Patent ID: 6233028
Filing Date: 2001-05-15
Classification: G02F

Abstract:
A plasma-addressed liquid crystal display device comprising a layer of liquid crystal material, data electrodes coupled to the liquid crystal layer and adapted to receive data voltages for activating portions of the liquid crystal layer, a plurality of elongated plasma channels extending generally transverse to the data electrodes for selectively switching on said liquid crystal portions, a dielectric sheet closing off the plasma channels on the side facing the data electrodes, said plasma channels each comprising spaced elongated cathode and anode plasma electrodes and an ionizable gas filling, the liquid crystal layer being located between the data electrodes and the plasma channels, and having a twist angle between 80 and 120 degrees, and the dielectric anisotropy (.DELTA..epsilon.) lying between 1 and 9 and the dielectric constant perpendicular to the director (.epsilon..perp.) lying between 1.5 and 5, respectively (1.5.ltoreq..epsilon..perp..ltoreq.5; 1 .ltoreq..DELTA..epsilon..ltoreq.9).