Patent ID: 7920245
Filing Date: 2011-04-05
Classification: E06B,G02F

Abstract:
1. A light-modulating material, comprising: a transparent front surface layer; an intermediate layer comprising a liquid crystal; and a transparent back surface layer, laminated in this order, wherein the intermediate layer comprises structures periodically placed therein, wherein the structures comprise the liquid crystal located therein and/or located between the structures, wherein a pair of electrodes is set at the front surface layer and the back surface layer and the liquid crystal is located between the electrodes, and wherein the liquid crystal forms an isotropic phase in a non-electrified state of the electrodes, and the liquid crystal forms an aligned phase in an electrified state of the electrodes, wherein the intermediate layer comprising the liquid crystal that forms the isotropic phase does not have an anisotropic refractive index, and the intermediate layer comprising the liquid crystal that forms the aligned phase has an anisotropic refractive index, wherein the liquid crystal has isotropic phase transition temperature between −40° C. to 40° C. and forms the isotropic phase at a temperature greater than the isotropic phase transition temperature, wherein transmissivity of the intermediate layer in the electrified state is lower than that in the non-electrified state, and wherein the light-modulating material does not include a polarizing plate.