Semiconductor devices having protruding contacts

Details Semiconductor devices having protruding contacts Semiconductor devices having protruding contacts

1997-02-24

1999-09-14

Brown, Peter Toby

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

Combined with electrical contact or lead

Bump leads

257778, H01L 2348

Patent

active

059527188

ABSTRACT:
A semiconductor device having a protection layer covering the active layer of a semiconductor chip with an opening therein corresponding in location to a chip electrode located on the active surface of the semiconductor chip. Inside the opening a barrier layer covers the chip electrode, a diffusion barrier layer covers the barrier layer and a protruding contact protruding from the diffusion barrier layer. The protruding contact preferably comprises material whose hardness is lower than that of each of the barrier layer and chip electrode.

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