apparatus includes: a processing container; a substrate holder disposed within the processing container and configured to hold a substrate thereon; a dielectric window disposed below the substrate holder; and a plurality of phased array antennas disposed below the dielectric window and configured to irradiate a plurality of electromagnetic waves.Type: GrantFiled: September 11, 2020Date of Patent: July 23, 2024Assignee: TOKYO ELECTRON LIMITEDInventors: Taro Ikeda, Atsushi Kubo, Eiki Kamata, Nobuhiko Yamamoto
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Publication number: 20240203692Abstract: A plasma processing apparatus includes a processing container, an electromagnetic wave generator, and a resonator array structure. The processing container provides a processing space. The electromagnetic wave generator generates an electromagnetic wave for plasma excitation that is supplied to the processing space. The resonator array structure is formed by arranging resonators configured to resonate with a magnetic field component of the electromagnetic wave, each of the resonators having a size smaller than a wavelength of the electromagnetic wave, and is positioned in the processing container.Type: ApplicationFiled: February 28, 2024Publication date: June 20, 2024Applicants: Tokyo Electron Limited, The University of Shiga PrefectureInventors: Shin OOWADA, Kazushi KANEKO, Masaaki MATSUKUMA, Eiki KAMATA, Satoru KAWAKAMI, Taro IKEDA, Osamu SAKAI
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Publication number: 20240186115Abstract: A plasma processing apparatus comprises a processing chamber accommodating a substrate, and defining a processing space by an upper wall, a side wall, and a lower wall, a microwave generator configured to generate a microwave for generating plasma, a plurality of microwave radiators provided above the upper wall, and configured to radiate the microwave toward the processing chamber, a plurality of microwave transmission windows provided at positions corresponding to the plurality of microwave radiators in the upper wall, and formed of a dielectric, and a plurality of resonator array structures disposed on lower surfaces of the plurality of microwave transmission windows, respectively. The resonator array structures are formed by arranging a plurality of resonators that are capable of resonance with a magnetic field component of the microwave and are smaller in size than a wavelength of the microwave.Type: ApplicationFiled: November 20, 2023Publication date: June 6, 2024Inventors: Kazushi KANEKO, Satoru Kawakami, Eiki Kamata
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Publication number: 20240186114Abstract: Provided is a plasma processing apparatus comprising a processing container configured to provide a processing space; an electromagnetic wave generator configured to generate electromagnetic waves for plasma excitation supplied to the processing space; a dielectric provided with a first surface thereof facing the processing space; an electromagnetic wave supply portion configured to supply the electromagnetic waves to the processing space through the dielectric; and a resonator array structure located along the first surface of the dielectric within the processing container, wherein the resonator array structure includes a base plate having a groove on a surface on the processing space side; a plurality of resonators capable of resonating with a magnetic field component of the electromagnetic wave and having a size smaller than a wavelength of the electromagnetic wave; and a pressing member configured to press the plurality of resonators.Type: ApplicationFiled: November 20, 2023Publication date: June 6, 2024Inventors: Kazushi KANEKO, Satoru Kawakami, Hiroshi Kondo, Eiki Kamata, Shin Oowada
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Publication number: 20240186113Abstract: There is a plasma processing apparatus comprising: a processing chamber configured to provide a processing space; an electromagnetic wave generator configured to generate electromagnetic waves for plasma excitation supplied to the processing space; a dielectric provided with a first surface facing the processing space; and an electromagnetic wave supply portion configured to supply the electromagnetic waves to the processing space through the dielectric, wherein the dielectric includes: a cell serving as a plasma generation space on the first surface side, a plurality of grooves formed on a second surface opposite to the first surface, the grooves surrounding the cell without communicating with the cell; and resonators including C-shaped ring members made of conductors inserted into the plurality of grooves, wherein the resonators are capable of resonating with magnetic field components of the electromagnetic waves and have a size smaller than a wavelength of the electromagnetic wave.Type: ApplicationFiled: November 20, 2023Publication date: June 6, 2024Inventors: Kazushi KANEKO, Hiroshi KONDO, Eiki KAMATA, Satoru KAWAKAMI
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Publication number: 20240170259Abstract: A plasma processing apparatus includes a chamber, a microwave source, and a distributor. The chamber is configured to place a substrate therein and includes a plurality of radiation units that radiate microwaves, which are arranged while facing the substrate. The microwave source outputs microwaves. The distributor has one end connected to the microwave source, and the other end branched and connected to the plurality of radiation units, and distributes and transmits the microwaves output from the microwave source to the plurality of radiation units, in which when a wavelength of the microwaves is ?, a line length from the one end to the other end falls within a predetermined range beginning from nĂ—?/2 (n is a natural number).Type: ApplicationFiled: November 15, 2023Publication date: May 23, 2024Inventors: Hiroshi KONDO, Eiki KAMATA
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Publication number: 20240170260Abstract: There is provided a plasma processing apparatus comprising: a processing container configured such that a substrate is subjected to plasma processing; a dielectric top plate which is quadrangular and which is provided to close an upper opening of the processing container; and a conductor plate supporting the dielectric top plate and having four electromagnetic wave emitting ports for emitting electromagnetic waves to the dielectric top plate. Each of the four electromagnetic wave emitting ports has a rectangular shape having long side and short side, the electromagnetic wave emitting ports are arranged such that the long side of each of the four electromagnetic wave emitting ports are parallel to the closest side among four sides of the dielectric top plate forming the quadrangular shape, and the long sides of the two electromagnetic wave emitting ports oriented in a same direction do not overlap each other in the same direction.Type: ApplicationFiled: March 14, 2022Publication date: May 23, 2024Inventors: Taro IKEDA, Mitsutoshi ASHIDA, Eiki KAMATA
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Patent number: 11967485Abstract: There is provided a plasma processing apparatus including: a chamber having a processing space in which a plasma processing is performed on a substrate and a synthetic space in which electromagnetic waves are synthesized; a dielectric window configured to partition the processing space and the synthetic space; an antenna unit including a plurality of antennas configured to radiate the electromagnetic waves to the synthetic space; an electromagnetic wave output part configured to output the electromagnetic waves to the antenna unit; and a controller configured to control the antenna unit to function as the phased array antenna, wherein the plurality of antennas are helical antennas.Type: GrantFiled: October 29, 2020Date of Patent: April 23, 2024Assignee: TOKYO ELECTRON LIMITEDInventors: Eiki Kamata, Taro Ikeda, Mikio Sato, Nobuhiko Yamamoto
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Patent number: 11887825Abstract: A method of controlling a scanning-type plasma processing apparatus using a phased array antenna, includes observing light emission of plasma generated inside a processing container through observation windows provided at multiple positions in the processing container, calculating an in-plane distribution of values representing characteristics of the plasma on a substrate, based on data on the observed light emission of the plasma, and correcting a scanning pattern and/or a plasma density distribution of the plasma based on the calculated in-plane distribution of the values representing the characteristics of the plasma on the substrate.Type: GrantFiled: October 21, 2020Date of Patent: January 30, 2024Assignee: TOKYO ELECTRON LIMITEDInventors: Mikio Sato, Eiki Kamata, Taro Ikeda
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Publication number: 20240030008Abstract: A plasma processing apparatus disclosed herein includes a stage disposed in a processing container and configured to mount thereon a substrate, a rotary driving mechanism configured to rotatably drive the stage, and a plurality of plasma sources provided on an upper wall of the processing container facing the stage. The plurality of plasma sources are not arranged axially symmetrically with respect to a rotation axis of the stage.Type: ApplicationFiled: July 17, 2023Publication date: January 25, 2024Inventors: Eiki KAMATA, Taro HAYAKAWA, Taro IKEDA
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Publication number: 20240030015Abstract: There is a plasma processing apparatus comprising: a processing container in which a mounting table on which a substrate is mounted is arranged and plasma processing is performed; a plurality of sensors for detecting a state of plasma generated in the processing container; and a controller for estimating a state of plasma in the processing container based on the state of plasma obtained from the plurality of sensors, wherein the controller obtains a two-dimensional distribution representing the state of plasma with respect to installation positions of the plurality of sensors, from data obtained from the plurality of sensors, and estimates the state of plasma in the processing container based on the obtained two-dimensional distribution.Type: ApplicationFiled: July 17, 2023Publication date: January 25, 2024Inventor: Eiki KAMATA
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Patent number: 11842886Abstract: A plasma processing method includes: supplying a gas into a processing container; and intermittently supplying microwave powers output from a plurality of microwave introducing modules into the processing container. In the intermittently supplying the microwave powers, the supply of all the microwave powers from the plurality of microwave introducing modules is periodically in an OFF state for a given time.Type: GrantFiled: October 5, 2020Date of Patent: December 12, 2023Assignee: TOKYO ELECTRON LIMITEDInventors: Taro Ikeda, Hirokazu Ueda, Eiki Kamata, Mitsutoshi Ashida, Isao Gunji
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Publication number: 20230343561Abstract: There is provided a plasma processing apparatus that converts a gas supplied into a processing container into a plasma to process a substrate, the plasma processing apparatus including: a microwave introduction window disposed in each of a plurality of openings formed in a ceiling wall of the processing container, the microwave introduction window being configured to supply power of microwaves into the processing container; and a plurality of grooves formed on the ceiling wall to surround the openings respectively, wherein widths between the grooves and the openings are not uniform with respect to circumferential directions of the openings.Type: ApplicationFiled: September 25, 2020Publication date: October 26, 2023Inventors: Satoshi ITOH, Masashi IMANAKA, Eiki KAMATA, Taro IKEDA, Shigenori OZAKI, Soudai EMORI
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Publication number: 20230335876Abstract: There is provided a tuner that forms a part of an electromagnetic wave transmission path for supplying electromagnetic waves from a power supply to a load, and that matches an impedance on a power supply side and an impedance on a load side, comprising: a coaxial line including a cylindrical inner conductor and a cylindrical outer conductor disposed coaxially outside the inner conductor; an annular first dielectric constant changing material disposed in a space between the inner conductor and the outer conductor of the coaxial line, and having a variable dielectric constant; an annular second dielectric constant changing material spaced apart from the first dielectric constant changing material in a line length direction of the coaxial line, disposed in the space between the inner conductor and the outer conductor of the coaxial line, and having a variable dielectric constant; a first power supply portion configured to supply power to the first dielectric constant changing material; and a second power supplyType: ApplicationFiled: September 6, 2021Publication date: October 19, 2023Inventors: Taro IKEDA, Eiki KAMATA
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Publication number: 20230326716Abstract: A plasma processing apparatus includes a chamber having a processing space for performing plasma processing on a substrate and a synthesis space for synthesizing electromagnetic waves, a dielectric window configured to partition the processing space and the synthesis space, an antenna unit having a plurality of antennas that radiate the electromagnetic waves into the synthesis space and functioning as a phased array antenna, an electromagnetic wave output part configured to output the electromagnetic waves to the antenna unit, and a controller configured to cause the antenna unit to function as the phased array antenna. The dielectric window has a plurality of recesses on a surface thereof facing the processing space.Type: ApplicationFiled: August 16, 2021Publication date: October 12, 2023Inventors: Eiki KAMATA, Hiroshi KANEKO, Taro IKEDA
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Patent number: 11784085Abstract: A plasma processing apparatus includes a stage provided in a chamber and having a heater therein, the stage being configured to place a substrate thereon, and an annular member provided around the stage to be spaced apart therefrom and formed of a dielectric material. At least one annular groove is formed in a lower surface of the annular member in a radial direction.Type: GrantFiled: March 11, 2020Date of Patent: October 10, 2023Assignee: TOKYO ELECTRON LIMITEDInventors: Taro Ikeda, Eiki Kamata
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Patent number: 11721528Abstract: There is provided a plasma processing apparatus including: a processing container; a first electrode provided inside the processing container and connected to a high-frequency power supply; a second electrode provided inside the processing container to face the first electrode, the second electrode being grounded; and a film thickness calculator connected to at least one of the first electrode and the second electrode and configured to calculate a thickness of a film deposited on the at least one of the first electrode and the second electrode.Type: GrantFiled: September 2, 2020Date of Patent: August 8, 2023Assignee: TOKYO ELECTRON LIMITEDInventors: Taro Ikeda, Mikio Sato, Eiki Kamata
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Publication number: 20230238219Abstract: This plasma processing apparatus for performing plasma processing on an end part of a substrate includes a processing container, a substrate supporting member configured to support a portion of the substrate and to which a high frequency power is applied, at least a side of the substrate supporting member being composed of a dielectric, an opposing dielectric member composed of a dielectric and disposed to oppose the substrate supporting member, and a gas supply configured to supply a processing gas for generating plasma on at least the end part of the substrate. The plasma processing apparatus further includes a side ground electrode provided at a side of the substrate so as to be close to the substrate to such an extent that an electrical coupling is formed between an end surface of the substrate and the side ground electrode, the side ground electrode having a ground potential.Type: ApplicationFiled: March 29, 2021Publication date: July 27, 2023Inventors: Eiki KAMATA, Taro IKEDA, Satoru KAWAKAMI, Takumi KABE
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Publication number: 20230238217Abstract: A plasma processing apparatus includes: a processing container; a ceiling plate that constitutes a ceiling wall of the processing container, is formed of a first dielectric, and has an opening formed in the first dielectric; at least one transmissive window disposed in the opening and formed of a second dielectric having a second permittivity greater than a first permittivity of the first dielectric; and at least one electromagnetic wave supplier configured to supply electromagnetic waves toward the at least one transmissive window.Type: ApplicationFiled: January 19, 2023Publication date: July 27, 2023Inventors: Koji KOTANI, Eiki KAMATA, Taro IKEDA
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Patent number: 11705310Abstract: A plasma probe device includes: an antenna installed in an opening portion formed in a wall of a processing container via a seal member that seals between a vacuum space and an atmospheric space; and a light transmission portion installed inside the antenna or forming at least a portion of the antenna, and configured to transmit emission of plasma generated in the vacuum space to the atmospheric space.Type: GrantFiled: August 28, 2020Date of Patent: July 18, 2023Assignee: TOKYO ELECTRON LIMITEDInventors: Taro Ikeda, Mikio Sato, Eiki Kamata