Patent ID: 10262834

Abstract:
A thermally and electrically conductive gasket of a gasket set configured to be mounted between a faceplate and backing plate of a showerhead electrode assembly includes an inner gasket configured to be mounted on an inner electrode of a showerhead electrode assembly. The inner gasket includes a plurality of concentric flat rings connected by a plurality of spokes. A first annular gasket surrounds and is concentric with the inner gasket and includes a flat annular ring having a plurality of cutouts. A second annular gasket surrounds and is concentric with the first annular gasket and includes a flat annular ring having a plurality of cutouts. A third annular gasket surrounds and is concentric with the second annular gasket and includes a flat annular ring having a plurality of cutouts. The gasket accommodates gas injection holes, alignment pin holes, an alignment ring groove, and/or threaded holes.