Method and apparatus for inspecting defects in multiple...

Optics: measuring and testing – Inspection of flaws or impurities – Surface condition

Reexamination Certificate

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C356S394000, C356S398000, C382S144000, C382S145000

Reexamination Certificate

active

07433032

ABSTRACT:
In a method of inspecting defects, a first actual region of an actual object is inspected based on a first characteristic parameter as an inspection condition. A point where an inspection region of the actual object is changed into a second actual region from the first actual region is determined. The second actual region is then inspected based on a second characteristic parameter as the inspection condition. The first and second parameters may include contrast of a light that is reflected from a reference object, intensity of the light, brightness of the light, a size of a minute structure on the reference object, etc. The characteristic parameters of each reference region on the reference object are set. Thus, the defects may be accurately classified so that a time and a cost for reviewing the defects may be markedly reduced.

REFERENCES:
patent: 6437862 (2002-08-01), Miyazaki et al.
patent: 6614519 (2003-09-01), Latta et al.
patent: 6850320 (2005-02-01), Shibata et al.
patent: 2003/0223058 (2003-12-01), Leong et al.
patent: 2004/0057611 (2004-03-01), Lee et al.
patent: 2004/0105578 (2004-06-01), Tsuchiya et al.
patent: 2004/0169850 (2004-09-01), Meeks
patent: 2002-148031 (2002-05-01), None
patent: 2003-49312 (2003-06-01), None
patent: 2003-52657 (2003-06-01), None
English language abstract of Japanese Publication No. 2002-148031.
English language abstract of Korean Publication No. 2003-49312.
English language abstract of Korean Publication No. 2003-52657.

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