| 摘要 |
<p>The invention relates to a nematic liquid crystal mixture having a positive dielectric anisotropy Δε of at least +4 and a birefringence Δn of at least 0.12, characterized in that the mixtures comprise one or more components having the core structure (a) wherein L1, L2, Y and Z are each independently of one another H or F, one of Q?1 and Q2¿ is 1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene and the other residue Q1 or Q2 is -CH¿2?CH2-, -CH2CH2CH2CH2- or - if at least one of L?1, L2¿, Y and Z denotes F - also a single bond, whereby this core structure can be optionally further fluorinated in the benzene rings.</p> |
