| 摘要 |
an anode with a phosphor coated thereon is formed in a predetermined pattern on a lower glass substrate; a segment electrode is disposed spaced upward apart from the anode; a cathode filament is installed along the inner surface of a spacer surrounding the lower glass substrate; a transparent conductive layer to which a negative potential is applied is formed on the inner surface of the upper glass substrate opposite the lower glass substrate; and another transparent conductive layer to which a negative potential is applied is formed near the cathode filament in a non-display region of the anode so that thermions emitted from the cathode filament is induced toward the segment electrode, thereby facilitating the installation of the cathode filament.
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