| 摘要 |
A liquid-crystal display element having more than two contrasting colours has a smectic liquid-crystal (5) of positive dielectric anisotropy which is embedded between two cover plates (1, 2). The liquid-crystal molecules assume a parallel homogeneous alignment with a very large rotational angle. This rotational angle can be continuously increased by increasing an applied AC potential, as a result of which Newton colours appear during observation due to crossed polarisers. <IMAGE>
|
