Patents by Inventor Kiwamu Tsukamoto

Kiwamu Tsukamoto 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).

  • Patent number: 10446404
    Abstract: Provided is a method of adjusting an electron-beam irradiated area in an electron beam irradiation apparatus that deflects an electron beam with a deflector to irradiate an object with the electron beam, the method including: emitting an electron beam while changing an irradiation position on an adjustment plate by controlling the deflector in accordance with an electron beam irradiation recipe, the adjustment plate detecting a current corresponding to the emitted electron beam; acquiring a current value detected from the adjustment plate; forming image data corresponding to the acquired current value; determining whether the electron-beam irradiated area is appropriate based on the formed image data; and updating the electron beam irradiation recipe when the electron-beam irradiated area is determined not to be appropriate.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: October 15, 2019
    Assignee: EBARA CORPORATION
    Inventors: Ryo Tajima, Masahiro Hatakeyama, Kenichi Suematsu, Kiwamu Tsukamoto, Kenji Watanabe, Shoji Yoshikawa, Shinichi Okada, Kenji Terao
  • Patent number: 10157722
    Abstract: An inspection device for inspecting a surface of an inspection object using a beam includes a beam generator capable of generating one of either charge particles or an electromagnetic wave as a beam, a primary optical system capable of guiding and irradiating the beam to the inspection object supported within a working chamber, a secondary optical system capable of including a first movable numerical aperture and a first detector which detects secondary charge particles generated from the inspection object, the secondary charge particles passing through the first movable numerical aperture, an image processing system capable of forming an image based on the secondary charge particles detected by the first detector; and a second detector arranged between the first movable numerical aperture and the first detector and which detects a location and shape at a cross over location of the secondary charge particles generated from the inspection object.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: December 18, 2018
    Assignee: EBARA CORPORATION
    Inventors: Masahiro Hatakeyama, Shoji Yoshikawa, Takeshi Murakami, Kenji Watanabe, Yoshihiko Naito, Yasushi Toma, Tsutomu Karimata, Takehide Hayashi, Kiwamu Tsukamoto, Tatsuya Kohama, Noboru Kobayashi
  • Publication number: 20180233374
    Abstract: Provided is a method of adjusting an electron-beam irradiated area in an electron beam irradiation apparatus that deflects an electron beam with a deflector to irradiate an object with the electron beam, the method including: emitting an electron beam while changing an irradiation position on an adjustment plate by controlling the deflector in accordance with an electron beam irradiation recipe, the adjustment plate detecting a current corresponding to the emitted electron beam; acquiring a current value detected from the adjustment plate; forming image data corresponding to the acquired current value; determining whether the electron-beam irradiated area is appropriate based on the formed image data; and updating the electron beam irradiation recipe when the electron-beam irradiated area is determined not to be appropriate.
    Type: Application
    Filed: January 17, 2018
    Publication date: August 16, 2018
    Inventors: Ryo TAJIMA, Masahiro HATAKEYAMA, Kenichi SUEMATSU, Kiwamu TSUKAMOTO, Kenji WATANABE, Shoji YOSHIKAWA, Shinichi OKADA, Kenji TERAO
  • Patent number: 9852878
    Abstract: A surface processing apparatus is an apparatus which performs surface processing on an inspection object 20 by irradiating the inspection object with an electron beam. A surface processing apparatus includes: an electron source 10 (including lens system that controls beam shape of electron beam) which generates an electron beam; a stage 30 on which an inspection object 20 to be irradiated with the electron beam is set; and an optical microscope 110 for checking a position to be irradiated with the electron beam. The current value of the electron beam which irradiates the inspection object 20 is set at 10 nA to 100 A.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: December 26, 2017
    Assignee: EBARA CORPORATION
    Inventors: Masahiro Hatakeyama, Kenichi Suematsu, Ryo Tajima, Kiwamu Tsukamoto, Kenji Terao, Shoji Yoshikawa
  • Patent number: 9601302
    Abstract: An inspection apparatus capable of facilitating reduction in cost of the apparatus is provided. The inspection apparatus includes: beam generation means for generating any of charged particles and electromagnetic waves as a beam; a primary optical system that guides the beam into an inspection object held on a movable stage in a working chamber and irradiates the inspection object with the beam; a secondary optical system that detects secondary charged particles occurring from the inspection object; and an image processing system that forms an image on the basis of the detected secondary charged particles. The inspection apparatus further includes: a linear motor that drives the movable stage; and a Helmholtz coil that causes a magnetic field for canceling a magnetic field caused by the linear motor when the movable stage is driven.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: March 21, 2017
    Assignee: EBARA CORPORATION
    Inventors: Shoji Yoshikawa, Kiwamu Tsukamoto, Takeshi Murakami, Masahiro Hatakeyama, Tsutomu Karimata
  • Publication number: 20160307726
    Abstract: An inspection device for inspecting a surface of an inspection object using a beam includes a beam generator capable of generating one of either charge particles or an electromagnetic wave as a beam, a primary optical system capable of guiding and irradiating the beam to the inspection object supported within a working chamber, a secondary optical system capable of including a first movable numerical aperture and a first detector which detects secondary charge particles generated from the inspection object, the secondary charge particles passing through the first movable numerical aperture, an image processing system capable of forming an image based on the secondary charge particles detected by the first detector; and a second detector arranged between the first movable numerical aperture and the first detector and which detects a location and shape at a cross over location of the secondary charge particles generated from the inspection object.
    Type: Application
    Filed: June 28, 2016
    Publication date: October 20, 2016
    Applicant: EBARA CORPORATION
    Inventors: Masahiro Hatakeyama, Shoji Yoshikawa, Takeshi Murakami, Kenji Watanabe, Yoshihiko Naito, Yasushi Toma, Tsutomu Karimata, Takehide Hayashi, Kiwamu Tsukamoto, Tatsuya Kohama, Noboru Kobayashi
  • Publication number: 20150371813
    Abstract: A surface processing apparatus is an apparatus which performs surface processing on an inspection object 20 by irradiating the inspection object with an electron beam. A surface processing apparatus includes: an electron source 10 (including lens system that controls beam shape of electron beam) which generates an electron beam; a stage 30 on which an inspection object 20 to be irradiated with the electron beam is set; and an optical microscope 110 for checking a position to be irradiated with the electron beam. The current value of the electron beam which irradiates the inspection object 20 is set at 10 nA to 100 A.
    Type: Application
    Filed: June 23, 2015
    Publication date: December 24, 2015
    Inventors: Masahiro HATAKEYAMA, Kenichi SUEMATSU, Ryo TAJIMA, Kiwamu TSUKAMOTO, Kenji TERAO, Shoji YOSHIKAWA
  • Publication number: 20150340193
    Abstract: An inspection apparatus capable of facilitating reduction in cost of the apparatus is provided. The inspection apparatus includes: beam generation means for generating any of charged particles and electromagnetic waves as a beam; a primary optical system that guides the beam into an inspection object held on a movable stage in a working chamber and irradiates the inspection object with the beam; a secondary optical system that detects secondary charged particles occurring from the inspection object; and an image processing system that forms an image on the basis of the detected secondary charged particles. The inspection apparatus further includes: a linear motor that drives the movable stage; and a Helmholtz coil that causes a magnetic field for canceling a magnetic field caused by the linear motor when the movable stage is driven.
    Type: Application
    Filed: July 30, 2015
    Publication date: November 26, 2015
    Inventors: Shoji YOSHIKAWA, Kiwamu TSUKAMOTO, Takeshi MURAKAMI, Masahiro HATAKEYAMA, Tsutomu KARIMATA
  • Patent number: 9134261
    Abstract: An inspection apparatus capable of facilitating reduction in cost of the apparatus is provided. The inspection apparatus includes: beam generation means for generating any of charged particles and electromagnetic waves as a beam; a primary optical system that guides the beam into an inspection object held on a movable stage in a working chamber and irradiates the inspection object with the beam; a secondary optical system that detects secondary charged particles occurring from the inspection object; and an image processing system that forms an image on the basis of the detected secondary charged particles. The inspection apparatus further includes: a linear motor that drives the movable stage; and a Helmholtz coil that causes a magnetic field for canceling a magnetic field caused by the linear motor when the movable stage is driven.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: September 15, 2015
    Assignee: EBARA CORPORATION
    Inventors: Shoji Yoshikawa, Kiwamu Tsukamoto, Takeshi Murakami, Masahiro Hatakeyama, Tsutomu Karimata
  • Patent number: 9105444
    Abstract: An electro-optical inspection apparatus is provided that is capable of preventing adhesion of dust or particles to the sample surface as much as possible. A stage (100) on which a sample (200) is placed is disposed inside a vacuum chamber (112) that can be evacuated to vacuum, and a dust collecting electrode (122) is disposed to surround a periphery of the sample (200). The dust collecting electrode (122) is applied with a voltage having the same polarity as a voltage applied to the sample (200) and an absolute value that is the same or larger than an absolute value of the voltage. Thus, because dust or particles such as particles adhere to the dust collecting electrode (122), adhesion of the dust or particles to the sample surface can be reduced. Instead of using the dust collecting electrode, it is possible to form a recess on a wall of the vacuum chamber containing the stage, or to dispose on the wall a metal plate having a mesh structure to which a predetermined voltage is applied.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: August 11, 2015
    Assignee: EBARA CORPORATION
    Inventors: Kenji Watanabe, Masahiro Hatakeyama, Yoshihiko Naito, Tatsuya Kohama, Kenji Terao, Takeshi Murakami, Takehide Hayashi, Kiwamu Tsukamoto, Hiroshi Sobukawa, Norio Kimura
  • Publication number: 20150097116
    Abstract: An inspection apparatus includes: beam generation means for generating any of charged particles and electromagnetic waves as a beam; a primary optical system that guides the beam into an inspection object held in a working chamber and irradiates the inspection object with the beam; a secondary optical system that detects secondary charged particles occurring from the inspection object; and an image processing system that forms an image on the basis of the detected secondary charged particles. The primary optical system includes a photoelectron generator having a photoelectronic surface. The base material of the photoelectronic surface is made of material having a higher thermal conductivity than the thermal conductivity of quartz.
    Type: Application
    Filed: December 16, 2014
    Publication date: April 9, 2015
    Inventors: Masahiro HATAKEYAMA, Yasushi TOMA, Shoji YOSHIKAWA, Kiwamu TSUKAMOTO
  • Patent number: 8946629
    Abstract: An inspection apparatus includes: beam generation means for generating any of charged particles and electromagnetic waves as a beam; a primary optical system that guides the beam into an inspection object held in a working chamber and irradiates the inspection object with the beam; a secondary optical system that detects secondary charged particles occurring from the inspection object; and an image processing system that forms an image on the basis of the detected secondary charged particles. The primary optical system includes a photoelectron generator having a photoelectronic surface. The base material of the photoelectronic surface is made of material having a higher thermal conductivity than the thermal conductivity of quartz.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: February 3, 2015
    Assignee: Ebara Corporation
    Inventors: Masahiro Hatakeyama, Yasushi Toma, Shoji Yoshikawa, Kiwamu Tsukamoto
  • Publication number: 20140319345
    Abstract: An inspection apparatus includes: beam generation means for generating any of charged particles and electromagnetic waves as a beam; a primary optical system that guides the beam into an inspection object held in a working chamber and irradiates the inspection object with the beam; a secondary optical system that detects secondary charged particles occurring from the inspection object; and an image processing system that forms an image on the basis of the detected secondary charged particles. The primary optical system includes a photoelectron generator having a photoelectronic surface. The base material of the photoelectronic surface is made of material having a higher thermal conductivity than the thermal conductivity of quartz.
    Type: Application
    Filed: April 22, 2014
    Publication date: October 30, 2014
    Applicant: EBARA CORPORATION
    Inventors: Masahiro HATAKEYAMA, Yasushi TOMA, Shoji YOSHIKAWA, Kiwamu TSUKAMOTO
  • Publication number: 20140312227
    Abstract: An inspection apparatus capable of facilitating reduction in cost of the apparatus is provided. The inspection apparatus includes: beam generation means for generating any of charged particles and electromagnetic waves as a beam; a primary optical system that guides the beam into an inspection object held on a movable stage in a working chamber and irradiates the inspection object with the beam; a secondary optical system that detects secondary charged particles occurring from the inspection object; and an image processing system that forms an image on the basis of the detected secondary charged particles. The inspection apparatus further includes: a linear motor that drives the movable stage; and a Helmholtz coil that causes a magnetic field for canceling a magnetic field caused by the linear motor when the movable stage is driven.
    Type: Application
    Filed: April 21, 2014
    Publication date: October 23, 2014
    Applicant: EBARA CORPORATION
    Inventors: Shoji YOSHIKAWA, Kiwamu TSUKAMOTO
  • Patent number: 8742344
    Abstract: An inspection apparatus includes: beam generation means for generating any of charged particles and electromagnetic waves as a beam; a primary optical system that guides the beam into an inspection object held in a working chamber and irradiates the inspection object with the beam; a secondary optical system that detects secondary charged particles occurring from the inspection object; and an image processing system that forms an image on the basis of the detected secondary charged particles. The primary optical system includes a photoelectron generator having a photoelectronic surface. The base material of the photoelectronic surface is made of material having a higher thermal conductivity than the thermal conductivity of quartz. A central portion of the inspection object is provided with a central flat portion 390. The periphery of the central flat portion 390 is provided with peripheral flat portion 392 via a step 391. The periphery of the step 391 is provided with an electric field correction plate 400.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: June 3, 2014
    Assignee: Ebara Corporation
    Inventors: Masahiro Hatakeyama, Yasushi Toma, Shoji Yoshikawa, Kiwamu Tsukamoto
  • Publication number: 20140091215
    Abstract: An electro-optical inspection apparatus is provided that is capable of preventing adhesion of dust or particles to the sample surface as much as possible. A stage (100) on which a sample (200) is placed is disposed inside a vacuum chamber (112) that can be evacuated to vacuum, and a dust collecting electrode (122) is disposed to surround a periphery of the sample (200). The dust collecting electrode (122) is applied with a voltage having the same polarity as a voltage applied to the sample (200) and an absolute value that is the same or larger than an absolute value of the voltage. Thus, because dust or particles such as particles adhere to the dust collecting electrode (122), adhesion of the dust or particles to the sample surface can be reduced. Instead of using the dust collecting electrode, it is possible to form a recess on a wall of the vacuum chamber containing the stage, or to dispose on the wall a metal plate having a mesh structure to which a predetermined voltage is applied.
    Type: Application
    Filed: December 4, 2013
    Publication date: April 3, 2014
    Applicant: Ebara Corporation
    Inventors: Kenji WATANABE, Masahiro HATAKEYAMA, Yoshihiko NAITO, Tatsuya KOHAMA, Kenji TERAO, Takeshi MURAKAMI, Takehide HAYASHI, Kiwamu TSUKAMOTO, Hiroshi SOBUKAWA, Norio KIMURA
  • Publication number: 20140077078
    Abstract: An inspection apparatus includes: beam generation means for generating any of charged particles and electromagnetic waves as a beam; a primary optical system that guides the beam into an inspection object held in a working chamber and irradiates the inspection object with the beam; a secondary optical system that detects secondary charged particles occurring from the inspection object; and an image processing system that forms an image on the basis of the detected secondary charged particles. The primary optical system includes a photoelectron generator having a photoelectronic surface. The base material of the photoelectronic surface is made of material having a higher thermal conductivity than the thermal conductivity of quartz.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 20, 2014
    Inventors: Masahiro HATAKEYAMA, Yasushi TOMA, Shoji YOSHIKAWA, Kiwamu TSUKAMOTO
  • Publication number: 20140014848
    Abstract: An inspection device for inspecting a surface of an inspection object using a beam includes a beam generator capable of generating one of either charge particles or an electromagnetic wave as a beam, a primary optical system capable of guiding and irradiating the beam to the inspection object supported within a working chamber, a secondary optical system capable of including a first movable numerical aperture and a first detector which detects secondary charge particles generated from the inspection object, the secondary charge particles passing through the first movable numerical aperture, an image processing system capable of forming an image based on the secondary charge particles detected by the first detector; and a second detector arranged between the first movable numerical aperture and the first detector and which detects a location and shape at a cross over location of the secondary charge particles generated from the inspection object.
    Type: Application
    Filed: July 19, 2013
    Publication date: January 16, 2014
    Applicant: EBARA CORPORATION
    Inventors: Masahiro Hatakeyama, Shoji Yoshikawa, Takeshi Murakami, Kenji Watanabe, Yoshihiko Naito, Yasushi Toma, Tsutomu Karimata, Takehide Hayashi, Kiwamu Tsukamoto, Tatsuya Kohama, Noboru Kobayashi
  • Patent number: 8624182
    Abstract: An electro-optical inspection apparatus prevents adhesion of dust or particles to a sample surface, wherein a stage on which a sample is placed is disposed inside a vacuum chamber that can be evacuated, and a dust collecting electrode is disposed to surround a periphery of the sample. The dust collecting electrode is applied with a voltage having the same polarity as a voltage applied to the sample and an absolute value that is the same or larger than an absolute value of the voltage. Because dust or particles adhere to the dust collecting electrode, adhesion of the dust or particles to the sample surface can be reduced. Instead of using the dust collecting electrode, it is possible to form a recess on a wall of the vacuum chamber, or to dispose on the wall a metal plate having a mesh structure to which a predetermined voltage is applied.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: January 7, 2014
    Assignee: Ebara Corporation
    Inventors: Kenji Watanabe, Masahiro Hatakeyama, Yoshihiko Naito, Tatsuya Kohama, Kenji Terao, Takeshi Murakami, Takehide Hayashi, Kiwamu Tsukamoto, Hiroshi Sobukawa, Norio Kimura
  • Patent number: 8497476
    Abstract: An inspection device for inspecting a surface of an inspection object using a beam includes a beam generator capable of generating one of either charge particles or an electromagnetic wave as a beam, a primary optical system capable of guiding and irradiating the beam to the inspection object supported within a working chamber, a secondary optical system capable of including a first movable numerical aperture and a first detector which detects secondary charge particles generated from the inspection object, the secondary charge particles passing through the first movable numerical aperture, an image processing system capable of forming an image based on the secondary charge particles detected by the first detector; and a second detector arranged between the first movable numerical aperture and the first detector and which detects a location and shape at a cross over location of the secondary charge particles generated from the inspection object.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: July 30, 2013
    Assignee: Ebara Corporation
    Inventors: Masahiro Hatakeyama, Shoji Yoshikawa, Takeshi Murakami, Kenji Watanabe, Yoshihiko Naito, Yasushi Toma, Tsutomu Karimata, Takehide Hayashi, Kiwamu Tsukamoto, Tatsuya Kohama, Noboru Kobayashi