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Vacuum Fluorescent Displays

Terminology

VFD: Vacuum Fluorescent Display
LCD: Liquid Crystal Display

Features

VFDs are display devices in which electrons emitted from filaments inside a vacuum triode light up when they contact phosphor-coated plates.
They are highly legible and attractive because of their bright "self-generated" light.
They are also currently easier to obtain and deliver on time than monochrome liquid crystals (LCDs).

Applications

VFDs are suitable for displays in all kinds of fields, including industrial equipment (forklifts, etc.), equipment instrument panels, car audio systems, IT devices, point-of-sale registers, and measurement instruments.

FAQ

How are VFDs different from LCDs?
The basic principle of operation is completely different.
Where with LCDs you see a transmitted beam from the rear light source that hits the electrodes, VFDs look more attractive and are much easier to see because the display is the self-generated light itself.
What are the driving voltages?
The driving voltages depend on the size of the VFD, but generally they range from 12 volts to 70 volts.
How long is the service life?
Generally, the service life is more than 30,000 hours. (VFDs with red and other colored phosphor-coated plates have shorter service lives.)
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