Patent ID: 7563753

Claim:
A cleaning solution for photoresist pattern consisting essentially of: (i) water (H 2 O) as main component; (ii) 0.001 to 5 wt % of compounds of Formula 3 as an additive; and (iii) at least one alcohol compound present in a range of 0.01 wt % to 10 wt %; wherein R 3 and R 4 are selected from the group consisting of hydrogen, C 1 -C 10 alkyl, aryl, asin, C 1 -C 10 aminoalkyl, aminoaryl and pyridinyl; R 5 is amino group, C 1 -C 10 alkyl, aryl, asin, aminoalkyl, aminoaryl, or 5-(phenylazo)salicylic acid group; A is C 1 -C 5 alkylene or C 3 -C 10 aromatic hydrocarbon; and n is an integer ranging from 0 to 2.