Light emitting diode matrix

In a light emitting diode matrix, a substrate having, in order, first, second, third, and fourth adjacent edges;

• a first plurality of light emitting diodes, each having an anode electrode centered on its anode end face and a plurality of cathode electrodes positioned around the periphery of its cathode end face, arranged in rows and columns of a rectangular coordinate system;
• a second plurality of row conductors, equal in number to the number of rows of said diodes, each electrically contacting the anode electrodes of said diodes of its respective row;
• a third plurality of column conductors, equal in number to the number of said columns of diodes, each electrically contacting the cathode electrodes of its respective column and thence extending over said first edge of said substrate;
• said anodes and said row conductors being positioned upon a first surface of said substrate, with said anodes directed toward said substrate, with said column conductors contacting said cathode electrodes on the outer surface of said matrix and each having a fourth, equal to said second plurality of row conductors, plurality of openings formed therein and positioned over the non-electrode portions of the cathode surfaces of said diodes;
• the improvement comprising:
• said row conductors extending in rows along said first surface of said substrate, thence over said second edge of said substrate, thence extending in rows from said second edge on the second surface of said substrate, the positions of said row conductors on said second surface being contoured to turn through a right angle, and thence to said third edge of said substrate.