Patent ID: 7780495

Claim:
A method for fabricating a field emission lamp, the method comprising the steps of: (a) providing a transparent glass tube, the transparent glass tube comprising at least one conductive wire, a carbon nanotube transparent conductive film, and a fluorescent layer formed on an inner wall of the transparent glass tube; and (b) sealing an anode electrode, a cathode electrode, and a cathode emitter by feedthroughs in the glass tube; wherein the step (a) further includes the substeps of: (a1) coating at least one line of conductive slurry on the inner wall of the glass tube, and drying the line of the conductive slurry to form the conductive wire; (a2) annealing the glass tube in an atmosphere of at least one of nitrogen gas and an inert gas; (a3) forming a layer of carbon nanotube paste on the inner wall of the glass tube formed with the conductive wire, and drying the layer of carbon nanotube paste; (a4) forming the fluorescent layer on the dried layer of carbon nanotube paste; and (a5) baking the glass tube with the layer of carbon nanotube paste and the fluorescent layer at about 320° C. for about 20 minutes in an atmosphere of at least one of nitrogen gas and an inert gas, and cooling down the glass tube to room temperature; wherein the layer of carbon nanotube paste in step (a3) is formed by the substeps of: (a31) vertically arranging the glass tube, sealing a lower end of the glass tube; (a32) providing a carbon nanotube paste, filling the glass tube with the carbon nanotube paste through an upper end thereof; and (a33) unsealing the lower end of the glass tube.