ELECTROOPTICAL PROPERTIES OF THE NORMALLY TRANSPARENT TYPE ANISOTROPIC POLYMER-DISPERSED LIQUID-CRYSTAL FILMS

We fabricate normally transparent type of polymer dispersed liquid cry stal (PDLC) films, which are composed of nematic liquid crystals in an isotropic polymer network. The glass substrates of the films are treat ed with rubbing such that the polymer and liquid crystal molecules are plane parallel aligned in the sample cell. The liquid crystals used a re 5CB and 7CB. The polymer is cured at a variety of UV wavelengths an d intensities. The electro-optical properties of these PDLC films are reported. This type of transparent PDLC shows an improvement in the tr ansparency of the clear state and a decrease in the driving voltage.