Patent ID: 8090188

Claim:
A reticle pattern defect correcting apparatus, comprising: a lithographic emulation system for generating a transferred image for a reticle pattern, the lithographic emulation system including an optical emulation system and an image processing unit; and a defect correcting system for correcting a defect in the reticle pattern based on the transferred image, the defect correcting system including a defect correcting unit and a control unit for controlling the defect correcting unit, wherein the image processing unit, based on observed information of a corrected area on a wafer transferred image through the optical emulation system, calculates a difference between a current correction level and predetermined permissible specifications for the wafer transferred image and transmits information on the difference to the control unit, and wherein the defect correcting system repeats the correcting of the reticle pattern defect and the image processing unit repeats the calculating of the difference until the calculated difference is within a permissible range.