平面型场发射显示器的自聚焦效应  

Self-focusing Effect of Flat Cathode in FED

作　　者：黄静华[1] 李德杰[1] 等 

机构地区：[1]清华大学电子工程系，北京100084

出　　处：《微细加工技术》2002年第2期75-80,共6页Microfabrication Technology

摘　　要：用有限差分法分析了平面型场发射显示器中的电场分布 ,给出了发射电子的运动轨迹 ,证明了在薄膜结构的平面阴极器件中存在自聚焦效应。聚焦效果取决于上电极宽度、上电极电压、阳极电压、以及阳极和上电极的间距。由于电子束的自聚焦作用 ,上电极和阳极的间距可以加大 ,因此可以使用CRT高压荧光粉 ,这是平面器件与微尖型器件相比具有的优点之一。The finite difference technique is used to simulate the electric field and the electron trajectories in a field-emission display device (FED) with flat form cathode. The self-focusing effect in the device is also proven, which depends on the upper electrode width, upper electrode potential, anode potential and anode upper electrode gap. It is found that the flat form cathode has considerable advantages over micro-tip cathode in the aspect of beam self-focusing. This allows a large distance between the upper electerode and the anode,as a result, the practical use of high voltage CRT phosphor.

关 键 词：场发射 电子束聚焦 平面显示器 电场 CRT 

分 类 号：TN873[电子电信—信息与通信工程] TN141