To make a normally bright LED display, LED lamp beads are essential. LED lamp beads are used the most in the entire full-color LED display, and there may be thousands or even tens of thousands of LED lamp beads per square meter. The LED lamp beads directly determine the performance of the full-color LED display and the saturation and clarity of the color. Next, the editor and you look at the main indicators of the quality of LED lamp beads.
1. Brightness of full-color LED display
The brightness of the LED lamp bead determines the brightness of the full-color LED display. The higher the brightness of the LED lamp bead, the greater the margin of the current used. 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 100-110 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 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 1 in 10,000 even if it is aged for 72 hours.
3. Attenuation characteristics of full-color LED display
With the increase of use time, the brightness of LED lamp beads will gradually decay. The decay rate of LED lamp brightness is related to LED chips, auxiliary materials and packaging technology. Generally speaking, after 1000 hours, 20 mA ambient 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 The future white balance of the full-color LED display has a great influence, which in turn affects the display fidelity of the display.
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