Patent ID: 6598312
Filing Date: 2003-07-29
Classification: H01L,Y10S

Abstract:
A wafer drying apparatus comprising:a washing tank for storing pure water; a dry room positioned at an upper portion of the washing tank; a hood positioned above the dry room at an upper portion of the washing tank, the hood having a plurality of distributing pipes formed at a bottom surface thereof; an injection nozzle positioned in the hood for ejecting isopropyl alcohol into the hood; a storage tank for storing the isopropyl alcohol; a bubble maker in the storage tank to create isopropyl alcohol vapor; a nitrogen supplier for storing a carrier gas for transferring the isopropyl alcohol vapor in the storage tank to the hood; and a heater provided near the injection nozzle in the hood to heat the isopropyl alcohol vapor that is ejected through the injection nozzle to a predetermined temperature, thereby uniformly diffusing the isopropyl alcohol vapor through the disturbing pipes, and to heat the wafer in the dry room prior to injection of the isopropyl alcohol vapor.