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How does the LED backlight classification be divided?
- Jun 01, 2017 -

When talking about the classification of LED backlight classification, we first come to understand what is the meaning of LED backlighting. LED backlight refers to the use of LED (light-emitting diode) as a liquid crystal display backlight. Compared with the traditional CCFL (cold cathode tube) backlight, LED has low power consumption, low heat, high brightness, long life and other characteristics, is expected to completely replace the traditional backlight system in recent years.



Q: How is the LED backlighting sorted?


A: According to LED backlight technology category


At present, such LED backlight classification can be divided into RGB-LED and white LED. The former with the ability of dynamic partition backlight technology and three-color RGB LED excellent light source, color and contrast compared to the traditional backlight has a qualitative leap, it is usually used in high-end TV products, the general cost of more than 3W yuan products. While the latter is the more common types of LED backlighting, notebook and LCD monitors are also widely used, white LED backlight is usually used from the edge of the display light, and RGB LED and the back of the traditional backlight is not the same.


According to the LED backlight location of the incident:


LED backlight module according to the light source incidence position is divided into straight and side into the two categories, can be divided into directly under the RGB-LED, straight under the white LED, side light white LED.


RGB-LED and white LED difference:


RGB LED color gamut performance is slightly better, the disadvantage is the higher cost, the price of TV products is still difficult to accept the average consumer; and white LED light source, although the color gamut inferior to RGB LED, but its relatively high contrast As well as the cost of technology is RGB-LED can not match.


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Direct type and side into the LED backlight the difference:


LED side light source from both sides of the fuselage issued a light source, through the built-in high light transmission light guide plate role, so that the light projected onto the panel. Limit the maximum thickness of the LCD is the thickness of the fluorescent light, the side of the light source on both sides of the projection position, making it does not occupy the TV thickness of the space.


Compared with the side light source, the direct backlight LED can dynamically control the backlight, so that in the performance of some dark scenes of the image, only need to adjust the necessary backlight area (in the picture shows the black or dark part) Local lighting, that is able to.

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