Patents by Inventor Naomasa Suzuki

Naomasa Suzuki 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: 11852599
    Abstract: Provided is an image processing system capable of estimating a three-dimensional shape of a semiconductor pattern or a particle by solving problems of measurement reduction in a height direction and taking an enormous amount of time at a time of acquiring learning data. The image processing system according to the disclosure stores a detectable range of a detector provided in a charged particle beam device in a storage device in advance, generates a simulated image of a three-dimensional shape pattern using the detectable range, and learns a relationship between the simulated image and the three-dimensional shape pattern in advance.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: December 26, 2023
    Assignee: HITACHI HIGH-TECH CORPORATION
    Inventors: Nobuhiro Okai, Naomasa Suzuki, Muneyuki Fukuda
  • Publication number: 20230238212
    Abstract: Provided is an electron microscope for generating an observation image of a sample by using an electron beam in order to obtain a scanning electron microscope image by low angle backscattered electrons, which are backscattered electrons emitted at a low angle with respect to a sample surface, even for an electron microscope including an objective lens that leaks a magnetic field to a sample.
    Type: Application
    Filed: September 24, 2021
    Publication date: July 27, 2023
    Inventors: Hiroyasu SHICHI, Nobuhiro OKAI, Naomasa SUZUKI, Masanobu IEDA
  • Publication number: 20220042936
    Abstract: Provided is an image processing system capable of estimating a three-dimensional shape of a semiconductor pattern or a particle by solving problems of measurement reduction in a height direction and taking an enormous amount of time at a time of acquiring learning data. The image processing system according to the disclosure stores a detectable range of a detector provided in a charged particle beam device in a storage device in advance, generates a simulated image of a three-dimensional shape pattern using the detectable range, and learns a relationship between the simulated image and the three-dimensional shape pattern in advance.
    Type: Application
    Filed: July 22, 2021
    Publication date: February 10, 2022
    Inventors: Nobuhiro Okai, Naomasa Suzuki, Muneyuki Fukuda
  • Patent number: 11239042
    Abstract: The present disclosure aims at proposing a multi-beam irradiation device capable of correcting off-axis aberrations. In order to achieve the above object, a beam irradiation device is proposed, which includes a beam source which emits a plurality of beams; an objective lens (17) which focuses a beam on a sample; a first lens (16) which is arranged such that a lens main surface is positioned at an object point of the objective lens and deflects a plurality of incident beams toward an intersection point of a lens main surface of the objective lens and an optical axis; a second lens (15) which is arranged closer to a beam source side than the first lens and focuses the plurality of beams on a lens main surface of the first lens; and a third lens (14) which is arranged closer to the beam source side than the second lens and deflects the plurality of beams toward an intersection point of a lens main surface of the second lens and the optical axis.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: February 1, 2022
    Assignee: Hitachi High-Tech Corporation
    Inventors: Akira Ikegami, Yuta Kawamoto, Naomasa Suzuki, Manabu Yano, Yasushi Ebizuka, Naoma Ban
  • Patent number: 11211224
    Abstract: To improve detection efficiency of secondary particles without increasing a size of a charged particle beam apparatus, a charged particle beam apparatus according to the invention includes: a charged particle beam source configured to irradiate a sample with a primary particle beam; a scanning deflector configured to scan and deflect the primary particle beam to a desired position of the sample; and a detector configured to detect secondary particles emitted from the desired position. The charged particle beam apparatus further includes: a focusing lens electrode arranged coaxially with the primary particle beam and configured to generate a focusing electric field that is an electric field that focuses a trajectory of the secondary particles; and a mesh electrode configured to reduce leakage of the focusing electric field on a trajectory of the primary particle beam.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: December 28, 2021
    Assignee: HITACHI HIGH-TECH CORPORATION
    Inventors: Nobuhiro Okai, Daisuke Bizen, Tomoyasu Shojo, Naomasa Suzuki, Muneyuki Fukuda
  • Publication number: 20210249221
    Abstract: To improve detection efficiency of secondary particles without increasing a size of a charged particle beam apparatus, a charged particle beam apparatus according to the invention includes: a charged particle beam source configured to irradiate a sample with a primary particle beam; a scanning deflector configured to scan and deflect the primary particle beam to a desired position of the sample; and a detector configured to detect secondary particles emitted from the desired position. The charged particle beam apparatus further includes: a focusing lens electrode arranged coaxially with the primary particle beam and configured to generate a focusing electric field that is an electric field that focuses a trajectory of the secondary particles; and a mesh electrode configured to reduce leakage of the focusing electric field on a trajectory of the primary particle beam.
    Type: Application
    Filed: April 26, 2018
    Publication date: August 12, 2021
    Applicant: HITACHI HIGH-TECH CORPORATION
    Inventors: Nobuhiro OKAI, Daisuke BIZEN, Tomoyasu SHOJO, Naomasa SUZUKI, Muneyuki FUKUDA
  • Patent number: 10971328
    Abstract: This charged particle beam device is provided with: a plurality of detectors for detecting secondary particles, the detectors being disposed in a symmetrical manner around the optical axis of a primary charged particle beam closer to the charged particle source side than an objective lens; electrodes for forming an electric field oriented in directions corresponding to each of the plurality of detectors, the electrodes being provided on the travel routes of secondary particles from a sample to the detectors; and a control power supply for applying a voltage to the electrodes. Adjusting the voltage applied to each of the electrodes makes it possible to detect, upon deflecting, the secondary particles, and to control the range of azimuths of the secondary particles to be detected.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: April 6, 2021
    Assignee: Hitachi High-Tech Corporation
    Inventors: Takanori Kishimoto, Ichiro Tachibana, Naomasa Suzuki
  • Publication number: 20210027976
    Abstract: The present disclosure aims at proposing a multi-beam irradiation device capable of correcting off-axis aberrations. In order to achieve the above object, a beam irradiation device is proposed, which includes a beam source which emits a plurality of beams; an objective lens (17) which focuses a beam on a sample; a first lens (16) which is arranged such that a lens main surface is positioned at an object point of the objective lens and deflects a plurality of incident beams toward an intersection point of a lens main surface of the objective lens and an optical axis; a second lens (15) which is arranged closer to a beam source side than the first lens and focuses the plurality of beams on a lens main surface of the first lens; and a third lens (14) which is arranged closer to the beam source side than the second lens and deflects the plurality of beams toward an intersection point of a lens main surface of the second lens and the optical axis.
    Type: Application
    Filed: October 1, 2020
    Publication date: January 28, 2021
    Inventors: Akira IKEGAMI, Yuta KAWAMOTO, Naomasa SUZUKI, Manabu YANO, Yasushi EBIZUKA, Naoma BAN
  • Patent number: 10879037
    Abstract: To provide a charged particle beam device which enables observation and evaluation of the surface and the inside of a sample with low damage to the sample, the charged particle beam device has: a charged particle beam source 2; a sample table 9 in which the sample 210 is placed; a charged particle beam optical system which pulsates a charged particle beam 100 and irradiates the charged particle beam to the sample at an acceleration voltage within a range of 0 kV to 5 kV; a split distance selector 125 for selecting a measurement object of the sample; and a split distance setting unit 124 for setting a split distance in one line scanning of the charged particle beam on the sample.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: December 29, 2020
    Assignee: HITACHI HIGH-TECH CORPORATION
    Inventors: Natsuki Tsuno, Naomasa Suzuki, Atsushi Okita, Muneyuki Fukuda
  • Patent number: 10832886
    Abstract: The present disclosure aims at proposing a multi-beam irradiation device capable of correcting off-axis aberrations. In order to achieve the above object, a beam irradiation device is proposed, which includes a beam source which emits a plurality of beams; an objective lens (17) which focuses a beam on a sample; a first lens (16) which is arranged such that a lens main surface is positioned at an object point of the objective lens and deflects a plurality of incident beams toward an intersection point of a lens main surface of the objective lens and an optical axis; a second lens (15) which is arranged closer to a beam source side than the first lens and focuses the plurality of beams on a lens main surface of the first lens; and a third lens (14) which is arranged closer to the beam source side than the second lens and deflects the plurality of beams toward an intersection point of a lens main surface of the second lens and the optical axis.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: November 10, 2020
    Assignee: Hitachi High-Tech Corporation
    Inventors: Akira Ikegami, Yuta Kawamoto, Naomasa Suzuki, Manabu Yano, Yasushi Ebizuka, Naoma Ban
  • Publication number: 20200312606
    Abstract: This charged particle beam device is provided with: a plurality of detectors for detecting secondary particles, the detectors being disposed in a symmetrical manner around the optical axis of a primary charged particle beam closer to the charged particle source side than an objective lens; electrodes for forming an electric field oriented in directions corresponding to each of the plurality of detectors, the electrodes being provided on the travel routes of secondary particles from a sample to the detectors; and a control power supply for applying a voltage to the electrodes. Adjusting the voltage applied to each of the electrodes makes it possible to detect, upon deflecting, the secondary particles, and to control the range of azimuths of the secondary particles to be detected.
    Type: Application
    Filed: June 17, 2020
    Publication date: October 1, 2020
    Inventors: Takanori KISHIMOTO, Ichiro TACHIBANA, Naomasa SUZUKI
  • Patent number: 10734191
    Abstract: This charged particle beam device is provided with: a plurality of detectors for detecting secondary particles, the detectors being disposed in a symmetrical manner around the optical axis of a primary charged particle beam closer to the charged particle source side than an objective lens; electrodes for forming an electric field oriented in directions corresponding to each of the plurality of detectors, the electrodes being provided on the travel routes of secondary particles from a sample to the detectors; and a control power supply for applying a voltage to the electrodes. Adjusting the voltage applied to each of the electrodes makes it possible to detect, upon deflecting, the secondary particles, and to control the range of azimuths of the secondary particles to be detected.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: August 4, 2020
    Assignee: Hitachi High-Tech Corporation
    Inventors: Takanori Kishimoto, Ichiro Tachibana, Naomasa Suzuki
  • Publication number: 20190287754
    Abstract: The present disclosure aims at proposing a multi-beam irradiation device capable of correcting off-axis aberrations. In order to achieve the above object, a beam irradiation device is proposed, which includes a beam source which emits a plurality of beams; an objective lens (17) which focuses a beam on a sample; a first lens (16) which is arranged such that a lens main surface is positioned at an object point of the objective lens and deflects a plurality of incident beams toward an intersection point of a lens main surface of the objective lens and an optical axis; a second lens (15) which is arranged closer to a beam source side than the first lens and focuses the plurality of beams on a lens main surface of the first lens; and a third lens (14) which is arranged closer to the beam source side than the second lens and deflects the plurality of beams toward an intersection point of a lens main surface of the second lens and the optical axis.
    Type: Application
    Filed: March 4, 2019
    Publication date: September 19, 2019
    Inventors: Akira IKEGAMI, Yuta KAWAMOTO, Naomasa SUZUKI, Manabu YANO, Yasushi EBIZUKA, Naoma BAN
  • Patent number: 10269536
    Abstract: The objective of the present invention is to simultaneously achieve image observations at a high resolution using an electron microscope, and X-ray analysis at a high energy-resolution using a microcalorimeter. An X-ray detector is disposed at a position where the intensity of the magnetic field from an objective lens is weaker than the critical magnetic field of a material used in a thermal insulation shield for a superconducting transition-edge sensor or a microcalorimeter. In addition, an optical system for transmitting X-rays to the detector is inserted between a sample and the detector. Alternatively, a magnetic field shield for shielding the X-ray detector is used.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: April 23, 2019
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Satoshi Takada, Naomasa Suzuki, Kazuo Aoki, Takehiko Konno, Takayuki Hoshino
  • Publication number: 20190051490
    Abstract: To provide a charged particle beam device which enables observation and evaluation of the surface and the inside of a sample with low damage to the sample, the charged particle beam device has: a charged particle beam source 2; a sample table 9 in which the sample 210 is placed; a charged particle beam optical system which pulsates a charged particle beam 100 and irradiates the charged particle beam to the sample at an acceleration voltage within a range of 0 kV to 5 kV; a split distance selector 125 for selecting a measurement object of the sample; and a split distance setting unit 124 for setting a split distance in one line scanning of the charged particle beam on the sample.
    Type: Application
    Filed: April 27, 2016
    Publication date: February 14, 2019
    Inventors: Natsuki TSUNO, Naomasa SUZUKI, Atsushi OKITA, Muneyuki FUKUDA
  • Patent number: 10121632
    Abstract: Provided is a charged particle beam apparatus which includes a charged particle source, a sample table on which a sample is placed, a charged particle beam optical system that includes an objective lens and emits a charged particle beam emitted from the charged particle source onto the sample, a plurality of detectors which detect secondary particles emitted from the sample when being irradiated with the charged particle beam, and a rotation member which magnetically, electrically, or mechanically changes a detected azimuth angle of the secondary particles emitted from the sample.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: November 6, 2018
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Nobuhiro Okai, Natsuki Tsuno, Naomasa Suzuki, Tomoyasu Shojo
  • Publication number: 20180240643
    Abstract: The objective of the present invention is to simultaneously achieve image observations at a high resolution using an electron microscope, and X-ray analysis at a high energy-resolution using a microcalorimeter. An X-ray detector is disposed at a position where the intensity of the magnetic field from an objective lens is weaker than the critical magnetic field of a material used in a thermal insulation shield for a superconducting transition-edge sensor or a microcalorimeter. In addition, an optical system for transmitting X-rays to the detector is inserted between a sample and the detector. Alternatively, a magnetic field shield for shielding the X-ray detector is used.
    Type: Application
    Filed: March 25, 2015
    Publication date: August 23, 2018
    Inventors: Satoshi TAKADA, Naomasa SUZUKI, Kazuo AOKI, Takehiko KONNO, Takayuki HOSHINO
  • Publication number: 20180204706
    Abstract: This charged particle beam device is provided with: a plurality of detectors for detecting secondary particles, the detectors being disposed in a symmetrical manner around the optical axis of a primary charged particle beam closer to the charged particle source side than an objective lens; electrodes for forming an electric field oriented in directions corresponding to each of the plurality of detectors, the electrodes being provided on the travel routes of secondary particles from a sample to the detectors; and a control power supply for applying a voltage to the electrodes. Adjusting the voltage applied to each of the electrodes makes it possible to detect, upon deflecting, the secondary particles, and to control the range of azimuths of the secondary particles to be detected.
    Type: Application
    Filed: July 6, 2015
    Publication date: July 19, 2018
    Inventors: Takanori KISHIMOTO, Ichiro TACHIBANA, Naomasa SUZUKI
  • Publication number: 20170316915
    Abstract: Provided is a charged particle beam apparatus which includes a charged particle source, a sample table on which a sample is placed, a charged particle beam optical system that includes an objective lens and emits a charged particle beam emitted from the charged particle source onto the sample, a plurality of detectors which detect secondary particles emitted from the sample when being irradiated with the charged particle beam, and a rotation member which magnetically, electrically, or mechanically changes a detected azimuth angle of the secondary particles emitted from the sample.
    Type: Application
    Filed: April 14, 2017
    Publication date: November 2, 2017
    Inventors: Nobuhiro OKAI, Natsuki TSUNO, Naomasa SUZUKI, Tomoyasu SHOJO
  • Patent number: 9704687
    Abstract: The charged particle beam application device is provided with a charged particle source and an objective lens that converges charged particle beam generated by the charged particle source onto a sample. In this case, the charged particle beam application device is further provided with an aberration generating element installed between the charged particle beam source and the objective lens, a tilt-use deflector installed between the aberration generating element and the objective lens, a deflection aberration control unit for controlling the aberration generating element, a first electromagnetic field superposing multipole installed between the aberration generating element and the objective lens, and an electromagnetic field superposing multipole control unit for controlling the first electromagnetic field superposing multipole.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: July 11, 2017
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Momoyo Enyama, Akira Ikegami, Hideto Dohi, Hideyuki Kazumi, Naomasa Suzuki