Patent ID: 6616774
Filing Date: 2003-09-09
Classification: H01L,Y10S

Abstract:
A method for wafer cleaning comprising:arranging a plurality of wafers, each having two opposing sides and a top and a bottom face, and seating the wafers in grasping grooves on a band-shaped tray such that each of the two opposing sides of each wafer are grasped by respective grasping grooves; placing the band-shaped tray and arranged wafers into a cleaning tank having a bottom face generally conforming to a bottom-faced shape of a wafer; placing the band-shaped tray onto a guide fixing the tray at a predetermined position in the cleaning tank; flowing cleaning fluid at a flow rate from the bottom face of the cleaning tank over the bottom and top faces of each wafer; elevating the wafers slightly upward from the bottom face of the cleaning tank thereby exposing a portion of opposing sides of each wafer that were grasped in the grasping grooves to the cleaning fluid; returning each wafer back to a seated position in the grasping grooves; and removing the plurality of wafers from the cleaning tank.