FRAME WITH NON-UNIFORM GAS FLOW CLEARANCE FOR IMPROVED CLEANING

摘要

The embodiments described herein generally relate to a frame for use in a plasma processing chamber to provide non-uniform gas flow flowing between the frame and sidewalls of the plasma processing chamber. In one embodiment, a frame includes a frame body having an inner wall and an outer wall defining a frame body, a center opening formed in the frame defined by the inner wall, and a corner region and a center region formed in a first side of the frame body. The corner region having a corner width that is smaller than a center width of the center region, wherein the widths are defined between the inner and outer walls.