Patent ID: 8330281

Claim:
A multidirectional overlay mark for determining the overlay between separately generated patterns on a substrate, the multidirectional mark comprising: a first set of working zones comprised of a first layer material on the substrate, and each first set of working zones including a plurality of first elements that are each configured to convey overlay information in both a first direction and a second direction that differs from the first direction and the first set of working zones contains at least a first pair of working zones that are diagonally opposed and spatially offset relative to one another; and a second set of working zones comprised of a second layer material on the substrate, and each second set of working zones including a plurality of second elements that are each configured to convey overlay information in both the first direction and the second direction and the second set of working zones contains at least a second pair of working zones that are diagonally opposed and spatially offset relative to one another, wherein the first and second set of working zones are configured to convey overlay between the first and second layer materials and have a same repeating structural pattern in orthogonal directions.