Patent ID: 9053527
Filing Date: 2015-06-09
Classification: G01N,G03F,G06T

Abstract:
1. A computer-implemented method for detecting defects on a wafer, comprising: acquiring first raw output for a wafer generated using a first optics mode of an inspection system and second raw output generated for the wafer using a second optics mode of the inspection system; identifying one or more characteristics of the first raw output that correspond to one or more geometrical characteristics of patterned features formed on the wafer; assigning individual output in the second raw output to different segments based on the identified one or more characteristics of the first raw output and based on the individual output in the second raw output and individual output in the first raw output that were generated at substantially the same locations on the wafer such that the one or more geometrical characteristics of the patterned features that correspond to each of the different segments in the second raw output are different, wherein the one or more geometrical characteristics that correspond to one of the different segments comprise one or more geometrical characteristics of page breaks, and wherein the one or more geometrical characteristics that correspond to another of the different segments comprise one or more geometrical characteristics of array areas; separately assigning one or more defect detection parameters to the different segments; and applying the assigned one or more defect detection parameters to the individual output in the second raw output assigned to the different segments to thereby detect defects on the wafer.