Patent ID: 6239038
Filing Date: 2001-05-29
Classification: H01L

Abstract:
A method for chemically processing a semiconductor wafer comprising the steps of:(a) inserting the wafer between an upper working surface and a lower working surface of an enclosed chamber;(b) supporting the wafer substantially parallel to the upper and lower working surfaces such that a narrow gap having a substantially uniform depth is created between substantially the entire area of at least one surface of the wafer and the corresponding area of the corresponding working surface; and(c) processing at least one surface of the wafer by(c1) injecting selected processing fluids into the enclosed chamber through at least one entry opening in either the upper working surface the lower working surface or both the upper and the lower working surfaces;(c2) forcing the selected processing fluids through the narrow gap and over the corresponding working surface of the wafer, and(c3) draining the selected processing fluids from the enclosed chamber through at least one drain in the chamber.