Patent ID: 8111376
Filing Date: 2012-02-07
Classification: G03F

Abstract:
1. A method for process control in a lithographic process, comprising: a) performing metrology on a substrate before performing a lithographic patterning process on the substrate; b) generating one or more correctables to the lithographic patterning process based on the metrology performed in a) by performing an analysis of deformation of the substrate during chucking of the substrate during the patterning process wherein performing the analysis includes monitoring a localized stress of the substrate at a plurality of locations distributed across the substrate at a spatial resolution of between about 1 mm and about 5 mm; and c) adjusting the lithographic patterning process performed on the substrate with the correctables, if the metrology is performed before the patterning process; or d) adjusting the lithographic patterning process performed on a subsequent substrate with the correctables, if the metrology is performed after the patterning process; or e) both c) and d).