Method of determining control parameters of a device manufacturing process

A method for determining a metric of a feature on a substrate obtained by a semiconductor manufacturing process involving a lithographic process, the method including: obtaining an image of at least part of the substrate, wherein the image includes at least the feature; determining a contour of the...

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Bibliographische Detailangaben
Hauptverfasser: Anunciado, Roy, Van Ingen Schenau, Koenraad, Tel, Wim Tjibbo, Van Gorp, Simon Hendrik Celine, Maslow, Mark John, Slachter, Abraham, Staals, Frank, Jochemsen, Marinus, Warnaar, Patrick
Format: Patent
Sprache:eng
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Zusammenfassung:A method for determining a metric of a feature on a substrate obtained by a semiconductor manufacturing process involving a lithographic process, the method including: obtaining an image of at least part of the substrate, wherein the image includes at least the feature; determining a contour of the feature from the image; determining a plurality of segments of the contour; determining respective weights for each of the plurality of segments; determining, for each of the segments, an image-related metric; and determining the metric of the feature in dependence on the weights and the calculated image-related metric of each of the segments.