Methods and systems for wafer bonding alignment compensation
Abstract:
Embodiments of methods and systems for wafer bonding alignment compensation are disclosed. The method comprises bonding a first pair of wafers including multiple bonding alignment mark pairs on the first pair of wafers; first analyzing a translational misalignment and a rotational misalignment between the first pair of wafers based on a measurement of at least two bonding alignment mark pairs; controlling a wafer position adjustment module to compensate for the translational misalignment and the rotational misalignment during bonding of a second pair of wafers based on the first analysis; second analyzing a mean run-out misalignment between the first pair of wafers based on a measurement of the multiple bonding alignment mark pairs; and controlling a wafer deformation adjustment module to compensate for the run-out misalignment during bonding of a third pair of wafers based on the second analysis.
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