| 摘要 |
<p>A ferroelectic smectic C liquid crystal mixture and a display element having a quick electrooptical response and a good memory property are provided, the ferroelectric mixture having a Ps of 60 nC/cm2 or more and a tilt angle of 24 DEG or more and comprising (A) a first component comprising at least one optically active compound expressed by the formula <CHEM> wherein l and m are 0 or 1, both are not 1; n is an integer of 3 to 8; X and Y are H, F, C l , or CN, both X and Y are not H; A is -COO- or -OCO-; and R is C3-18 alkyl or alkoxy, and (B) a second component comprising at least one optically active compound expressed by the formula <CHEM> wherein l , m, n and R are as defined above; and A is -COO-, -OCO-, -CH2O- or -OCH2-, a total content of the first and second components being 60 mol% or more in the mixture.</p> |
