Patent ID: 6462005
Filing Date: 2002-10-08
Classification: G03F,H01L

Abstract:
A cleaning agent for removing a processing structure, from a semiconductor device during the manufacture thereof without causing corrosion of metal components included in the semiconductor device, said cleaning agent comprisingan aqueous solution comprising: a quarternary ammonium salt contained in the aqueous solution and having the general formula [(R 1)3Nâ€”R]+.Xâˆ’where R represents an alkyl group of 1-4 carbon atoms, or a hydroxyl substituted alkyl group of 1-4 carbon atoms, N represents nitrogen, R1 represents an alkyl group of 1-4 carbon atoms, and X represents an organic or inorganic acid group; and a fluoro compound wherein the quarternary ammonium salt is selected from the group consisting of tetramethyl ammonium formate, tetramethyl ammonium acetate, tetramethyl ammonium propionate, tetramethyl ammonium butyrate, tetramethyl ammonium oxalate, tetramethyl ammonium malonate, tetramethyl ammonium maleate, tetramethyl ammonium fumarate, tetramethyl ammonium citraconate, tetramethyl ammonium benzoate, tetramethyl ammonium toluate, tetramethyl ammonium phthalate, tetramethyl ammonium acrylate, trimethyl(2-hydroxyethyl)ammonium formate, trimethyl(2-hydroxyethyl)ammonium acetate, trimethyl(2-hydroxyethyl)ammonium benzoate, trimethyl(2-hydroxyethyl)ammonium phthalate, tetraethyl ammonium formate, tetraethyl ammonium acetate, tetrapropyl ammonium formate, tetrapropyl ammonium acetate, tetrabutyl ammonium formate, tetrabutyl ammonium acetate, tetramethyl ammonium borate, tetramethyl ammonium phosphate, tetramethyl ammonium sulfate, trimethyl(2-hydroxyethyl)ammonium borate, trimethyl(2-hydroxyethyl)ammonium phosphate and trimethyl(1-hydroxyethyl)ammonium sulfate.