Which technology does a Cold Cathode Fluorescent Lamp (CCFL) use?

A Cold Cathode Fluorescent Lamp (CCFL) uses fluorescent tubes to produce light. This technology functions by applying a voltage across gas in a tube, which generates ultraviolet light when the gas is excited. The ultraviolet light then interacts with a phosphor coating inside the tube, emitting visible light.

CCFL technology is characterized by its efficiency and ability to produce a brighter light than many other options, making it commonly used in older LCD displays and backlights. Unlike alternatives such as LEDs, which use semiconductor technology, CCFL relies on the principles of fluorescence and gas discharge to operate. This distinction is crucial in understanding the specific characteristics and applications of CCFL technology compared to other lighting technologies like incandescent bulbs or fiber optic cables.