Patent ID: 7916930

Claim:
A method for the repair of photolithography masks, wherein a photolithography mask is examined for the presence of defects and a list of defects is generated in which at least one type of defect, its extent, and its location on the photolithography mask is assigned to each defect, and these defects are repaired, said method comprising: selecting one of several predetermined repair methods depending on a mask type, a defect type, and an extent of the defect, and repairing a photolithography mask according to the selected repair method; analyzing the repaired defect as to whether any deviations it generates, during imaging, from one or more predetermined specifications are outside predetermined tolerances; and if the deviations are outside the predetermined tolerances, carrying out said steps of selecting and analyzing again, otherwise, the repair of the defect is completed and the photolithography mask is verified.