Patent ID: 11864299
Assignee: APPLIED MATERIALS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A system for reducing charge on a workpiece, comprising:
a platen comprising a top surface having one or more openings;
one or more backside gas channels, each in communication with a respective opening on the top surface;
an ionizer, in communication with a backside gas supply to generate ionized gas;
a valving system having an outlet in communication with the one or more backside gas channels, a first inlet in communication with the backside gas supply and a second inlet in communication with an output of the ionizer; and
a controller, in communication with the valving system, to selectively allow a first amount of backside gas from the first inlet and a second amount of the ionized gas from the second inlet to pass to the outlet and into the one or more backside gas channels.