The present invention adds one or more thick layers of polymer dielectric
and one or more layers of thick, wide metal lines on top of a finished
semiconductor wafer, post-passivation. The thick, wide metal lines may be
used for long signal paths and can also be used for power buses or power
planes, clock distribution networks, critical signal, and re-distribution
of I/O pads for flip chip applications. Photoresist defined
electroplating, sputter/etch, or dual and triple damascene techniques are
used for forming the metal lines and via fill.