Patent ID: 7520068

Claim:
A drying apparatus comprising: a drying chamber for supplying a drying material for drying a wafer, the drying chamber have at least a first slit and a second slit; and a vent unit for controlling a flow of the drying material to uniformly or substantially uniformly dry the wafer, the vent unit including, a first exhausting unit movable through the first slit, the first exhausting unit having a plurality of first vent holes for ventilating the drying chamber, and a second exhausting unit movable through the second slit, the second exhausting unit having a plurality of second vent holes for ventilating the drying chamber, the first exhausting unit and the second exhausting unit being movable into a first position separating the drying chamber into two chambers; wherein each of the first and second exhausting units further include a horizontal ventilation outlet, and wherein when the first and second exhausting units are in the first position, the drying gas is ventilated through the plurality of first vent holes and the plurality of second vent holes, and then the horizontal ventilation outlets.