Patent ID: 7382424

Claim:
A display sheet comprising: a) an optional substrate for carrying layers of material; b) an imaging layer comprising a substantial monolayer of isolated domains of liquid-crystal material dispersed in a continuous matrix, said liquid-crystal material having a first reflecting state within the visible light spectrum defining an operating spectrum and a second weakly scattering state in said operating spectrum, wherein said states are capable of being interchanged by an electric field, which states are capable of being maintained as a stable state in an absence of an electric field, wherein said domains of liquid-crystal material comprises a mixture, coated as an emulsion to form the imaging layer, of at least two populations, a first population comprising a first liquid-crystal material having a first λ max and a second population comprising a second liquid-crystal material having a second λ max wherein there is a difference between said first and said second λ max of at least 50 nm, wherein a substantial monolayer of isolated domains of liquid-crystal material means that, at most, only a minor portion of the area of the display sheet has more than a single domain between the electrodes in a direction perpendicular to the plane of the display sheet, compared to the amount of area of the display sheet at which there is only a single domain between the electrodes, whereby a more color-neutral image area is provided when the image area is in the first reflecting state; c) first transparent conductors disposed on one side of said imaging layer; d) second conductors disposed on an opposite side of said imaging layer.