Patents by Inventor Isamu Sekihara

Isamu Sekihara 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: 6734687
    Abstract: Disconnection defects, short-circuit defects and the like in wiring patters of submicron sizes within TEGs (a square of 1 to 2.5 mm for each) numerously arranged in a large chip (a square of 20 to 25 mm) can be inspected with respect to all the TEGs, with good operability, high reliability and high efficiency. A conductor probe for applying voltage to the wiring patterns by mechanical contact is composed of synchronous type conductor probe that synchronizes with movement of a sample stage (16), and fixed type conductor probe means (21) that is relatively fixed to an FIB generator (10). Positions of probe tips are superimposed to an SIM image and displayed on a display unit (19).
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: May 11, 2004
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems, Co., Ltd.
    Inventors: Tohru Ishitani, Hidemi Koike, Aritoshi Sugimoto, Isamu Sekihara, Kaoru Umemura, Satoshi Tomimatsu, Junzo Azuma
  • Publication number: 20030198755
    Abstract: The present invention provides a technique of filling a hole from which a sample is extracted with an FIB at high speed. A method of filling a hole by using an ion beam includes a step of irradiating a hole formed in a sample face with an ion beam to thereby form an ion beam gas-assisted deposition layer in the hole. The ion beam gas-assisted deposition layer is formed in the hole while controlling the ion beam so as to fall on a part of a side wall of the hole and so as not to fall on another part of the side wall in an area scanned with the ion beam.
    Type: Application
    Filed: December 19, 2002
    Publication date: October 23, 2003
    Inventors: Hiroyasu Shichi, Muneyuki Fukuda, Isamu Sekihara, Satoshi Tomimatsu, Kaoru Umemura
  • Publication number: 20030184332
    Abstract: A probe driving method and a probe apparatus for bringing a probe into contact with the surface of a sample in a safe and efficient manner by monitoring the probe height. Information about the height of the probe from the sample surface is obtained by detecting a probe shadow (54) appearing immediately before the probe contacts the sample, or based on a change in relative positions of a probe image and a sample image that are formed as an ion beam is irradiated diagonally.
    Type: Application
    Filed: November 29, 2002
    Publication date: October 2, 2003
    Inventors: Satoshi Tomimatsu, Hidemi Koike, Junzo Azuma, Tohru Ishitani, Aritoshi Sugimoto, Yuichi Hamamura, Isamu Sekihara, Akira Shimase