An electro-optical device, provided with a liquid crystal layer and a photoconductive layer, for converting a light input image into a projection image is characterized in that (A) a shading layer having a plurality of penetrating holes corresponding to picture elements and (B) a plurality of reflectors,...http://www.google.com.au/patents/US4538884?utm_source=gb-gplus-sharePatent US4538884 - Electro-optical device and method of operating same
