Patent ID: 6999142

Claim:
A display comprising, in order from front to back wherein the front of display is viewable by an observer, the following: a) an optional substrate; b) transparent first conductors; c) An imaging layer comprising polymer-dispersed cholesteric liquid-crystal material transmitting light in a focal-conic state and reflecting light in a planar state to provide a liquid-crystal-derived first reflected light reaching the observer, and d) a complementary light-absorbing layer; e) a reflective surface reflecting light passing through the imaging layer and the complementary light-absorbing layer, back through the complementary light-absorbing layer, thereby providing a color-filtered second reflected light reaching the observer; and f) second conductors optionally forming said reflective surface; wherein the complementary light-absorbing layer has a light absorbance such that, when the liquid-crystal material is in the planar state, the total reflected light reaching the observer, comprising both the liquid-crystal-derived first reflected light and the color-filtered second reflected light, is substantially more neutral than the liquid-crystal-derived light alone without the color-filtered second reflective light.