| 摘要 |
<p>Liquid crystal medium (Q) comprises one or more selenophene compounds (I). Liquid crystal medium (Q) comprises one or more selenophene compounds of formula (I). R 1>1>, R 1>2>alkyl, alkoxy, fluorinated 1-7C-alkyl or fluorinated 1-7C-alkoxy, 2-7C-alkenyl, 2-7C-alkenyloxy, 2-7C-alkoxyalkyl or fluorinated 2-7C-alkenyl; ring A 1>1>cyclohexan-1,4-yl, cyclohexen-1,4-yl, tetrahydro-pyran-2,5-yl, [1,3]dioxan-2,5-yl, benzen-1,4-yl, 2-fluoro-benzen-1,4-yl, or 1,3-difluoro-benzen-2,5-yl; k : 0 or 1; and ring A 1>2>, A 1>3>benzen-1,4-yl, 2-fluoro-benzen-1,4-yl, or 1,3-difluoro-benzen-2,5-yl. An independent claim is included for the preparation of (Q) comprising mixing (I) with one or more further liquid crystal compounds, which are one or more fluoro substituted benzene compound of formula (II), substituted benzene compound of formula (III), substituted cyclohexane compound of formula (IV), and substituted dibenzene compound of formula (V), and optionally with one or more additives. R 2>, R 3>, R 4>1>, R 4>2>, R 5>1>, R 5>2>R 1>1>; ring A 2>1>-ring A 3>2>, ring A 4>1>, ring A 4>2>ring A 1>1>; L 2>1>, L 2>2>, L 3>1>, L 3>2>H or F; X 2>, X 3>1-3C-alkyl, 2C or 3C-alkenyl or alkenyloxy (all halogenated), or halo; Z 3>CH 2CH 2-, -CF 2CF 2-, -COO-, trans-CH=CH-, trans-CF=CF-, -CH 2O- or a single bond; m, n : 0-3; Z 4>1>, Z 4>2>CH 2CH 2-, -COO-, trans-CH=CH-, trans-CF=CF-, -CH 2O-, -CF 2O-, -C?=C- or a single bond; p, r : 0-2; ring A 5>ring A 1>2>; and Z 5>1>, Z 5>2>CH 2CH 2-, -COO-, trans-CH=CH-, trans-CF=CF-, -CH 2O-, -CF 2O-, or a single bond. [Image] [Image] [Image] [Image].</p> |
