Patent ID: 8416155

Claim:
A plasma display device comprising: a plasma display panel having at a front substrate side: pluralities of scan electrodes and sustain electrodes extending in a first direction; a first dielectric layer covering the scan and sustain electrodes; and a protective layer covering the first dielectric layer, and having at a rear substrate side: a plurality of address electrodes extending in a second direction intersecting the first direction; a second dielectric layer covering the address electrodes; barrier ribs at both sides of the address electrode; and a phosphor between the barrier ribs, wherein the front substrate side and the rear substrate side are combined, so that cells are configured in a matrix corresponding to intersections of the scan electrodes and sustain electrodes and the address electrodes; driving circuits which apply a voltage waveform for driving to the respective pluralities of scan electrodes, sustain electrodes, and address electrodes; and a control circuit which controls the voltage waveform, wherein: in drive control of a display area of the display panel, there are provided: a reset period for generating a discharge for forming and adjusting charges to the cell; an address period for performing a discharge for selecting a target On cell; and a sustain period for performing a discharge for display by applying a sustain pulse at the selected cell, a first voltage waveform having a rising slope and a second voltage waveform having a falling slope are applied to the electrodes of the plasma display panel in the reset period, a slope of one of the first voltage waveform and the second voltage waveform from a start of application of the one voltage waveform to a first predetermined timing is a first slope, and a slope of the one voltage waveform from the first predetermined timing to an end of application of the one voltage waveform is a second slope, and the second slope is steeper while an accumulated operation time from a start of using the plasma display panel of the plasma display device is from zero to a first time than after the first time.