Patent ID: 8968485
Filing Date: 2015-03-03
Classification: B08B,H01L

Abstract:
1. An apparatus for processing a substrate, comprising: a process chamber having a track; a carrier connected to the track for moving the substrate along a path; upper and lower proximity heads defined in the process chamber and positioned along the path, the upper and lower proximity heads having opposing faces that define a gap in which a meniscus of fluid is formed when in operation, the path for the carrier being defined along the gap between the opposing faces, the upper and lower proximity heads having a length that extends up to at least a diameter of the substrate; a first pre-wet dispenser and a second pre-wet dispenser disposed along side of the upper proximity head, the first and second pre-wet dispensers directed toward the path; a drive for moving each of the first and second pre-wet dispensers between a center position along the length of the upper proximity head and opposite outer positions defined near outer ends of the upper proximity head; and a pre-wet controller for causing the drive to move each of the first and second pre-wet dispensers based on a position of the carrier when moved under the first and second pre-wet dispensers.