Patent ID: 7517618
Filing Date: 2009-04-14
Classification: B82Y,G03F,H01J

Abstract:
1. A mask comprising a supporting frame, a beam portion for sectionalizing a region surrounded by said supporting frame, a thin film formed on the region sectionalized by said beam portion, and apertures of a pattern formed on said thin film and obtained by complementarily dividing a circuit pattern to be transferred on an object to be exposed; wherein said beam portion comprises a first beam portion wherein a plurality of beams extending by inclining with respect to two coordinate axes composing a coordinate system for specifying a position of said pattern are arranged at regular intervals, and a second beam portion wherein a plurality of beams extending by inclining with respect to said two coordinate axes and intersecting with said first beam portion are arranged at regular intervals; wherein four unit exposure regions for performing exposure by being superimposed on said object to be exposed are set in the region surrounded by said supporting frame, and said thin film of at least two of said unit exposure regions exists at any position when superimposing said four unit exposure regions.