Patent ID: 6242365
Filing Date: 2001-06-05
Classification: H01L

Abstract:
A method for preventing a target film deposited on a wafer in production from cracking after a post annealing procedure, comprising steps of:a) forming a plurality of target films on respective bare wafers;b) annealing said bare wafers with said target films;c) observing whether said target films on said bare wafers crack;d) detecting thermal shrinkage rates of said target films on said bare wafers to determine a crack limit when there is film cracking observed in said step c);e) adjusting deposition conditions, repeating said steps a) and b), and then detecting thermal shrinkage rates of said target films newly formed on bare wafers;f) repeating said step e) until no target films on bare wafers having thermal shrinkage rates exceeding said crack limit; andg) allowing said target film to be deposited on said wafer in production under said adjusted deposition conditions.