| 摘要 |
PURPOSE:To obtain the excellent liquid crystal electrooptical element which has a good memory effect by a bistable uniform orientation and is less degraded in contrast by an orientation defect by using the ferroelectric liquid crystal expressed by specific formula by the reforming of substrate surfaces and the orientation control by an electric field treatment. CONSTITUTION:Films 9, 10 consisting of a silane-coupling agent are formed on a pair of glass substrates 1, 2 provided with transparent electrodes 4, 5 consisting of ITO and insulating films 7, 8 consisting of SiO2 and the surfaces thereof are subjected to a rubbing treatment. The silane-coupling agent is a coupling agent having at least one of an amino group, methyl amino group, epoxy group, and mercapto group as a functional group or the mixture composed thereof. A ferroelectric liquid crystal 6 contg. at least one component of the compd. expressed by formula is sealed between a pair of the substrates 1 ad 2 formed in such a manner and thereafter, an electric field is impressed between the electrodes 4 and 5, by which the uniform state having the dense stripe-shaped structure in the direction nearly perpendicularly in the layer direction is exhibited in the orientation state of the liquid crystal 6 and the zigzag defects are removed. |
