LCD backlight evolution reveals
Bringing up LEDs, there are certainly many people who are very familiar with them. Today's LEDs are everywhere, and they have a wide range of applications in LCD monitors, TVs, large screens, projections, and lighting. People seem to be familiar with LEDs. It is. In the liquid crystal display industry, LEDs have gradually replaced some CCFL backlights, and they have left some internal injuries. This is a "secret" that many consumers do not understand.
Let’s talk about what is “LED displayâ€. Strictly speaking, there is no such product. However, under the vigorous promotion of various channels, many consumers think that LED display is the most cutting-edge product at present, and its display effect. It is also the best. In fact, this is not the case. LED displays should be called LED-backlit displays. Because LEDs are not devices for imaging, they only function as light. The imaging devices are LCD, MVA or IPS panels. For convenience, the concept of "LED display" can be used temporarily.
LED is not used as a display backlight at the beginning, but with the continuous development of LED technology in recent years, and the gradual decline in cost, it replaced the original CCFL backlight, becoming the mainstream backlight choice, of course, LED as Backlights also have many grades, such as high-end products with RGBLED, while low-end products often use WLED backlight, WLED is the backlight of the LED display we see every day.
What is an LED backlight
LED full name LED (English: Light-EmitTIng Diode, referred to as LED), although the name of this product often appears in the eyes of the public in recent years, but it is not a new technology, it was developed in 1962, However, the early LEDs can only emit single light, and the brightness is relatively low, so the application market is relatively narrow.
Until the last few years, LEDs began to erupt, and the domestic LED industry is booming. Not only has there been a breakthrough in technology, but because of the large number of enterprises, the price has gradually decreased, and finally there is a wide application market, nowadays everywhere. Visible LED TVs, LED displays, LED projectors, and LED lighting are all variants of LED applications.
What are the benefits of LED? The first is long life and strong stability. This can be felt from the LED lights on the street. It is often exposed to the wind and the sun, but it can still be used for many years. Secondly, the energy saving effect is good, and its working current is small. Therefore, the power consumption is lower than that of a conventional light source.
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