Vacuum Fluorescent Display (VFD) : Commonly Used Electronics Display

Vacuum Fluorescent Display or VFD is very commonly used Display on Consumer Electronics Segment and Car Dashboard. Vacuum Fluorescent Display is based on lighting of certain materials. If you are wondering what is this Vacuum Fluorescent Display is – it is those bright colorful typical display on your Car’s Stereo or Music System. Previously we published an article on Calculators, the older calculators used same Vacuum Fluorescent Display.

Technology of Vacuum Fluorescent Display

Vacuum fluorescent display has a transparent glass panel and a rear base plate, which is usually also made ​​of glass. The plates are on the edge soldered or glued together, the intermediate display system is in a high vacuum. Before the anode of Vacuum Fluorescent Display a thin, coated with oxide filament emits the thermal electrons when voltage is applied to the anode segments. Directly in front of the Vacuum Fluorescent Display anode segment there is a grid attached to the controlled flow of electrons and the electrons can be rejected like triode. Recently there is also Chip In Glass displays in the display tube with integrated driver ICs to reduce the number of connecting wires.

Usage of Vacuum Fluorescent Display

Although Vacuum Fluorescent Display is one of the most commonly used bright display, most common users are not used with the technical terminology. Currently, there are color displays with up to nine different colors, the most common is blue-green color which has the advantage of high light output. Advantage of Vacuum Fluorescent Display in comparison to liquid crystal displays are a high luminance without the need of back-light.

A car’s dashboard panel is the best example of usage of Vacuum Fluorescent Display. The reason of existence of Vacuum Fluorescent Display is high reliability and relatively long lifetime. With emergence of other technologies, the usage of Vacuum Fluorescent Display has been reduced than it was in 1980, but still it is one of the most commonly seen display on the car.

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