Patent ID: 6923192

Claim:
A substrate processing system comprising: a first substrate cleaner comprising: a. a forward portion including: (1) a rotatable substrate support; (2) a dispenser for applying fluid onto a substrate; and (3) a transmitter to be positioned closely spaced above the substrate to enable a meniscus of the fluid to be formed between the transmitter and the substrate, the transmitter being configured to cause particles on the substrate to be loosened in response to megasonic energy being applied to the transmitter; and b. a rear portion vertically thicker than the forward portion including: (1) a device for rotating the support; (2) at least one supply line for conducting fluid to the dispenser; (3) a drive module for moving the transmitter; and (4) connections for applying megasonic energy to the transmitter; and a second substrate cleaner including the elements set forth above as being included in the first substrate cleaner, the second substrate cleaner being stacked above the first substrate cleaner with the forward portions being vertically aligned and the rear portions being vertically aligned, and a space being formed between the forward portions to permit access to the forward portion of the first substrate cleaner and to permit ample gas flow into the area between the forward portions of the first and the second substrate cleaners.