Patent ID: 8529701
Filing Date: 2013-09-10
Classification: C23C

Abstract:
1. A substrate processing apparatus comprising: a reaction tube comprising an inner tube and an outer tube; a manifold disposed under the outer tube, a top surface of the manifold being in air-tight contact with a bottom surface of the outer tube via a sealing member; a seal cap cover disposed under the manifold, a top surface of the seal cap cover being in air-tight contact with a bottom surface of the manifold via a sealing member; a seal cap covered by the seal cap cover, a top surface of the seal cap being in air-tight contact with a bottom surface of the seal cap cover via a sealing member; and at least one protrusion disposed at one of the bottom surface of the outer tube, the bottom surface of the manifold, the bottom surface of the seal cap cover and combinations thereof, wherein the protrusion at the bottom surface of the outer tube is disposed outside the sealing member between the top surface of the manifold and the bottom surface of the outer tube, the protrusion at the bottom surface of the manifold is disposed outside the sealing member between the top surface of the seal cap cover and the bottom surface of the manifold, and the protrusion at the bottom surface of seal cap cover is disposed outside the sealing member between the top surface of the seal cap and the bottom surface of the seal cap cover.