Patent ID: 8431996
Filing Date: 2013-04-30
Classification: C23C,H01J,H01L,Y02E,Y02P

Abstract:
1. A plasma processing apparatus comprising: (a) a vacuum vessel, (b) a plasma generating electrode provided inside the vacuum vessel, (c) a substrate holding mechanism for holding a substrate positioned to face the plasma generating electrode with a gap kept against the plasma generating electrode inside the vacuum vessel, (d) a gas exhaust device connected with the vacuum vessel, which opens in a gas exhaust chamber formed between the plasma generating electrode and the inner wall surface of the vacuum vessel inside the vacuum vessel, in order to keep the pressure in the vacuum vessel at a reduced pressure, (e) a power supply connected with the plasma generating electrode, for supplying power to the plasma generating electrode, and (f) a gas introduction pipe connected with the vacuum vessel, for introducing source gas for plasma processing, into the inside of the vacuum vessel, wherein (g) the plasma generating electrode has multiple gas exhaust holes extending from the surface of the plasma generating electrode on the side facing the substrate, through the plasma generating electrode, to reach the gas exhaust chamber, in the state where the substrate is held on the substrate holding mechanism, (h) gas supply pipes connected with the gas introduction pipe have gas supply ports for discharging the source gas toward the insides of the multiple gas exhaust holes, and (i) the gas supply pipes and the gas supply ports are disposed in such a manner that the extension lines in the flow directions of the source gas discharged from the gas supply ports may intersect end face opening regions at the boundary plane between the gas exhaust holes and the gas exhaust chamber.