LCD and LED are two of the most common types of displays used in TVs, monitors, and other electronic devices. Both technologies use liquid crystals to create images, but they differ in how the crystals are backlit.
LCD
LCD stands for liquid crystal display. LCD displays use a layer of liquid crystals sandwiched between two polarizing filters. When an electric current is applied to the liquid crystals, they align in a way that allows light to pass through. When no current is applied, the liquid crystals block the light.
LCD displays are backlit by cold cathode fluorescent lamps (CCFLs). CCFLs are long, thin tubes that produce light when an electric current is passed through them.
LED
LED stands for light-emitting diode. LED displays use a grid of light-emitting diodes (LEDs) to backlight the liquid crystals. LEDs are small, semiconductor devices that produce light when an electric current is passed through them.
LED displays are more energy-efficient and have a longer lifespan than LCD displays. They also produce a brighter and more vibrant picture.
Differences between LCD and LED
Here is a table that summarizes the key differences between LCD and LED displays:
| Feature | LCD | LED |
|---|---|---|
| Backlight type | Cold cathode fluorescent lamps (CCFLs) | Light-emitting diodes (LEDs) |
| Energy efficiency | Less energy-efficient | More energy-efficient |
| Lifespan | Shorter lifespan | Longer lifespan |
| Picture quality | Less vibrant picture | Brighter and more vibrant picture |
| Cost | Less expensive | More expensive |
Which one is better?
LED displays are generally considered to be better than LCD displays. They are more energy-efficient, have a longer lifespan, and produce a brighter and more vibrant picture. However, LED displays are also more expensive than LCD displays.
If you are looking for the best possible picture quality and don't mind paying a bit more, then an LED display is the way to go. However, if you are on a budget or don't need the absolute best picture quality, then an LCD display is still a good option.