Patent ID: 6464897
Filing Date: 2002-10-15
Classification: B41M,C09K,G02F

Abstract:
A liquid crystal composition including at least one cholesteric liquid crystal compound that exhibits a cholesteric phase at a temperature higher than room temperature,said liquid crystal compound having the characteristic, in said cholesteric phase, of reflecting light incident thereon in the visible light range in accordance with a temperature thereof, and having the characteristic, when rapidly cooled from said cholesteric phase, of solidifying in a reflective state, wherein an enthalpy &Dgr;Hch of the liquid crystal compound during a transition from a solid phase to said cholesteric phase is substantially constant at a value A (0&lE;A&lE;15 mJ/mg) during a time when a temperature thereof increases during one of differential thermal analysis and differential scanning calorimetry.