Patent ID: 6733956
Filing Date: 2004-05-11
Classification: G11C,H01L

Abstract:
A method for making an opening in a layer of a first material of a semiconductor device, comprising the steps of:providing said layer of said first material; forming a layer of a second material over said layer of said first material, said second material being photoresist; removing a portion of said layer of said second material to form a photoresist mask over said layer of said first material; silylating said photoresist mask to form a top silylated portion and a sidewall silylated portion; forming a layer of a third material over said top silylated portion, over said sidewall silylated portion and over an exposed portion of said layer of said first material; removing a portion of said layer of said third material; removing said top and sidewall silylated portions; and removing a portion of said layer of said first material to form said opening.