Patent ID: 6801824
Filing Date: 2004-10-05
Classification: G03F,G05B,Y02P

Abstract:
A substrate-selecting equipment comprising:at least one defect-registering part; a photosensitive material layer lot check result-registering part; a substrate-selecting part; and a defect probability-calculating part, wherein: said at least one defect-registering part registers within a database a result of inspection, said inspection being for a defect, said photosensitive material layer lot check result-registering part registers within said database a result of a lot check for a photosensitive material layer on a substrate, said substrate-selecting part selects an objective substrate from more than one said substrate, said objective substrate being selected by said substrate-selecting part based upon said result of said inspection and said result of said lot check, based upon said result of said inspection and said result of said lot check, said defect probability-calculating part performs a calculation for said objective substrate of the probability that no defect happens on a photomask, said calculation being used by said substrate-selecting part to select said objective substrate, said defect and a pattern area are within a defect area, said defect area being larger than said defect, a location of said defect area corresponds to a defect position on said photomask, said defect probability-calculating part calculates the probability that said defect happens in a surrounding part of said pattern area and calculates the probability that another defect happens in another surrounding part of another pattern area of said photomask, and said probability that said defect happens in said surrounding part and said probability that said another defect happens in said another surrounding part being used to calculate said probability that no defect happens on said photomask.