Optics: measuring and testing – By alignment in lateral direction – With registration indicia
Patent
1990-08-30
1992-10-06
Turner, Samuel A.
Optics: measuring and testing
By alignment in lateral direction
With registration indicia
250548, 250557, 356400, G01B 1100
Patent
active
051536781
ABSTRACT:
A method of determining regularity of a pattern array on a substrate to enable sequential positioning of patterns of the array relative to a reference position includes the step of calculating a reliability degree regarding a measured value of a pattern position, and the step of determining the regularity of the pattern array on the basis of the calculated reliability degree, and a design value and the measured value of the pattern position.
REFERENCES:
patent: 4677301 (1987-06-01), Tanimoto et al.
patent: 4710026 (1987-12-01), Magome et al.
patent: 4780617 (1988-10-01), Umatate et al.
patent: 4918320 (1990-04-01), Hamasaki et al.
Kurtz, II Richard E.
Nikon Corporation
Turner Samuel A.
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