The present invention provides a bonding pad structure for integrated
circuit devices which allows the active circuits to be placed under
bonding pads of the device without affecting the performance of the
active circuits. The bonding pad structure is composed of at least two
metal layers overlying the active circuits so that the bonding pad may be
subjected to thermal and mechanical stresses without damaging the
underlying active circuits. The metal layer underlying the bonding pad is
patterned and etched forming an array of openings in the metal that may
take any shape, e.g. slots, grid, circles. The present invention enables
a reduction in the chip area and eliminates the parasitic resistance due
to long interconnection wires between bonding pads and active regions.