A good full-color LED display must adapt to different temperatures, different weather, can be used normally on various occasions, and also have a good effect on far and near light, especially in large-scale concerts, the special effect lighting must be particularly excellent
A good full-color LED display must adapt to different temperatures, different weather, and can be used normally on various occasions, and also have a good effect on the distance and light, especially in large concerts, the special effect light must be particularly excellent, but sometimes we will find that the brightness of the LED is different, What is the reason for the abnormal display of some screens of LED full-color display screen, such as black screen, flower screen and inconsistent brightness?
It is concluded that the following three factors can lead to the brightness inconsistency of LED full-color display.
1、 Driving element
The driving elements are generally constant current chips, such as mbi5026. Some chips contain 16 constant current driving outputs, which can be set as the output value of current with resistance. The output error of the same chip should be controlled within 3%, and the output error of different chips must also be controlled within 6%.
2、 Light emitting element
The brightness inconsistency of light-emitting elements, that is, led, is inevitable in the process of producing light-emitting diodes. However, manufacturers generally classify the diodes after producing the diodes. Generally speaking, the smaller the brightness difference between the two adjacent gears, the higher the brightness consistency, However, it will still cause the phenomenon of low yield and high inventory. Therefore, each manufacturer will control the brightness of the adjacent two gears at about 20%.
3、 The display screen is mixed with materials in the production process, and different batches of dot matrix are used.
What if the full-color display screen is black and the brightness is inconsistent?
