The important indicators of the quality of LED lamp beads mainly include

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



The main indicators of the quality of LED lamp beads are:



1. Brightness of full-color LED display



The brightness of the LED lamp beads determines the brightness of the full-color LED display. The higher the brightness of the LED lamp beads, the greater the margin of the use current, which is good for saving power and keeping the LED lamp beads stable. LED lamp beads have different angle values. When the brightness of the chip is fixed, the smaller the angle, the brighter the LED, but the smaller the viewing angle of the display. Generally, LED lamp beads of 100 degrees -110 degrees should be selected to ensure sufficient viewing angle of the full-color LED display.



2. Failure rate of full-color LED display



The LED display is composed of tens of thousands or even hundreds of thousands of groups of red, green and blue LED lamp beads. The failure rate of the lamp beads will not be higher than one ten thousandth even after 72 hours of aging.



3. Attenuation characteristics of full-color LED display



The brightness of LED lamp beads will gradually decrease as the use time increases. The decay speed of the brightness of LED lamp beads is related to the LED chip, auxiliary materials, and packaging technology to a certain extent. Generally speaking, after 1000 hours, 20 mA normal temperature lighting test, the attenuation of red LED lamp beads should be less than 7%, and the attenuation of blue and green LED lamp beads should be less than 10%. The consistency of red, green and blue attenuation is correct The white balance of the full-color LED display will have a great impact in the future, which will affect the display fidelity of the display.



Fourth, the antistatic ability of the LED display screen



Since LED lamp beads are semiconductor devices, they are sensitive to static electricity and can easily cause static failure. Therefore, the anti-static ability is very important to the life of the LED display. Generally speaking, the failure voltage of the human body electrostatic mode test of LED lamp beads should not be lower than 2000V.

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