In a light valve, a liquid crystal layer made of liquid crystal/resin composite is interposed between a transparent substrate with a counterelectrode and a reflection substrate with reflection electrodes. The size of the transparent substrate is designed so that the light modulated...http://www.google.se/patents/US5737050?utm_source=gb-gplus-sharePatent US5737050 - Light valve having reduced reflected light, high brightness and high contrast 
