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LCD knowledge sharing CCFL and LED difference

- Dec 11, 2017 -

Speaking of LCD, if you don't have a long time to pay attention to liquid crystal display, I'm afraid you don't really hear much about it. And even if you know a lot of people, there may be a lot of it, so what is LCD like? What are the characteristics of its work?

In fact, LCD is the true name of the liquid crystal display, not the LED that we often say. It is the abbreviation of Liquid Crystal Display in English. It is constructed by placing a liquid crystal box in two parallel glass substrates and placing a thin film transistor on the glass of the lower substrate. A color filter is set on the base glass plate. Then, the rotation direction of the liquid crystal molecules is controlled by the change of the signal and voltage on the thin film transistor. Thus the control of each pixel point is realized.


For LED, it is the abbreviation of the English Light Emitting Diode, which is translated into Chinese as a light-emitting diode. It is capable of converting electrical energy into visible solid semiconductor devices, can be directly converted into electricity to light; for LED, it has less power consumption, long service life, low cost, high brightness, low malfunction, large visual angle and visual distance and other characteristics, therefore, unlike LCD, it the application is becoming more widespread, including lighting, large screen display, there are small captions and so on, also have LED figure.

In fact, LCD is a general name, according to the different backlight, it is divided into LED backlight liquid crystal screen and CCFL backlight LCD screen. Vendors are sometimes abbreviated to consumers for abbreviated to LED.

For the difference between CCFL and LED, from the technical structure, the LED backlight is more power saving than the old LCD (CCFL). Although at the price, LED is more expensive than the old LCD, but it is better than the old LCD on color brightness and color saturation. These are where the two are technically different.