DEVICE INCLUDING CARBON NANO-TUBE, DEVICE INCLUDING FIELD EMISSION STRUCTURE, AND ITS MANUFACTURE

摘要

PROBLEM TO BE SOLVED: To provide adhesiveness and a stable structure, and to relatively facilitate manufacture, by projecting at least a part of nano-tubes from the surface of a composite material and setting average projection two times higher than the average diameter of the nano-tube in the composite material. SOLUTION: Carbon nano-tubes 10 and conductive metal powder 12 are prepared, and are actually mixed as uniform as possible, and an obtained composite material is pressed into a green compact 14. An ingot is cut in parallel with an intended emitter surface, or a composite material layer is polished and removed from an ingot surface to expose many nano-tubes 16. A metal layer is removed with edges from the surface of the cut ingot 17 to provide many projecting nano-tubes 16. In this case, length of the projections is two times longer than an average diameter of the nano-tubes, and more preferably 10 times longer than the average diameter.