METHODS FOR MODEL-BASED PROCESS SIMULATION

摘要

Lithography simulation using a differential model. The differential model describes differences in the imaging characteristics of two scanners related to tunable and non-tunable scanner settings. A model for one of the two scanners is derived by using the model of the other scanner and the differential model. Similarly, a sensitivity model expresses the differences in the imaging characteristics of one scanner related to different scanner settings. Additionally, methods are provided for calibrating the differential model and the sensitivity model by comparison with printing results.