Patent ID: 7141269

Claim:
A molding technique for copper interconnecting wires by electrochemical displacement deposition on the pre-shaped metal layer comprising the following steps: step 1: preparing a silicone wafer that is used as a substrate; step 2: forming a wet oxide on the substrate by a stove in high temperature; step 3: forming a layer of Si 3 N 4 and used as a corrode-proof layer; step 4: adding N 2 into a sputtering apparatus to form TiN on the corrode-proof layer having a thickness about 100 Å and used as an adhering layer; step 5: forming a layer on the adhering layer in the sputtering apparatus and used as a sacrificial layer, the adhering layer being used to enhance the connection between the sacrificial layer and the corrode-proof layer; step 6: patterning the sacrificial layer and cutting the unnecessary portion relative to the copper interconnecting wires, wherein the patterned sacrificial layer is used as a mold for displacement and amassing the copper interconnecting wires; step 7: mixing a reaction solution; step 8: putting the substrate with the mold into the reaction solution; and step 9: taking the substrate from the reaction solution and then the copper interconnecting wires are formed on the substrate due to the mold on the sacrificial layer.