Patent ID: 7892405
Filing Date: 2011-02-22
Classification: C23C,H01J

Abstract:
1. A method of magnetron sputtering, the method comprising: forming a first separatrix to confine a first plasma, the first separatrix comprising a first null region through which ions may escape through; forming a second separatrix to confine the first separatrix, the second separatrix comprising a second null region through which ions may escape through; confining the second separatrix within a third separatrix, the third separatrix comprising a third null region through which ions may escape through; and depositing a thin film on a substrate with ions escaping through the first null region of the first separatrix and the second null region of the second separatrix; wherein ions escaping through the second null region of the second separatrix pass through the third null region of the third separatrix to deposit onto the substrate.