MULTISTABLE ELECTROOPTIC ELEMENT Russian patent published in 2011 - IPC G02F1/1334 

FIELD: physics.

SUBSTANCE: in an element, having two parallel transparent plates with transparent electrodes on inner sides between which there is a film of a capsular polymer of cholesteric liquid crystal, the cholesteric liquid crystal used is a mixture of an ionic surfactant and a cholesteric liquid crystal with arbitrary value of dielectric anisotropy. Components of the composition - cholesteric liquid crystal polymer - are chosen such that n_o≅n_p, where at n_o is ordinary refraction index in untwisted state of the mixture of cholesteric liquid crystal and the ionic surfactant; n_p is the refraction index of the polymer.

EFFECT: possibility of obtaining a transparent state, a light-scattering state and intermediate states of the element, which can be realised at any values of dielectric anisotropy of the cholesteric liquid crystal used.

2 dwg