| 摘要 |
PURPOSE:To make multiple terminal wiring easy by a method wherein an Al wire not coated with an insulating material is coated with an insulating film by means of an anode oxidation after wiring operation. CONSTITUTION:A pad 4 of IC chip 1 and a lead frame 6 are connected to each other using a bare Al wire 5 and the surface is immersed in oxalic acid solution 7 while an anode of power supply 8 and the other electrode are respectively connected to the lead frame 6 and the electrode of the solution 7 forming an Al2O3 film 10 on the surface of the Al wire 5. In such a constitution, the Al2O3 film may prevent a shortcircuit from generating making multiple terminal wiring easy. |
