Patent ID: 7656512

Claim:
A method for determining process settings of a photolithographic system, the method comprising: correlating a plurality of different, correlated structure shape values with a plurality of different, correlated process values for fabricating a plurality of structures having such different, correlated structure shape values, wherein the correlating produces a function that correlates the different, correlated structure shape values with the different, correlated process values; determining one or more shape values of a plurality of fabricated structures based on one or more measurements obtained from such fabricated structures using a metrology tool, wherein such fabricated structures were all fabricated with a substantially same set of actual process values; and determining one or more of the actual process values that were used to fabricate the fabricated structures based on the determined one or more shape values of the fabricated structures and the function that correlates the different, correlated structure shape values with the different, correlated process values.