Inspection method for semiconductor wafer and apparatus for...

Radiant energy – Inspection of solids or liquids by charged particles

Reexamination Certificate

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Details

C250S307000, C250S310000, C250S311000, C250S442110, C250S492200

Reexamination Certificate

active

07485858

ABSTRACT:
An object of the present invention is to provide a suitable method of observing a wafer edge by using an electron microscope. The electron microscope includes a column which can take an image in being tilted, and thus allows a wafer edge to be observed from an oblique direction.

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patent: 6438438 (2002-08-01), Takagi et al.
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patent: 6756589 (2004-06-01), Obara et al.
patent: 2001/0020194 (2001-09-01), Takagi et al.
patent: 2005/0024632 (2005-02-01), Plemmons et al.
patent: 2007/0127016 (2007-06-01), Meeks et al.
patent: 7-201946 (1995-08-01), None
patent: 2000-30652 (2000-01-01), None
patent: WO 00/03413 (2000-01-01), None

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