Inspection method and apparatus and lithographic processing cell

A method of calculating process corrections for a lithographic tool, and associated apparatuses. The method comprises measuring process defect data on a substrate that has been previously exposed using the lithographic tool; fitting a process signature model to the measured process defect data, so a...

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Bibliographische Detailangaben
Hauptverfasser: MOS EVERHARDUS CORNELIS, SCHOUMANS NICOLE, ABEN PAUL CORNELIS HUBERTUS, KUBIS MICHAEL, TEN BERGE PETER, SIMONS HUBERTUS JOHANNES GERTRUDUS
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method of calculating process corrections for a lithographic tool, and associated apparatuses. The method comprises measuring process defect data on a substrate that has been previously exposed using the lithographic tool; fitting a process signature model to the measured process defect data, so as to obtain a model of the process signature for the lithographic tool; and using the process signature model to calculate the process corrections for the lithographic tool.