Patent ID: 8701268
Filing Date: 2014-04-22
Classification: B29C,B29K,B32B,C23C,H01J,H01L,H05K,Y10T

Abstract:
1. A method of joining components for a composite showerhead electrode assembly for a plasma processing apparatus, comprising: applying a first surface of a sheet of uncured elastomeric adhesive in a predetermined pattern to a bottom surface of a backing member in a predetermined pattern of bonding regions which exclude regions to remain unbonded, the backing member having a top surface and a plurality of first gas passages extending between the top surface and the bottom surface and having outlets in unbonded regions; applying a primer to the bottom surface of the backing member in a predetermined pattern; applying a top surface of an electrode to a second surface of the sheet of uncured elastomeric adhesive in a predetermined pattern of bonding regions, the electrode having a plasma exposed bottom surface and a plurality of second gas passages extending between the top surface and bottom surface of the electrode wherein the second gas passages have inlets in unbonded regions of the top surface of the electrode; applying a primer to the top surface of the electrode in a predetermined pattern; and bonding the top surface of the electrode to the bottom surface of the backing member with the sheet of elastomeric adhesive therebetween wherein the second gas passages are in fluid communication with the first gas passages.