Patent ID: 6074787
Filing Date: 2000-06-13
Classification: G03F

Abstract:
A method of making a mask pattern including an original pattern to be printed on a wafer substrate and an auxiliary pattern for improving printing accuracy of the original pattern, including the steps of:forming the original pattern to be printed on the wafer substrate, said original pattern having a minimum width (w);providing a first specific width (f) that has a span close to said minimum width (w) on the entire periphery of the original pattern and enlarging the original pattern so as to form an enlarged original pattern region and establishing the enlarged original pattern region as an auxiliary pattern forbidden region wherein formation of the auxiliary pattern is forbidden;providing a second specific width (b) on the entire periphery of the auxiliary pattern forbidden region and thereby enlarging the auxiliary pattern forbidden region so as to form an enlarged forbidden region and establishing the enlarged forbidden region from which the auxiliary pattern forbidden region is excluded as an auxiliary pattern formation region for forming the auxiliary pattern; andreducing the auxiliary pattern formation region to a third specific width (a) within which the auxiliary pattern is formed,wherein an interval (d) between the auxiliary pattern and the original pattern is represented by: d={f+(b-a)/2}.