Patent ID: 8682058

Claim:
A defect analysis method comprising: setting a plurality of positional relationships between a coordinate system for indicating a defect position that is used by an inspection device that detects a defect generated on a wafer on which a pattern is formed and outputs a generation position of detected defect and a coordinate system that is used in design data on the pattern; aligning the defect position output by the inspection device and the design data by using each of set positional relationships; extracting a local pattern of a portion in which the defect position is aligned from the design data for each of the positional relationships; classifying extracted local pattern based on a degree of matching of graphical feature; calculating number of classification patterns for each of the positional relationships; and calculating a pattern dependence degree of detected defect group by using calculated number of classification patterns of each of the positional relationships, wherein the pattern dependence degree is one of: a sample variance of the number of classification patterns of each of the positional relationships, or a value obtained by dividing a difference between a maximum value and a minimum value of the number of classification patterns by the minimum value.