Patent ID: 7777930
Filing Date: 2010-08-17
Classification: G02F

Abstract:
1. Electro-optical light modulation element comprising a substrate or a plurality of substrates, an electrode arrangement, at least one element or a plurality of elements for polarisation of the light and a modulation medium, wherein the light modulation element is operated at a temperature at which the modulation medium is in optically isotropic phase in the unaddressed state, and the modulation medium is in blue phase at the operating temperature of the light modulation element the modulation medium has an average dielectric permittivity (ε the electrode arrangement can generate an electric field having a significant component parallel to the surface of the modulation medium, and in that the light modulation element includes a solid dielectric layer between the electrode arrangement and a mesogenic modulation layer, and wherein the optically isotropic phase is a polymer network system.