Patent ID: 7513954

Claim:
A plasma processing apparatus comprising: a processing container for receiving a substrate to be processed and processing the substrate by a plasma of a processing gas; a substrate mounting table for mounting the substrate thereon, the substrate mounting table being made of a ceramic; a gas supplying unit for supplying the processing gas into the processing container, a first electrode embedded inside the substrate mounting table; a heating unit embedded in the substrate mounting table and disposed under the first electrode; a high frequency power supply for supplying a high frequency power connected to the electrode; and one or more exposed second electrodes, wherein each of the second electrodes is installed in a hole of the substrate mounting table to be electrically directly connected to the first electrode through the hole and the second electrodes are exposed toward the outside of the substrate mounting table, wherein an annular ring for covering an edge of the substrate to be processed is disposed above the substrate mounting table, wherein one or more through holes are formed in the ring at positions corresponding to the second electrodes, a top surface of each of the second electrodes is lower than a top surface of the ring, and one or more countersinks are formed at lower parts of the through and wherein the second electrodes are exposed to the plasma in the processing container via the through holes.