Charged particle assessment method and system

A charged particle assessment method for identifying candidate defects in samples by scanning a charged particle beam across a sample; the method comprising: obtaining a first reference image from a first region of the sample and a second reference image from a second region of the sample using a ch...

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Bibliographische Detailangaben
Hauptverfasser: DAVE, DHARA, KUIPER, VINCENT SYLVESTER
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:A charged particle assessment method for identifying candidate defects in samples by scanning a charged particle beam across a sample; the method comprising: obtaining a first reference image from a first region of the sample and a second reference image from a second region of the sample using a charged particle assessment apparatus; obtaining a sample image from a third region of the sample using the charged particle assessment apparatus; and comparing the sample image to the first reference image and to the second reference image to identify any candidate defects in the third region; wherein the first reference image and/or the second reference image are obtained with a higher fidelity than the sample image.