PROCESS AND APPARATUS FOR MASK INSPECTION

摘要

The apparatus for inspection of a mask for X-ray lithography or corpuscular, in particular ionic, ray lithography, where the mask has structures in the shape of areas impermeable to X-rays for X-ray lithography, and the mask has structures in the shape of perforations for corpuscular, in particular ionic, ray lithography, where a receiving stage 4, which is preferably designed as coordinate stage and/or is optionally rotatable and is provided with a perforation, for the mask 2 to be inspected is arranged in the ray path of a projection device for an inspection ray, in particular a corpuscular ray, for example a fine-focused electronic or ionic ray, and where an emitter surface 5 for secondary quanta or secondary radiation 6, resulting from the inspection rays passing through the areas permeable to X-rays or the openings 1 in the mask 2 lying on the receiving stage 4, and a detector 7 for the secondary quanta coming from the emitter surface 5 or the secondary radiation 6 coming from the emitter surface are arranged underneath the stage perforation 3, and where the signals of the detector 7 can be passed, where appropriate after modification, to an image store, is described. ……