Patent ID: 7141763

Claim:
An apparatus for controlling a temperature of a substrate, the substrate having a lower surface and an upper surface on which a substrate processing is performed, the apparatus comprising: a substrate table having a thermal surface supporting the substrate lower surface; a first thermal assembly arranged in the substrate table and comprising a plurality of thermoelectric modules, each of the plurality of thermoelectric modules having a thermoelectric surface such that the plurality of thermoelectric modules defines a plurality of thermoelectric surfaces, wherein: the plurality of thermoelectric surfaces is in thermal communication with the thermal surface and includes various shapes of thermoelectric surfaces, the plurality of thermoelectric surfaces is configured to substantially completely underlie the thermal surfaces, at least two thermoelectric modules of the plurality of thermoelectric modules are arranged such that a space is defined between them, one or more elements selected from a group consisting of wires for the thermoelectric modules, gas lines, and pins configured to place and remove the substrate is placed in the space between the thermoelectric modules; a second thermal assembly in thermal communication with the thermal surface, wherein the second thermal assembly comprises a channel that carries a heat-transfer fluid; a temperature sensor constructed and arranged to detect a temperature on the thermal surface; and a control unit that adjusts a power supplied to at least one of the plurality of thermoelectric modules on the basis of the temperature detected on the thermal surface.