Mechanism of high luminous efficient discharges with high pressure and high Xe-content in AC PDP
ABSTRACT The mechanism of high luminous efficiency discharges with high Xe content in an AC plasma display panel was analyzed by computer simulation using a two-dimensional fluid model. The model has reproduced well the experimental results. The high luminous efficiency with high Xe content is attributed to high electron heating efficiency as well as high excitation efficiency by electron. The electron heating efficiency is increased with increasing the sustaining voltage under high Xe content and this phenomenon was analyzed by investigating the cathode sheath and secondary electron emission characteristics.
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ABSTRACT: A new ac plasma display panel (PDP) for high luminous efficacy is proposed, and its characteristics are investigated. The new ac PDP has a coplanar gap of 200 mum and an auxiliary electrode located between the scan and common electrodes. The periodic pulses are applied to the auxiliary electrode during the sustain period, which plays the roles of enhancing the infrared emission and reducing the discharge current. The sustain voltage decreases with the increase of the auxiliary pulse voltage until 80 V. When the voltage of the pulse applied to the auxiliary electrode is 50 V, the luminous efficacy reaches its peak value and is approximately 8.7 lm/W obtained from the measurement of Ne + 20% Xe gas-mixture discharges in the green cells. The luminous efficacy of the new proposed test ac PDP with Ne + 13% Xe and Ne + 20% Xe gas mixtures is improved by 190% and 320%, respectively, compared to that of the conventional ac PDP with a Ne + 13% Xe gas mixtureIEEE Transactions on Electron Devices 03/2007; · 2.32 Impact Factor
Article: The Effect of the Auxiliary Electrode on the Microplasma Generated in a Plasma Display With a Coplanar Gap[show abstract] [hide abstract]
ABSTRACT: The microplasma modes generated in a plasma display with a coplanar gap and an auxiliary electrode were investigated using the discharge current peak time (discharge delay) and discharge current. Three types of modes were classified as follows: mode 1) showed a decrease in both the discharge current and the discharge delay, mode 2) showed a decrease in the discharge current and an increase in the discharge delay, and mode 3) showed an increase in the discharge current and a decrease in the discharge delay. The infrared efficiency increased in modes 1) and 2) with an increase in the auxiliary pulse voltage. However, in mode 3), the IR efficiency started to decrease. According to the measurement results, modes 1) and 2) are suitable for microplasma generated in a coplanar gap with an auxiliary electrode to obtain high efficacy.IEEE Transactions on Plasma Science 07/2007; · 1.17 Impact Factor
Article: Improvement of picture quality of high Xe content plasma display panels based on facing discharge suppression[show abstract] [hide abstract]
ABSTRACT: This paper presents a waveform for driving a high-resolution plasma display panel (PDP) which uses a gas mixture of high Xe con-tent. To prevent degradation of picture quality due to unstable discharges between two facing electrodes, the common electrode was biased at a negative voltage during the set-up period, and the data electrode was biased at a positive voltage during the sustain period. A pre-reset pulse was used before the first reset to reduce the reset voltage and to form a proper wall charge state for sustain discharges. This waveform could drive a 15% Xe 42 in. XGA (1024 · 768) PDP with the single-scan method. The measured black luminescence, peak luminescence, and contrast ratio were 0.45, 1490 cd/m 2 , and 3310:1, respectively. The measured margin of the sustain voltage was better than ±10 V.05/2007;