Modelling and control of plasma etching processes in the semiconductor industry
Despite its widespread use, plasma etching remains a poorly understood operation. Using chromatic monitor to measure key plasma parameters, the etch process was characterised using response surface methodology. In order to develop control-oriented models, open-loop dynamic testing was carried out. Dynamic models of a RIE system were developed using both standard system identification algorithms and neural network techniques. (C) 1999 Elsevier Science Ltd. All rights reserved.
modelling plasma etch processing monitoring neural networks statistical techniques