Patent ID: 11908664
Assignee: TOKYO ELECTRON LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 6:
7. A plasma processing apparatus comprising:
a plasma processing chamber;
a stage disposed in in the plasma processing chamber;
an electrode disposed in the stage;
a plurality of heaters disposed in the stage;
a high frequency power supply;
a conductive pipe electrically connected between the high frequency power supply and the electrode, the conductive pipe including an inner bore;
a heater controller;
a plurality of high frequency inflow prevention filters electrically connected between the plurality of heaters and the heater controller, respectively; and
a plurality of wirings, each wiring connecting at least one heater of the plurality of heaters and at least one high frequency inflow prevention filter of the plurality of high frequency inflow prevention filters through the inner bore of the conductive pipe;
wherein the stage further includes a conductive member disposed below the electrode,
the conductive member is electrically connected between the electrode and the conductive pipe,
a space is defined between the conductive member and the electrode,
the plurality of wirings connect the respective heaters and the respective high frequency inflow prevention filters through the space and the inner bore of the conductive pipe;

wherein the apparatus further comprises a matching unit for impedance matching, provided between the conductive pipe and the high frequency power supply, wherein the matching unit is provided at a lateral side of the conductive pipe;
wherein the conductive pipe includes a first pipe, a second pipe, and a third pipe,
the second pipe is connected to the conductive member,
the third pipe is connected to the high frequency power supply via the matching unit,
a first end portion of the first pipe is fitted into an inner bore of the third pipe, and
a second end portion of the first pipe is fitted into an inner bore of the second pipe.