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, SIMONS HUBERTUS J.G, BURGHOORN JACOBUS, SCHETS SICCO I, VAN HORSSEN HERMANUS G, JEUNINK ANDRE B, NAVARRO Y KOREN RAMON, MEGENS HENRY, VAN BILSEN FRANCISCUS B.M, 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.