TESTING AND INCREASING BREAKDOWN VOLTAGE OF CROSSOVERS

摘要

Crossover conductors on thin film circuits are tested for mechanical weakness, and the voltage breakdown strength between the crossover conductors and underlying crossunder conductors is improved by using a resilient cylindrical surface to bring a tape coated with a pressure sensitive adhesive into rolling contact with the circuits. As the adhesively coated tape separates from the circuits, an adhesive force breaks mechanically weak crossover conductors from the circuits. The voltage breakdown strength of mechanically strong crossover conductors is improved by an increased separation between the crossover and the crossunder conductors.