Patent ID: 7364623
Filing Date: 2008-04-29
Classification: C23F,H01J,H01L,Y10S

Abstract:
1. A confinement assembly for a semiconductor processing chamber, comprising: a plurality of confinement rings disposed over each other, each of the plurality of confinement rings separated by a space, each of the plurality of confinement rings having a plurality of holes defined therein; a plunger extending through aligned holes of corresponding confinement rings, the plunger moveable in a plane substantially orthogonal to the confinement rings, and a proportional adjustment support affixed to the plunger, the proportional adjustment support configured to support the confinement rings, such that as the plunger moves in the plane the space separating each of the plurality of confinement rings is proportionally adjusted, wherein the proportional adjustment support includes a bellows sleeve having a number of protrusions, the protrusions having a diameter greater than a diameter of the plurality of holes defined through each of the plurality of confinement rings, wherein the plunger and the sleeve are disposed through each of the plurality of holes.