| 摘要 |
<p>PURPOSE:To prevent the corrosion of a signal line which is passed through the region of a pad electrode which is not connected to the outside even when the pad electrode is corroded. CONSTITUTION:Pad electrodes 6, 7 for external-circuit connection use are formed of a metal interconnection layer in the uppermost layer; a signal interconnection, 3 is formed of a lower-layer metal interconnection layer. An interlayer insulating film 4 is laid between the signal interconnection 3 and the pad electrode 7 under the pad electrode 7 through which the signal interconnection 3 is passed. Thereby, it is possible to prevent the corrosion of the signal interconnection 3 even when the pad electrode 7 is corroded when moisture ingresses from the outside.</p> |
