| 摘要 |
The present investigation relate to an electron emission device which is composed by an insulated board in which a cathode electrode, an electron emission film, a gate insulation film, and a gate electrode were arranged, and an anode electrode estranged above said insulated board, and characterized by that an electron emission film is exposed to a bottom of an emitter hole provided in said gate insulation film on said insulated board, and an electron emission film in a part for an emitter hole central part being in a low position rather than an electron emission film of an emitter hole deep pool contiguity portion.
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