DEEP SILICON ETCHING DEVICE AND GAS INTAKE SYSTEM FOR DEEP SILICON ETCHING DEVICE

摘要

A deep-trench silicon etching apparatus, including a reaction chamber and a gas source cabinet, the gas source cabinet is connected to the reaction chamber via two independently controlled gas paths; wherein, a first gas path is used to introduce process gas for etch step from the gas source cabinet into the reaction chamber; a second gas path is used to introduce process gas for deposition step from the gas source cabinet into the reaction chamber. The present invention is used to solve the problems of gas mixture and gas delay occurring when process steps are switched.