Patent ID: 7927770
Filing Date: 2011-04-19
Classification: B82Y,G03F

Abstract:
1. A method for correcting a defect in an EUV mask, the method comprising: preparing an EUV mask including: recognizing a defect region in the pattern, the defect region being continuous from a desired pattern edge of the pattern; defining a first region and a second region on the defect region, the second region extending from the desired pattern edge by a given distance, the first region being defined on a rest of the defect region; removing the first region of the anti-reflection layer and the absorption layer by irradiating a beam thereonto in a first atmosphere; removing the second region of the anti-reflection layer and the absorption layer by irradiating the beam thereonto in a second atmosphere; and oxidizing an exposed side surface of the desired pattern edge of the absorption layer.