Patent ID: 6503832
Filing Date: 2003-01-07
Classification: C23C,H01L,Y10S

Abstract:
A method of removing residual particles from a chemical vapor deposition system having a reaction chamber, a reaction gas source, and carrier and dilute transport conduits disposed in selective communication therewith, said method comprising the steps of:(a) establishing an interconnecting transport conduit extending between the carrier and dilute transport conduits; (b) establishing a gas valve for selectively opening and closing said interconnecting transport conduit; (c) introducing at least one first wafer into the reaction chamber and processing therein by actuating the chemical vapor deposition system; (d) maintaining said gas valve closed during said processing of said first wafer; (e) removing said first wafer from the reaction chamber following said processing; (f) momentarily opening and thereafter closing said gas valve prior to purging for causing the release of residual particles from surface adhesion; (g) purging the system subsequent to said step (f) by again opening said gas valve for the introduction of the residual particles into the reaction chamber; and, (h) extracting the residual particles from said reaction chamber.