Patent Document ID: 20160161840
Application ID: 14560388
Patent Flag: 0

Claim One:
1. A method comprising: calibrating an optical proximity correction (OPC) model for a structure to be formed in a substrate; simulating a critical dimension (CD) of the structure at at least two locations along a substrate profile of the structure using the OPC model; comparing the simulated CD of the structure at the at least two locations along the substrate profile against a measured CD at the at least two locations along the substrate profile; recalibrating the OPC model based on the comparing of the simulated CD against the measured CD at the at least two locations along the substrate profile; repeating the steps of simulating, comparing, and recalibrating until comparing at a first of the at least two locations along the substrate profile converges to a first criteria and comparing at each other of the at least two locations along the substrate profile converges to a corresponding criteria; and forming the structure using the recalibrated OPC model.