Patent ID: 7175713

Claim:
An apparatus for cyclical deposition of thin films on a semiconductor substrate, comprising: a process chamber, comprising: a body defining a reaction region; and a lid assembly, comprising a gas distribution system having a first path and a second path to separate and dose at least one process gas to the reaction region, said first and second paths extending from an intake port for each process gas, to an outlet channel, and to the reaction region of the chamber, wherein a first set of valves dosing the process gases are between the intake port and the outlet channel, the first and second paths formed in the lid assembly and a showerhead, the showerhead comprising: a plurality of openings fluidly coupled to the second path and the reaction region; and a valved exhaust system synchronized with the first set of valves dosing the process gases into the reaction region to separate exhausted gases, wherein at least one of the plurality of openings further comprises a gas nozzle coupled to the at least one opening.