HOLOGRAPHICALLY-FORMED POLYMER DISPERSED LIQUID CRYSTALS WITH MULTIPLE GRATINGS

摘要

A multicolored reflection liquid crystal display device includes a pair of substrates (24, 26) having a reflective holographic polymer dispersed liquid crystal (H-PDLC) film (22) disposed therebetween. The H-PDLC film contains at least two different reflection gratings (30, 33) capable of reflecting two different wavelengths of light. A multicolored reflection H-PDLC is obtained by simultaneously illuminating a plurality of regions of a film comprised of a mixture of a liquid crystal and a photo-polymerizable monomer with a plurality of holographic light patterns capable of providing liquid crystal layers of different spacings so as to obtain different reflection gratings in each of the regions.