Patent ID: 8177992

Claim:
A method comprising: providing an apparatus comprising: a chamber; a substrate support disposed inside the chamber to support a substrate; a shield disposed above a center portion of the substrate, with a gap such that plasma is not generated between the shield and the center portion of the substrate, to expose an edge portion thereof, and for preventing plasma from being generated above the center portion of the substrate except at the edge portion; an antenna disposed at a position on an outer wall of the chamber; a bias power applying unit; a curtain gas passageway; a reaction gas supply passageway; and a gas injection nozzle; spraying a curtain gas to a space between the shield and the substrate, using the curtain gas passageway; spraying a reaction gas to an area between a side surface of the shield and an inner sidewall of the chamber, using the reaction gas supply passageway and the gas injection nozzle which are formed within the shield; applying plasma-generating power to an area between the edge portion of the substrate and an inner wall of the chamber, using the antenna; and applying bias to the substrate support, using the bias power applying unit.