Patent ID: 8739805

Claim:
An apparatus for processing a substrate, comprising: a carrier for the substrate that transports the substrate through a chamber; and a head, further including a first section that suctions liquid from the upper surface of the substrate as the substrate moves under the head, a second section, contiguous to the first section, that is configured to flow a film of cleaning foam onto the upper surface of the substrate as the substrate proceeds under the head, wherein the second section includes one or more input channels for delivering the film of cleaning foam and one or more output channels for removing the film of cleaning foam and wherein a group of the input channels are located below a horizontal triangular reservoir fed by a main passage above an intersection of the other two sides of the triangular reservoir; and a third section, contiguous to the second section, that is configured to flow a film of rinsing fluid onto the upper surface of the substrate as the substrate is carried under the head, wherein the third section is defined partially around the second section and up to the first section and wherein the third section and the first section create a confinement of the cleaning foam with respect to the chamber.