Patent ID: 6344387
Filing Date: 2002-02-05
Classification: C23C,H01L

Abstract:
A film-formation method for forming a film the surface of semi-conductor wafers; said method comprising the steps of:washing or cleaning upper surfaces of wafers to remove organic substances from the upper surfaces; mounting the wafers in a wafer boat having film thickness equalization plates so that an upper surface of each of the wafers faces a respective one of said film thickness equalization plates with a space present therebetween, said film thickness equalization plates being substantially of the same size as said wafers; placing said wafer boat with said wafers in a film forming reaction furnace; and performing a film formation reaction within said reaction furnace to deposit an insulating film on the cleaned upper surfaces of the wafers, making use of the film thickness equalization plates to obtain a high level of accuracy in uniformity of thickness of the insulating film thus formed.