Patent ID: 7000623

Claim:
A system for rinsing and drying a substrate, comprising: (a) a chuck having fingers for edge gripping the substrate, the chuck being configured to rotate the substrate; (b) an upper dispense arm positioned over an active surface of the substrate, the upper dispense arm being capable of moving between a center region and a periphery of the active surface of the substrate, the upper dispense arm further having a pair of supply lines for delivering fluids over the active surface of the substrate; (c) a lower dispense arm positioned below a backside surface of the substrate and being magnetically coupled to the upper dispense arm with a governor to limit a range of movement of the lower dispense arm, the lower dispense arm being capable of moving between a center region and a periphery of the backside surface of the substrate, and having a pair of supply lines for delivering fluids over the backside surface of the substrate; and (d) a spray shield surrounding the substrate in the chuck, the spray shield having a section of the spray shield slideably configured to provide access to the chuck and to form a substantially solid spray shield surrounding the chuck, wherein when the upper dispense arm and the lower dispense arm move between the center region and the periphery of the substrate, a magnetic coupling provides that the upper dispense arm and the lower dispense arm remain aligned on opposite surfaces of the substrate, and the governor limits the movement of the lower dispense arm prior to a cessation of movement by the upper dispense arm.