Patent ID: 8864936

Claim:
An apparatus for processing a substrate, comprising: a chamber providing a reaction space; a stage installed in the chamber; a plasma shielding unit installed opposite to the stage in the chamber; a support unit for supporting a substrate between the stage and the plasma shielding unit; a first supply pipe provided at the stage to supply a reaction or non-reaction gas to one surface of the substrate; and second and third supply pipes provided at the plasma shielding unit, the second supply pipe supplying a reaction gas to the other surface of the substrate, the third supply pipe supplying a non-reaction gas to the other surface, wherein the support unit comprises an arm portion configured to expand and contract in the chamber; and a support portion bent inwardly at an end of the arm portion to support an edge region of the substrate on a top surface thereof, wherein the support portion is configured to be in a floating state spaced apart from the stage not to electrically interfere with other components, and wherein a bent portion of the support portion is inclined.