Patent ID: 11946142
Assignee: LAM RESEARCH CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC C  H | IPC C

Claim 0:
1. A showerhead pedestal (ShoPed) for use in a plasma processing chamber for depositing films on an underside surface of a wafer, comprising:
a first zone disposed in the ShoPed;
a second zone disposed in the ShoPed;
an upper separator fin disposed over a top surface of the ShoPed; and
a lower separator fin disposed under the top surface of the ShoPed and aligned with the upper separator fin;
wherein the first zone is configured for depositing a first film on the underside surface of the wafer, the second zone is configured for depositing a second film on the underside surface of the wafer, and
wherein the upper separator fin and the lower separator fin define separation boundaries between the first film and the second film.