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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,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.
Electromagnetic theory is used to establish a reasonable electrical physical model for a single sub-pixel of a surface-conduction electron-emitter display device in a Cartesian coordinate system. The internal electric field strength and potential are further studied. The surface charge density, electric field In order to vividly characterize its electrical characteristics, the distribution of electric field strength and electric potential is simulated by MATLAB 6.5, and a reasonable explanation of the simulated surface is given theoretically. It is analyzed that the internal electrons And compared with the electronic multi-scattering model and the inertial centrifugal model to explain the important reasons for the formation of SED anode current.The conclusions of the model about the distribution of electric field intensity and the inertial centrifugal model Consistent.