Patent ID: 11953823
Assignee: ASML NETHERLANDS B.V.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 15:
16. A computer program product comprising a non-transitory computer-readable medium having computer readable instructions therein, the instructions, upon execution by a computer system, configured to cause the computer system to at least:
obtain an already-calibrated optical proximity correction (OPC) model that is configured to model behavior of OPC modifications to a pre-OPC design in a process for forming a pattern on a substrate using a post-OPC design in a patterning process;
collect process control data for substrates patterned using the patterning process in the manufacturing environment;
analyze the collected process control data to verify that the OPC model is correcting pattern features within a selected threshold; and
for pattern features falling outside the selected threshold, determine a modification to an imaging process that uses the optical proximity correction (OPC) model, to correct imaging errors.