What is Cold Cathode Fluorescent Lamp (CCFL)

Horace He

Last Updated: August 28, 2023

What is Cold Cathode Fluorescent Lamp (CCFL)

A Cold Cathode Fluorescent Lamp (CCFL) is a type of lighting technology commonly used in older televisions, monitors, and various lighting applications. It consists of a sealed glass tube filled with inert gases. When a high voltage is applied to the tube, the gases inside ionize, producing ultraviolet (UV) light. This UV light then interacts with a phosphor coating on the inside of the tube, causing it to emit visible light.

CCFLs are known for their long lifespan, typically lasting over 50,000 hours, making them a durable and reliable lighting solution. They are also energy-efficient compared to older incandescent lamps, making them popular for backlighting LCD screens. CCFL technology has been largely replaced by Light Emitting Diode (LED) technology in recent years. LED backlighting offers advantages such as improved energy efficiency, thinner form factors, and better color accuracy. However, CCFL technology may still be found in some older devices or specialized applications.

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