Electrostatic chuck
Abstract:
An electrostatic chuck includes a base plate, a first heater element, and a plurality of first power feeding terminals. The base plate includes a communicating path having a spiral shape. The first heater element includes a plurality of first zones. The plurality of first power feeding terminals feeds power to the plurality of first zones. Each of the plurality of first zones includes a first heater line and a pair of first power feeding portions feeding power to the first heater line. The pair of first power feeding portions is electrically connected to the plurality of first power feeding terminals. The plurality of first power feeding terminals includes a first and a second annular portion. The communicating path includes a first circumferential portion surrounding the second annular portion between the first annular portion and the second annular portion when viewed along a stacking direction.
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