LIQUID CRYSTAL MIXTURES WITH WIDE MESOMORPHIC RANGE AND HIGH CONTRAST.

In order to obtain a nematic mixture with wide nematic range and high contrast, BOCPD and MBBCOA/BBPCOA binary were added to a MBBA/BBBA mixture. Both materials have wide nematic range and large negative dielectric anisotropy in comparison with the MBBA/BBBA mixture base material. The addition of BOCPD and MBBCOA/BBPCOA binary in the MBBA/BBBA material was effective in improving thermal and optical properties. By addition of these materials into the MBBA/BBBA material, two new mixtures with contrast over 20 and nematic range from minus 11 to 95 degree C and from minus 17 to 66 degree C respectively were developed.