| 摘要 |
The invention relates to liquid crystal compounds of formula (1), where X<1>, X<2>, X<3>, Z<1>, Z<2>, L<1>, L<2>, L<3>, L<4>, L<5>, L<6>, L<7>, L<8>, L<9>, L<10>, L<11 >and a have the meanings given in claim 1, and liquid crystal media containing at least one compound of formula (I) and electro-optical displays comprising such a liquid crystal medium.
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