Abstract
The three-electrode microdischarge characteristics of ac-plasma-display panels (PDPs) are analyzed with a wide sustain discharge gap of 180 μ. In particular, the luminous efficiency variation is examined as a parameter of the operating frequency. It is found that the luminous efficiency decreases with an increase in the operating frequency. In other words, a failure discharge mode for luminous efficiency occurs at a high frequency up to 200 kHz, originating from a self-erasing discharge and the space-charge behavior under high sustaining frequency conditions. Thus, based on an analysis of the failure mode of a wide-gap discharge, a new sustain waveform is proposed to improve the luminous efficiency at a high operating frequency. As a result of adopting the proposed sustain waveform, a luminous efficiency of 2.4 lm/W is obtained at a sustain voltage of 170 V in a 42-in high-definition wide-gap 180 μ) PDP.
| Original language | English |
|---|---|
| Pages (from-to) | 1129-1136 |
| Number of pages | 8 |
| Journal | IEEE Transactions on Electron Devices |
| Volume | 55 |
| Issue number | 5 |
| DOIs | |
| State | Published - May 2008 |
Keywords
- Frequency effect
- Luminous efficiency
- Self-erasing discharge
- Wide-sustain-gap 180 μ) structure