A Planer Electron Source for Application to Flat Panel Display

Abstract

A planer electron source has been studied for application to flat panel displays. For the electron source, oxide cathode filaments were used and two types of electrodes besides the filament were investigated for diverging electron flow. One was a projected crease-shaped electrode above which the filament is placed leaving a narrow space and the other was a cylindrical mesh electrode in which the filament was centered.
Uniform planer electron flows in the two types of electrodes were shown under optimum driving conditions. A flat panel display with a fluorescent screen addressed by 10×10 matrix elements was constructed. Using this display, it was shown that these cathodes can adequately be applied to flat panel displays.