Patent ID: 7555395
Filing Date: 2009-06-30
Classification: G03F

Abstract:
1. A method of creating an enhanced profile library, the method comprising: creating an enhanced reference structure in an optically tunable soft mask (OTSM) layer on a substrate; measuring the enhanced reference structure in the OTSM layer with a metrology device, the measurement generating enhanced reference data comprising an enhanced reference signal, or an enhanced reference profile shape, or enhanced reference profile parameters, or any combination thereof; comparing the enhanced reference signal, or the enhanced reference profile shape, or the enhanced reference profile parameters, or any combination thereof, to data in the enhanced profile library to determine whether a matching condition exists, the data in the enhanced profile library being characterized by an enhanced set of wavelengths; either identifying the enhanced reference structure as a member of the enhanced profile library using an enhanced profile library data associated with the matching condition when the matching condition is found, or applying a first corrective action to further determine the identity of the enhanced reference structure when the matching condition cannot be found; and storing data associated with at least the first corrective action in the enhanced profile library, wherein the enhanced profile library comprises a plurality of enhanced structures created in an OTSM layer and a plurality of enhanced structures created in a material layer on the substrate using an OTSM layer as a mask, the OTSM layer including enhanced features having enhanced optical properties created by activating metrology-enhancing material in the OTSM layer.