| 摘要 |
<p>PURPOSE:To easily check wiring and to prevent an electrostatic breakdown by connecting nonlinear element circuits between 1st and 2nd layer conductors and common electrodes and making the nonlinear element circuit function as high resistance element when a low voltage is applied or as low resistance elements when a high voltage is applied. CONSTITUTION:The nonlinear element circuits 21 and 22 which decrease in resistance value nonlinearly as the potential difference between the 1st and 2nd layer conductors 5 and 7 and common electrodes 9 and 10 increase are connected between the 1st and 2nd layer conductors and common electrodes 9 and 10. The nonlinear element circuits 21 and 22 hardly supply currents when the applied voltage is <=30V, but increase the current value along an exponential function almost when the applied voltage exceeds 30V. Consequently, when static electricity is applied, the currents flow through the nonlinear element circuits 21 and 22 and common electrodes 9 and 10, so the layer conductors 5 and 7 can be protected against the electrostatic breakdown and when a low inspection voltage for conductor checking is applied, the resistance values of the nonlinear circuits 21 and 22 are much larger than those of the conductor resistance value, so the individual layer conductors 5 and 7 can easily be checked.</p> |
