How CCFL Backlighting Works in LCDs
Backlighting is a necessary component of all liquid-crystal displays (LCDs). The pixels within LCDs aren't capable of illuminating themselves. While there are some LCDs that do feature self-illuminating pixels, LCDs aren't one of them. Instead, they require a backlighting system to illuminate their pixels. You can find LCDs with different types of backlighting, one of the most common is cold-cathode fluorescent (CCFL). What is CCFL backlighting exactly, and how does it work in LCDs?
The Basics of CCFL Backlighting
CCFL backlighting is a lighting system that, as the name suggests, uses cathode to produce light. It still generates some heat as a byproduct. It's called "cold cathode fluorescent lighting" because the cathodes within it emit more electrons than that which can be supplied in thermal emissions alone.
Technical jargon aside, CCFL backlighting consists of small bulbs that are used to illuminate a display device. CCFL backlighting is commonly found in LCDs. LCDs are display devices that are characterized by the use of liquid pixels. These pixels must be illuminated. Otherwise, they won't produce visible images. CCFL backlighting is capable of illuminating the liquid pixels in an LCD, resulting in visible images being projected.
