TRANSPARENT ELECTRIC FIELD SPREADING LAYER FOR DISPERSED LIQUID CRYSTAL COATINGS

PROBLEM TO BE SOLVED: To provide a method of increasing an active area which is driven by two crossing electrodes. SOLUTION: A display sheet having polymer dispersed liquid crystals, includes (a) a substrate and (b) a state changing layer disposed over the substrate and defining first and second surfaces, such state changing layer having the polymer dispersed liquid crystals having first and second optical states, which can change state. The display sheet further includes (c) first and second conductors disposed respectively over first and second surfaces of the state changing layer so that when a field applied between the first and second conductors, the liquid crystals change state; and (e) a nonconductive, field spreading layer having a transparent electrically conductive polymer dispersed sub-micron particles disposed between the state changing layer and the first conductor to provide a change of state in the state changing layer in the areas between both conductors in response to a field applied between the first and second conductors which changes the state of the liquid crystals. COPYRIGHT: (C)2003,JPO