Patent ID: 8450920

Claim:
A field emission electronic device comprising: an insulating substrate having a surface; a plurality of row electrodes located on the surface of the insulating substrate, spaced apart from and parallel to each other; a plurality of cathode emitters located on the plurality of row electrodes and arranged in an array, each of the cathode emitters comprising at least one electron emitter, the at least one electron emitter comprising a carbon nanotube pipe, the carbon nanotube pipe having a first end, a second end and a main body connecting the first end and the second end; wherein the first end is electrically connected to one of the row electrodes, the second end comprises a plurality of carbon nanotube peaks; an insulating layer located on the surface of the insulating substrate, wherein the insulating layer covers a portion of the plurality of row electrodes; a plurality of line electrodes located on the insulating layer, spaced apart from and parallel to each other, wherein the plurality of line electrodes is perpendicular to and cross the plurality of row electrodes; and an anode device comprising an anode substrate, an anode electrode and a plurality of fluorescent layers, wherein the plurality of fluorescent layers corresponds to the intersections of the plurality of row electrodes and the plurality of line electrodes.