Characteristics of a high Xe-concentration 4-inch PDP G. Oversluizen, S. de Zwart, T. Dekker , T. Juestel, and S. van Heusden Philips Research Laboratories, Eindhoven, The Netherlands E-mail: gerrit.oversluizen@philips.com siebe.de.zwart@philips.com syb.van.heusden@philips.com tim.dekker@philips.com thomas.juestel@philips.com Keywords Plasma display panel, luminance, efficacy Abstract The performance of two 4-inch color PDP test panels with a default and a high Xe- concentration gas mixture is discussed. The default panel with a gas mixture of 3.5% Xe in Ne and a filling pressure of 650 hPa is compared with a panel containing a gas mixture of 13.5% Xe in Ne and a filling pressure of 800 hPa. The panels contain a green phosphor, YBO 3 :Tb, which shows less saturation at high UV-load in comparison with Willemite. The panel performance is compared in addressed conditions. For the default panel a white luminance of 710 cd/m 2 and an efficacy of 1.6 lm/W is found, and for the high Xe-partial-pressure panel a white luminance of 2010 cd/m 2 and an efficacy of 3.8 lm/W is realized. The increase of the driving voltages for high Xe partial pressure, about 20-30 V, is moderate. Finally, color saturation is improved at high Xe-partial-pressure.