| 摘要 |
There is described a liquid crystalline mixture for electro-optical devices which are operated according to the two-frequency matrix addressing procedure. The mixture consists of three components A, B and C, each of which contains one or more compounds. Component A has a viscosity of at most about 40 cp, a clearing point of at least about 40 DEG C. and a dielectric anisotropy between about -2 and about +1. Component B has a dielectric anisotropy below about -2 and component C has a dielectric anisotropy above about +10, a clearing point of at least about 100 DEG C. and there is a cross-over frequency in the total mixture of at most about 15 kHz at 20 DEG C. Novel compounds for such mixtures and their manufacture and use are also described. The novel mixtures make possible especially high multiplex rates and short response times.
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