LED display is a video screen which using light-emitting diodes(leds). LEDs are small electronic devices which produce a very efficient light source. Nowadays they are more and more popular, widely used in commercial advertising, stage background, lighting projects etc.
One led display is made up of many led cabinets, One led cabinet is made up of many led modules, One led module is made up of many led pixel dots, One pixel dots is usually made up of 1R1G1B or 2R1G1B.
LED displays have advantage of long lifespan, environmental friendly, user friendly, high brightness, easy installation and easy maintance etc. If one leds/module is broken, you only need to change the only broken leds/module instead of whole led display. Besides, broken leds/module will not affect the performance of other good parts.
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