Patent ID: 6794308
Filing Date: 2004-09-21
Classification: C23C

Abstract:
A method of reducing by-product deposition inside wafer processing equipment, comprising the steps of:providing a chamber and a pump for exhausting gases from said chamber; placing a semiconductor wafer within the chamber; connecting the chamber to said pump through a conduit, said conduit having an interior wall; placing a heating element within the interior of the conduit to increase the temperature of said interior wall within the conduit sufficiently to maintain by-product gases passing therethrough from said chamber in the gaseous state; introducing a plurality of reactant gases into the chamber and reacting the reactant gases to form said by-product gases of the reaction of said reactant gases; and causing said by-product gases to travel from said chamber to said pump through said conduit having heated interior walls sufficient to maintain said by-product gases in the gaseous state to minimize solidification of said by-products on the walls of said conduit and said pump.