Linear nano carbon tube composite-field emission source and method for preparing same and dedicated device therefor

The invention discloses a linear nanometer carbon pipe composite field launching source and making method and specific device, which contains a conductive fiber weaving line substrate with single wall or multiple-wall nanometer carbon pipe film deposited on the substrate. The making method comprises the following steps: predisposing the surface of fiber weaving line; utilizing self-power pyrolytic CVD method grow single-wall or multiple-wall nanometer carbon pipe on the fiber weaving fiber. The length of composite field launching source is not limited, which produces linear pattern product. The device is fit for pipe-typed nanometer carbon pipe field launching luminous bulb, which can observe the field emitting condition.