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:
Jul. 06, 2010
Filed:
Apr. 19, 2005
Daisuke Kawamura, Yokohama, JP;
Shinichi Ito, Yokohama, JP;
Daisuke Kawamura, Yokohama, JP;
Shinichi Ito, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A method of generating a writing pattern is disclosed, which generates, from pattern data, writing pattern data to write a mask pattern in a photomask used in an exposure tool comprising a projection optical system to transfer the mask pattern to a resist film formed on a substrate, an immersion mechanism which forms a liquid film in a local region, and a movement mechanism which moves the substrate with respect to the projection optical system and the immersion mechanism, the method comprising obtaining a typical distribution of contact history values between the resist film and the liquid film in the unit exposure region, dividing a pattern which corresponds to the pattern data into a plurality of regions according to the typical distribution of the contact history values, and carrying out correction of a pattern included in each of the divided regions under a rule according to the contact history values.