How to distinguish lcd screen from led screen?Lcd and led are two different display technologies. Lcd is a display screen composed of liquid crystals, while led is a display screen composed of light-emitting diode (LED). Friends, you should understand the difference between lcd and led by now! Then you will say that led is so good, then I must buy led display screen! However, the focus of this paper is here: at present, the led display screen is not the real led display screen, to be exact, the led backlit liquid crystal display, the liquid crystal panel is still the traditional lcd display screen, in a sense, this more or less contains the nature of fraud! South Korea's Samsung company has been convicted by the British Advertising Association of violating the country's advertising law because its "ledtv" LCD TV misleads consumers. For LCD, the most important key is its LCD panel and backlight type, while the LCD panel on the market generally adopts tft panel, which is the same. The difference between led and lcd is only that their backlight types are different: led backlight and ccfl backlight (that is, fluorescent lamp), diode and cold cathode lamp respectively.