Alignment systems and methods for lithographic systems

An alignment system for a lithographic apparatus has a source of alignment radiation; a detection system that has a first detector channel and a second detector channel; and a position determining unit in communication with the detection system. The position determining unit is constructed to proces...

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Hauptverfasser: HUIJBREGTSE JEROEN, BURGHOORN JACOBUS, SCHETS SICCO I, VAN HORSSEN HERMANUS G, JEUNINK ANDRE B, NAVARRO Y KOREN RAMON, MEGENS HENRY, VAN BILSEN FRANCISCUS B.M, GERTRUDUS SIMONS HUBERTUS J, SCHUURHUIS JOHNY R, DUNBAR ALLAN R, FRANCISCUS VAN HAREN RICHARD J, TOLSMA HOITE P.T, LEE BRIAN Y.B, HINNEN PAUL C
Format: Patent
Sprache:eng
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Zusammenfassung:An alignment system for a lithographic apparatus has a source of alignment radiation; a detection system that has a first detector channel and a second detector channel; and a position determining unit in communication with the detection system. The position determining unit is constructed to process information from said first and second detector channels in a combination to determine a position of an alignment mark on a work piece, the combination taking into account a manufacturing process of the work piece. A lithographic apparatus has the above mentioned alignment system. Methods of alignment and manufacturing devices with a lithographic apparatus use the above alignment system and lithographic apparatus, respectively.