Patent ID: 8491751

Claim:
A plasma processing apparatus, comprising: an etching processing apparatus including an etching gas supply unit for supplying an etching gas to an etching processing chamber, a first exhaust unit for lowering pressure in the etching processing chamber, an etching mounting stage for mounting an objective item to be processed in the etching processing chamber, a first mounting unit for mounting the objective item to be processed and arranged on the top of the etching mounting stage, and an etching plasma generating unit for generating plasma in the etching processing chamber; an ashing processing apparatus including an ashing gas supply unit for supplying an ashing gas to an ashing processing chamber, a second exhaust unit for lowering pressure in the ashing processing chamber, an ashing mounting stage for mounting the objective item to be processed in the ashing processing chamber, a second mounting unit for mounting the objective item to be processed and arranged on the top of the ashing mounting stage, and an ashing plasma generating unit for generating plasma in the ashing processing chamber; and a transport unit for mounting and unmounting the objective item to the etching mounting stage and the ashing mounting stage for which processing is finished, wherein: each of the first mounting unit and the second mounting unit has a top flat surface; a diameter of the top flat surface of the second mounting unit is less than a diameter of the top flat surface of the first mounting unit; and when the diameter of the top flat surface of the first mounting unit is a, a maximum deviation of a mounting position is a when the objective item is mounted to the etching mounting stage by the transport unit, the diameter of the top flat surface of the second mounting unit is b, a maximum deviation of a mounting position is β when the objective item is mounted to the ashing mounting stage by the transport unit, and a distance required between the second mounting unit and deposited substance on a periphery of a rear surface of the objective item is γ, the plasma processing apparatus holds b≦a−(α+β+γ)×2.