POLYMER DISPERSED LIQUID CRYSTAL SHUTTER WITH WIDE OPERATIONAL TEMPERATURE RANGE

摘要

A Polymer Dispersed Liquid Crystal (PDLC) capable of consistent performance over a wide temperature range. The PDLC includes electrodes connected to eac h of the resistive layers, such as ITO layers, of the PDLC. A FET switch coupl es each electrode to a corresponding capacitor. The capacitors are charged usin g a power source. The energy stored in the capacitors can be transferred to th e resistive layers to heat the PDLC. A controller can pulse the FET switches t o control the amount of energy transferred from the capacitors to the resistiv e layers.