Illumination of the liquid crystal display located behind it by an electroluminescent display
Car dashboard backlight with electroluminescent display
Electroluminescent display ( ELD ) is a type of display made up of a layer of electroluminescent material consisting of specially treated crystals of phosphorus or GaAs between two layers of a conductor (between a thin aluminum electrode and a transparent electrode). When an alternating voltage is connected to the conductors, the electroluminescent material begins to glow.
Application
The ELD display is used in military, medical and industrial equipment where high brightness, refresh rate and reliability are required.