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We propose a method to model the wet etch process within the Shallow Trench Isolation (STI) module in the CMOS technology. To model a process is the first step in the design of a run to run system, in order to reduce for example the lot to lot variability (a lot equals 25 wafers). The developed predictive model is based on a Design Of Experiments (DOE).
Date of Conference: 16-18 May 2011