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

Claim 11:
12. A semiconductor processing apparatus, comprising:
a reaction chamber and a reaction chamber exhaust port, the reaction chamber exhaust port configured to remove vapors from the reaction chamber;
a showerhead device connected to the reaction chamber and configured to deliver reactant vapors to the reaction chamber, the showerhead device comprising:
a gas inlet configured to supply the reactant vapors into the showerhead device;
a first showerhead plate in fluid communication with the gas inlet, the first showerhead plate comprising a plurality of openings; and
a second showerhead plate comprising:
a plurality of inlet ports in fluid communication with the plurality of openings, the plurality of inlet ports configured to deliver the reactant vapors to the reaction chamber; and
a plurality of outlet apertures configured to remove vapors from the reaction chamber;

a plurality of pumps connected to the reaction chamber exhaust port and the plurality of outlet apertures, the plurality of pumps configured to remove vapors from the reaction chamber through the reaction chamber exhaust port and the plurality of outlet apertures at a plurality of pumping speeds, the plurality of pumps configured to modulate the plurality of pumping speeds; 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%.