Patent ID: 6218090
Filing Date: 2001-04-17
Classification: G03F,H01L,Y10S

Abstract:
A process for forming a photoresist image on a substrate which comprises:a) depositing a photoresist onto a layer of a substrate;b) imagewise exposing the photoresist to radiation and developing said photoresist to form at least one photoresist feature and thereby revealing portions of the layer;c) etching away the revealed portions of the layer;d) overall exposing the substrate, the at least one photoresist feature and remaining layer portions to sufficient electron beam radiation to render a part of the photoresist feature directly adjacent to the remaining layer portions more soluble in a developer than a balance of the photoresist feature; ande) partially developing the more soluble part of the photoresist feature to thereby expand the feature to form notches in the photoresist feature directly adjacent to the remaining layer portions.