Edge LED illumination is extremely uniform, but cannot be partially controlled. It is therefore not possible to backlight certain parts of the picture more or less. The advantage of Edge-LED is primarily the extremely flat and cost-effective design of the screens.
In addition to Edge-LED illumination, there is also Full-LED, also called Direct-LED. This technology differs from the Edge-LED technology in the distribution of the LEDs behind the screen. With this technology, the LEDs are evenly distributed over the screen surface and can be controlled locally, local dimming; which increases the dynamics of the image display.