Gi-young Kim

8.2: New Electrode Structure to Improve Discharge Characteristics in AC PDPs

A new structure including igniter electrode is proposed to achieve a low sustaining voltage and high luminous efficacy. By measuring minimum sustaining voltage(Vsm), discharge current(Ion), displacement current(Ioff) and brightness of the light from a 6-inch AC PDP, performances of the conventional structure and the igniter structure are compared. When compared with the conventional structure, the igniter structure showed 10% Vsm improvement at the Ne-Xe(10%) gas mixture of 600 mbar. Therefore, we could apply the higher partial pressure of Ne-Xe(12%) to the igniter structure, which results in 42% luminous efficacy improvement at the similar sustaining voltage range.

25.3: Luminous Efficacy Dependence of Kr2* Excimer ACPDP on Sustain Driving Conditions

Sustain driving conditions for Kr2* excimer ACPDP are investigated with real 6-inch panels. At the optimized driving with 5 kHz, the PDP with a mixture of Kr: Ne = 50:50 (%) shows the efficacy of 1.6 lm/W, which is over 2 times higher than that of the same PDP panel with a conventional mixture (Xe: Ne = 4:96 (%), 0.7 lm/W).

14.4: Plasma Display Panel with Ridged Dielectric Layer between Sustaining Electrodes

This article presents a front panel structure for an alternating current plasma display panel (AC PDP) based on a ridged transparent dielectric layer between the sustaining electrodes. Compared to a conventional AC PDP, the suggested structure can reduce a firing voltage and sustaining voltage due to a strong electric field between the sustaining electrodes. First experiments were conducted to see the effect of ridged dielectric structure in the short electrode gap of 110 μm with various Xe contents from 10% to 50% at a gas pressure of 450 Torr, and the results confirmed that the ridged dielectric structure reduced the firing and sustaining voltages by about 74 and 79 V at 10% Xe content compared to a conventional structure with 10% Xe content, respectively. Also, the proposed structure improved the luminous efficacy and luminance by about 50.9% and 33%, respectively, with 50% Xe content when compared to a conventional structure with 10% Xe content at a similar driving voltage. Second, performances of the conventional structure and the ridged dielectric structure with the electrode gap of 140 μm were compared. Experimental results confirmed that the box shaped ridged dielectric structure could be driven at a lower voltage than conventional AC-PDPs with the same Xe content. Also, the luminous efficacy of box shaped ridged dielectric structure was higher than those of conventional structures.