Patent ID: 11926893
Assignee: KOKUSAI ELECTRIC CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 0:
1. A substrate processing apparatus comprising:
a process vessel in which a substrate is processed; and
a substrate support provided in the process vessel and comprising a plurality of supports where the substrate is placed,
wherein the process vessel comprises a process region where a process gas is supplied to the substrate and a purge region where the process gas above the substrate is purged, and a ceiling of the purge region is located below a ceiling of the process region,
wherein the purge region comprises a first region to which a first exhaust pump is connected and whose inner atmosphere is exhausted at a first pressure and a second region to which a second exhaust pump is connected and whose inner atmosphere is exhausted at a second pressure, and
wherein the ceiling of the purge region comprises a first ceiling portion provided at the first region to face the substrate support and a second ceiling portion provided at the second region to be adjacent to the first ceiling portion.