| abstract |
A bistable light modulating device which comprises a first transparent substrate (10), a first transparent electrode (20), a liquid crystal layer (30), a second transparent electrode (40) and a second transparent substrate (50) stacked in sequence, wherein the liquid crystal layer (30) contains a liquid crystal mixture including at least one bimesogenic compound, at least one nematic liquid crystal compound, at least one chiral compound and at least one organic ionic compound, wherein the bistable light modulating device includes two zero-electric-field-stable states: a transparent state where substantially all the incident light is transmitted and a light scattering state where substantially all the incident light is scattered. The bistable light modulating device can refresh the haze in the light scattering state and avoid the loss of privacy. |