source:other news release time:2022-11-10 Hits: Popular:led screen wholesaler
1. Perspective
The viewing angle of LED display screen depends on the viewing angle of LED lamp beads. At present, most outdoor displays use a horizontal viewing angle of 100 ° Vertical angle of view 50 °; Elliptical LED, indoor display screen is 120 ° horizontally and vertically; Chip LED. The display screen on the expressway is generally 30 ° due to its particularity; The round LED of the viewing angle is enough. The display screen on some tall buildings has high requirements for vertical viewing angle. Angle of view and brightness are contradictory, and large angle of view will inevitably reduce brightness. The choice of perspective needs to be determined according to the specific purpose.
2. Brightness
LED brightness is an important determinant of display brightness. The higher the LED brightness, the greater the margin of current usage, which is beneficial to saving power consumption and maintaining LED stability. LEDs have different angle values. When the chip brightness is set, the smaller the angle, the brighter the LED will be, but the smaller the viewing angle of the display screen will be. Generally, 100 degree LED shall be selected to ensure adequate viewing angle of the display screen. For displays with different point spacing and viewing distance, a balance point should be found in brightness, angle and price.
3. Inefficiency
As the full-color LED display screen is composed of tens of thousands or even hundreds of thousands of groups of red, green and blue LED pixels, the failure of any color LED will affect the overall visual effect of the display screen. Generally speaking, according to industry experience, the failure rate of LED display screen from the start of assembly to the 72 hour aging before shipment should not be higher than 3/10000. (It refers to the failure caused by the LED lamp bead itself)
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