An antiferroelectric liquid crystal compound which is a compound represented by
(1) formula (I-a)
(2) formula (I-b)
(3) formula (I-c)
wherein R denotes a linear aliphatic alkyl group having 6 to 14 carbon atoms; A denotes a single bond or an oxygen atom; X and Y independently denote a hydrogen atom or a fluorine atom but they are not hydrogen atoms at the same time; h and i are independently 1 or 2; m is an integer of 3 to 10; Z denotes CH3, C2H5 or CF3; k is 0 or an integer of 5 to 8; I is 0 or 1; n is an integer of 1 to 6; W denotes CH3 or CF3; when W is CH3, p and q are both 0 and r is 8; when W is CF3, p is 5 to 8, q is 1 and r is 1 to 4; and C* denotes an asymmetric carbon atom,
and a liquid crystal display device using same.
一种反
铁电液晶化合物,它是由以下各项表示的化合物
(1) 式(I-a)
(2) 式 (I-b)
(3) 式 (I-c)
其中 R 表示具有 6 至 14 个碳原子的线性脂肪族烷基;A 表示单键或氧原子;X 和 Y 独立地表示氢原子或
氟原子,但它们不能同时为氢原子;h 和 i 独立地为 1 或 2;m为3至10的整数;Z表示
CH3、
C2H5或
CF3;k为0或5至8的整数;I为0或1;n为1至6的整数;W表示 或 ;当W为 时,p和q均为0,r为8;当W为 时,p为5至8,q为1,r为1至4;以及C*表示不对称碳原子、
以及使用这种材料的液晶显示装置。