Patents by Inventor Masaki Hosoda

Masaki Hosoda 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: 20060197453
    Abstract: An electron beam writing technology which enables highly accurate deflection correction of a minute field used in an electron beam writing system is provided. In this system, a function to move an electron beam by a deflection means through high-speed deflection scanning so as to repeat formation of a cyclic patterned electron beam and a function to move the patterned electron beam on cyclic correction marks by the deflection means through low-speed deflection scanning in synchronization with one cycle of the repetition are provided, and reflected electrons or secondary electrons emitted from the correction marks and the vicinity thereof or transmitted electrons transmitted through the correction marks in the low-speed deflection scanning are detected so as to correct the position or deflection amount of the electron beam based on the detection result.
    Type: Application
    Filed: February 17, 2006
    Publication date: September 7, 2006
    Inventors: Yoshinori Nakayama, Hiroya Ohta, Makoto Sakakibara, Yasunari Sohda, Masaki Hosoda
  • Publication number: 20060017019
    Abstract: In a charged particle exposure apparatus which exposes a substrate using a blanking unit to repeat blocking and exposure of charged particle beam to the substrate, a blanking direction is adjusted. As an example of the blanking direction, a direction vertical to a raster scanning direction is used.
    Type: Application
    Filed: June 23, 2005
    Publication date: January 26, 2006
    Applicants: CANON KABUSHIKI KAISHA, Hitachi High-Technologies Corporation
    Inventors: Masaki Hosoda, Masato Muraki, Osamu Kamimura
  • Publication number: 20060006342
    Abstract: An assembly having first and second members arranged through a sealing member sandwiched between them is disclosed. The second member has a reference portion having a reference surface. The assembly includes a pressing portion which presses the first member against the reference surface in a direction substantially parallel to a surface of the second member. The second member is fixed to the first member while the first member abuts against the reference surface and the sealing member is compressed between the first and second members.
    Type: Application
    Filed: June 20, 2005
    Publication date: January 12, 2006
    Applicants: Canon Kabushiki Kaisha, Hitachi High-Technologies Corporation
    Inventors: Masaki Hosoda, Masato Muraki, Yasuhiro Someda, Mahito Negishi, Koichi Wakizaka, Masakazu Sugaya
  • Publication number: 20050072941
    Abstract: Disclosed is equipment for charged-particle beam lithography capable of executing exposure even when an electron beam with a bad property is produced due to a failure in some multibeam forming element, without replacing the failing multibeam forming element and without reducing the exposure accuracy. The equipment includes means for forming a plurality of charged-particle beams arranged at predetermined intervals; a plurality of blankers which act on the plurality of charged-particle beams individually; a common blanker which acts on all of the plurality of charged-particle beams; and a blanking restriction for causing those charged-particle beams which are given predetermined deflection by the plurality of blankers to reach onto a sample, with a signal applied to the common blanker, and blocking those charged-particle beams which are not given the predetermined deflection by the plurality of blankers to the sample.
    Type: Application
    Filed: October 5, 2004
    Publication date: April 7, 2005
    Inventors: Sayaka Tanimoto, Yasunari Sohda, Yoshinori Nakayama, Osamu Kamimura, Haruo Yoda, Masaki Hosoda
  • Patent number: 6870171
    Abstract: An electron beam exposure apparatus which exposes a wafer (118) by using a plurality of electron beams corrects the positional error of the electron beams by using multi-deflector arrays (105, 106) capable of independently deflecting the positions of the electron beams, and pattern data to be projected onto the wafer (118). More specifically, when each of the electron beams is deflected to a predetermined exposure position on the basis of the pattern data, a static positional error independent of the deflection position is corrected by the multi-deflector arrays (105, 106), and a dynamic positional error depending on the deflection position is corrected on the basis of the pattern data.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: March 22, 2005
    Assignees: Canon Kabushiki Kaisha, Hitachi High-Technologies Corporation
    Inventors: Masaki Hosoda, Masato Muraki, Hiroya Ohta, Haruo Yoda
  • Publication number: 20040188636
    Abstract: An electron beam exposure apparatus which exposes a wafer (118) by using a plurality of electron beams corrects the positional error of the electron beams by using multi-deflector arrays (105, 106) capable of independently deflecting the positions of the electron beams, and pattern data to be projected onto the wafer (118). More specifically, when each of the electron beams is deflected to a predetermined exposure position on the basis of the pattern data, a static positional error independent of the deflection position is corrected by the multi-deflector arrays (105, 106), and a dynamic positional error depending on the deflection position is corrected on the basis of the pattern data.
    Type: Application
    Filed: March 23, 2004
    Publication date: September 30, 2004
    Applicants: CANON KABUSHIKI KAISHA, HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Masaki Hosoda, Masato Muraki, Hiroya Ohta, Haruo Yoda