Patent ID: 8147618

Claim:
A device for liquid treatment of a disc-like article, comprising: a spin chuck for holding and rotating a disc-like article; dispensing means for dispensing liquid onto the disc-like article; liquid collecting means for collecting the liquid, which is flung off the disc-like article when the disc-like article is rotated; a plate arranged parallel to the disc-like article and facing the disc-like article when the disc-like article is held by the spin chuck; and gas-guide means for directing gas parallel to the plate across the plate from one circumferential edge of the plate to another circumferential edge of the plate, wherein the gas-guide means comprises an exhaust for collecting the gas and a gas source for providing the gas, the exhaust and gas source being arrange opposite to each other with respect to a symmetrical plane, which is perpendicular to a plane of the disc-like article when the disc-like article is rotated, and wherein the exhaust comprises an exhaust chamber having a shape of a first section of a ring chamber and the gas source comprises a gas source chamber having a shape of a second section of the ring chamber.