page_title: Electroluminescence
hierarchical_section_title: Electroluminescence
caption_attribution_description: English: Backlit LCD display, on and off.
context_page_description: Electroluminescence is an optical phenomenon and electrical phenomenon in which a material emits light in response to the passage of an electric current or to a strong electric field. This is distinct from black body light emission resulting from heat, a chemical reaction, sound, or other mechanical action.
context_section_description: Electroluminescence (EL) is an optical phenomenon and electrical phenomenon in which a material emits light in response to the passage of an electric current or to a strong electric field. This is distinct from black body light emission resulting from heat (incandescence), a chemical reaction (chemiluminescence), sound (sonoluminescence), or other mechanical action (mechanoluminescence).
caption: Views of a liquid crystal display, both with electroluminescent backlight switched on (top) and switched off (bottom)
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