Light-emitting components that LED light-emitting tube, the brightness of the production process is not inconsistent inevitable. However, LED display manufacturers to take countermeasures is completed after the production of sub-file, the adjacent two files of the brightness difference is smaller, the better the consistency, but will result in low yield and high inventory of the phenomenon of the more serious. Therefore, the manufacturers have put the brightness difference between adjacent two files controlled at about 20%. Driving components are generally constant current driver chips, such as MBl5026 and so on. These chips contain 16 constant-current drive outputs internally, which allow you to set the current output with resistors. The error of each output of the same chip is controlled within 3%, and the output error of different chips is controlled within 6%.
LED display pixel 25% brightness error is normal, if the LED light tube is not the same level, the type of product, the brightness error will rise to 40% or more. It is also noteworthy that the full-color LED display brightness is inconsistent, is the fundamental reason for Huaping, can not be corrected with post-calibration equipment, only by LED display manufacturers to achieve the manufacturing process. So buy inconsistent brightness of the screen, please contact the service provider or manufacturer to solve.