Patent ID: 7579308
Filing Date: 2009-08-25
Classification: C11D,C23F,G03F,H01L,H05K

Abstract:
1. A composition for removing a polymer, etch residue, ash residue, or a combination thereof from a substrate on which a circuit or a portion of a circuit is present, which composition comprises: an organic ammonium compound having the formula wherein: X is hydroxide, sulfate, hydrogen sulfate, phosphate, hydrogen phosphate, dihydrogen phosphate, nitrate, a carboxylate, a halide, carbonate, hydrogen carbonate, bifluoride, or a combination thereof, R R more than about 2% by weight of an oxoammonium compound having the formula wherein: wherein the composition is capable of removing the polymer, the etch residue, the ash residue, or the combination thereof from the substrate, while maintaining the operability of the circuit, or portion thereof, associated with the substrate, wherein the pH of the composition is above about 9, and wherein the organic ammonium compound is present in an amount from about 1% to about 30% by weight, the water is present in an amount from about 15% to about 94% by weight, the organic polar solvent is present in an amount from about 25% to about 85% by weight, and the oxoammonium compound is present in an amount not more than about 10% by weight.