Patents by Inventor Shoji Yoshikawa

Shoji Yoshikawa 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: 20080308729
    Abstract: A substrate inspection apparatus 1-1 (FIG.
    Type: Application
    Filed: June 30, 2008
    Publication date: December 18, 2008
    Applicant: EBARA CORPORATION
    Inventors: Toshifumi Kimba, Tohru Satake, Tsutomu Karimata, Kenji Watanabe, Nobuharu Noji, Takeshi Murakami, Masahiro Hatakeyama, Mamoru Nakasuji, Hirosi Sobukawa, Shoji Yoshikawa, Shin Oowada, Mutsumi Saito
  • Publication number: 20080302963
    Abstract: An electron beam apparatus such as a sheet beam based testing apparatus has an electron-optical system for irradiating an object under testing with a primary electron beam from an electron beam source, and projecting an image of a secondary electron beam emitted by the irradiation of the primary electron beam, and a detector for detecting the secondary electron beam image projected by the electron-optical system; specifically, the electron beam apparatus comprises beam generating means 2004 for irradiating an electron beam having a particular width, a primary electron-optical system 2001 for leading the beam to reach the surface of a substrate 2006 under testing, a secondary electron-optical system 2002 for trapping secondary electrons generated from the substrate 2006 and introducing them into an image processing system 2015, a stage 2003 for transportably holding the substrate 2006 with a continuous degree of freedom equal to at least one, a testing chamber for the substrate 2006, a substrate transport mech
    Type: Application
    Filed: July 22, 2008
    Publication date: December 11, 2008
    Applicant: EBARA CORPORATION
    Inventors: Mamoru NAKASUJI, Nobuharu NOJI, Tohru SATAKE, Toshifumi KIMBA, Hirosi SOBUKAWA, Tsutomu KARIMATA, Shin OOWADA, Shoji YOSHIKAWA, Mutsumi SAITO
  • Patent number: 7439502
    Abstract: The purpose of the invention is to provide an improved electron beam apparatus with improvements in throughput, accuracy, etc. One of the characterizing features of the electron beam apparatus of the present invention is that it has a plurality of optical systems, each of which comprises a primary electron optical system for scanning and irradiating a sample with a plurality of primary electron beams; a detector device for detecting a plurality of secondary beams emitted by irradiating the sample with the primary electron beams; and a secondary electron optical system for guiding the secondary electron beams from the sample to the detector device; all configured so that the plurality of optical systems scan different regions of the sample with their primary electron beams, and detect the respective secondary electron beams emitted from each of the respective regions. This is what makes higher throughput possible.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: October 21, 2008
    Assignee: Ebara Corporation
    Inventors: Mamoru Nakasuji, Tohru Satake, Nobuharu Noji, Hirosi Sobukawa, Tsutomu Karimata, Shoji Yoshikawa, Toshifumi Kimba, Shin Oowada, Mutsumi Saito, Muneki Hamashima, Yoshiaki Kohama, Yukiharu Okubo
  • Patent number: 7423267
    Abstract: The present invention provides an electron beam apparatus for irradiating a sample with primary electron beams to detect secondary electron beams generated from a surface of the sample by the irradiation for evaluating the sample surface. In the electron beam apparatus, an electron gun has a cathode for emitting primary electron beams. The cathode includes a plurality of emitters for emitting primary electron beams, arranged apart from one another on a circle centered at an optical axis of a primary electro-optical system. The plurality of emitters are arranged such that when the plurality of emitters are projected onto a straight line parallel with a direction in which the primary electron beams are scanned, resulting points on the straight line are spaced at equal intervals.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: September 9, 2008
    Assignee: Ebara Corporation
    Inventors: Mamoru Nakasuji, Nobuharu Noji, Tohru Satake, Masahiro Hatakeyama, Kenji Watanabe, Takao Kato, Hirosi Sobukawa, Tsutomu Karimata, Shoji Yoshikawa, Toshifumi Kimba, Shin Oowada, Mutsumi Saito, Muneki Hamashima
  • Patent number: 7423744
    Abstract: A defect marking device includes a flaw inspection device which has a plurality of light-receiving parts that identify reflected lights coming from an inspection plane of a metal strip under two or more of optical conditions different from each other; a signal processing section that judges the presence/absence of surface flaw on the inspection plane based on a combination of reflected light components identified under these optical conditions different from each other; and a marking device which applies marking that indicates information relating to the flaw on the surface of the metal strip.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: September 9, 2008
    Assignee: NKK Corporation
    Inventors: Mitsuaki Uesugi, Shoji Yoshikawa, Masaichi Inomata, Tsutomu Kawamura, Takahiko Oshige, Hiroyuki Sugiura, Akira Kazama, Tsuneo Suyama, Yasuo Kushida, Shuichi Harada, Hajime Tanaka, Osamu Uehara, Shuji Kaneto, Masahiro Iwabuchi, Kozo Harada, Shinichi Tomonaga, Shigemi Fukuda
  • Patent number: 7417236
    Abstract: An electron beam apparatus such as a sheet beam based testing apparatus has an electron-optical system for irradiating an object under testing with a primary electron beam from an electron beam source, and projecting an image of a secondary electron beam emitted by the irradiation of the primary electron beam, and a detector for detecting the secondary electron beam image projected by the electron-optical system; specifically, the electron beam apparatus comprises beam generating means 2004 for irradiating an electron beam having a particular width, a primary electron-optical system 2001 for leading the beam to reach the surface of a substrate 2006 under testing, a secondary electron-optical system 2002 for trapping secondary electrons generated from the substrate 2006 and introducing them into an image processing system 2015, a stage 2003 for transportably holding the substrate 2006 with a continuous degree of freedom equal to at least one, a testing chamber for the substrate 2006, a substrate transport mech
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: August 26, 2008
    Assignee: Ebara Corporation
    Inventors: Mamoru Nakasuji, Nobuharu Noji, Tohru Satake, Toshifumi Kimba, Hirosi Sobukawa, Tsutomu Karimata, Shin Oowada, Shoji Yoshikawa, Mutsumi Saito
  • Patent number: 7411191
    Abstract: An inspection apparatus by an electron beam comprises: an electron-optical device 70 having an electron-optical system for irradiating the object with a primary electron beam from an electron beam source, and a detector for detecting the secondary electron image projected by the electron-optical system; a stage system 50 for holding and moving the object relative to the electron-optical system; a mini-environment chamber 20 for supplying a clean gas to the object to prevent dust from contacting to the object; a working chamber 31 for accommodating the stage device, the working chamber being controllable so as to have a vacuum atmosphere; at least two loading chambers 41, 42 disposed between the mini-environment chamber and the working chamber, adapted to be independently controllable so as to have a vacuum atmosphere; and a loader 60 for transferring the object to the stage system through the loading chambers.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: August 12, 2008
    Assignees: Ebara Corporation, Kabushiki Kaisha Toshiba
    Inventors: Mamoru Nakasuji, Nobuharu Noji, Tohru Satake, Masahiro Hatakeyama, Toshifumi Kimba, Hiroshi Sobukawa, Shoji Yoshikawa, Takeshi Murakami, Kenji Watanabe, Tsutomu Karimata, Shin Oowada, Mutsumi Saito, Yuichiro Yamazaki, Takamitsu Nagai, Ichirota Nagahama
  • Patent number: 7408175
    Abstract: A substrate inspection apparatus 1-1 (FIG.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: August 5, 2008
    Assignee: Ebara Corporation
    Inventors: Toshifumi Kimba, Tohru Satake, Tsutomu Karimata, Kenji Watanabe, Nobuharu Noji, Takeshi Murakami, Masahiro Hatakeyama, Mamoru Nakasuji, Hirosi Sobukawa, Shoji Yoshikawa, Shin Oowada, Mutsumi Saito
  • Publication number: 20080173814
    Abstract: An electron beam inspection system of the image projection type includes a primary electron optical system for shaping an electron beam emitted from an electron gun into a rectangular configuration and applying the shaped electron beam to a sample surface to be inspected. A secondary electron optical system converges secondary electrons emitted from the sample. A detector converts the converged secondary electrons into an optical image through a fluorescent screen and focuses the image to a line sensor. A controller controls the charge transfer time of the line sensor at which the picked-up line image is transferred between each pair of adjacent pixel rows provided in the line sensor in association with the moving speed of a stage for moving the sample.
    Type: Application
    Filed: February 7, 2008
    Publication date: July 24, 2008
    Applicants: EBARA CORPORATION, KABUSHIKI KAISHA TOSHIBA
    Inventors: Kenji Watanabe, Hirosi Sobukawa, Nobuharu Noji, Tohru Satake, Shoji Yoshikawa, Tsutomu Karimata, Mamoru Nakasuji, Masahiro Hatakeyama, Takeshi Murakami, Yuichiro Yamazaki, Ichirota Nagahama, Takamitsu Nagai, Kazuyoshi Sugihara
  • Publication number: 20080173815
    Abstract: The purpose of the invention is to provide an improved electron beam apparatus with improvements in throughput, accuracy, etc. One of the characterizing features of the electron beam apparatus of the present invention is that it has a plurality of optical systems, each of which comprises a primary electron optical system for scanning and irradiating a sample with a plurality of primary electron beams; a detector device for detecting a plurality of secondary beams emitted by irradiating the sample with the primary electron beams; and a secondary electron optical system for guiding the secondary electron beams from the sample to the detector device; all configured so that the plurality of optical systems scan different regions of the sample with their primary electron beams, and detect the respective secondary electron beams emitted from each of the respective regions. This is what makes higher throughput possible.
    Type: Application
    Filed: February 8, 2008
    Publication date: July 24, 2008
    Applicant: Ebara Corporation
    Inventors: Mamoru Nakasuji, Tohru Satake, Nobuharu Noji, Hirosi Sobukawa, Tsutomu Karimata, Shoji Yoshikawa, Toshifumi Kimba, Shin Oowada, Mutsumi Saito, Muneki Hamashima, Yoshiaki Kohama, Yukiharu Okubo
  • Patent number: 7403279
    Abstract: In an examining apparatus, an electron gun irradiates an intended position of an information recording medium with an electron beam. A stage holds the information recording medium such that the information recording medium can be moved along a rotation direction and a radial direction. A detector detects electrons which have acquired information of a surface of the information recording medium by irradiating the information recording medium with the electron beam. An image producing unit acquires an image of the surface of the information recording medium based on the electrons detected by the detector. The examining apparatus can examine as to whether or not a defect of an information recording medium such as a CD and a DVD is present, but also can examine a shape of the defect thereof. The examining apparatus can also examine an information recording medium having a large storage capacity.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: July 22, 2008
    Assignee: Ebara Corporation
    Inventors: Keiichi Tohyama, Nobuharu Noji, Shoji Yoshikawa
  • Publication number: 20080121804
    Abstract: The present invention relates to a substrate inspection apparatus for inspecting a pattern formed on a substrate by irradiating a charged particle beam onto the substrate.
    Type: Application
    Filed: December 10, 2007
    Publication date: May 29, 2008
    Applicant: EBARA CORPORATION
    Inventors: Mamoru Nakasuji, Nobuharu Noji, Tohru Satake, Toshifumi Kimba, Masahiro Hatakeyama, Kenji Watanabe, Hirosi Sobukawa, Tsutomu Karimata, Shoji Yoshikawa, Shin Oowada, Mutsumi Saito, Muneki Hamashima
  • Patent number: 7365324
    Abstract: A system for further enhancing speed, i.e. improving throughput in a SEM-type inspection apparatus is provided. An inspection apparatus for inspecting a surface of a substrate produces a crossover from electrons emitted from an electron beam source 25•1, then forms an image under a desired magnification in the direction of a sample W to produce a crossover. When the crossover is passed, electrons as noises are removed from the crossover with an aperture, an adjustment is made so that the crossover becomes a parallel electron beam to irradiate the substrate in a desired sectional form. The electron beam is produced such that the unevenness of illuminance is 10% or less. Electrons emitted from the sample W are detected by a detector 25•11.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: April 29, 2008
    Assignee: Ebara Corporation
    Inventors: Nobuharu Noji, Tohru Satake, Hirosi Sobukawa, Toshifumi Kimba, Masahiro Hatakeyama, Shoji Yoshikawa, Takeshi Murakami, Kenji Watanabe, Tsutomu Karimata, Kenichi Suematsu, Yutaka Tabe, Ryo Tajima, Keiichi Tohyama
  • Patent number: 7351969
    Abstract: An electron beam inspection system of the image projection type includes a primary electron optical system for shaping an electron beam emitted from an electron gun into a rectangular configuration and applying the shaped electron beam to a sample surface to be inspected. A secondary electron optical system converges secondary electrons emitted from the sample. A detector converts the converged secondary electrons into an optical image through a fluorescent screen and focuses the image to a line sensor. A controller controls the charge transfer time of the line sensor at which the picked-up line image is transferred between each pair of adjacent pixel rows provided in the line sensor in association with the moving speed of a stage for moving the sample.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: April 1, 2008
    Assignees: Ebara Corporation, Kabushiki Kaisha Toshiba
    Inventors: Kenji Watanabe, Hirosi Sobukawa, Nobuharu Noji, Tohru Satake, Shoji Yoshikawa, Tsutomu Karimata, Mamoru Nakasuji, Masahiro Hatakeyama, Takeshi Murakami, Yuichiro Yamazaki, Ichirota Nagahama, Takamitsu Nagai, Kazuyoshi Sugihara
  • Publication number: 20080042060
    Abstract: An inspection apparatus and a semiconductor device manufacturing method using the same. The inspection apparatus is used for defect inspection, line width measurement, surface potential measurement or the like of a sample such as a wafer. In the inspection apparatus, a plurality of charged particles is delivered from a primary optical system to the sample, and secondary charged particles emitted from the sample are separated from the primary optical system and introduced through a secondary optical system to a detector. Irradiation of the charged particles is conducted while moving the sample. Irradiation spots of the charged particles are arranged by N rows along a moving direction of the sample and by M columns along a direction perpendicular thereto. Every row of the irradiation spots of the charged particles is shifted successively by a predetermined amount in a direction perpendicular to the moving direction of the sample.
    Type: Application
    Filed: October 9, 2007
    Publication date: February 21, 2008
    Applicant: EBARA CORPORATION
    Inventors: Mamoru Nakasuji, Nobuharu Noji, Tohru Satake, Toshifumi Kimba, Hirosi Sobukawa, Shoji Yoshikawa, Tsutomu Karimata, Shin Oowada, Mutsumi Saito, Muneki Hamashima, Toru Takagi
  • Patent number: 7305149
    Abstract: An image collating center has a communication unit, a processing unit, and a memory unit. The processing unit accesses a geographic information database through a communication network, extracts appropriate geographic information from the geographic information database based on a picked-up image and additional information transmitted from an image provider, and generates a simulated image assumed to be viewed from the image provider. Further, the image collating center estimates the image pickup position and the image pickup attitude of the image provider through collating the simulated image with the picked-up image and returns the estimated image pickup position and image pickup attitude of the image provider to the image provider through the communication network.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: December 4, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shoji Yoshikawa, Katsuhiko Yamada, Masafumi Yamaguchi, Akito Takeya
  • Publication number: 20070272859
    Abstract: The purpose of the invention is to provide an improved electron beam apparatus with improvements in throughput, accuracy, etc.. One of the characterizing features of the electron beam apparatus of the present invention is that it has a plurality of optical systems, each of which comprises a primary electron optical system for scanning and irradiating a sample with a plurality of primary electron beams; a detector device for detecting a plurality of secondary beams emitted by irradiating the sample with the primary electron beams; and a secondary electron optical system for guiding the secondary electron beams from the sample to the detector device; all configured so that the plurality of optical systems scan different regions of the sample with their primary electron beams, and detect the respective secondary electron beams emitted from each of the respective regions. This is what makes higher throughput possible.
    Type: Application
    Filed: June 11, 2007
    Publication date: November 29, 2007
    Applicant: Ebara Corporation
    Inventors: Mamoru Nakasuji, Tohru Satake, Nobuharu Noji, Hirosi Sobukawa, Tsutomu Karimata, Shoji Yoshikawa, Toshifumi Kimba, Shin Oowada, Mutsumi Saito, Muneki Hamashima, Yoshiaki Kohama, Yukiharu Okubo
  • Patent number: 7297949
    Abstract: An inspection apparatus and a semiconductor device manufacturing method using the same. The inspection apparatus is used for defect inspection, line width measurement, surface potential measurement or the like of a sample such as a wafer. In the inspection apparatus, a plurality of charged particles is delivered from a primary optical system to the sample, and secondary charged particles emitted from the sample are separated from the primary optical system and introduced through a secondary optical system to a detector. Irradiation of the charged particles is conducted while moving the sample. Irradiation spots of the charged particles are arranged by N rows along a moving direction of the sample and by M columns along a direction perpendicular thereto. Every row of the irradiation spots of the charged particles is shifted successively by a predetermined amount in a direction perpendicular to the moving direction of the sample.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: November 20, 2007
    Assignee: Ebara Corporation
    Inventors: Mamoru Nakasuji, Nobuharu Noji, Tohru Satake, Toshifumi Kimba, Hirosi Sobukawa, Shoji Yoshikawa, Tsutomu Karimata, Shin Oowada, Mutsumi Saito, Muneki Hamashima, Toru Takagi
  • Publication number: 20070235644
    Abstract: An inspection apparatus by an electron beam comprises: an electron-optical device 70 having an electron-optical system for irradiating the object with a primary electron beam from an electron beam source, and a detector for detecting the secondary electron image projected by the electron-optical system; a stage system 50 for holding and moving the object relative to the electron-optical system; a mini-environment chamber 20 for supplying a clean gas to the object to prevent dust from contacting to the object; a working chamber 31 for accommodating the stage device, the working chamber being controllable so as to have a vacuum atmosphere; at least two loading chambers 41, 42 disposed between the mini-environment chamber and the working chamber, adapted to be independently controllable so as to have a vacuum atmosphere; and a loader 60 for transferring the object to the stage system through the loading chambers.
    Type: Application
    Filed: June 1, 2007
    Publication date: October 11, 2007
    Applicants: EBARA CORPORATION, KABUSHIKI KAISHA TOSHIBA
    Inventors: Mamoru Nakasuji, Nobuharu Noji, Tohru Satake, Masahiro Hatakeyama, Toshifumi Kimba, Hiroshi Sobukawa, Shoji Yoshikawa, Takeshi Murakami, Kenji Watanabe, Tsutomu Karimata, Shin Oowada, Mutsumi Saito, Yuichiro Yamazaki, Takamitsu Nagai, Ichirota Nagahama
  • Publication number: 20070194235
    Abstract: A substrate inspection apparatus 1-1 (FIG.
    Type: Application
    Filed: April 12, 2007
    Publication date: August 23, 2007
    Applicant: EBARA CORPORATION
    Inventors: Toshifumi Kimba, Tohru Satake, Tsutomu Karimata, Kenji Watanabe, Nobuharu Noji, Takeshi Murakami, Masahiro Hatakeyama, Mamoru Nakasuji, Hirosi Sobukawa, Shoji Yoshikawa, Shin Oowada, Mutsumi Saito