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    • 75. 发明公开
    • FLUORINATED ALKYL ETHER COMPOUNDS, LIQUID-CRYSTAL COMPOSITIONS, AND LIQUID-CRYSTAL DISPLAY DEVICES
    • FLUORIERTE ALKYLETHER,FLÜSSIGKRISTALLINEZUSAMMENSETZUNGEN,SOWIEFLÜSSIGKRISTALLINESICHTANZEIGEN
    • EP0926120A1
    • 1999-06-30
    • EP97924341.7
    • 1997-06-06
    • CHISSO CORPORATION
    • KONDO, TomoyukiMATSUI, ShuichiMIYAZAWA, KazutoshiTAKEUCHI, HiroyukiTAKESHITA, FusayukiNAKAGAWA, Etsuo
    • C07C43/225C07D319/06C09K19/12C09K19/14C09K19/30C09K19/34C09K19/42G02F1/13
    • C09K19/3001C07C43/225C07C2601/14C07C2601/16C09K19/04C09K19/14C09K19/3028C09K19/42C09K19/46Y10T428/10
    • Liquid-crystal compounds which are excellent in compatibility with other liquid-crystal materials particularly even at low temperatures, have a high voltage retention and a low threshold voltage, are lowered in the temperature dependence of these characteristic values, have a high Δn value, and exhibit liquid-crystal properties over a wide temperature range, the compounds being represented by the general formula: R a -A 1 -Z 1 -A 2 -Z 2 -(-A 3 -Z 3 -) m -A 0 -Rf (wherein m is 0 or 1; A 0 , A 1 , A 2 and A 3 are each a six-membered ring, with A 0 being 1,4-phenylene which may be substituted with one to three fluorine and/or chlorine atoms and A 1 , A 2 and A 3 being selected each independently from among trans-1,4-cyclohexane, optionally halogenated 1,4-phenylene, cyclohexene-1,4-diyl and 1,3-dioxane-2,5-diyl; Z 1 , Z 2 and Z 3 are each independently a bridge between rings and selected from among -(CH 2 ) 2 -, -(CH 2 ) 4 -, -CH 2 O-and -OCH 2 - which may be halogenated, and single bond (-); Rf is -OCF 2 CF 2 H or -OCF 2 CFHCF 3 ; and Ra is a C 1 -C 20 linear or branched monovalent organic group); liquid-crystal compositions comprising at least one of the compounds; and liquid-crystal display devices made by using the compositions.
    • 与其他液晶材料的相容性优异,特别是即使在低温下也具有高电压保持和低阈值电压的液晶化合物在这些特性值的温度依赖性方面降低,具有高DELTA n值, 并且在宽的温度范围内具有液晶性能,该化合物由通式表示:Ra-A1-Z1-A2-Z2 - ( - A3-Z3-)m-A0-Rf(其中m为0或1 A 0,A 1,A 2和A 3分别为六元环,A 0为可被1〜3个氟原子和/或氯原子取代的1,4-亚苯基,A1,A2和A3各自独立地选自 反式-1,4-环己烷,任选卤代的1,4-亚苯基,环己烯-1,4-二基和1,3-二恶烷-2,5-二基; Z 1,Z 2和Z 3各自独立地为环之间的桥, 可以被卤化的 - (CH 2)2 - , - (CH 2)4 - , - CH 2 O-和-OCH 2 - ,和单键( - ); R f是-OCF 2 CF 2 H或-OCF 2 CFHCF 3; Ra为C1-C20直链或支链一价有机基团); 包含至少一种化合物的液晶组合物; 以及使用该组合物制成的液晶显示装置。