ELECTRON EMISSION MATERIAL, AND COLD CATHODE ELECTRON SOURCE USING THE ELECTRON EMISSION MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide an electron emission material which can obtain stable electron emission properties at high reproducibility and is used for an electric field emission type flat panel display (FED), an electric field emission type lamp (FEL) or the like.

SOLUTION: The electron emission material uses metal oxides such as titanium oxide having anisotropic grain shape, and the frequency distribution of the major axis diameter of the anisotropic metal oxides has a plurality of maximum values. Concretely, at least two or more kinds of anisotropic metal oxides having different average major axis diameters are mixedly used.

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