Conductor matrix with reversible contacts - has holes made in top conducting trace and insulating layer below and two traces are soldered together at crossing points

摘要

Two sets of conducting traces are insulated from each other. They are arranged at right angles and can make contact with each other at the intersecting points. They are produced on an insulating support. The insulating layer (4) between the two sets of conducting traces (2, 3) has holes (6') at their intersecting points (6). These holes are smaller than concentric holes (6") in the top conducting traces. In order to make contact between one conducting trace (2) and the other (3), the crossing point (6) is tinned, so that the solder (7) from the trace (3) passes through its hole (6") and hole (6') in the insulating layer (4), and reaches the trace (2).