Abstract
The He-Ne-Xe plasma is produced in the micro-discharge cell of an alternate current plasma display panel (AC-PDP) provided that the gap voltage is greater than the breakdown voltage of the He-Ne-Xe gas. In general, the luminance from the micro-discharge cell with the He-Ne-Xe gas mixture is proportional to the intensity of the gap voltage. The gap voltage is a sum of the external voltage applied to the sustain electrodes plus a wall voltage induced by the wall charges accumulated in the cell. Accordingly, the gap voltage increases if either the external voltage or the wall voltage increases. Thus, if the discharge is repeated only one or two times, the luminance can be varied depending on the various wall voltages even if the external voltage remains constant. This means that the different initial wall charges can make the different luminance levels even under the constant external voltage condition in the PDP cell. However, it is also found that if the discharge is repeated so many times, the multi-luminance phenomenon is wiped out irrespective of the different initial wall charge conditions at the constant external voltage. This phenomenon can be explained briefly as follows. In the initial discharge, the strong discharge due to the high initial wall voltage produces many charged particles. Nonetheless, since the external voltage remains constant, the amount of the wall charges accumulated in the subsequent discharge is not identical to that of the initial wall charges regardless of the many charged particles produced in the prior discharge. In the current paper, the luminance levels are measured based on the variation in the initial wall charge at the constant sustain pulse condition in the AC-PDP cell. The variation in the luminance are also measured at two different initial wall charges as a function of the number of the sustain pulse. As a result, it is observed that the luminance levels can be varied under the same sustain pulse within one or two in the case of the different initial wall charge conditions. This kind of multi-luminance is quite useful for removing the low gray level contour, which is one of the critical issues regarding the realization of a high image quality of the AC-PDP.
| Original language | English |
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| Pages (from-to) | 136 |
| Number of pages | 1 |
| Journal | IEEE International Conference on Plasma Science |
| State | Published - 2003 |
| Event | 2003 IEEE International Conference on Plasma Science - Jeju, Korea, Republic of Duration: 2 Jun 2003 → 5 Jun 2003 |