Patent ID: 8275189
Filing Date: 2012-09-25
Classification: G01N,G03F,H01L

Abstract:
1. A defect inspection system comprising: first accumulating means for accumulating an inspection image including a defect and a reference image corresponding thereto in association with an inspection condition; second accumulating means for digitalizing, as a defect signal intensity, a mismatched portion of the inspection image and the reference image to accumulate the defect signal intensity in association with the inspection condition; control means for changing the inspection condition to execute accumulations repeatedly for evaluations until evaluations of all inspection conditions in a set range are completed; and displaying means for using information about the inspection image including a defect and the reference image, which is accumulated in the first accumulating means in association with the inspection condition, and information about the mismatched portion of the inspection image and the reference image, which is digitalized as a defect signal intensity and accumulated in the second accumulating means in association with the inspection condition, to display an inspection condition distribution of the defect signal intensity accumulated, wherein the inspection image including the defect and the reference image, which are accumulated in the first accumulating means, are images obtained by producing a simulation model based on a structural drawing of a substrate to be inspected and calculating a case where the defect is present and a case where the defect is not present according to the simulation model.