Influence of Sustain Pulse-Width on Electrical Characteristics and Luminous Efficiency in Surface Discharge of AC-PDP (情報ディスプレイ--The 6th Asian Symposium on Information Display & Exhibition)

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Influences of sustain pulse-width on electrical characteristrics and luminous efficiency are experimentally investigated for surface discharge of AC-PDP. A square pulse with variable duty ratio and fixed rising time of 300 ns has been used in the experiment. It is found that the firing voltage is decreased as the pulse-width is increased from 1 μs to 5 μs with sweeping frequency range of 10 kHz to 180 kHz. It is also found that the memory coefficient is significantly increased at the critical pulse-width. And the wall charges and wall voltages as well as capacitances are experimentally measured by Q-V analysis method we suggested[1], in terms of the sustain pulse-width in the range of 1 μs to 5 μs under driving frequency of 10 kKz to 180 kHz. And the luminous efficiency is also experimentally investigated in above range of sustain pulse-width with driving frequency of 10 kHz to 180 kHz. It is noted that the luminous efficiency for 10 kHz is much less than that for180kHz are 1.29lm/W and 0.68 lm/W respectivery, since the power consumption for 10 kHz is much less than that for 180 kHz. It has been concluded that the optimal sustain pulse-widgh is in the range of 2.5 〜 4.5 μs under driving frequency range of 10 kHz and 60 kHz, and in the range of 1.5 〜 2.5 μs under driving frequency range of 120 kHz and 180 kHz based on observation of memory coefficient, wall charge, and wall voltage as well as luminous efficiency.
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2000-10-20

Influence of Sustain Pulse-Width on Electrical Characteristics and Luminous Efficiency in Surface Discharge of AC-PDP (情報ディスプレイ--The 6th Asian Symposium on Information Display & Exhibition)

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