Patent ID: 6087068
Filing Date: 2000-07-11
Classification: G03F

Abstract:
A resist material for photolithographic patterning which is an integral layered body comprising:(a) a substrate;(b) an undercoating layer formed on one of the surfaces of the substrate from an undercoating composition which comprises, as a uniform solution in an organic solvent:(A) an ultraviolet absorber selected from the group consisting of(A1) a benzophenone compound having at least one amino group or an alkyl-substituted amino group represented by the general formula ##STR6## in which the subscripts m and n are, each independently from the other, 1 or 2 and R.sup.1 and R.sup.2 denote, each independently from the other, an amino group, alkyl-substituted amino group or hydroxyl group, at least one of the groups denoted by R.sup.1 and R.sup.2 in a molecule being an amino group or alkyl-substituted amino group;(A2) an aromatic azomethine compound represented by the general formulaA.sup.1 --CH.dbd.N--A.sup.2,in which A.sup.1 and A.sup.2 denote, each independently from the other, an aryl group having a substituent selected from the group consisting of an amino group, alkyl-substituted amino group, hydroxyl group, nitro group, halogen atom, alkyl group and alkoxy group, at least either one of A.sup.1 and A.sup.2 in a molecule being an aryl group substituted by an amino group or alkyl-substituted amino group; and(A3) an aromatic azomethine compound in the form of a diester of phthalic or terephthalic acid represented by the general formula ##STR7## in which the groups denoted by R.sup.3 and R.sup.4 are each, independently from the others, a substituent selected from the group consisting of amino group, alkyl-substituted amino group, hydroxyl group, nitro group, halogen atom, alkyl group and alkoxy group, at least one of the substituents R.sup.3 and R.sup.4 being an unsubstituted or alkyl-substituted amino group, and each of the divalent groups denoted by X is an azomethine linkage of the formula --CH.dbd.N-- or --N.dbd.CH--; and(B) a crosslinking agent which is a nitrogen-containing organic compound having at least two groups selected from the group consisting of hydroxyalkyl groups and alkoxyalkyl groups in a molecule,in a weight proportion of the component (A) to the component (B) in the range from 1:1 to 1:10; and(c) a photoresist layer of a photosensitive composition formed on the surface of the undercoating layer.