抄録
Display performances are strongly dependent on the physical properties of liquid-crystal (LC) materials used. Focusing on nematic LC materials for uses in practical active-matrix displays, physical properties such as rotational viscosity, optical birefringence and dielectric anisotropy are introduced as well as the understandings of their relation to the molecular structure. Some display performances, which can not be correlated so well to those macroscopic properties of LC materials, can be explained when the attributes and the behaviors of mobile ions contained in the LC materials are understood. It is also introduced that the attributes of those ions are partly correlated to the LC molecular structure.
