Connecting electrode portion in semiconductor device
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United States of America Patent
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-
Jul 15, 1997
Grant Date -
N/A
app pub date -
Jul 26, 1995
filing date -
Jul 27, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
An Al layer which serves as a lead-out electrode is formed on a semiconductor chip. An insulating layer is formed on the semiconductor chip and the Al layer. The insulating layer has an opening formed in that portion thereof which is located on the Al layer, thereby exposing a portion of the Al layer. A multi-level metal layer (barrier metal layer) is formed on the exposed portion of the Al layer and on that portion of the insulating layer which is located along the edge of the opening. A metallic nitride region is provided between a first-level metal layer in the multi-level metal layer and the insulating layer so as to be selectively formed at or under a peripheral portion of the first-level metal layer. A bump electrode is provided on the multi-level metal layer. The resultant semiconductor device is mounted on a circuit board by flip chip bonding, with the bump electrode interposed therebetween.
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