Novel optical configurations in high contrast chiral nematic liquid crystal displays

摘要

This invention is related to a configuration of a full spectrum black-and-white chiral nematic liquid crystal display comprising a chiral nematic liquid crystal cell of controllable planar structure and focal conic structure, the cell comprising chiral nematic liquid crystal material between two transparent substrates having electrodes; and the cell being arranged between two circular polarizers, wherein at least one circular polarizer is of opposite handedness to the chiral nematic liquid crystal material. In some configurations there may be a light source.