表面传导电子发射显示器件电学特性研究

Electrical Characteristics of Surface-conduction Electron-emitter Display

利用平板电容器和电磁场理论对表面传导电子发射显示器件的单个子像素在笛卡尔坐标系内建立合适的电学物理模型,并对其内部电场强度和电势进行了深入研究,推导出了模型不同部分的面电荷密度、电场强度和电势的具体表达式;为了形象地表征其电学特性,利用MATLAB6.5对电场强度和电势的分布情况进行了模拟,从理论上对模拟曲面给出了合理的解释,分析了子像素内部电子的发射机理和电学行为;最终理论计算和软件模拟印证了所建物理模型在误差允许的范围内是完全正确的。

Surface-conduction Electron-emitter Display is a kind of very promising Flat Panel Displays, following LCD and PDP. It has obvious technical superiorities and excellent display characteristics and is praised as one of the most advanced displays. Using the theories of flat capacitor and electromagnetics, an equivalent physical model of a single pixel is established. The exterior charge densities of different parts of the model are educed, and at the same time the electric potential energy and intensity of its electric field are studied in detail. And then the distributions about the two important electrical parameters are simulated with the help of MATLAB 6.5 Software, a rational analysis of the simulative curving plane is given in theory, and the electrical behavior and emission mechanism are explained comprehensively. Finally, in the error-allowed range the correctness of the physical model is testified by both the theoretical calculation and the software simulation.