Patent ID: 11952663
Assignee: APPLIED MATERIALS, INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A method of processing a semiconductor substrate, comprising flowing a precursor into a semiconductor processing chamber via a showerhead that is disposed above a substrate support on which the semiconductor substrate is positioned; simultaneously flowing a purge gas through a purge lumen defined by an exterior surface of the substrate support and a liner that is spaced apart from the substrate support; an inner surface of the liner comprises a protrusion that extends inward toward the exterior surface of the substrate support; a lateral distance between the exterior surface of the substrate support and the protrusion is between about 60 mils and 100 mils; and diverting the purge gas laterally outward using an edge ring that is positioned atop a peripheral edge of the substrate support and that extends laterally outward of a top end of the purge lumen such that the purge gas and the precursor diffuse with one another at a diffusion position that is radially outward of a bevel of the semiconductor substrate.