Patent ID: 6211081
Filing Date: 2001-04-03
Classification: C23C,H01L

Abstract:
A method of producing a semiconductor apparatus, when a thin film is formed by a CVD method on a semiconductor substrate in a CVD reactive chamber by using semiconductor production equipment comprising a substrate introducing chamber, a substrate stand-by chamber, a gate valve, a cover, a shutter and a shaft, said method comprising the steps of:reducing pressure in said substrate introducing chamber to not more than a predetermined value with said shutter;reducing pressure in said substrate stand-by chamber to not more than a predetermined value with said shutter being closed and said cover being located in said substrate stand-by chamber;opening said gate valve so as to introduce said semiconductor substrate from said substrate introducing chamber into said substrate stand-by chamber and to retain said semiconductor substrate in said substrate stand-by chamber in a position separated from said cover, and closing said gate valve;after introducing a reactive gas into said substrate stand-by chamber with said shutter being closed, and placing the surface to be processed of said semiconductor substrate towards the shaft so that the opening of said cover is closed when the pressure in said substrate stand-by chamber obtains the predetermined value, and forming a region where the reactive gas remains in proximity of the surface of said semiconductor substrate, reducing an introducing flow rate of the reactive gas into the stand-by chamber;introducing an inert gas into said CVD reactive chamber so as to keep the pressure in said CVD reactive chamber at the predetermined value;heating a top plate of said CVD reactive chamber so as to set a temperature of said CVD reactive chamber to a predetermined value;opening said shutter so as to introduce said cover and said semiconductor substrate into said CVD reactive chamber by moving them by said shaft, and heating a rear side of said semiconductor substrate by heat radiation from the top plate so as to set a temperature of said semiconductor substrate to a predetermined value; andstopping the heating after a constant time passes so as to introduce said cover and said semiconductor substrate into said substrate stand-by chamber by moving them by said shaft, and closing said shutter.