Patents by Inventor Yuichi Madokoro

Yuichi Madokoro 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: 20060097186
    Abstract: An emitter of a Ga liquid metal ion source is constituted to include W12 of a base material and Ga9 of an ion source element covering a surface as construction materials. By making back-sputtered particles become elements (W and Ga) of the Ga liquid metal ion sour source, if back-sputtered particles attach to the Ga liquid metal ion source, contamination which may change physical characteristics of Ga9 does not occur. A W aperture is used as a beam limiting (GUN) aperture to place Ga of approx. 25 mg (of melting point of 30° C.) on a surface of a portion included in a beam emission region (Ga store). When emitting ions to the beam limiting (GUN) aperture, Ga in the emission region melts and diffuses on a surface of the beam emission region of the W aperture.
    Type: Application
    Filed: December 21, 2005
    Publication date: May 11, 2006
    Applicant: Hitachi High-Technologies
    Inventors: Hiroyasu Kaga, Yuichi Madokoro, Shigeru Izawa, Tohru Ishitani, Kaoru Umemura
  • Publication number: 20060054840
    Abstract: In an aperture for use in an ion beam optical system having its surface coated with a liquid metal, instability of an ion source attributable to sputtering and re-deposition of an aperture base material is prevented. A focused ion beam apparatus using a liquid metal ion source has an aperture for limiting an ion beam diameter. The aperture has a vessel formed with a recess having, at its surface lowermost point, an aperture hole through which the ion beam passes and a liquid metal mounted on the recess, the liquid metal being used for the liquid metal ion source. Preferably, the aperture may be minimized in area of aperture entrance hole inner surface which exposes the base material by tapering an aperture hole portion, by which the ion beam passes, on the downstream side.
    Type: Application
    Filed: August 17, 2005
    Publication date: March 16, 2006
    Inventors: Yuichi Madokoro, Shigeru Izawa, Kaoru Umemura, Hiroyasu Kaga
  • Patent number: 7005651
    Abstract: An emitter of a Ga liquid metal ion source is constituted to include W12 of a base material and Ga9 of an ion source element covering a surface as construction materials. By making back-sputtered particles become elements (W and Ga) of the Ga liquid metal ion source, if back-sputtered particles attach to the Ga liquid metal ion source, contamination which may change physical characteristics of Ga9 does not occur. A W aperture is used as a beam limiting (GUN) aperture to place Ga of approx. 25 mg (of melting point of 30° C.) on a surface of a portion included in a beam emission region (Ga store). When emitting ions to the beam limiting (GUN) aperture, Ga in the emission region melts and diffuses on a surface of the beam emission region of the W aperture.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: February 28, 2006
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Hiroyasu Kaga, Yuichi Madokoro, Shigeru Izawa, Tohru Ishitani, Kaoru Umemura
  • Publication number: 20050279952
    Abstract: In order to implement faster high precision milling and high resolution image observation in the structure analysis and failure analysis of the MEMS and semiconductor devices, a two-lens optical system is mounted on a focused ion beam apparatus, and in the optical system the distance from an emitter apex in an ion source to an earth electrode included in a condenser lens and disposed nearest to the ion source is in the range of 5 to 14 mm.
    Type: Application
    Filed: June 14, 2005
    Publication date: December 22, 2005
    Inventors: Tohru Ishitani, Hiroyuki Muto, Yuichi Madokoro
  • Publication number: 20050127304
    Abstract: An emitter of a Ga liquid metal ion source is constituted to include W12 of a base material and Ga9 of an ion source element covering a surface as construction materials. By making back-sputtered particles become elements (W and Ga) of the Ga liquid metal ion sour source, if back-sputtered particles attach to the Ga liquid metal ion source, contamination which may change physical characteristics of Ga9 does not occur. A W aperture is used as a beam limiting (GUN) aperture to place Ga of approx. 25 mg (of melting point of 30° C.) on a surface of a portion included in a beam emission region (Ga store). When emitting ions to the beam limiting (GUN) aperture, Ga in the emission region melts and diffuses on a surface of the beam emission region of the W aperture.
    Type: Application
    Filed: December 7, 2004
    Publication date: June 16, 2005
    Inventors: Hiroyasu Kaga, Yuichi Madokoro, Shigeru Izawa, Tohru Ishitani, Kaoru Umemura
  • Publication number: 20050092922
    Abstract: For the sake of realizing high throughput and high processing position accuracy in an ion beam apparatus, two kinds of ion beams for processing are prepared of which one is a focusing ion beam for high image resolution and an edge processing ion beam of large beam current for permitting a sectional edge portion to be processed sharply, whereby high processing position accuracy can be ensured even with a large current ion beam.
    Type: Application
    Filed: October 27, 2004
    Publication date: May 5, 2005
    Inventors: Hiroyuki Muto, Tohru Ishitani, Yuichi Madokoro
  • Publication number: 20050054029
    Abstract: A specimen fabrication apparatus including a movable sample stage on which a specimen substrate is mounted, a probe connector for firmly joining a tip of a probe to a portion of the specimen substrate in a vicinity of an area on the specimen substrate to be observed in an observation apparatus, a micro-specimen separator for separating from the specimen substrate a micro-specimen to which the tip of the probe is firmly joined, the micro-specimen including the area on the specimen substrate to be observed and the portion of the specimen substrate to which the tip of the probe is firmly joined, a micro-specimen fixer for fixing the micro-specimen separated from the specimen substrate to a specimen holder of the observation apparatus, and a probe separator for separating the tip of the probe from the micro-specimen fixed to the specimen holder.
    Type: Application
    Filed: September 16, 2004
    Publication date: March 10, 2005
    Inventors: Satoshi Tomimatsu, Kaoru Umemura, Yuichi Madokoro, Yoshimi Kawanami, Yasunori Doi
  • Patent number: 6828566
    Abstract: A specimen fabrication apparatus including a movable sample stage on which a specimen substrate is mounted, a probe connector for firmly joining a tip of a probe to a portion of the specimen substrate in a vicinity of an area on the specimen substrate to be observed in an observation apparatus, a micro-specimen separator for separating from the specimen substrate a micro-specimen to which the tip of the probe is firmly joined, the micro-specimen including the area on the specimen substrate to be observed and the portion of the specimen substrate to which the tip of the probe is firmly joined, a micro-specimen fixer for fixing the micro-specimen separated from the specimen substrate to a specimen holder of the observation apparatus, and a probe separator for separating the tip of the probe from the micro-specimen fixed to the specimen holder.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: December 7, 2004
    Inventors: Satoshi Tomimatsu, Kaoru Umemura, Yuichi Madokoro, Yoshimi Kawanami, Yasunori Doi
  • Patent number: 6822245
    Abstract: For the sake of realizing high throughput and high processing position accuracy in an ion beam apparatus, two kinds of ion beams for processing are prepared of which one is a focusing ion beam for high image resolution and an edge processing ion beam of large beam current for permitting a sectional edge portion to be processed sharply, whereby high processing position accuracy can be ensured even with a large current ion beam.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: November 23, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Hiroyuki Muto, Tohru Ishitani, Yuichi Madokoro
  • Publication number: 20030183776
    Abstract: A specimen fabrication apparatus including a movable sample stage on which a specimen substrate is mounted, a probe connector for firmly joining a tip of a probe to a portion of the specimen substrate in a vicinity of an area on the specimen substrate to be observed in an observation apparatus, a micro-specimen separator for separating from the specimen substrate a micro-specimen to which the tip of the probe is firmly joined, the micro-specimen including the area on the specimen substrate to be observed and the portion of the specimen substrate to which the tip of the probe is firmly joined, a micro-specimen fixer for fixing the micro-specimen separated from the specimen substrate to a specimen holder of the observation apparatus, and a probe separator for separating the tip of the probe from the micro-specimen fixed to the specimen holder.
    Type: Application
    Filed: March 25, 2003
    Publication date: October 2, 2003
    Inventors: Satoshi Tomimatsu, Kaoru Umemura, Yuichi Madokoro, Yoshimi Kawanami, Yasunori Doi
  • Patent number: 6538254
    Abstract: A method and an apparatus for fabrication of a specimen including a semiconductor wafer or a semiconductor device chip and the tip of a probe firmly joined to the vicinity of an area to be observed on the specimen substrate which is mounted on a sample stage. A micro-specimen including the area to be observed is separated from the specimen substrate. Firmly joined to the tip of the probe, the micro-specimen separated from the specimen substrate is then transferred to a specimen holder of an apparatus for carrying out an observation, an analysis and/or a measurement on the micro-specimen to be fixed to the specimen holder. Subsequently, the tip of the probe is separated from the micro-specimen fixed to the specimen holder.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: March 25, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Satoshi Tomimatsu, Kaoru Umemura, Yuichi Madokoro, Yoshimi Kawanami, Yasunori Doi
  • Publication number: 20020008208
    Abstract: For the sake of realizing high throughput and high processing position accuracy in an ion beam apparatus, two kinds of ion beams for processing are prepared of which one is a focusing ion beam for high image resolution and an edge processing ion beam of large beam current for permitting a sectional edge portion to be processed sharply, whereby high processing position accuracy can be ensured even with a large current ion beam.
    Type: Application
    Filed: February 27, 2001
    Publication date: January 24, 2002
    Applicant: Hitachi, Ltd.
    Inventors: Hiroyuki Muto, Tohru Ishitani, Yuichi Madokoro
  • Patent number: 5910871
    Abstract: The track width of a magnetic head is specified by the interval between a pair of grooves in the slider surface that are formed by a projection ion beam. Specifically, the grooves are processed by projecting a mask having the pattern of the pair of grooves with a projection ion beam with reduction to a magnification of 1/10, for example. Although the peripheral strain of the pattern thus formed is large and the current distortion is not uniform when the projection ion beam batch irradiation area is limited, the increase in depth of the grooves formed at the periphery of the grooves does not affect the track narrowing process at the center portion of the projection ion beam since the strain thereof is negligibly small. As a result, a narrow track width is processed with high precision.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: June 8, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Yoshimi Kawanami, Hisashi Takano, Kaoru Umemura, Yuichi Madokoro, Satoshi Tomimatsu