Liquid crystal compound and liquid crystal display device
申请人:Mitsubishi Gas Chemical Co., Inc.
公开号:US05364560A1
公开(公告)日:1994-11-15
An antiferroelectric liquid crystal compound which is a compound represented by ##STR1## 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 CH.sub.3, C.sub.2 H.sub.5 or CF.sub.3 ; k is 0 or an integer of 5 to 8; l is 0 or 1; n is an integer of 1 to 6; W denotes CH.sub.3 or CF.sub.3 ; when W is CH.sub.3, p and q are both 0 and r is 8; when W is CF.sub.3, 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.
Optically active alcohol, process for producing same and liquid crystal compound using same
申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:EP0484849A1
公开(公告)日:1992-05-13
A liquid crystal compound represented by formula (II)
wherein R denotes a linear alkyl group having 6 to 14 carbon atoms, X denotes a single bond or an oxygen atom, K and L are independently 1 or 2, m is an integer of 5 to 7, n is an integer of 1 to 4, and C* denotes an asymmetric carbon atom,
said compound having an antiferroelectric phase. This liquid crystal compound is produced by using a novel optically active alcohol represented by formula (I)
Liquid crystal compounds and liquid crystal display devices
申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:EP0545355A1
公开(公告)日:1993-06-09
Novel anti-ferroelectric liquid crystal compounds represented by the following general formula (I) and a liquid crystal display element wherein such a compound is used.
Ph represents a phenylene group,
R represents a straight-chain alkyl group having 6 to 10 carbon atoms,
X represents an oxygen atom or a single bond provided that when X is an oxygen atom, L is an integer of 5 to 8, m is 1 and n is an integer of 1 to 7, or L and m are zero (O) and n is an integer of 6 to 8, and when X is a single bond,
L is an integer of 5 to 8, m is 1 and n is an integer of 1 to 7, and
C* represents an asymmetric carbon atom.
由以下通式(I)表示的新型抗铁电体液晶化合物和使用这种化合物的液晶显示元件。
Ph 代表亚苯基、
R 代表具有 6 至 10 个碳原子的直链烷基、
X 代表氧原子或单键,条件是当 X 为氧原子时,L 为 5 至 8 的整数,m 为 1,n 为 1 至 7 的整数,或 L 和 m 均为零(O),n 为 6 至 8 的整数;当 X 为单键时,L 为 5 至 8 的整数,m 为 1,n 为 1 至 7 的整数,或 L 和 m 均为零(O),n 为 6 至 8 的整数、
L 为 5 至 8 的整数,m 为 1,n 为 1 至 7 的整数,且
C* 代表不对称碳原子。
Anti-ferroelectric liquid crystal and liquid crystal display device
申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:EP0585032A1
公开(公告)日:1994-03-02
A novel anti-ferroelectric liquid crystal of the formula (I),
wherein:
p is an integer of 3 to 8,
each of X and Y is independently a hydrogen atom or a fluorine atom,
Z is -CF₃, -CH₃ or -C₂H₅,
q is 0 or 5,
m is 0 or 1,
n is an integer of 2 to 8, and
C* is an asymmetric carbon,
provided that when m is 0, q is 0 and n is an integer of 4 to 8 and that when m is 1, q is 5 and z is -CF₃.
and use of the above liquid crystal as a liquid crystal display device.
式 (I) 的新型抗铁电体液晶、
其中
p 是 3 至 8 的整数、
X 和 Y 各自独立地为氢原子或氟原子、
Z是-CF₃、-CH₃或-C₂H₅、
q 是 0 或 5
m 为 0 或 1、
n 是 2 到 8 的整数,以及
C* 是不对称碳、
但当 m 为 0 时,q 为 0,n 为 4 至 8 的整数;当 m 为 1 时,q 为 5,z 为 -CF₃。
以及将上述液晶用作液晶显示设备。
Anti-ferroelectric liquid crystal compound and anti-ferroelectric liquid crystal composition
申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:EP0780456A1
公开(公告)日:1997-06-25
An anti-ferroelectric liquid crystal compound of the following general formula (1), and an anti-ferroelectric liquid crystal composition containing it,
wherein R is a linear alkyl group, A is -O- or -COO-, m is an integer of 5 or greater, n is an integer of 1 to 3, each of X and Y is independently a hydrogen atom or a fluorine atom, and C* is asymmetric carbon.
一种如下通式(1)的抗铁电体液晶化合物,以及含有该化合物的抗铁电体液晶组合物、
其中 R 是线性烷基,A 是-O-或-COO-,m 是 5 或更大的整数,n 是 1 至 3 的整数,X 和 Y 各自独立地是氢原子或氟原子,C* 是不对称碳。