Patent ID: 7755583

Claim:
An electro-optic device comprising: a patterned electrode layer and a non-patterned electrode layer; a liquid crystal layer disposed therebetween; and means for applying voltage to both of the electrode layers, wherein the voltage applied to each electrode layer is out-of-phase with respect to the voltage applied to the other electrode layer so that the voltages applied to the electrode layers constructively interfere so that the total voltage across the liquid crystal layer is greater than or equal to the voltage needed to change the optical transmission thereof, wherein the root mean square of the voltage applied to each electrode layer is below the root mean square of the voltage needed to change the optical transmission of the liquid crystal layer and wherein the voltage applied to both of the electrode layers constructively interferes so that the root mean square of the total voltage is greater than or equal to the root mean square of the voltage needed to change the optical transmission of the liquid crystal layer.