Patent ID: 6117796
Filing Date: 2000-09-12
Classification: H01L

Abstract:
A method for removing silicon oxide which comprises contacting an article containing said silicon oxide with a substantially non-aqueous cleaning composition containing about 0.05 to about 3 molar of a fluoride containing compound, an organic solvent selected from the group consisting of propylene carbonate, N-methyl pyrrolidone, gamma butyrolactone, methylene chloride, benzyl alcohol, N-formyl morpholine, N-formyl piperidine, cyclohexanone, cyclopentanone, methyl benzoate, diglyme, 2-methyl tetrahydrofuran, methyl and ethyl esters of acid selected from the group consisting of phthalic acid, isophthilic acid and terephthalic acid, and about 0.05 to about 3.5 molar of water, to thereby remove said silicon oxide.