Patent ID: 8357646
Filing Date: 2013-01-22
Classification: C23G,G03F

Abstract:
1. A photoresist stripper formulation for removing photoresist, etch residue or ash residue from a semiconductor device surface, consisting of Hydroxylamine ranging from 2.5 to 5.0 wt %; Water ranging from 5 to 10 wt %; A solvent ranging from 40 to 70 wt % ,selected from the group consisting of dimethylsulfoxide; N-methylpyrrrolidine; dimethylacetamide; dipropylene glycol monomethyl ether; monoethanolamine and mixtures thereof; A base ranging from 5 to 7.5 wt %, selected from the group consisting of choline hydroxide, monoethanolamine, tetramethylammonium hydroxide; aminoethylethanolamine and mixtures thereof; A metal corrosion inhibitor ranging from 0.25 to 1.0 wt %, selected from the group consisting of catechol, gallic acid, lactic acid, benzotriazole and mixtures thereof; and A bath life extending agent glycerine, ranging from 2.0 to 10 wt %.