| 摘要 |
<p>A sputtering system (50) using an AC power supply (59) in the range of 10 kHz to 100 kHz uses two rotatable cylindrical magnetrons (60, 62). The rotatable cylindrical magnetrons (60, 62), when used for depositing a dielectric layer onto a substrate (80), clean off dielectric material that is deposited onto the target (64, 65). This prevents a dielectric layer on the target (64, 65) from acting like a capacitor and may help avoid arcing. Additionally, an impedance-limiting capacitor (58) can be placed in series in the electrical path between the targets (64, 65) through the transformer (54) so as to reduce arcing. This impedance-limiting capacitor (58) has a value much larger than the capacitor used to couple the power supply (59) to a target (64, 65) in radio frequency sputtering systems.</p> |
