Patent ID: 6104964
Filing Date: 2000-08-15
Classification: H01L

Abstract:
A process rate calculation method comprising the steps of:storing, as process result data, deposition rates or etching rates resulting from performing a first group of processes using a process-performing apparatus comprising an etching apparatus, a CVD apparatus, a sputtering apparatus, an exposure apparatus or an oxidation apparatus;storing, as apparatus property data, plasma densities or particle numbers resulting from performing a second group of processes using the process-performing apparatus;determining whether a state of a process which is included in both the first group and the second group and has been performed using the process-performing apparatus is satisfactory, based on the process result data and the apparatus property data; andcalculating an estimated process rate wherein the process result data is used as the estimated process rate when the state of the process is determined to be satisfactory while actual data obtained by actually performing the process using the process-performing apparatus is used as the estimated process rate when the state of the process is determined to be unsatisfactory.