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摘要: 利用电磁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理的电学物理模型，对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、电场强度和电势的表达式.为了形象地表征其电学特性，利用MATLAB 6.5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，并与电子多重散射模型和惯性离心模型进行了对比，解释了SED阳极电流形成的重要原因.在误差允许的范围内，本模型有关电场强度分布的结论与惯性离心模型一致.
Abstract: The surface-conduction electron-emitter display(SED) based on tunneling effect is a newly developed flat panel display. It has obvious technical advantages and excellent characteristics and is praised as one of the most advanced displays. Based on the theory of electromagnetism, an equivalent physical model of a single pixel of SED is established. In particular, it shows the exterior charge densities in different parts of the pixel. Furthermore, the electric potential and electric field intensity are studied in detail, and their distribution is simulated with the help of MATLAB 6.5 Software. Finally, a theoretical analysis of the simulated curved surface is given, and the electrical behavior as well as the emission mechanism is explained comprehensively. In order to further interpret the behavior of electrons in SED, we compare this model with the multi-scattering model and the inertial centrifugal force model respectively. It is found that within the limits of error our conclusion on electric field distribution is consistent with that of the inertial centrifugal force model.
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