Patent ID: 8968537
Filing Date: 2015-03-03
Classification: C22C,C23C,H01J

Abstract:
1. A sputtering target, comprising: a backing plate having a front side opposed to a back side, wherein the front side contains an outer support surface having a plurality of fastener holes disposed therein, the outer support surface encompassing an inner target surface, the back side contains an outer back surface encompassing an inner recessed surface at a center of the backside, and the outer back surface has a target recess depth along a central axis of the backing plate and between parallel planes extending across the inner recessed surface and the outer back surface; a target layer comprising at least one metal disposed on the inner target surface of the backing plate, wherein the inner recessed surface has a depth and a diameter, and the target layer extends outwardly from the central axis to a diameter that is less than the diameter of the inner recessed surface, the depth of said inner recessed surface being constant across the diameter of the inner recessed surface; and a protective coating layer comprising nickel or tungsten disposed on at least a portion of the outer support surface, a portion of an outer surface of the protective coating layer being substantially coplanar with a plane of the outer support surface.