What is LED LCD TV? What are its advantages?

Friends who have visited home appliance stores must have seen more and more LED LCD TVs in the black appliance counters. Some friends may ask, hasn’t liquid crystal been called LCD all along, then what is LED? Today I will explain to you the definition of LED and the advantages of LED LCD TVs. I hope it will be of some help to you in purchasing new machines.

In principle, the current LCD TV is a bit like those advertising light boxes on the street. The light source behind it is diffused and evenly illuminates the transparent film with the picture drawn on it, thus transmitting a bright picture. The LCD panel is like that layer of film, but the picture in it will change.

Traditional LCD devices all use CCFLs (cold cathode fluorescent lamps) as light sources. Although the name is very professional, we understand it as the fluorescent lamps used at home, but the lamp tubes are very thin. The colors of many objects under fluorescent lamps are very strange because the light it emits is not real daylight. The daylight we have long been accustomed to is composed of red, orange, yellow, green, cyan, blue, and purple in a certain proportion. But the light of fluorescent lamps overemphasizes some colors and lacks some colors.

So the problem arises: the color of the light source of the light box behind is not accurate enough, and the image produced after passing through the LCD panel naturally cannot overcome the inherent deficiency, resulting in color reproduction deviation. This is also one of the reasons why LCD monitors have always been difficult to satisfy professional users in terms of image display.

LED is an advanced LCD solution that replaces the traditional LCD backlight module with LED.

Advantages of LED backlight technology:

High brightness, and can achieve stable brightness and color performance within the life span.

Wider color gamut (exceeding NTSC and EBU color gamut) for more vivid colors.

Adjustable backlight white balance while maintaining overall contrast. When the user's video source switches between a computer and a DVD player, the white balance can be easily adjusted between 9600K and 6500K without sacrificing brightness and contrast.

Real-time color management. Since red, green and blue light up independently, it is easy to precisely control the current display color characteristics.

It can provide continuous array light source for large-size screens.

Reduce the artifacts of dynamic scenes without sacrificing brightness and life. Because the flickering frequency of traditional CCFL lamps is low, dynamic scenes may cause screen jumps. LED backlight can flexibly adjust the light frequency, and the frequency is much higher than CCFL, so it can perfectly present motion pictures.

The brightness adjustment range is large. It is easy to achieve LED power control, unlike CCFL, which has a threshold for the minimum brightness. Therefore, whether in bright outdoors or in a dark room, users can easily adjust the brightness of the display device to the most pleasing state.

Wide operating temperature range, low voltage, impact resistance. Because of the use of solid-state light-emitting devices, LED backlight has no delicate parts and has strong adaptability to the environment.

Low electromagnetic radiation. LED light sources do not generate any radiation, nor do they contain toxic substances such as mercury, and can be described as green and environmentally friendly light sources.

To sum up, LED LCD TVs have the advantages of energy saving, environmental protection, and more realistic colors, and will definitely become the development direction of LCD TVs.