Patent ID: 6120605
Filing Date: 2000-09-19
Classification: C23C

Abstract:
A semiconductor processing system comprising:a reactor for processing a single wafer, said reactor having an inner wall and a bottom wall;a susceptor for supporting a wafer to be processed inside said reactor;a gas injector for injecting a processing gas downward onto said wafer supported by said susceptor;an exhaust port provided with said reactor, for a gas being pumped from said reactor; anda gas flow adjuster arranged around said susceptor and having at least one slit through which said injected gas is discharged to said exhaust port, said slit having an opening area smaller adjacent to said exhaust port than away from said exhaust port to cause said injected gas to uniformly flow over said wafer in a radial direction, wherein said gas flow adjuster includes an annular top plate, and said slit is defined by a circumference of said plate and said reactor inner wall, said gas flow adjuster further including an adjuster cover for covering said slit to adjust the opening area of said slit, said adjuster cover being movable in a radial direction.