Patent ID: 6204194
Filing Date: 2001-03-20
Classification: C23C,H01L

Abstract:
A method for producing a semiconductor device, in a heating furnace, in which a reaction tube is installed and a temperature-equalizing zone is formed in the reaction tube, comprising the steps of:locating semiconductor-silicon wafers in the temperature-equalizing zone in a vertical stack so that their like surfaces are parallel to one another and are face to face, setting distances of clearances between said wafers to approximately 5 mm or more;rotating said semiconductor-silicon wafers around an axis perpendicular to the wafer surface; and,introducing a reaction gas into said clearances by discharging essentially all of the reaction gas from discharging ports of a first gas-guiding means, said discharging ports located at a first position in the proximity of edges of the semiconductor-silicon wafers, said dischaging ports facing said clearances.