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Post etch clean sequence for making a semiconductor device

Image Number 3 for United States Patent #6465358.

An improved method of forming a semiconductor device is described. The method comprises forming a dielectric layer on a substrate, forming a photoresist layer on the dielectric layer, then patterning the photoresist layer to define a region to be etched. After forming an etched region within the dielectric layer, the photoresist layer is removed and the etched region is cleaned. The etched region is cleaned by applying a buffered oxide etch dip, followed by an amine based dip.

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