Patent ID: 7728969

Claim:
A computer-implemented method for identifying defect types on a wafer, comprising: acquiring output of an inspection system for defects detected on a wafer, wherein the output is acquired by different combinations of illumination and collection channels of the inspection system; and identifying defect types of the defects based on the output acquired by a set of the different combinations by separately determining different reported sizes for the defects from the output acquired by the different combinations included in the set and identifying the defect types of the defects based on a function of the different reported sizes for the defects, wherein the set of the different combinations is selected based on the defect types to be identified on the wafer and a wafer type of the wafer such that a different set of the different combinations of the illumination and collection channels is used for identifying different defect types on different wafer types, and wherein the defect types of the defects comprise defect types other than particles and crystal-originated pits.