Patent ID: 7440160
Filing Date: 2008-10-21
Classification: C09K,G02F

Abstract:
1. An electro-optical light modulation element comprising a substrate or a plurality of substrates, an electrode arrangement, mesogenic a modulation medium, wherein the light modulation element is operated at the temperature at which the modulation medium in the unaddressed state is in an optically isotropic phase and the mesogenic modulation medium comprises a chiral component, component (A), which consists of one or more chiral compounds, at least one of which has an HTP of 30 μm the mesogenic modulation medium comprises an achiral component, component (B), which consists of one or more achiral compounds, the light modulation element is operated at the temperature at which the mesogenic modulation medium has a blue phase or the light modulation element is operated at the temperature at which the mesogenic modulation medium is in the isotropic phase, wherein the relative temperature dependence (dV*