Patent ID: 11948813
Assignee: ASM IP HOLDING B.V.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 14:
15. A semiconductor processing apparatus, comprising:
a reaction chamber;
a reaction chamber exhaust port configured to remove vapors from the reaction chamber;
a showerhead device comprising:
a plurality of distributed inlet apertures in fluid communication with a reaction vapor source and the reaction chamber;
a plurality of pumps; and
a plurality of distributed exhaust apertures in fluid communication with the plurality of pumps and the reaction chamber; and

a control system configured to deliver an etch reactant from an etch reactant source to the reaction chamber,
wherein the control system is configured to at least one of:
deliver the etch reactant to a substrate conformally such that etch conformality is greater than 50%, or
deliver the etch reactant to a substrate selectively such that the etch selectivity is greater than 10%.