Patent ID: 6792959
Filing Date: 2004-09-21
Classification: H01L,Y10S

Abstract:
A single wafer type substrate cleaning apparatus for cleaning wafers, individually, which are not stored in a cassette, in a sealed cleaning housing, said apparatus comprising:wafer rotary means for supporting and rotating each wafer in the cleaning housing in the horizontal position; a cleaning chamber provided at the outer peripheral portion of the wafer rotary means for forming a cleaning treatment space for cleaning the wafer which is rotatably supported by the wafer rotary means; and chemical fluid supply means for supplying chemical fluids to the front and back faces of the wafer which is rotatably supported by the wafer rotary means, said chemical fluid supply means being provided in the cleaning housing and comprising upper side supply nozzles for supplying chemical fluids to the front face of the wafer from the upper side thereof, and lower side supply nozzles for supplying chemical fluids to the back face of the wafer from the lower side thereof; wherein the upper and lower side supply nozzles vertically and sequentially supply a plurality of chemical fluids to the front and back faces of the wafer which is rotatably supported by the wafer rotary means, thereby cleaning the wafer, and purified water is always forced to flow out of the lower side supply nozzles when chemical fluids are not supplied therefrom in the series of cleaning treatments.