CCFL stands for Cold Cathode Fluorescent Lamp, a type of lighting technology commonly used in various applications. Unlike traditional incandescent bulbs, CCFLs use a gas-filled tube that emits ultraviolet light when an electric current passes through it. This UV light then excites a phosphor coating inside the tube, producing visible light. CCFLs are known for their energy efficiency and longer lifespan compared to incandescent bulbs. These lamps are often found in LCD screens, backlighting for monitors, and some neon signs. While they have been largely replaced by LED technology in many areas due to improved efficiency and reduced size, CCFLs still serve specific purposes where their unique properties are beneficial.