Patent ID: 7051742
Filing Date: 2006-05-30
Classification: B24B,C09D,C11D,C23G,G03F,H01L

Abstract:
1. A method for removing etching and resist material from a multi-level substrate, comprising the steps of: (a) forming a photoresist layer on a substrate level comprising a metal; (b) exposing a portion of the photoresist layer, leaving a portion of the photoresist layer unexposed, and removing unreacted photoresist so that a resist pattern is formed; (c) etching at least a portion of the substrate, using the resist pattern as a mask; and (d) contacting the etched substrate with a cleaning composition at a temperature of between about room temperature and 100° C., to remove the resist pattern and etching residue from the etched substrate, wherein the cleaning composition comprises: wherein R 1 , R 2 , and R 3 are independently hydrogen; a C 1 –C 6 straight, branched or cyclo alkyl, alkenyl, or alkynyl group; an acyl group; a straight or branched alkoxy group, amidyl group, carboxyl group, alkoxyalkyl group, alkylamino group, alkylsulfonyl group, or sulfonic acid group; or a salt thereof; (2) from about 10% to 80% by weight of at least one organic solvent selected from the group consisting of dimethylsulfoxide, N-methyl-2-pyrrolidinone, N,N-dimethylpropanamide, N,N-dimethylformamide, ethylene glycol, ethylene glycol alkyl ether, diethylene glycol alkyl ether, triethylene glycol alkyl ether, propylene glycol, propylene glycol alkyl ether, dipropylene glycol alkyl ether, tripropylene glycol alkyl ether, N-substituted pyrrolidone, or mixture thereof; (3) from about 5% to 30% by weight of an aromatic hydroxy-functional compound having a general formula of: wherein n=1–4, m=2–5 and each R is independently hydrogen; a C 1 –C 6 straight, branched or cyclo alkyl, alkenyl, or alkynyl group; an acyl group; a straight or branched alkoxy group, amidyl group, carboxyl group, alkoxyalkyl group, alkylamino group, alkylsulfonyl group, or sulfonic acid group; or a salt thereof; and (4) water.