Patent ID: 6113699
Filing Date: 2000-09-05
Classification: C23C,H01L,Y10S,Y10T

Abstract:
A structure for controlling gases prior to said gases being allowed to enter a CVD chamber, said structure comprising:one or more input ports connected to one or more sources of said process gases;a first valve connected downstream from each of said one or more input ports for coupling said one or more input ports to a respective first section of a gas line;a second valve connected downstream from each first valve for coupling said respective first section of said gas line to a second section of said gas line;a filter connected between said first valve and said CVD chamber;a third valve, connected downstream from each first valve, connecting said gas line to a vacuum source such that gas may be flowed through said gas line at a desired rate without flowing into said CVD chamber; anda fourth valve adapted to connect said gas line to a source of purging gas, such that said gas line may be purged with an inert gas.