Patent ID: 7033523
Filing Date: 2006-04-25
Classification: C09K

Abstract:
1. A composite liquid crystalline mixture having a low refractive index and a chemical reactive power that makes it capable of minimizing an anchoring energy when in contact with silica, said mixture comprising: (a) low ordinary refractive index nematic liquid crystal of a single type or a mixture of low ordinary refractive index nematic liquid crystals of different types; (b) at least one reagent compound capable of reducing the anchoring energy via a chemical shielding process and from which originates a decoupling effect with a glass interface leading to the reduction of the anchoring energy and appropriately orienting a liquid crystal director at this interface; and (c) at least one low refractive index additive capable of modifying dielectric anisotropy, conductivity and viscosity of the mixture, and having a low viscosity and a refractive index that is lower than the ordinary refractive index of the liquid crystalline mixture so as to decrease and adjust the ordinary refractive index of said mixture below the refractive index of silica.