| 摘要 |
An anti-ferroelectric liquid crystal composition comprising substantially a phenyl triester compound of the formula (1), <CHEM> wherein R<1> is a linear alkyl group having 6 to 12 carbon atoms, m is an integer of 0 to 3, n is an integer of 1 to 3, and X<1> is a hydrogen atom or a fluorine atom, and an anti-ferroelectric liquid crystal compound of the formula (2), <CHEM> wherein R<2> is a linear alkyl group having 6 to 12 carbon atoms, X<2> is a hydrogen atom or a fluorine atom, A is -CH3 or -CF3, r is 0 or 1 and C* is an asymmetric carbon, provided that when A is -CH3, r is 0 and p is an integer of 4 to 10, that when A is -CF3 and when r is 0, p is an integer of 6 to 8, and further that when A is - CF3 and when r is 1, q is an integer of 5 to 8 and p is 2 or 4. The present invention provides a novel phenyl triester compound, an anti-ferroelectric liquid crystal composition comprising the above phenyl triester compound is not only improved in response speed but also shows remarkably controlled layer rotation, and it can achieve a simple matrix liquid crystal display device which is free of a change in contrast and is highly reliable in use for a long period of time. |
