Patent ID: 7966582

Claim:
A method for modeling long-range extreme ultraviolet lithography (EUVL) flare, the method comprising: receiving an evaluation point in a layout; receiving an EUVL model, which includes: a short-range component which includes one or more discretized kernels which are discretized using a high sampling rate over a small-sized ambit; and a medium-range component which includes one or more discretized kernels which are discretized using a medium sampling rate over a medium-sized ambit; determining an indicator at the evaluation point, wherein the indicator indicates whether a pattern is expected to print at the evaluation point, and wherein determining the indicator includes: convolving, at the evaluation point, the short-range component with the layout over the small-sized ambit; and convolving, at the evaluation point, the medium-range component with the layout over the medium-sized ambit; and storing the indicator, thereby enabling a user to determine whether the pattern is expected to print at the evaluation point.