Patent ID: 11866823
Assignee: ASM IP HOLDING B.V.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 0:
1. A substrate processing device having a substrate supporting unit configured to accommodate a substrate, the substrate supporting unit comprising:
a base;
a first protrusion protruding from the base to a first height, the first protrusion defining, in part, a recess within the substrate supporting unit; and
a second protrusion within the recess and protruding from the base to a second height less than the first height,
wherein the first protrusion comprises a contact surface to receive an edge of a substrate and a sealing surface configured to contact a reactor wall,
wherein the contact surface defines a top of the recess,
wherein the substrate is received above the recess,
wherein a height of the contact surface is greater than the second height, and
wherein the first protrusion surrounds the second protrusion.