Patent ID: 6391116
Filing Date: 2002-05-21
Classification: C30B,H01L

Abstract:
A semiconductor device manufacturing apparatus, comprising:an oxidizing treatment furnace tube in which a semiconductor wafer is subjected to a treatment; a process gas introducing pipe through which at least one process gas is introduced into said furnace tube at a first end thereof; a wafer support boat for inserting said semiconductor wafer mounted thereon into said furnance tube through a second end thereof; an additional gas introducing pipe for supplying an additional gas to said semiconductor wafer as the semiconductor wafer is inserted into said furnace tube, the additional gas introducing pipe being connected to said second end of the furnace tube, wherein, as said wafer support boat inserts the semiconductor wafer into said furnace tube, any one of inert gas and nitrogen gas is introduced into said furnace tube as one process gas of said at least one process gas through said process gas introducing pipe and gas containing oxygen is supplied to said semiconductor wafer as the additional gas through said additional gas introducing pipe, said additional gas forming a gas atmospheric layer having a layer boundary which is substantially perpendicular to an insertion direction of the semiconductor wafer; at least one source of said at least one process gas connected to said process gas introducing pipe; and at least one source of said additional gas connected to said additional gas introducing pipe.