Combiner and distributor for adjusting impedances or power across multiple plasma processing stations
US11258421B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2020 |
| Grant date | Feb 22, 2022 |
| Priority date | — |
| Expiry date | Apr 26, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C16/52
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Systems and methods for adjusting impedances or power or a combination thereof across multiple plasma processing stations are described. One of the systems includes a first radio frequency (RF) generator that generates a first RF signal having a first frequency, a second RF generator that generates a second RF signal having a second frequency, and a first matching network coupled to the first RF generator to receive the first RF signal. The first impedance matching network outputs a first modified RF signal upon receiving the first RF signal. The system further includes a second matching network coupled to the second RF generator to receive the second RF signal. The second matching network outputs a second modified RF signal upon receiving the second RF signal. The system further includes a combiner and distributor coupled to an output of the first matching network and an output of the second matching network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.