The liquid crystal display device of the present invention comprises a liquid crystal layer of a nematic liquid crystal having positive dielectric anisotropy and including a chiral material, the liquid crystal layer being interposed between a pair of substrates with transparent electrodes each having...http://www.google.fr/patents/US5194975?utm_source=gb-gplus-shareBrevet US5194975 - Liquid crystal display device having biaxial birefringent plates at each side of the liquid crystal layer
Liquid crystal display device having biaxial birefringent plates at each ...
