Patents by Inventor Masahide Iwasaki

Masahide Iwasaki 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: 20150159269
    Abstract: Provided is a plasma processing apparatus comprising an exhaust path extending from the exhaust hole to the pump, wherein the pump is configured to depressurize inside of the processing container and the exhausting path, wherein the exhaust path includes a horizontally linearly extended portion, wherein the horizontally linearly extended portion of the exhaust path has a rectangular or oval cross-section having a horizontal length longer than a vertical length; wherein the plasma processing apparatus further includes a pressure control valve disposed in the horizontally linearly extended portion of the exhaust path; and wherein the pressure control valve is formed of a pressure control valve plate having substantially same shape and size as those of the cross-section and a shaft formed in the pressure control valve along the horizontal length of the cross-section, in such a manner that the pressure control valve plate rotates about the shaft.
    Type: Application
    Filed: January 30, 2015
    Publication date: June 11, 2015
    Inventors: Toshihisa NOZAWA, Shinji KOMOTO, Masahide IWASAKI
  • Publication number: 20150159270
    Abstract: Provided is a plasma processing apparatus comprising an exhaust path extending from the exhaust hole to the pump, wherein the pump is configured to depressurize inside of the processing container and the exhausting path, wherein the exhaust path includes a horizontally linearly extended portion, wherein the horizontally linearly extended portion of the exhaust path has a rectangular or oval cross-section having a horizontal length longer than a vertical length; wherein the plasma processing apparatus further includes a pressure control valve disposed in the horizontally linearly extended portion of the exhaust path; and wherein the pressure control valve is formed of a pressure control valve plate having substantially same shape and size as those of the cross-section and a shaft formed in the pressure control valve along the horizontal length of the cross-section, in such a manner that the pressure control valve plate rotates about the shaft.
    Type: Application
    Filed: January 30, 2015
    Publication date: June 11, 2015
    Inventors: Toshihisa NOZAWA, Shinji KOMOTO, Masahide IWASAKI
  • Publication number: 20150155141
    Abstract: A plasma processing apparatus of the present disclosure includes a processing container provided with an opening to carry an object to be processed (“workpiece”) into or out of a chamber adjacent to the processing container; a microwave introducing mechanism configured to introduce microwaves into the processing container; an exhaust device configured to evacuate the processing container; and a thermal insulating member provided between an outer surface of a gate valve that is provided near the opening and the chamber adjacent to the processing container. The thermal insulating member is coated with a conductive film at least on a surface of the thermal insulating member facing the outer surface of the gate valve, a surface of the thermal insulating member facing the chamber adjacent to the processing container, and a surface of the thermal insulating member exposed to outer air.
    Type: Application
    Filed: December 2, 2014
    Publication date: June 4, 2015
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yasuo KOBAYASHI, Masahide IWASAKI, Koji YAMAGISHI
  • Patent number: 8973527
    Abstract: A plasma processing apparatus is provided with a first exhaust path which extends downward from an exhaust hole; a second exhaust path which is connected to a downstream end portion of the first exhaust path in the exhausting direction and extends in a direction perpendicular to a direction in which the first exhaust path extends, and whose cross-section, which orthogonally intersects with the exhausting direction, is horizontally long such that a widthwise length is greater than a vertical length in the cross-section; a third exhaust path which is connected to a downstream end portion of the second exhaust path in the exhausting direction and extends in a direction perpendicular to the direction in which the second exhaust path extends; a pump which is connected to a downstream end portion of the third exhaust path in the exhausting direction and depressurizes an inside of a processing container; a pressure control valve which is provided in the second exhaust path, and comprises a pressure control valve pla
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: March 10, 2015
    Assignee: Tokyo Electron Limited
    Inventors: Toshihisa Nozawa, Shinji Komoto, Masahide Iwasaki
  • Patent number: 8967082
    Abstract: A plasma processing apparatus 31 includes a processing chamber 32; a gas supply unit 33 for supplying a plasma processing gas into a processing chamber 32; a mounting table 34 configured to hold the target substrate W thereon; a plasma generating device 39 configured to generate plasma within the processing chamber 32; and a gas supply device 61. The gas supply device 61 includes a head unit 62 configured to move between a first position above the mounting table 34 and a second position different from the first position and to supply a gas, and the head unit 62 is configured to supply a film forming gas to a small-volume region formed between the mounting table 34 and the head unit 62 when the head unit 62 is positioned at the first position and to adsorb the film forming gas on the target substrate W.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: March 3, 2015
    Assignee: Tokyo Electron Limited
    Inventors: Masahide Iwasaki, Toshihisa Nozawa
  • Publication number: 20150007774
    Abstract: A processing chamber accommodating a mounting table includes a first region and a second region. As the mounting table rotates, a substrate mounting region of the mounting table moves in a circumferential direction around the axis to pass through the first region and the second region. A first gas supply unit supplies a precursor gas to the first region from an injection unit disposed to face the mounting table. An exhaust outlet exhausts an exhaust port formed to extend along a closed path surrounding the exhaust outlet. A second gas supply unit supplies purge gas from an injection port formed to extend along a closed path surrounding the exhaust port. A plasma generation unit generates plasma from a reaction gas in the second region. An angular range of the second region is larger than an angular range of the first region.
    Type: Application
    Filed: February 12, 2013
    Publication date: January 8, 2015
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Masahide Iwasaki, Satoshi Yonekura, Toshihiko Iwao
  • Publication number: 20140290860
    Abstract: A plasma process apparatus that utilizes plasma so as to perform a predetermined process on a substrate, and includes a process chamber that houses a substrate subjected to the predetermined plasma process; a microwave generator; a dielectric window attached to the process chamber and provided with a concave portion provided at an outer surface of the dielectric window opposite to the process chamber and a through hole penetrating the dielectric window to the process chamber; a microwave transmission line; and a first process gas supplying portion including a gas conduit including a first portion provided at a front end and a second portion having a larger diameter than the first portion, the gas conduit being inserted from outside of the process chamber such that the first portion is inserted in the through hole and the second portion is inserted in the concave portion.
    Type: Application
    Filed: April 21, 2014
    Publication date: October 2, 2014
    Applicant: Tokyo Electron Limited
    Inventor: Masahide IWASAKI
  • Patent number: 8815014
    Abstract: A method and system for plasma-assisted thin film vapor deposition on a substrate is described. The system includes a process chamber including a first process space having a first volume, a substrate stage coupled to the process chamber and configured to support a substrate and expose the substrate to the first process space, a plasma generation system coupled to the process chamber and configured to generate plasma in at least a portion of the first process space, and a vacuum pumping system coupled to the process chamber and configured to evacuate at least a portion of the first process space. The system further includes a process volume adjustment mechanism coupled to the process chamber and configured to create a second process space that includes at least a part of the first process space and that has a second volume less than the first volume, the substrate being exposed to the second process space.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: August 26, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Jacques Faguet, Masahide Iwasaki, Toshihisa Nozawa
  • Publication number: 20140174660
    Abstract: The microwave plasma processing apparatus includes a power feeding rod that applies high frequency wave for RF bias, the upper end of which is connected to a susceptor, and the lower end of which is connected to a high frequency output terminal of a matcher in a matching unit; a cylindrical external conductor that encloses around the power feeding rod serving as an internal conductor; and a coaxial line. The coaxial line is installed with a choke mechanism configured to block undesired microwave that enters the line from a plasma producing space in a chamber, and leakage of the microwave to an RF feeding line is prevented in the middle of the line, thereby suppressing the microwave leakage.
    Type: Application
    Filed: June 29, 2012
    Publication date: June 26, 2014
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Masahide Iwasaki
  • Patent number: 8628640
    Abstract: A plasma processing unit of the present invention includes a processing container whose inner pressure can be reduced, a first electrode arranged in the processing container, a process gas supplying unit that supplies a process gas into the processing container, a high-frequency electric power source that outputs high-frequency electric power having a frequency in a VHF band, a matching unit electrically connected to the high-frequency electric power source and the first electrode for impedance matching, and a transmission line that transmits the high-frequency electric power from the high-frequency electric power source to the matching unit. A substrate to be processed is adapted to be arranged in the processing container. The high-frequency electric power transmitted to the first electrode is adapted to generate plasma in such a manner that the substrate to be processed can undergo a plasma process by means of the plasma.
    Type: Grant
    Filed: February 11, 2004
    Date of Patent: January 14, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Toshihiro Hayami, Masahide Iwasaki, Junichi Takahira, Kazuyoshi Watanabe, Shinichi Komatsu, Yuichi Sasaki
  • Patent number: 8262848
    Abstract: A plasma processing apparatus includes a worktable in a process chamber to horizontally place a target substrate thereon. A plasma generation space is defined above and around the worktable within the process chamber. The plasma generation space includes a peripheral plasma region and a main plasma region respectively located outside and inside an outer edge of the target substrate placed on the worktable. The apparatus further includes a magnetic field forming mechanism configured to form a magnetic field within the peripheral plasma region. The magnetic field includes magnetic force lines extending through the peripheral plasma region between a start position and an end position, at least one of which is located radially inside a sidewall of the process chamber.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: September 11, 2012
    Assignee: Tokyo Electron Limited
    Inventors: Masahide Iwasaki, Tomoaki Ukei
  • Publication number: 20120186521
    Abstract: A plasma processing apparatus 31 includes a processing chamber 32; a gas supply unit 33 for supplying a plasma processing gas into a processing chamber 32; a mounting table 34 configured to hold the target substrate W thereon; a plasma generating device 39 configured to generate plasma within the processing chamber 32; and a gas supply device 61. The gas supply device 61 includes a head unit 62 configured to move between a first position above the mounting table 34 and a second position different from the first position and to supply a gas, and the head unit 62 is configured to supply a film forming gas to a small-volume region formed between the mounting table 34 and the head unit 62 when the head unit 62 is positioned at the first position and to adsorb the film forming gas on the target substrate W.
    Type: Application
    Filed: September 14, 2010
    Publication date: July 26, 2012
    Applicant: Tokyo Electron Limited
    Inventors: Masahide Iwasaki, Toshihisa Nozawa
  • Patent number: 8182869
    Abstract: A method for controlling a temperature of a mounting table includes a first and a second temperature control mode in which a first and a second coolant passageway of a coolant circulator are connected in parallel between an output port and a return port of the coolant circulator. The first temperature control mode includes: making a part of a coolant of a reference temperature flow in the first coolant passageway after raising or lowering the temperature thereof to a desired set temperature; and making a residual coolant flow in the second coolant passageway while substantially maintaining the reference temperature thereof. The second temperature control mode includes: making a part of the coolant flow in the first coolant passageway while substantially maintaining the reference temperature thereof; and making a residual coolant flow in the second coolant passageway while substantially maintaining the reference temperature thereof.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: May 22, 2012
    Assignee: Tokyo Electron Limited
    Inventor: Masahide Iwasaki
  • Publication number: 20120111427
    Abstract: A plasma processing apparatus is provided with a first exhaust path which extends downward from an exhaust hole; a second exhaust path which is connected to a downstream end portion of the first exhaust path in the exhausting direction and extends in a direction perpendicular to a direction in which the first exhaust path extends, and whose cross-section, which orthogonally intersects with the exhausting direction, is horizontally long such that a widthwise length is greater than a vertical length in the cross-section; a third exhaust path which is connected to a downstream end portion of the second exhaust path in the exhausting direction and extends in a direction perpendicular to the direction in which the second exhaust path extends; a pump which is connected to a downstream end portion of the third exhaust path in the exhausting direction and depressurizes an inside of a processing container; a pressure control valve which is provided in the second exhaust path, and comprises a pressure control valve pla
    Type: Application
    Filed: August 27, 2009
    Publication date: May 10, 2012
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Toshihisa Nozawa, Shinji Komoto, Masahide Iwasaki
  • Publication number: 20110135842
    Abstract: A method and system for plasma-assisted thin film vapor deposition on a substrate is described. The system includes a process chamber including a first process space having a first volume, a substrate stage coupled to the process chamber and configured to support a substrate and expose the substrate to the first process space, a plasma generation system coupled to the process chamber and configured to generate plasma in at least a portion of the first process space, and a vacuum pumping system coupled to the process chamber and configured to evacuate at least a portion of the first process space. The system further includes a process volume adjustment mechanism coupled to the process chamber and configured to create a second process space that includes at least a part of the first process space and that has a second volume less than the first volume, the substrate being exposed to the second process space.
    Type: Application
    Filed: February 10, 2011
    Publication date: June 9, 2011
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Jacques FAGUET, Masahide Iwasaki, Toshihisa Nozawa
  • Publication number: 20110126765
    Abstract: A parallel resonance frequency can be adjusted in order to stably and securely block different high frequency noises flowing into a line such as a power feed line or a signal line from electric members including a high frequency electrode within a processing chamber. A filter 102(1) coaxially accommodates a coil 104(1) within a cylindrical outer conductor 110, and a ring member 122 is coaxially installed between the coil 104(1) and the outer conductor 110. The ring-shaped member 122 may be a plate body of a circular ring shape on a plane orthogonal to an axial direction of the outer conductor 110 and made of a conductor such as cupper or aluminum and electrically connected with the outer conductor 110 while electrically insulated from the coil 104(1).
    Type: Application
    Filed: November 22, 2010
    Publication date: June 2, 2011
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yohei Yamazawa, Naoki Matsumoto, Masahide Iwasaki, Naohiko Okunishi
  • Publication number: 20110068087
    Abstract: A plasma processing apparatus includes a worktable in a process chamber to horizontally place a target substrate thereon. A plasma generation space is defined above and around the worktable within the process chamber. The plasma generation space includes a peripheral plasma region and a main plasma region respectively located outside and inside an outer edge of the target substrate placed on the worktable. The apparatus further includes a magnetic field forming mechanism configured to form a magnetic field within the peripheral plasma region. The magnetic field includes magnetic force lines extending through the peripheral plasma region between a start position and an end position, at least one of which is located radially inside a sidewall of the process chamber.
    Type: Application
    Filed: November 22, 2010
    Publication date: March 24, 2011
    Inventors: Masahide Iwasaki, Tomoaki Ukei
  • Patent number: 7846293
    Abstract: A plasma processing apparatus includes a worktable in a process chamber to horizontally place a target substrate thereon. A plasma generation space is defined above and around the worktable within the process chamber. The plasma generation space includes a peripheral plasma region and a main plasma region respectively located outside and inside an outer edge of the target substrate placed on the worktable. The apparatus further includes a magnetic field forming mechanism configured to form a magnetic field within the peripheral plasma region. The magnetic field includes magnetic force lines extending through the peripheral plasma region between a start position and an end position, at least one of which is located radially inside a sidewall of the process chamber.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: December 7, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Masahide Iwasaki, Tomoaki Ukei
  • Publication number: 20100224355
    Abstract: A device for controlling a temperature of a mounting table for mounting thereon a target object includes a first and a second coolant passageway provided at the mounting table, a coolant circulator for circulating a coolant in the first and the second coolant passageway, channels, a coolant temperature controller for raising or lowering the temperature of the coolant, a channel switching unit for connecting, blocking and changing the channels among a first to a fourth port; and a channel controller. Various modes for controlling a temperature of the mounting table can be obtained by combining an ON/OFF state of the heating operation in the coolant temperature controller with ON/OFF states of opening/closing valves in the channel switching unit under the control of the channel controller.
    Type: Application
    Filed: May 17, 2010
    Publication date: September 9, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Masahide IWASAKI
  • Patent number: 7789962
    Abstract: A device for controlling a temperature of a mounting table for mounting thereon a target object includes a first and a second coolant passageway provided at the mounting table, a coolant circulator for circulating a coolant in the first and the second coolant passageway, channels, a coolant temperature controller for raising or lowering the temperature of the coolant, a channel switching unit for connecting, blocking and changing the channels among a first to a fourth port; and a channel controller. Various modes for controlling a temperature of the mounting table can be obtained by combining an ON/OFF state of the heating operation in the coolant temperature controller with ON/OFF states of opening/closing valves in the channel switching unit under the control of the channel controller.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: September 7, 2010
    Assignee: Tokyo Electron Limited
    Inventor: Masahide Iwasaki