Patent ID: 11335550

Abstract:
Provided are an apparatus and a method which ensure the wafers immersing in the chemical solution from one cleaning tank to the other cleaning tanks. The apparatus includes an inner tank (1001); at least one divider (1002) for dividing the inner tank (1001) into at least two cleaning tanks filled with chemical solution; a first robot (1005) equipped with at least a pair of end effectors (1051) for gripping and taking a wafer from a first cleaning tank (1011) to a second cleaning tank (1012); wherein each cleaning tank is provided with a cassette bracket (1003) in the bottom for holding wafers, and the at least one divider (1002) is provided with at least one slot (1004)< wherein the first robot (1005) grips and takes the wafer from the first cleaning tank (1011) to the second cleaning tank (1012) through the slot (1004) while keeping the wafer immersing.