Patent ID: 6565736
Filing Date: 2003-05-20
Classification: C02F,H01L,Y02E

Abstract:
A wet process performed with cathode water and anode water in the manufacture of a semiconductor device, the wet process comprising:supplying deionized water into an anode cell and a cathode cell of a 3-cell electrolyzer; supplying an electrolytic aqueous solution into an intermediate cell of the 3-cell electrolyzer to perform electrolysis, wherein the anode cell, the intermediate cell, and the cathode cell of the 3-cell electrolyzer are divided by ion exchange membranes, wherein the intermediate cell is interposed between the anode cell and the cathode cell, and wherein the electrolytic aqueous solution is selected from the group consisting of an ammonium hydroxide solution, a hydrochloric acid solution, and a mixture of ammonium hydroxide and a fluoride-containing solution; producing, by the electrolysis, anode water containing oxidative substances and cathode water containing reductive substances; and using at least one of the anode water containing oxidative substances and cathode water containing reductive substances in the wet process.