Patent ID: 6505634
Filing Date: 2003-01-14
Classification: B08B,H01L,Y10S

Abstract:
A semiconductor wafer cleaning apparatus, comprising:a wafer feeding robot arm used for feeding a wafer from a wafer cassette while maintaining a horizontal, laid-down position of said wafer; a wafer boat seating a plurality of wafers received from said robot arm therein while maintaining the horizontal, laid-down position of the wafers; a boat drive unit vertically moving said wafer boat in opposite directions, and horizontally rotating the boat; and a wafer cleaning bath receiving the wafer boat vertically moved downward by the boat drive unit, with a plurality of liquid injection and discharge nozzles formed on a sidewall of said bath so as to inject a wafer cleaning liquid into the bath and discharge the liquid from the bath to an outside of the bath while forming a liquid current within said bath, whereby the wafers are washed and cleaned by the wafer cleaning liquid contained in the bath while being maintained in the horizontal, laid-down position and being rotated horizontally.