OPTICAL MODULATION DEVICE AND DRIVING METHOD THEREOF

摘要

An optical modulation device and a method for driving the device are disclosed. In one aspect, the method includes applying a plurality of driving voltages having different voltage values to a plurality of lower electrodes and a selected one of the driving voltages to an upper electrode so as to generate substantially periodic phase modulation to a liquid crystal layer. The optical modulation device includes a first plate including the lower electrodes and a first aligner, a second plate facing the first plate and including an upper electrode and a second aligner, and the liquid crystal layer positioned between the first and second plates. The alignment directions of the first and second aligners are substantially parallel to each other. The method also includes applying a reset signal to the lower electrodes and the upper electrode so as to turn off the optical modulation device.

主权项

1. A method for driving an optical modulation device, the method comprising:
first applying a plurality of driving voltages having different voltage values to a plurality of lower electrodes and a selected one of the driving voltages to an upper electrode so as to generate substantially periodic phase modulation to a liquid crystal layer, wherein the optical modulation device includes a first plate including the lower electrodes and a first aligner, a second plate facing the first plate and including an upper electrode and a second aligner, and the liquid crystal layer positioned between the first and second plates, and wherein the alignment directions of the first and second aligners are substantially parallel to each other; and second applying a reset signal to the lower electrodes and the upper electrode so as to turn off the optical modulation device, wherein the first applying and the second applying are alternately performed.