Patent ID: 9657845
Date: 2017-05-23
CPC Classifications: B01D,C23C,F04B,F16K,Y10T

Claim:
1. A gas-phase reactor configured for forming semiconductor devices comprising; a reaction chamber; a substrate holder disposed within the reaction chamber and configured to hold a semiconductor substrate; a vacuum source fluidly coupled to the reaction chamber; and a variable conductance gas distribution system disposed over the substrate holder, the variable conductance gas distribution system comprising: wherein, when the gas distribution system is open, gas flows between the one or more first features and the one or more second features, wherein when the gas distribution system is closed, a seal forms between the one or more first features and the one or more second features, and wherein the first member and the second member are spaced apart a first distance for a first process to flow a purge gas through the variable conductance gas distribution system at a first conductance and spaced apart a second distance for a second process to flow one or more reactants through the variable conductance gas distribution system at a second conductance, the first conductance different from the second conductance.