Patent ID: 6908512

Claim:
A temperature-controlled substrate holder for holding a substrate in an apparatus for processing in a fluid, said apparatus having a sealable working chamber for said fluid, means for the supply of at least one fluid to said sealable working chamber, and means for controlling pressure in said sealable working chamber, said temperature-controlled substrate holder comprising: a substrate holder body located in said sealable working chamber, said holder having an upwardly facing flat surface, said substrate having a diameter, said upwardly facing flat surface having a recess with a diameter smaller than said diameter of said substrate, said upwardly facing flat surface being intended for supporting said substrate during said processing in a position, in which said substrate closes said recess; and means for the supply of a heating/cooling medium to said recess comprising storage means for said heating/cooling medium, a heater, a cooler, and means for selectively switching the path of said heating/cooling medium from said storage means to said recess through said heater or said cooler.