Patent ID: 11967503
Assignee: WONIK IPS CO., LTD
Field: Surface technology, coating (Chemistry)
Classification: CPC H  C | IPC H

Claim 0:
1. A thin film deposition method using a substrate processing apparatus including a chamber that defines a processing space therein, a substrate support that is located in a lower area of the chamber and on which a substrate is mounted, a gas supply unit that is located in an upper area of the chamber and provides source gas and reactive gas to the substrate, and a power supply unit that supplies high-frequency power and low-frequency power to the chamber, the thin film deposition method comprising:
depositing a lower thin film under a low temperature range on the substrate;
depositing, on the lower thin film, an upper thin film having etching selectivity relative to the lower thin film at the low temperature range;
performing a plasma treatment of the upper thin film, thereby forming a hard mask including the lower thin film and the upper thin film with the plasma treatment; and
treating a surface of the upper thin film in the plasma atmosphere under the low temperature range after depositing the upper thin film, by supplying only the reactive gas;
wherein the low temperature range is 100° C. to 250° C.