Mask and its manufacturing method, exposure, and device fabrication method
First Claim
1. A mask comprising plural contact hole patterns, and plural auxiliary patterns, each auxiliary pattern being smaller than each contact hole pattern,wherein the plural auxiliary patterns include a first auxiliary pattern and plural second auxiliary patterns, centers of the contact hole patterns and a center of the first auxiliary pattern being at regular periods in a line, the plural second auxiliary patterns each having a center that is offset from the line and equally distant from two adjacent centers among the contact hole patterns and the first auxiliary pattern, andwherein the plural second auxiliary patterns are arranged at both sides of the line.
1 Assignment
0 Petitions
Accused Products
Abstract
A mask arranges a predetermined pattern and an auxiliary pattern smaller than the predetermined pattern so that where a virtual lattice is assumed which has a lattice point located at a center of the predetermined pattern, a center of the auxiliary pattern is offset from the lattice point of the virtual lattice.
24 Citations
10 Claims
-
1. A mask comprising plural contact hole patterns, and plural auxiliary patterns, each auxiliary pattern being smaller than each contact hole pattern,
wherein the plural auxiliary patterns include a first auxiliary pattern and plural second auxiliary patterns, centers of the contact hole patterns and a center of the first auxiliary pattern being at regular periods in a line, the plural second auxiliary patterns each having a center that is offset from the line and equally distant from two adjacent centers among the contact hole patterns and the first auxiliary pattern, and wherein the plural second auxiliary patterns are arranged at both sides of the line.
-
8. A mask designing method for designing a mask that includes plural contact hole patterns, and plural auxiliary patterns having a first auxiliary pattern and plural second auxiliary patterns, each auxiliary pattern being smaller than each contact hole pattern, the mask enabling plural contact hole patterns to resolve and while preventing the plural auxiliary patterns from resolving, said mask designing method comprising the steps of:
-
arranging a first auxiliary pattern so that centers of the contact hole patterns and a center of the first auxiliary pattern being at regular periods in a line; and arranging plural second auxiliary patterns each having a center that is offset from the line, and equally distant from two adjacent centers among the first auxiliary pattern and the contact hole patterns, and the plural second auxiliary patterns are located at both sides of the line. - View Dependent Claims (9, 10)
-
Specification