Patent ID: 6551446
Filing Date: 2003-04-22
Classification: H01J

Abstract:
A plasma reactor for processing a workpiece, said plasma reactor comprising:a vacuum enclosure, including a wall, defining a vacuum chamber, said vacuum chamber having a main chamber portion on one side of said wall and a plenum on another side of said wall, said plenum communicating with said chamber portion through at least one opening in said wall; a workpiece support within said main chamber portion and facing said wall; a gas distribution plate coupled to said wall, said wall separating said main chamber portion from the plenum, facing said workpiece support and coupled to a reactive process gas supply for injecting reactive process gases directly into a process region adjacent said workpiece support; a gas injection port at said plenum coupled to a diluent gas supply for injecting diluent gases into said plenum; and a first coil antenna adapted to accept RF power, inductively coupled to the interior of said plenum, and capable of maintaining a plasma in a reentrant path through the plenum and across the process region.