Spatial distribution of wall charge density in AC plasma display panels

Experimental results are given for the spatial and temporal variation of both the wall charge density and the light intensity along the electrode lines of an ac plasma display panel. The results show that the major part of the luminous spreading is along the cathode line, and it does not accurately reflect the spreading of the wall charge. The wall charge density distribution is approximately symmetrical along both the cathode and anode lines, and it is fairly constant up to about a linewidth away from the edge of the electrode line. A qualitative explanation is proposed for this extended uniformity of the spatial profile of the density of wall charge.