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Improvement of Luminance and Luminous Efficacy in Mid-gap AC Plasma Display Panels  

Choi, Nak-Won (인천대 공대 전자공학과)
Min, Chung-Sik (인천대 공대 전자공학과)
Jeong, Dong-Cheol (호서대 디스플레이공학부)
Seo, Jeong-Hyun (인천대 공대 전자공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.58, no.5, 2009 , pp. 982-988 More about this Journal
Abstract
In a surface type ac PDP having $200{\mu}m$ gap between the surface electrodes, the luminous efficacy has a reciprocal dependence on the sustaining frequency. The discharge current flowing to the address electrodes are measured to investigate the phenomena and spectral intensity from visible light to infra red is measured to verify phosphor saturation with the frequency. Experiments show the discharge between the address and surface electrodes deteriorates the efficacy in high sustaining frequencies. Pulse width modulation is introduced to improve the efficacy. In optimum conditions, we obtained 1.99lm/w and 1.79lm/w at 200kHz and 250kHz, respectively.
Keywords
Mid-Gap; Surface Discharge; PDP;
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