Patent ID: 9076828
Filing Date: 2015-07-07
Classification: F27D,H01L

Abstract:
1. An edge ring for supporting a substrate in a processing chamber, comprising: a ring shaped body having an inner edge, an outer edge, an upper side and a lower side, wherein the inner edge and outer edge are concentric about a central axis; a lip extending radially inward from the inner edge of the ring shaped body, wherein at least a portion of an upper surface of the lip is substantially parallel to a major plane that is perpendicular to the central axis; one or more surface area increasing structures extending from at least one of the upper side or lower side of the ring shaped body; and a positioner extending from the ring shaped body, wherein the one or more surface area increasing structures comprises a fin extending from the lower side of the ring shaped body, the fin forms a circular wall concentric to the inner edge and the outer edge, and the fin is positioned between the inner edge and the outer edge, the upper surface of the lip is below an upper surface of the ring shaped body so that the lip and body form a recess for holding the substrate, the fin is disposed at the inner edge of the ring shaped body, and the lip extends from the fin.