Patent ID: 6348299
Filing Date: 2002-02-19
Classification: G03F

Abstract:
A method for forming a pattern of a photoresist which comprises:a) providing on a substrate a layer of a method which comprises at least one photosensitive polymer selected from the group consisting of: 1) polymer having pendant recurring groups selected from the group consisting of â€”COOâ€”CH2â€”CH(OH)â€”(CH2)xâ€”H, wherein x is 0-20; â€”COOâ€”CH2â€”CH(OH)â€”(CH2)yâ€”HEâ€”(CH2)zâ€”H; and mixtures thereof, wherein HE is O or S, and each y and z individually is 1-18; 2) a copolymer from i) at least one monomer selected from the group consisting of 2-hydroxyalkyl methacrylate, 2-hydroxyalkyl acrylate, and mixtures thereof wherein the alkyl has 1-10 carbon atoms; and ii) at least one monomer selected from the group consisting of alkylacrylate, alkylmethacrylate, and mixtures thereof wherein the alkyl has 1-10 carbon atoms, and wherein the amount of i) is about 75 to about 95 weight % and the amount of ii) is corresponding about 5 to about 25 weight % being based upon the total weight of i) and ii); and 3) mixtures of the above; and at least one compound selected from the group consisting of a tetraalkoxy titanate, a tetraalkoxy zirconate, a tetraalkoxy hafnate and mixtures thereof; b) imagewise exposing the layer of method to irradiation; and c) developing the photoresist to thereby form the pattern.