Patent ID: 7289872

Claim:
A computer-readable recording medium that stores therein a polishing-condition predicting program for predicting a polishing condition by using a test substrate having a wiring groove formed in a predetermined shape, the polishing condition in polishing a thin film formed on a substrate by a polisher, the polishing-condition predicting program causing a computer to execute: receiving a possible value of parameters of a wiring width in a region of interest on a thin film formed on the test substrate, the parameter values included in a groove depth function model expressing a maximum depth at which a polisher enters into the groove in the region; calculating a depth model value expressing a depth at which the polisher enters into the groove in the region and an adjacent region thereof by substituting the possible parameter and dimensional data of the wiring width into the groove depth function model; calculating a pressure to be applied to the region by substituting the model values of the region and the adjacent region into a pressure function model expressing pressure by height of the thin film in each region; calculating thickness of the thin film in the region after the polishing by substituting the calculated pressure into a speed function model expressing a polishing speed; calculating a difference between the calculated thickness and an actual thickness of the thin film measured in the region after the polishing; and determining an optimum value for the parameters of the wiring width based on a result of calculation at the calculating a difference.