Patent ID: 6337271
Filing Date: 2002-01-08
Classification: B24B

Abstract:
A method for simulating polishing an uneven surface of a substrate with a polishing cloth in order to level the uneven surface, comprising the steps of:(a) determining the deformation amount of the polishing cloth imparted by a convex portion of the substrate using a truncated cone as the shape of the deformation of the polishing cloth; (b) determining the distribution of the polishing pressure of the polishing cloth based on (a) the determination of the deformation amount of the polishing cloth; (c) determining the distribution of the polishing of the substrate effected by the polishing cloth after a fixed interval of time based on (b) the determination of the distribution of the polishing pressure of the polishing cloth; (d) determining a distribution of a height of the substrate based on (c) the determination of the distribution of the polishing of the substrate effected by the polishing cloth after a fixed interval of time; (e) determining the offset of the substrate based on (d) the determination of the distribution of the height of the substrate; and (f) generating an output expressing the offset.