Patent ID: 9129778
Filing Date: 2015-09-08
Classification: C23C,H01J

Abstract:
1. A fluid distribution member assembly for use in a substrate processing system, comprising: a fluid distribution member having a central portion and a perimeter portion, wherein the fluid distribution member is configured to (i) be arranged between a plasma generator assembly and a process chamber, separate from the plasma generator assembly, and (ii) receive plasma from the plasma generator assembly for distribution through the fluid distribution member into the process chamber, wherein the fluid distribution member includes a first slot formed there-through between the central portion and the perimeter portion, and wherein the first slot extends along a curved path, wherein the curved path spirals relative to a fixed point on the fluid distribution member at a continuously increasing or continuously decreasing distance from the fixed point, wherein the first slot comprises i) a beginning point within ⅔ of a radius of the fluid distribution member, the radius corresponding to a measurement from a fixed center point of the fluid distribution member to an outer perimeter of the fluid distribution member, and ii) an end point, wherein the beginning point and the end point define the curved path, and wherein a length of the first slot from the beginning point to the end point is such that the first slot completely circumscribes the fixed point at least one time, and wherein the curved path of the first slot allows for thermal expansion of the fluid distribution member such that the central portion of the fluid distribution member is configured to expand and rotate with respect to the perimeter portion of the fluid distribution member when the fluid distribution member is heated and to contract and rotate in an opposite direction when the fluid distribution member cools.