Outdoor full color LED display brightness inconsistent, is why? Resulting in full-color display brightness inconsistent, mainly due to two factors determine the light emitting element and drive element.
   Light-emitting element is LED light tube, brightness inconsistencies in the production process is inevitable. But Countermeasures LED display manufacturers taken in the sub-file after production, the luminance difference of adjacent two tranches of smaller, better consistency, but low yield and high inventory levels can cause a phenomenon more serious. Therefore, the manufacturers regard the difference in brightness of adjacent two tranches of control around 20%.
Driving element is generally constant current driver chips, such as MBl5026 like. The chip contains 16 constant current drive output, you can set the current output value resistors, the error of each output is the same chip control at less than 3%, the output error of different chips controlled within 6%.
       LED display each pixel appear between 25% brightness error is normal, if the use of LED light tube is not the same grade, type of product, could rise to more than 40% brightness error.
   In addition, it is worth noting that full-color LED display brightness inconsistent, is the root cause Huaping reasons, can not use post-correction device to correct only by LED display manufacturers in the manufacturing process to achieve. So buy inconsistent brightness of the screen, please contact your service provider or manufacturer asked to solve.