×
Electroluminescence (EL) is an optical and electrical phenomenon where a material emits light in response to electric current or a strong electric field.
The demand for innovative lighting technology has led to the development of Electroluminescent Lamps. These can be created by screen printing EL inks onto plastic sheets, forming illuminated panels that are thin, lightweight, flexible, vibrant, impact-resistant, and energy-efficient.
An EL lamp functions as a parallel-plate "lossy capacitor," with the phosphor embedded in a dielectric layer. Applying AC voltage across the plates generates an electric field that causes the phosphor to emit light.
EL lamps consist of various screen-printed thick-film layers, require 60–250V AC, and operate at 50–1000 Hz. Higher voltage and frequency increase brightness but reduce lifespan.
