Patent ID: 8233695
Filing Date: 2012-07-31
Classification: G06T

Abstract:
1. A method of generating an inspection data used for inspecting an inspection-object pattern formed on a substrate, by a double exposure process in which the inspection-object pattern is formed by transferring a first mask pattern formed on a first mask and a second mask pattern formed on a second mask onto one layer on the substrate, a part of a first transferred pattern of the first mask pattern and a part of a second transferred pattern of the second mask pattern being overlapped on the layer, the method comprising: performing, by a computer, a corner process on each corner of a first design data of the first mask pattern of a first exposure of the double exposure process to generate first corner-processed design data, and performing a corner process on each corner of a second design data of the second mask pattern of a second exposure of the double exposure process to generate second corner-processed design data; generating, by a computer, the inspection data by performing a logical operation using the first corner-processed design data and the second corner-processed design data; wherein the performing the logical operation is subtracting the second corner-processed design data corresponding to a light transmitting region of the second mask pattern from the first corner-processed design data corresponding to a light shielding region of the first mask pattern.