A new driving waveform for improving luminous efficiency in AC PDP with large sustain gap under high Xe content

In the current paper, a new driving waveform is designed based on Vt close curve analysis and proposed to improve the luminous efficiency of AC plasma display panel with a large sustain gap (400 μm) structure under a high Xe (15%) gas mixture. Due to the large sustain gap structure, the reset waveform was modified based on Vt close curve to produce the surface discharge between the scan and sustain electrodes with a negative bias voltage on X electrode while the rising-ramp waveform was applied on Y electrode. In addition, the sustain waveform is designed to produce the face trigger discharge between one of the sustain electrodes and an address electrode, and the main sustain discharge between the two sustain electrodes successfully, when applying the negative sustain pulse to one sustain electrode during the application of the positive sustain pulse to the other sustain electrode, thus resulting in producing an efficient discharge by accumulating the wall charges uniformly among the three electrodes. As a result of adopting the proposed driving waveform, the luminance of 330 cd/m² and luminous efficiency of 4.5 lm/W under the sustain voltage of 210 V and the trigger voltage of - 160 V were obtained in the 6-inch PDP with green phosphors under a large sustain gap (400 μm) and a high Xe (15%) gas mixture.