Patent ID: 7208866

Claim:
A field emission display device, which comprises: a cathode emitter unit, for providing primary emission of electrons; an electron amplification unit, disposed upon the cathode emitter unit, to generate electron amplification effect of the primary emission of electrons and support the field emission display device, the electron amplification unit comprises: at least two insulating layers and an electrode layer, the electrode layer is a metal thin film with a plurality of apertures and is placed between the insulating layers, a surface of the electrode layer is provided with an electron amplification material, the insulating layers are provided for electrical insulation; a faceplate unit, which comprises; an upper electrode layer, which is made of a transparent conductive material and is disposed upon the electron amplification unit, a lower surface of the upper electrode layer is provided with a light emissive layer; and a transparent faceplate, which is disposed upon the upper electrode layer; and a power supply and image display circuit unit, providing the power source of the field emission display device and controlling image display of the field emission display device; when the cathode emitter unit, the electrode layer and the upper electrode layer are biased by the power supply and image display circuit unit, the primary emission of electrons from the cathode emitter unit move toward the faceplate unit, whereby secondary emissions of electrons are produced when the electron amplification material of the electrode layer is bombarded by the primary emission of electrons, the secondary emissions of electrons pass through the aperture and bombard the light emissive layer, to make the light emissive layer emit fluorescence, the fluorescence is emitted through the transparent faceplate for viewing; wherein the insulating layers are composed of a plurality of insulating pillars.