本研究探索了一种电泳选域组装碳纳米管发射器到正栅极结构的衬底中作为三极管结构的场发射显示阴极的工艺。在这个工艺中,悬浊液中的碳纳米管在施加于栅极电极和阴极电极的电压的作用下移向并淀积到三极管结构的衬底中。同时,这个栅极电极的正电压能够排斥悬浊的碳纳米管,使栅极电极不吸附碳纳米管。实验结果表明,碳纳米管选域组装到栅极孔洞中去,并且每一个孔洞中碳纳米管具有相同的组装密度。该工艺成本低、可实现大面积阴极的制备,是一种在制备三极管型碳纳米管场发射显示阴极中可供选择的工艺。 This study explored a process of electrophoretic selective field assembly of carbon nanotube emitters into a positive gate structure substrate as a field emission display cathode for a triode structure. In this process, the carbon nanotubes in the suspension migrate to and deposit into the substrate of the triode structure under the voltage applied to the gate and cathode electrodes. At the same time, the positive voltage of the gate electrode can repel the suspended carbon nanotubes so that the gate electrode does not adsorb the carbon nanotubes. The experimental results show that the carbon nanotubes are assembled into the gate holes, and the carbon nanotubes in each hole have the same packing density. The process has the advantages of low cost and large area cathode preparation, and is an alternative process for preparing a cathode of a triode type carbon nanotube field emission display.