Patent ID: 9567667
Date: 2017-02-14
CPC Classifications: C23C,H01J

Claim:
1. A physical vapor deposition apparatus comprising: a first sputter target comprising a first target material and coupled to a first high frequency (HF) power signal; a second sputter target coupled to a second HF power signal, wherein the first HF power signal and the second HF power signal are concurrently applied to said first sputter target and said second sputter target respectively; and a phase adjuster coupled to said first HF power signal and said second HF power signal and configured to adjust a phase difference between said first HF power signal and said second HF power signal, wherein said first HF power signal is generated by a first power supply, wherein said second HF power signal is generated by a second power supply, and wherein further said phase adjuster is configured to adjust said phase difference between said first HF power signal and said second HF power signal to a first predetermined value which is dependent on said first target material.