Method for classifying defects occuring at or near a surface of a smooth substrate

In an optical inspection system, defects such as particles, pits, subsurface voids, mounds, or other defects occurring at or near the smooth surface of a substrate are classified by type and size based on the magnitude S of a signal produced by collected light for each of a plurality N of different...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	STOVER, JOHN C, IVAKHNENKO, VLADIMIR I
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS SEMICONDUCTOR DEVICES TESTING
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