Why do LED beads have a significant impact on LED displays?

%name Why do LED beads have a significant impact on LED displays?

The Importance of LED Display Bead Chips

1. The perspective of an LED display screen is determined by the angle of the LED beads. Currently, most outdoor displays use a horizontal viewing angle of 100° and a vertical viewing angle of 50°. Elliptical LEDs and indoor display screens are selected with horizontal and vertical angles of 120°. SMD LEDs are used for circular displays, whereas display screens on highways are generally selected at 30° due to their particularity. Displays on high-rise buildings may have high requirements for vertical viewing angles, but angle of view and brightness are contradictory. The choice of perspective should be based on the specific purpose.

2. LED brightness is an important factor in determining display screen brightness. The higher the LED brightness, the greater the margin of current usage, which is beneficial for saving power and LED stability. Displays with different point spacing and viewing distances require a balance between brightness, angle, and price.

3. A full-color display screen consists of thousands of pixels composed of red, green, and blue LEDs. Failure of any color LED affects the overall visual effect of the display screen. Industry experience suggests that the failure rate of LED display screens should not exceed 3/10000.

4. LEDs are sensitive to static electricity, so their anti-static ability is crucial for display screen lifespan. The failure voltage of LED’s human electrostatic mode test should not be lower than 2000V.

5. The theoretical lifespan of LED devices is 100,000 hours, much longer than the working lifespan of other components in LED display screens. The quality of LED devices, appropriate working currents, reasonable PCB heat dissipation design, and rigorous production processes will ensure LED devices’ durability, which accounts for 70% of the price of LED displays.

6. After long-term operation, LED display screens may experience a decrease in brightness and inconsistent color due to the brightness attenuation of LEDs. The inconsistent brightness attenuation amplitude of red, green, and blue LEDs can cause LED display screen issues.

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