Patent ID: 6323560
Filing Date: 2001-11-27
Classification: G03F,Y10T

Abstract:
In a semiconductor device includinga semiconductor device forming region in which a plurality of patterns constituting semiconductor elements of prescribed shapes are formed on a semiconductor substrate,a registration accuracy measurement mark forming region for measuring registration accuracy between each of said layers constituting said semiconductor device,a first semiconductor element forming member formed in a first layer in said semiconductor device forming region,a first measurement mark formed in same manufacturing step as said first semiconductor element forming member in said registration accuracy measurement mark forming region, having a pattern receiving same influence of aberration as said first semiconductor element forming member when irradiated with light,a second semiconductor element forming member formed in a second layer above said first layer in said semiconductor device forming region, anda second measurement mark formed in same manufacturing step as said second semiconductor element forming member for measuring registration accuracy between said first semiconductor element forming member and said second semiconductor element forming member in said registration accuracy measurement mark forming region, and having a pattern receiving same influence of aberration as said second semiconductor element forming member when irradiated with light, whereinsaid first mark has a pattern includes a plurality of first auxiliary measurement marks combined along at least four sides of a virtual rectangle, the first auxiliary measurement mark having approximately same size as pattern size of said first semiconductor element forming member, andsaid second measurement mark includes a plurality of second auxiliary measurement marks combined along at least four sides of a virtual rectangle, said second auxiliary measurement mark having approximately same size as pattern size of said second semiconductor element forming member,a method of repairing, part of said first auxiliary measurement mark of said first measurement mark and part of said second auxiliary measurement mark of said second measurement mark having a defect comprising the step of:repairing said defective first and second auxiliary measurement marks, and simultaneously, performing same processing on said first auxiliary measurement mark and said second auxiliary measurement mark which are in point symmetry to said defective first and second auxiliary measurement marks with respect to an intersection of diagonals of said virtual rectangle.