为了解决二极结构FED驱动电压高的问题，设计制作了后栅式三极结构纳米ZnO场致发射显示器，进行了场致发射实验，验证这种结构的可行性。采用丝网印刷厚膜技术实现后栅极结构FED的制作，工艺简单，实现了较低电压的调制。对影响场致发射性能的栅极电压、阳极电压进行了分析讨论。将阴栅极板和荧光屏封装成5英寸三极结构的场致发射显示器，实现了稳定的场致电子发光显示。

The diode FED has high driving voltage,which brings trouble to driving circuit.In order to solve this problem,under-gate triode structure tetrapod-like nano-material ZnO FED is design.The field emission property is investigated.The results show that the structure is feasible.The production process of under-gate structure is simple,which achieved mainly using screen-printed thick film technology.The structure can achieve a lower voltage control.The gate voltage and the anode voltage parameters that could influence the performance of triode FED are analyzed and discussed.The cathode-gate panel on which is printed with tetrapod-like nano-material ZnO and the fluorescence panel on which is printed with phosphor power as a 5 inch field emission display of triode structure are packed.Stable field emission and shine are realized.