Patent ID: 6287984
Filing Date: 2001-09-11
Classification: H01L,Y10S

Abstract:
An apparatus for manufacturing a semiconductor device, which is used for forming a silicon oxide film on a semiconductor wafer, said apparatus comprising:a reaction chamber for exposing the semiconductor wafer to an oxidizing gas at a specific oxidizing temperature;a loading area capable of forming a sealed space in co-operation with said reaction chamber;a separating member for separating the inner space in said reaction chamber from the inner space in said loading area;a carrier for carrying said semiconductor wafer between the interior of said reaction chamber and the interior of said loading area;a first gas flow rate control unit for controlling the flow rate of oxygen to flow in said reaction chamber;a second gas flow rate control unit for controlling the flow rate of oxygen to flow in said loading area;an oxygen concentration sensor capable of separately measuring an oxygen concentration in said reaction chamber and an oxygen concentration in said loading area; anda control unit for determining an insertion timing of said semiconductor wafer from said loading area into said reaction chamber on the basis of the oxygen concentration in said reaction chamber and said oxygen concentration in said loading area.