Patent ID: 9249356
Filing Date: 2016-02-02
CPC Classification: C09K,H01L,Y02E

Claim Text:
1. A guest-host liquid crystal dye mixture comprising a calamatic, thermotropic liquid crystal as host and a dichroic fluorescent dye as guest, wherein the dichroic fluorescent dye is a multichromophoric dye containing at least a group having the general formula Ry-X 1 -C 1 , wherein Ry is a first chromophore from the rylene family, C 1 is a second chromophore and X 1 is a spacer that interrupts the conjugation between Ry and C 1 , wherein the spacer X 1 is selected such that it introduces rigidity against bending or folding over an axis perpendicular to the length of the molecule, and wherein the multichromophoric dye has a linear arrangement.