Patent ID: 6033996
Filing Date: 2000-03-07
Classification: H01L,Y10S

Abstract:
A method for removing etching residues, removing etching mask and for etching at least one material selected from the group consisting of silicon nitride and high density silicon dioxide; using a single composition which comprises contacting an article containing said residues, etching mask and at least one of silicon nitride and silicon dioxide with a composition containing about 0.05 to about 3 molar of a fluoride containing compound; about 0.05 to about 4 molar of water; and an organic solvent selected from the group consisting of oxalanes, sulfolanes, esters, ketones, aldehydes, lactones, halogenated hydrocarbons, alcohols, amines and imides to thereby remove said residues, said etching mask and at least portions of the silicon nitride or silicon dioxide or both.