The Influence of LED lamp bead on LED display:
1, the angle of view
The Angle of LED display depends on the Angle of LED lamp bead. To date, most outdoor display screens use elliptical LED with horizontal angle 100 °and vertical angle 50 °, while indoor displays use 120 °angle both horizontal and vertical. The displays on the highway usually use 30 °angle due to its particularity. Usually round LED is enough, but for some high building display, the perspective must depend on specific purpose because big angle will inevitably reduce brightness.
 
2, brightness
LED brightness is one of the important determinants of display brightness. Higher LED brightness, the greater allowance of using current will be. It is good to save electricity and maintain the stability of LEDs. LED has a different point of view. In the fixed chip brightness, smaller angle will make LED brighter, but the smaller screen view. Generally 100 degrees of LED display screen should be used to ensure enough view. In view of the different spacing and different visual display, we should find a balance in brightness and angle.
 
3, the failure rate
With full-color displays consisting of tens of thousands or even hundreds of thousands sets of red, green, blue LED pixels, any color failure will affect overall visual result. Generally speaking, according to industry experience, before assembly, the aging failure rate should be no more than three over ten thousand (referring to the failure caused by LED lamp bead itself).
 
4, antistatic ability
LED is a semiconductor device, which is sensitive to electrostatic. The antistatic ability is very important to the life of the screen because it is easy to cause static electricity failure. In general, the failure voltage should not be less than 2000V.