Patent ID: 6632692
Filing Date: 2003-10-14
Classification: G03F

Abstract:
A method, comprising:measuring a critical dimension of a plurality of features formed in a patterned layer of photoresist that is formed above a process layer formed on a wafer; measuring a critical dimension of a plurality of features formed in a process layer formed on a wafer; providing said measured critical dimensions of said features in said patterned layer of photoresist and said features in said process layer to a controller that determines, based upon said measured critical dimensions of said features in said patterned layer of photoresist and said features in said process layer, an exposure dose of an exposure process to be performed on at least one subsequently processed wafer; forming a layer of photoresist above a process layer formed above a subsequently processed wafer; and performing said exposure process on said layer of photoresist on said subsequently processed wafer using said determined exposure dose.