Patent ID: 6261635
Filing Date: 2001-07-17
Classification: B05C,G03F,H01L

Abstract:
A method for applying a liquid to a microelectronic substrate having a first surface and a second surface facing opposite the first surface, comprising:supporting the substrate by engaging less than the entire second surface of the microelectronic substrate;disposing the liquid on the first surface of the microelectronic substrate;rotating the support and the microelectronic substrate about a rotation axis at a first rate to distribute the liquid over the first surface of the microelectronic substrate; andseparating a rotating first volume of gas adjacent the first surface of the microelectronic substrate from a generally stationary second volume of gas proximate to the first volume of gas by positioning a barrier between the first and second volumes so that the barrier cover the first surface of the microelectronic substrate, and rotating the barrier at a second rate approximately equal to the first rate, where the rotation of the barrier is restricted relative to rotation of a barrier support positioned beneath the microelectronic substrate.