The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 2010
Filed:
Jun. 07, 2006
Applicants:
Toshiki Ito, Kawasaki, JP;
Natsuhiko Mizutani, Tokyo, JP;
Takako Yamaguchi, Yokohama, JP;
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a near-field exposure mask having a light blocking layer formed on a substrate, the light blocking layer having an opening with an opening width narrower than a wavelength of an exposure light source, wherein exposure of an object to be exposed is carried out by use of near-field light to be produced at the opening while the exposure mask and the object to be exposed are placed in contact with each other, an important feature residing in that the light blocking layer is provided by a film that contains silicon in a range from 50% to 100% in terms of mole fraction.