ＡＣ型ＰＤＰにおける自己消去放電特性

Abstract

Because electrodes in AC-PDPs are covered with a layer of dielectric, panels are driven by using a wall charge. The driving sequence of an AC-PDP can be divided into three periods, “an addressing period” “a sustained-discharge period” and “an erasing period”. These periods are related to each other. For example, the erasing period needs not only an erasing movement but also a consistent addressing movement. In one of such erasing discharges, there is a self-erase discharge. A self-erase discharge is a result of applying a high voltage. However, because high voltage generates low contrast, low voltage should be used to generate self-erase discharges. In this paper, we investigate the movement of a wall charge during an erase pulse. First, we examine the relationship between an erase margin and erase-pulse conditions. Next, we investigate a residual wall charge after an erase pulse by measuring the voltage stored in the measurement capacitor. We conclude that a self-erase discharge is good for address movements because resident wall charges don't change with changes in the pulse width and applied voltages. We also describe the conditions under which a self-erase discharge can be easily generated.