Patent ID: 8277888

Claim:
A method for distributing gases for a deposition process, comprising: providing a showerhead having a plurality of segments, each of the segments comprising a plate, wherein each plate has a distribution face and an opposing dispensing face, wherein the distribution face comprises a plurality of channels formed therein; each of the channels having a plurality of channel thru-ports extending from the channel to the dispensing face of the plate; wherein each plate further comprises a gasket pressed onto the distribution face, wherein the gasket comprises a plurality of cut-outs through the gasket forming a gasket network; wherein each plate further comprising an internal network, the internal network comprising passages formed below the plurality of channels and above the dispensing face, a first set of internal network ports extending from the passages to the distribution face and a second set of internal network thru-ports extending from a top surface of the distribution face to the dispensing face; wherein the set of internal network ports and the set of internal network thru-ports align with the gasket network; flowing a first gas through the plurality of channels; and concurrent with flowing the first gas, flowing a second gas through the gasket network.