Patent ID: 11952664
Assignee: KOKUSAI ELECTRIC CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC C  H | IPC C  H

Claim 15:
16. A substrate processing apparatus comprising:
a reaction tube having a process chamber where a substrate is processed;
a buffer chamber provided along a side of the reaction tube and configured to house a nozzle, communicate with the process chamber, and supply a process gas to the process chamber;
a cylindrical manifold connected to a lower end of the reaction tube and connected to the nozzle at a port provided on a side wall of the manifold; and
a shielding portion detachably provided in the reaction tube adjacent to the buffer chamber, comprising a plate and a support portion that supports the plate, and configured to restrict the communication between the buffer chamber and the process chamber under the substrate,
wherein the support portion comprises a back plate, both side plates formed continuously at both ends of the back plate, and a bottom plate.