ELECTROLUMINESCENT (EL) DISPLAY is a type of backlit display which is best for producing uniform light over a large area.
Lighting is created by sandwiching a layer of electroluminescent material between two layers of conductors. When the current flows, the layer of material emits radiation in the form of visible light. EL works by exciting atoms by passing an electric current through them causing them to emit photons. The light color emitted can be changed by varying the material being excited. APEM integrates thin film EL components into membrane switches and stainless steel keypads.
EL Backlighting Benefits
Multiple colors available