Method and system for integrated circuit backside navigation

The backside navigation method of the present invention includes milling a fiducial opening through the substrate of an integrated circuit. The milling process is stopped when the fiducial opening reaches the bottom of a trench isolation structure. The trench isolation structure delineated by the fi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LE ROY ERWAN, LUNDQUIST THEODORE, THOMPSON WILLIAM B, THOMPSON MARK ALAN, KARDACH CATHERINE
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The backside navigation method of the present invention includes milling a fiducial opening through the substrate of an integrated circuit. The milling process is stopped when the fiducial opening reaches the bottom of a trench isolation structure. The trench isolation structure delineated by the fiducial opening may be imaged and registered to a computer aided design layout image to achieve sub-micron navigation resolution.