Improvement in luminance, luminous efficiency, driving margin, and operational lifetime of HD PDPs by using discharge deactivation film

We have improved our 116-cm HD PDP in many respects by using DDF formed on MgO around the display line boundaries. The DDF allows an extremely narrow inter-pixel gap even for a stripe-rib structure because it prohibits vertical crosstalk discharge. The DDF combined with a stripe-rib structure results in the best address discharge response. Thus, a very wide driving margin area is achieved, allowing for a high percentage of Xe. The preferable sustain electrode shape follows the CAPABLE DDF style, where the principal discharge portion is separated from the bus via a slim bridge. This cell configuration proved to be excellent in operational life testing with respect to DDF as well as in manufacturing process margin. By employing both a thinner dielectric layer and a TiO2 reflective underlayer for phosphor, the address response is further improved so that Xe15% vol. is available from the viewpoint of the driving margin. Thus, we achieved a white peak luminance of 1220 cd/m(2) and a luminous efficiency of 2.16 Im/W simultaneously despite of an applied sustain voltage as low as 185 V. We foresee that they will be soon as high as 1400 cd/m(2) and 2.5 Im/W by modifying the sustain electrode style.