Abstract: |
A method for preparing field emission display device for solving beam divergence, which contains 1, distributing carbon nano tube the conductive cathode layer on insulated substrate, 2, forming in quadrature insulation layer on conductive cathode layer, 3, forming conductive grid on said insulation layer, 4, vertically standing the carbon nano tube on the conductive cathode layer, 5, packaging fluorescent screen and sealing side wall, said grid has double action of emitting and focusing electron to emitting electron and controlling electron emission direction. |