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The Vacuum Fluorescent Display (VFD) is widely accepted as a superior display device because of it's self luminance and excellent readability. A reconfigurable graphic VFD consisting of 128 X 32 dots, with high luminance, has been developed. It is suitable as a multi function automotive message display. To realize a high luminance and reliable graphic VFD, the improved phosphor material, mechanical construction and driving condition have been studied. This paper discusses these considerations to achieve high luminance.

Vacuum Fluorescent Displays (VFDs) which can be directly driven at battery voltage have proven their suitability in automotive applications. In addition to green emitting phosphor, other phosphors such as yellowish orange, greenish yellow and most recently reddish orange have been developed to operate at vehicle battery voltage. These phosphors are now readable under direct sunlight conditions. This paper presents the recent technical improvements that were accomplished to add reddish orange to the list of battery voltage phosphors.