Patent ID: 8313876
Filing Date: 2012-11-20
Classification: G03F

Abstract:
1. An exposure mask for fabricating a semiconductor device, the mask comprising: a substrate including an first opaque pattern, a second opaque pattern neighboring the first opaque pattern, a third opaque pattern neighboring the second opaque pattern, a first transparent pattern between the first opaque pattern and the second opaque pattern, and a second transparent pattern between the second opaque pattern and the third the opaque pattern; a first island type shifter formed over the first transparent pattern, the first opaque pattern, and the second opaque pattern, wherein the width of the first island type shifter is larger than that of the first transparent pattern; and a second island type shifter formed over the second transparent pattern, the second opaque pattern, and the third opaque pattern, wherein the width of the second island type shifter is larger than that of the second transparent pattern.