Verfahren zur Bestimmung von Korrekturwerten für die Justage eines Halbleiterwafers in einem Projektionsapparat zur photolithographischen Strukturierung einer Metallschicht
The method has the surface of a semiconductor wafer substrate provided with an array of circuit structures, each having adjustment markings (27) at the edges of an exposure field, at least 2 cover surfaces applied to the upper side of the semiconductor wafer (10) so that at least 2 adjustment markin...
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Zusammenfassung: | The method has the surface of a semiconductor wafer substrate provided with an array of circuit structures, each having adjustment markings (27) at the edges of an exposure field, at least 2 cover surfaces applied to the upper side of the semiconductor wafer (10) so that at least 2 adjustment markings are covered, before deposition of a metal layer (35) on the substrate surface, with subsequent removal of the cover surfaces for allowing the revealed adjustment markings to be used for determining the required correction of the semiconductor wafer position. |
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