| 摘要 |
An electron-emitting apparatus includes an element having a lower electrode, an emitter section composed of a dielectric material, and an upper electrode having a plurality of micro through holes; and a drive voltage applying circuit having a power supply and a circuit that applies a voltage generated by the power supply between the lower electrode and the upper electrode. In order to emit electrons accumulated in the emitter section, the power supply generates a voltage gradually increasing from a first voltage to a second voltage. In order to accumulate electrons in the emitter section, the power supply generates a voltage gradually decreasing from the second voltage to the first voltage. A rapid change in element voltage and excessive element current can thereby be avoided, and unnecessary electron emission can be prevented.
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