Patent ID: 7039896
Filing Date: 2006-05-02
Classification: G03F

Abstract:
1. A method for making mask edge corrections, comprising steps of: (a) providing initial parameter values and calibration parameter values; (b) performing coherent field calculation; (c) performing process intensity calculation; and (d) calculating a cost function, said cost function being defined as where J in i and J out i are process intensity values at points P in i and P out i , respectively, and C out 0 ≦C 0 ≦C in 0 , C 0 being a cutline of a process intensity or aerial image contour, and C out 0 and C in 0 being some cutlines of said process intensity, which characterize an intensity gradient near said aerial image contour, wherein said cost function is used for optical proximity correction (OPC) purposes in making said mask edge corrections.