Patent ID: 11965262
Assignee: ASM IP HOLDING B.V.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 0:
1. A thin film deposition apparatus comprising a substrate supporting plate,
wherein the substrate supporting plate comprises:
a substrate mounting portion configured to support a target substrate mounted thereon, the substrate mounting portion comprising a first top surface sized to accommodate the target substrate,
a peripheral portion surrounding the substrate mounting portion,

wherein the first top surface of the substrate mounting portion includes a non-anodized central portion and an edge portion surrounding the non-anodized central portion,
wherein the non-anodized central portion exposes a metallic surface configured to face the target substrate,
wherein the edge portion of the first top surface forms an anodized edge portion,
wherein the anodized edge portion of the first top surface is configured to overlap the target substrate when the target substrate is placed over the substrate mounting portion so that the substrate supporting plate makes a contact with the target substrate due to an electrostatic force produced between the substrate mounting portion and the target substrate, and
wherein the metallic surface exists as the non-anodized central portion of the first top surface and an insulating layer is formed on the edge portion of the first top surface and is not formed on the central portion of the top surface to allow the target substrate to be detached after a process ends.