Patent ID: 7808629
Filing Date: 2010-10-05
Classification: G01M,G01N,G03F

Abstract:
1. A method of inspecting a photomask, the method comprising: inspecting at least a portion of the photomask to provide a location of defects with a first resolution in a first system; determining at least one defect region in the location of the defects, the defect region having a defect therein in the first system; reviewing the at least one defect region to provide a defect image having a second resolution that is finer than the first resolution in a second system that is different from the first system; repairing the defect in patterns of the photomask in a third system that is different from the first and second systems, wherein the repair is based on the defect image from the second system; imaging the at least one defect region in the second system to provide a repaired defect image after repairing the defect; and evaluating whether the defect is sufficiently repaired using the repaired defect image from the second system.