Patent ID: 6780736
Filing Date: 2004-08-24
Classification: H01L

Abstract:
A method for image reversal in semiconductor processing, the method comprising:forming a first implant mask layer upon a semiconductor substrate, wherein said first implant mask layer comprises a silicon antireflective coating layer; forming a patterned photoresist layer over said first implant mask layer; removing portions of said first implant mask layer not covered by said patterned photoresist layer so as to expose non-patterned portions of said substrate; removing said photoresist layer; forming a second implant mask layer over said non-patterned portions of said substrate, wherein said first implant mask layer has an etch selectivity with respect to said second implant mask layer; and removing the remaining portions of said first implant mask layer to expose a reverse image of said substrate, comprising initially patterned portions of said substrate.