Patent ID: 6841489

Claim:
A method of manufacturing a semiconductor device, the method comprising the steps of: (a) introducing a first processing substrate into a first CVD film-forming chamber; (b) raising a temperature of the first processing substrate to a predetermined processing temperature in the first CVD film-forming chamber; (c) growing a first film on the first processing substrate in the first CVD film-forming chamber by supplying vapor phase material in a material line to the first CVD film-forming chamber; (d) introducing a second processing substrate into a second CVD film-forming chamber; (e) raising a temperature of the second processing substrate to the predetermined processing temperature in the second CVD film-forming chamber; and (f) growing a second film on the second processing substrate in the second CVD film-forming chamber by supplying the vapor phase material in the material line to the second CVD film-forming chamber, wherein: said step (c) includes the step of supplying the vapor phase material in the material line selectively to the first CVD film-forming chamber; said step (f) includes the step of supplying the vapor phase material in the material line selectively to the second CVD film-forming chamber; and said step (f) is performed after said step (c) by switching, from the first CVD film-forming chamber to the second CVD film-forming chamber, a chamber to which the vapor phase material in the material line is supplied so that a pressure of the vapor phase material in the material line is maintained at a substantially constant value.