| 摘要 |
Nematic liquid crystal (LC) medium contains a dielectrically negative, LC component containing compound(s) (I) with 2 or 3 phenyl rings, at least one of which is 2,3-difluoro-1,4-phenylene, another, different dielectrically negative component and optionally a dielectrically neutral LC component and/or dielectrically positive LC component. Nematic liquid crystal (LC) medium contains: (a) a dielectrically negative, LC component (A) containing compound(s) of formula (I); (b) another, different dielectrically negative component (B); and optionally (c) a dielectrically neutral LC component (C); and/or (d) dielectrically positive LC component (D); R11, R12 = 1-7 C alkyl or alkoxy or 2-7 C alkoxyalkyl, alkenyl or alkenyloxy; A11, A12 = 2,3-difluoro-1,4-phenylene in one or both cases, otherwise, if appropriate, 2- or 3-fluoro-1,4-phenylene or 1,4-phenylene; Z11, Z12 = -CH2-CH2-, -CH2-CF2-, -CF2-CH2-, -OCH2-, -CH2O-, -OCF2-, -CF2O- or a single bond; n = 0 or 1; A10 = unsubstituted 1,4-phenylene unless A12 is 2- or 3-fluoro-1,4-phenylene, in which case 1 or more H atoms in A10 may be replaced by F. |
