Patent ID: 8778604
Filing Date: 2014-07-15
Classification: G03F

Abstract:
1. A method of forming a mask pattern on a substrate, comprising the steps of: providing a mask pattern having a base and a plurality of spaced-apart teeth; splitting said mask pattern into a first sub-mask pattern and a second sub-mask pattern, wherein said first sub-mask pattern is provided with a first base and a plurality of first teeth and protruding portions extending from said first base and alternatively aligning along a first direction, said second sub-mask pattern is provided with a second base and a plurality of second teeth extending from said second base, said second base may at least partially overlap said first base so that each of said protruding portions at least partially overlap one of said second teeth; forming two masks respectively having said first sub-mask pattern and said second sub-mask pattern; forming a photo-sensitive layer on said substrate; and using said two masks to respectively expose said photo-sensitive layer.