The important indicators that reflect the quality of dedicated full-color LED displays include:

1. Inefficiency: Due to the fact that full-color display screens are composed of tens of thousands or even hundreds of thousands of sets of red, green, and blue LEDs, the failure of any color LED will affect the overall visual effect of the display screen. Generally speaking, according to industry experience, the failure rate of LED displays from assembly to aging for 72 hours before shipment should not exceed 0.03% (referring to failures caused by LED devices themselves).

2. Anti static ability: LEDs are semiconductor devices that are sensitive to static electricity and can easily cause static failure. Therefore, anti-static ability is crucial for the lifespan of display screens. Generally speaking, the failure voltage of the human body electrostatic mode test for LED should not be lower than 2000V.

3. Consistency: A full-color display screen is composed of countless red, green, and blue LEDs, and the consistency of the brightness and wavelength of each color LED determines the brightness consistency, white balance consistency, and chromaticity consistency of the entire display screen. Generally speaking, display manufacturers require device suppliers to provide LEDs with a wavelength range of 5nm and a brightness range of 1:1.3. These indicators can be graded by the device supplier through a spectrophotometer. The consistency of voltage is generally not required.

4. Brightness: LED brightness is an important determinant of display screen brightness. The higher the brightness of the LED, the greater the margin of current usage, which is beneficial for saving power consumption and maintaining LED stability. LEDs have different angle values. With a fixed chip brightness, the smaller the angle, the brighter the LED, but the smaller the viewing angle of the display screen. Generally, a 100 degree LED should be selected to ensure sufficient viewing angle for the display screen. A balance should be found between brightness, angle, and price for display screens with different point spacing and line of sight.

5. Attenuation characteristics: Red, green, and blue LEDs all have the characteristic of brightness attenuation with increasing working time. The quality of LED chips, the quality of auxiliary materials, and the level of packaging technology determine the decay rate of LEDs. Generally speaking, after 1000 hours and 20 milliampere hour ambient temperature lighting test, the attenuation of red LED should be less than 10%, and the attenuation of blue and green LED should be less than 15% The consistency of red, green, and blue attenuation has a significant impact on the white balance of full-color LED displays in the future, which in turn affects the display fidelity of the display.