Patent ID: 11923181
Assignee: ASM IP HOLDING B.V.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 9:
10. A substrate processing apparatus comprising:
a substrate supporting unit;
at least one ring surrounding the substrate supporting unit, wherein the at least one ring comprises an outer ring surrounding the substrate support unit and a flow control ring between the outer ring and the substrate supporting unit;
a processing unit on the substrate supporting unit; and
an exhaust unit connected to a reaction space between the substrate supporting unit and the processing unit,
wherein the reaction space is in communication with an exhaust space of the exhaust unit through a first channel between the exhaust unit and the at least one ring,
wherein the at least one ring is in surface-contact with the substrate supporting unit as the substrate supporting unit moves up, and moves up and down according to a vertical movement of the substrate supporting unit, and
wherein the flow control ring comprises:
a first portion overlapping at least a portion of the substrate supporting unit; and
a second portion extending from the first portion along the side of the substrate supporting unit, wherein the second portion has a surface that is inclined with respect to the substrate supporting unit; and
a third portion overlapping at least a portion of the outer ring from the second portion.