Patent ID: 7544624
Filing Date: 2009-06-09
Classification: H01L

Abstract:
1. A method of processing a microfeature workpiece, comprising: positioning a microfeature workpiece in a processing chamber; directing a processing fluid toward a diffuser plate in the chamber; and obstructing bubbles from passing through passageways in the diffuser plate before the processing fluid contacts the microfeature workpiece, wherein obstructing bubbles from passing through passageways in the diffuser plate comprises flowing the processing fluid through the passageways in the diffuser plate, the individual passageways being aligned with at least a portion of the workpiece, and wherein each passageway includes a raised feature projecting upstream in the flow of processing fluid relative to a first side of the plate and an inlet orifice at an upstream end of the raised feature to prevent bubbles from entering the corresponding passageway.