Dichroic dye-doped bistable polymer-stabilized cholesteric-texture light valve

摘要

We have carried out systematic investigations on a non-polar dichroic-dye-doped bistable polymer-stabilized cholesteric-texture (PSCT) normal-mode light modulator. The addition of a small amount of dichroic dye (～1.0 wt./100) helps considerably to reduce the transmittance in the OFF state and therefore gives rise to an overall improvement in contrast ratio. Furthermore, collection-angle dependence of the contrast ratio is reduced by the addition of the dichronic dye