Semiconductor device having aluminum and metal electrodes...

Details Semiconductor device having aluminum and metal electrodes... Semiconductor device having aluminum and metal electrodes...

2006-04-18

2006-04-18

Parekh, Nitin (Department: 2811)

Active solid-state devices (e.g., transistors, solid-state diode

Combined with electrical contact or lead

Of specified configuration

C257S712000, C257S713000, C257S737000, C257S786000, C257S690000

Reexamination Certificate

active

07030496

ABSTRACT:
A semiconductor device includes a semiconductor substrate; an aluminum electrode disposed on the substrate; a protection film disposed on the aluminum electrode; an opening disposed on the protection film for exposing the aluminum electrode; and a metal electrode disposed on a surface of the aluminum electrode through the opening. The aluminum electrode includes a concavity disposed under the opening. The aluminum electrode disposed at the concavity has a thickness equal to or larger than a depth of the concavity. The surface of the aluminum electrode includes multiple concavities and multiple convexities.

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