Patent ID: 6787462
Filing Date: 2004-09-07
Classification: H01L,Y10S

Abstract:
A method of manufacturing a semiconductor device, comprising:(a) providing a semiconductor substrate including a first insulating layer having a buried copper wiring formed in its surface region; (b) monitoring a total partial pressure of oxygen and water vapor within a process chamber in which said semiconductor substrate is to be introduced; (c) in case where the total partial pressure of oxygen and water vapor within said process chamber exceeds a prescribed value as a result of said monitoring, carrying out a treatment to lower the total partial pressure of oxygen and water vapor to a level not higher than said prescribed value; (d) introducing said substrate into said process chamber in which the total partial pressure of oxygen and water vapor is not higher than said prescribed value; (e) subjecting said copper wiring to a reducing treatment within said process chamber; and (f) forming a second insulating layer to cover the copper wiring which has been subjected to said reducing treatment.