When talking about division LED backlight classification, we need to understand what is meant by LED backlighting. LED backlighting refers LED (light emitting diode) as a backlight LCD display. And traditional CCFL (cold cathode tube) backlight compared, LED with 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: LED backlight is how to classify it?

A: According to the type of LED backlight technology division

At present such LED backlight classification can be divided into RGB-LED and white LED. With the outstanding ability of the former light dynamic partitioning backlight technology and tricolor RGB LED's, color and contrast compared to the traditional backlight have a qualitative leap, it is usually applied to high-end TV products, generally cost per product in more than 3W. The latter is the more common types of LED backlighting in notebooks and LCD monitors are also used widely, white LED backlight usually from the edge of the screen displaying the intake of light, and back as well as the traditional RGB LED backlight direct it is different.

The LED backlight incident position division:

LED backlight according to the incident position of the light source is divided into direct type and side-in two categories, it can be divided into direct type RGB-LED, direct type white LED, edge-lit white LED and so on.

RGB-LED and white light LED difference:

RGB LED color performance was slightly better, disadvantage is the high cost, the price of the finished TV still difficult for the average consumer acceptance; while the white LED light source, although the gamut less in RGB LED, but its relatively high contrast and science and technology at affordable cost is RGB-LED can not be compared.

Direct type and side-LED backlight difference:

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

Compared with the light side, while direct type backlight LED backlight can be dynamically controlled, so that the performance of the image some dark scenes, only need to adjust the necessary backlight area (on the screen showed black or dark part) Local lighting, which can show a chiaroscuro effect of natural high-quality images.

Objectively speaking, the various locations and sources have their own advantages in technology. Through different trade-offs, you can achieve different product demand. But now LED LCD TV is still in the introduction phase, direct type RGB LED there is no better reflected in the overall cost. Therefore, edge-lit white LED at this stage is a more reasonable solution.