Patent ID: 7148141

Claim:
A method for manufacturing a metal structure having different heights comprising the steps of: forming a first seed layer on a semiconductor substrate; depositing an insulating layer on the first seed layer and forming a second seed layer thereon; making a pattern on the second seed layer and the insulating layer; forming a plating mold having a first groove corresponding to the first seed layer and a second groove corresponding to the second seed layer on an upper part of the patterned structure; forming plating layers having different thicknesses on the first groove and the second groove, respectively, of the plating mold by performing a plating process while applying different currents on the first seed layer and the second layer, respectively; forming a first metal structure and a second metal structure having different heights with respect to each other by removing the plating mold and exposing the plating layer; and removing unnecessary residual portions of the first seed layer and second seed layer.