Matrix-addressed liquid-crystal display

In order to develop simple low-cost liquid-crystal matrix displays, 5 × 7 dots alphanumeric matrix display panels with 7 × 80 elements have been made and tested. A newly synthesized nematic liquid crystal, p-methoxy-p´-ethylazoxybenzene, was used in the panels as the major component of the liquid crystals. The crosstalk was found effectively suppressed by rubbing the surfaces of electrode glasses besides applying a blanking technique. Furthermore, storage-type liquid-crystal matrix display devices with 120 × 120 elements were also reported. Various mixtures of nematic and cholesteric liquid crystals were used depending upon the storage and erasing conditions required for the imaging.