Patent ID: 9281166
Filing Date: 2016-03-08
CPC Classification: H01J,H01L

Claim Text:
1. A chamber for processing a bevel edge of a substrate, comprising: a bottom electrode defined to support a substrate in the chamber, the bottom electrode having a bottom first level for supporting the substrate and a bottom second level near an outer edge of bottom electrode, the bottom second level defined at a step below the bottom first level; a top electrode oriented above the bottom electrode, the top electrode having a top first level and a top second level, the top first level being opposite the bottom first level and the top second level being opposite the bottom second level, the top second level defined at a step above the top first level; a bottom grounded electrode disposed around the bottom electrode at the bottom second level; a top grounded electrode disposed around the top electrode at the top second level; a bottom ring mount oriented at the bottom second level, the bottom ring mount supporting a bottom permanent magnet; and a top ring mount oriented at the top second level, the top ring mount supporting a top permanent magnet, the top permanent magnet being oriented opposite the bottom permanent magnet.