Patent ID: 8888950
Filing Date: 2014-11-18
Classification: H01J,H01L

Abstract:
1. An apparatus for plasma processing, comprising: a first electrode unit configured to inject a first gas; a substrate supporter spaced apart from the first electrode unit for supporting a substrate; and a second electrode unit spaced apart from the substrate supporter to be arranged at a backside of the substrate, the second electrode unit configured to inject a second gas to form plasma between the second electrode unit and the substrate supported on the substrate supporter; a plurality of discharging nozzles formed in the second electrode unit to inject the second gas toward the backside of the substrate; an insulating ring formed along a peripheral portion of the second electrode unit to concentrate plasma formed between the second electrode unit and the substrate; a discharging member integrally formed with the second electrode unit at the peripheral portion of the second electrode unit and extending toward the first electrode to inject a third gas toward a center portion of the second electrode unit or a center of the substrate and to confine the second gas; wherein the substrate supporter comprises: one or more arms configured to receive the substrate; and a supporting part extending from the arm toward a substrate seating position of the substrate; wherein the supporting part comprises: wherein the discharging member has a bent shape, wherein a top portion of the discharging member is angled toward the center portion of the second electrode unit to cause the third gas to be injected toward the center portion of the second electrode unit.