Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate
2007-12-04
2007-12-04
Tran, Thuy V. (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
C315S169100, C315S167000, C315S360000, C313S502000, C313S311000
Reexamination Certificate
active
11236422
ABSTRACT:
An electron emitting apparatus includes a lower electrode, an emitter section made of a dielectric material, a plurality of upper electrodes having micro through holes, and a collector electrode opposing the upper electrodes. In this electron-emitting apparatus, electrons are accumulated in the emitter section by controlling the potential difference (drive voltage) between the lower and upper electrodes with respect to the potential of the lower electrode to a negative predetermined voltage. At this time, the collector electrode of the electron-emitting apparatus is grounded. Thus, unnecessary electron-emitting is suppressed. Subsequently, the drive voltage is changed to a positive predetermined voltage. As a result, polarization reversal occurs in the emitter section, and accumulated electros are emitted through the micro through holes in the upper electrodes by Coulomb repulsion. At this time, a positive voltage Vc is applied to the collector electrode to give large energy to accelerate the electrons.
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Akao Takayoshi
Kameji Tetsuyuki
Nakamura Hirokazu
Ohwada Iwao
Burr & Brown
Le Tung X
NGK Insulators Ltd.
Tran Thuy V.
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