Patent ID: 7531491
Filing Date: 2009-05-12
Classification: C11D

Abstract:
1. 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: 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: 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.