Patent ID: 8056503

Claim:
A plasma processing apparatus comprising: a processing chamber configured to accommodate a substrate to be processed and performing a plasma processing thereon; a susceptor installed inside the processing chamber to mount the substrate thereon, the susceptor serving as an electrode and including an upper plate, an intermediate plate and a lower plate; a first path formed inside the susceptor to circulate a coolant therethrough, the first path including a coolant inlet line, a coolant exhaust line extending vertically to exhaust the coolant, and a coolant circulating line connected to the coolant inlet line and the coolant exhaust line, the coolant inlet line introducing the coolant into the coolant circulating line; and a second path, formed inside the susceptor, including a gas inlet portion configured to supply a cooling gas from a bottom of the susceptor, a gas storage being connected to the gas inlet portion and being configured to store the cooling gas, fine grooves formed on a mounting surface of the susceptor, and gas supply fine holes to supply the cooling gas from the gas storage to the fine grooves, wherein a temperature of the susceptor is controlled by circulating the coolant through the coolant circulating line and a temperature of the substrate to be processed is controlled by supplying the cooling gas from the gas storage to a backside of the substrate mounted on the susceptor through the gas supply fine holes, and the gas storage is formed under the coolant circulating line, and the coolant circulating line is formed by blocking an opening of a groove formed in a top surface of the intermediate plate by the upper plate.