For full color LED displays, LED beads are the most critical component, and the quality of LED beads plays a very important role in determining the quality of LED displays. Let's take a look at the important indicators of LED lamp bead quality!

The important indicators of LED lamp bead quality mainly include:

1、 Full color LED display brightness

The brightness of LED beads determines the brightness of full-color LED displays. The higher the brightness of LED beads, the greater the margin for using current, which is beneficial for saving power consumption and maintaining the stability of LED beads. LED beads have different angle values. When the chip brightness is set, the smaller the angle, the brighter the LED, but the smaller the viewing angle of the display screen. Generally, LED beads of 100 to 110 degrees should be selected to ensure sufficient viewing angle for full color LED displays.

2、 Failure rate of full color LED display screen

LED display screen is composed of tens of thousands or even hundreds of thousands of red, green, and blue LED beads. The failure rate of the lamp beads will not be higher than 1 in 10000 even after 72 hours of aging.

3、 Attenuation characteristics of full color LED display

The brightness of LED lamp beads will gradually decay with increasing usage time. The attenuation speed of LED bead brightness is related to LED chips, auxiliary materials, and packaging processes. Generally speaking, after a 1000 hour, 20 milliampere ambient temperature lighting test, the attenuation of red LED beads should be less than 7%, and the attenuation of blue and green LED beads should be less than 10%. The consistency of red, green, and blue attenuation has a significant impact on the future white balance of full color LED displays, which in turn affects the display fidelity of the display.

4、 Antistatic capability of LED display screen

As LED lamp beads are semiconductor devices that are sensitive to static electricity and are prone to electrostatic failure, their antistatic ability is crucial to the lifespan of LED displays. In general, the human electrostatic mode test failure voltage of LED lamp beads should not be lower than 2000V.