Patent ID: 7531491

Claim:
An aqueous cleaning solution for cleaning an integrated circuit device, comprising: a low foaming surfactant; a metal corrosion inhibitor; a pH control agent; and water, and wherein the metal corrosion inhibitor is a compound represented by the following formula 8: R 2 (Z)-C≡C-(Z)-R 3 [Formula 8] wherein Z is a straight or a branched hydrocarbon group having 1˜10 carbon atoms, R2 and R3 are independently methyl (CH3), methoxy (OCH3), a halide (X), amino (NH2), nitro (NO2), thio (SH), hydroxy (OH), an aldehyde (CHO) or a carboxylic acid (COOH) and wherein the low foaming surfactant is a compound represented by the following formula 7: R 1 —O(CH 2 CH 2 O) m —X [Formula 7] wherein R1 is methyl, butyl, iso-butyl, iso-octyl, nonyl phenyl, octyl phenyl, decyl, tridecyl, lauryl, myristyl, cetyl, stearyl, oleyl, linoleyl or behnyl, m is a number ranging from 0 to 50, and X is methyl, ethyl, propyl, iso-propyl, butyl, or iso-butyl.