Method of inspecting particles on semiconductor devices

Optics: measuring and testing – By particle light scattering

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356237, G01B 902

Patent

active

054445299

ABSTRACT:
Liquid water drops are formed around particles situated on a substrate and diffuse laser light patterns are intensified by the liquid water drops to make it possible to detect minute particles of 0.1 .mu.m and less in dimension.

REFERENCES:
patent: 4073975 (1978-02-01), Buckwalter et al.
patent: 5061068 (1991-10-01), Menon

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