| 摘要 |
PURPOSE:To provide a nematic liq. crystal compsn. which is wide in the nematic liq. crystal temp. range, excellent in the steepness, high in the speed of response, low in the optical threshold voltage, and excellent in the dynamic drive characteristics and which comprises four particular kinds of compds. CONSTITUTION:7-72wt% at least one compd. (A) of formula I (wherein R1-R2 are each a 1-12C straight-chain alkyl) is mixed with 4-38wt% at least one compd. (B) of formula II (wherein R3-R4 are each a 1-10C straight-chain alkyl), 5-38wt% at least one compd. (C) of formula III (wherein R5 is a 1-10C straight-chain alkyl), and 3-30wt%, pref. 5-25wt% at least one compd. (D) of formula IV (wherein R6-R7 are each a 1-10C straight-chain alkyl).
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