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

Claim 0:
1. A substrate processing apparatus comprising:
a substrate supporting unit;
an outer ring surrounding the substrate supporting unit;
a flow control ring between the substrate supporting unit and the outer ring, wherein the flow control ring comprises a first portion overlapping at least a portion of the outer ring, and a second portion extending from the first portion along the side of 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 a first gas in the reaction space is transmitted to the exhaust unit through a first channel,
a second gas in a lower space below the substrate supporting unit is transmitted to the exhaust unit through a second channel, and
the first channel and the second channel are separated by the flow control ring,
wherein the substrate supporting unit is configured to be vertically movable, and
wherein the flow control ring is self-aligned while sliding with respect to the outer ring by a pushing force of the substrate supporting unit as the substrate supporting unit moves up.