Patent ID: 7208403

Claim:
A method for routing a plurality of signal traces out of a plurality of corresponding bumper pads for implementation of a die on a multi-layer circuit board, the method comprising: utilizing the plurality of bumper pads positioned in a periphery area of the die; utilizing a plurality of power/ground bumper pads positioned in a center area of the die; assigning a plurality of signal traces corresponding to a plurality of bumper pads as a plurality of first-layer traces being routed in a first layer of the multi-layer circuit board; assigning a plurality of signal traces corresponding to a plurality of bumper pads as a plurality of second-layer traces being routed in a second layer of the multi-layer circuit board wherein the second layer is vertically beneath the first layer; routing the plurality of first-layer traces straight away from the die; routing the plurality of second-layer traces with a turn; and shielding the plurality of first-layer traces and the plurality of second-layer traces by routing a plurality of shielding traces out of the plurality of power/ground bumper pads; wherein the plurality of bumper pads can be grouped into a plurality of bumper-tile blocks and each bumper-tile block comprises 8 bumper pads organized in a plurality of triangle units with equal length of each side.