| 摘要 |
PURPOSE: Disclosed is liquid crystalline compounds having a negative and extremely large dielectric anisotropy value and a small optical anisotropy value at the same time. CONSTITUTION: The liquid crystalline compounds have 2,3-dihalogenophenylene moiety and are expressed by formula(1), wherein Ra and Rb each independently represents a linear or branched alkyl having 1 to 10 carbon, any methylene in the alkyl may be replaced by -O-, -S-, -CH=CH-, or -C IDENTICAL C-, and any hydrogen in the alkyl may be replaced by halogen; rings A1 to A4 each independently represents trans-1,4-cyclohexylene, cyclohexene-1,4-diyl, pyridine-1,4-diyl,; Y1 and Y2 each independently represents F or Cl; Z1, Z2 and Z3 each independently represents a single bond. |
