Patent ID: 7974457

Claim:
A method of using a computer device for testing a mask pattern, the method comprising the steps of: (a) applying optical proximity-effect compensation to a first pattern to be tested and to be formed onto a mask layer, to thereby actually form a mask pattern of said mask layer; (b) dividing said first pattern into a plurality of areas in accordance with a second pattern to be formed onto another mask layer; (c) determining sampling points on an edge of said first pattern; (d) determining a test standard for each of said areas; (e) simulating with a computer device a resist pattern formed on a resist by exposing said resist to a light through said mask pattern; and (f) checking whether a dimensional gap between said first pattern and said resist pattern at each of said sampling points is within a test standard associated with an area to which each of said sampling points belongs, wherein a test standard for a first area among said areas and a test standard for a second area among said areas are different from each other, wherein the quantity of sampling points on the edge of said first pattern in the first area is different than the quantity of sampling points on the edge of said first pattern in the second area; and wherein said compensated mask pattern of said mask layer is generated by changing a condition of the proximity-effect compensation when a difference between said mask design pattern to be tested and said resist pattern is out of the test standard, wherein a process is ended when the difference between said mask design pattern to be tested and said resist pattern is within the test standard.