Analysis of the reason for the brightness inconsistency of full-color LED display
Light-emitting components, LED light-emitting tubes, in the production process of the inconsistency of brightness is unavoidable. However, LED display manufacturers to take the countermeasure is in the production after the completion of the document, the adjacent two stalls the smaller the brightness difference, the better the consistency, but will result in low finished product rate and high inventory of the phenomenon the more serious. Therefore, the manufacturers are the adjacent two-gear brightness difference control in about 20%.
The drive assembly is generally a constant current drive chip, such as MBl5026. These chips contain 16 constant current drive output, can be used to set the current output value, the same chip output error control within 3%, different chip output error control within 6%.
LED display screen each pixel 25% brightness error is normal, if the use of LED light-emitting tube is not the same level, type of products, will cause brightness error rose to more than 40%.
