Patent ID: 8293648
Filing Date: 2012-10-23
Classification: C23F,H01L,Y10S

Abstract:
1. A method of manufacturing a semiconductor device comprising: (a) preparing a semiconductor wafer; (b) forming a film containing a transition metal over the semiconductor wafer; (c) removing the film which is formed on a back surface or an edge region of a device surface of the semiconductor wafer; and (d) after step (c), performing a predetermined process to the semiconductor wafer, wherein the step (c) further comprises the following sub-steps: (c-1) supporting the edge of the semiconductor wafer with a plurality of pins which are disposed on a stage, under a condition in which a predetermined clearance is provided between the device surface of the semiconductor wafer and a surface of the stage and in which the device surface of the semiconductor wafer and the surface of the stage do not contact each other, (c-2) supplying a cleaning liquid to a back surface of the semiconductor wafer, while rotating the semiconductor wafer and the stage and supplying an inert gas to the device surface of the semiconductor wafer from the stage, and wherein, in the step (c-2), rotation speed of the stage is controlled to spread the cleaning liquid to the device surface of the semiconductor wafer.