CCFL LCDs vs LED LCDs: What's the Difference?
Not all liquid-crystal displays (LCDs) are the same. While they all feature liquid pixels comprised in a separate layer, there are different types of LCDs. Some of them feature cold-cathode fluorescent lamps (CCFLs), for instance, whereas others feature light-emitting diodes (LEDs). CCFL LCDs and LED LCDs are both considered LCD technologies, but they use different types of backlighting. What's the difference between CCFL LCDs and LED LCDs exactly?

What Is a CCFL LCD?
A CCFL LCD is a type of flat-panel display that uses an LCD with CCFL backlighting. It's one of the oldest types of LCD technologies on the market. In the past, most televisions, computer monitors and other display devices featured CCFL LCD technology. CCFL LCDs are simply LCDs that feature CCFL bulbs for the backlighting.
What Is an LED LCD?
An LED LCD, on the other hand, is a flat-panel display that uses an LCD with LCD backlighting. It still has a layer of liquid pixels; all LCDs have a liquid pixel layer, and LED LCDs are no exception. They are known as "LED LCDs," however, because they use LED bulbs for the backlighting.
In both CCFL LCDs and LED LCDs, backlighting is needed to illuminate the pixel layer. The pixel layer isn't capable of illuminating itself. Rather, it requires illumination from an external source. CCFL LCDs use CCFL bulbs for the backlighting, whereas LED LCDs use LED bulbs for the backlighting. Aside from backlighting, they are two similar technologies that revolve around LCD.

