Patent ID: 11859286
Assignee: KIOXIA CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 3:
4. A semiconductor manufacturing apparatus comprising:
a first gas feeder provided above a stage on which a substrate is to be placed and configured to feed a first gas to the substrate;
a first gas processor configured to supply high frequency power to the stage and render the first gas fed from the first gas feeder into plasma;
a second gas feeder provided above the stage and configured to feed a second gas more difficult to render into plasma than the first gas to an outer periphery of the first sas having been rendered into plasma; and
a controller configured to control an amount of feed of the second gas relative to an amount of feed of the first gas, wherein
the second gas contains a cleaning gas, the apparatus further comprising
a second gas processor provided on a gas passage on an upstream side of the second gas feeder and configured to process the cleaning gas with plasma.