System and methods for classifying anomalies of sample surfaces

Details System and methods for classifying anomalies of sample surfaces System and methods for classifying anomalies of sample surfaces

2006-05-02

2006-05-02

Stafira, Michael P. (Department: 2877)

Optics: measuring and testing

Inspection of flaws or impurities

Surface condition

C356S237400

Reexamination Certificate

active

07038772

ABSTRACT:
Two or more defect maps may be provided for the same sample surface at different detection sensitivities and/or processing thresholds. The defect maps may then be compared for better characterization of the anomalies as scratches, area anomalies or point anomalies. This can be done without concealing the more significant and larger size defects amongst numerous small and immaterial defects. One or more defect maps can be used to report the anomalies with classified information; the results from this map(s) can be used to monitor the process conditions to obtain better yield.

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