浮动电极对PDP单元放电最小维持电压及发光效率的影响

The Influence of Floating Electrodes on Minimum Sustaining Voltage and Luminous Efficiency of PDP Cell Discharge

针对一种带有浮动电极的新型PDP单元结构,采用流体模型系统地研究了浮动电极的宽度、间隙以及浮动电极与显示电极平面之间的介质厚度及其相对介电常数对最小维持电压和发光效率的影响,结果发现(1)采用浮动电极后最小维持电压得到了较大幅度的降低;(2)发光效率高,则最小维持电压也高;(3)通过调整浮动电极的间隙,可以实现较高的发光效率,并且最小维持电压增加较少;(4)浮动电极间隙的效率指数最高(发光效率改变量/最小维持电压改变量),而浮动电极与显示电极平面之间介质厚度的效率指数最低。

For a new type of PDP cell with floating electrodes and long gap between display electrodes, the influence of floating electrodes width and their gap, the dielectric layer thickness between the planes of display electrodes and floating electrodes and its permittivity on the minimum sustaining voltage and the luminous efficiency is studied by fluid simulation method. It is found that (1) the minimum sustaining voltage are decreased considerably after using the floating electrodes, (2) the higher the luminous efficiency, the higher the minimum sustaining voltage, (3) by adjusting the gap between floating electrodes, one could obtain high luminous efficiency and the minimum sustaining voltage does not increase greatly, and (4) the efficiency index (variation of luminous efficiency divided by the variation of minimum sustaining voltage) for floating electrodes gap is the highest and the efficiency index for the dielectric layer thickness between the planes of display electrodes and floating electrodes is the lowest.