Patent ID: 8108172

Claim:
A defect review apparatus for observing a defect on a sample based on defect coordinate information provided by an external inspection apparatus, said defect review apparatus comprising: a stage for moving the sample; an electro-optical system for irradiating the sample with an electron beam, and detecting secondary particles; an A/D converter for obtaining an image of said sample based on said secondary particles; an image processor for specifying a coordinate position of the defect using said image; a processing unit which calculates a difference between the coordinate position of the defect and said coordinate information, and executes an iterative correcting process which corrects a deviation amount, being a difference between a coordinate system of said inspection apparatus and a coordinate system of said defect review apparatus; wherein the processing unit compares the calculated difference to a predetermined criterion, and causes the correcting process to be continued if the deviation amount has not converged, and causes the correcting process to be terminated if the deviation amount has converged.