Patent ID: 6334928
Filing Date: 2002-01-01
Classification: B01D,C23C,Y02C,Y02P

Abstract:
A semiconductor processing system comprising:a process chamber for accommodating a target substrate; a support member for supporting the target substrate in said process chamber; a gas supply mechanism for supplying a process gas into said process chamber; an exhaust mechanism having an exhaust line connected to said process chamber, for flowing an exhaust gas, including fluorocarbon gas, from said process chamber, and having an exhaust pump disposed on said exhaust line, for exhausting an interior of said process chamber; a trap capable of trapping the fluorocarbon gas in the exhaust gas by cooled adsorption and releasing the adsorbed fluorocarbon gas by heating; a regeneration line for releasing the adsorbed fluorocarbon gas from said trap while said trap is separated from the exhaust gas; a collection member connected to said regeneration line to collect the fluorocarbon gas released from said trap; a switching mechanism for switching modes of said trap between a trap mode in which said trap communicates with said exhaust line and a regeneration mode in which said trap communicates with said regeneration line, wherein said trap when in the trap mode is inserted between said process chamber and said exhaust pump; a cooling member for cooling said trap which is in the trap mode; and a heating member for heating said trap which is in the regeneration mode, wherein said cooling member cools said trap of which is in the trap mode to a specific temperature not more than âˆ’120Â° C., and said specific temperature is set such that the fluorocarbon gas is adsorbed on said trap by cooled adsorption, and another gas having a vapor pressure higher than that of the fluorocarbon gas passes through said trap.