Patent ID: 9312161
Filing Date: 2016-04-12
CPC Classification: H01L

Claim Text:
1. Device for alignment of a first wafer with a second wafer with the following features: a means for determining local alignment errors which have occurred due to strain and/or distortion of the first wafer relative to the second wafer, with a first strain map of the first wafer and/or a second strain map of the second wafer and evaluation means for evaluation of the first and/or second strain maps, at least one receiving means for receiving at least one of the wafers, the at least one receiving means including a compensation means for active, at least partial compensation of local and/or global distortions of the wafer and alignment means for alignment of the wafers with consideration of position maps and/or strain maps and simultaneous compensation of the local alignment errors by the compensation means of the at least one receiving means.