A high quality outdoor full-color LED display must be used for different temperatures and weather, and can be used in various occasions. For a good effect, especially a large concert, special effects are needed to meet the needs of stage performance. But sometimes we find that there is a discrepancy in the brightness of the LED display. What causes it?
The brightness of the full-color LED display is not consistent, which is determined by two factors, such as the luminescent element and the driving element. The following is an analysis and analysis.
1. The luminescent element is the LED luminescent tube, which is incongruent in brightness during the production process. But the led display screen manufacturers to take countermeasures to be carried out after completion of the production step, the smaller the luminance difference between two gears, the consistency, the better, but the cause of low yield and high inventory phenomenon more serious. Therefore, each manufacturer of the two adjacent brightness difference control is about 20 %.
2. The driving element is generally a constant current drive chip, such as MBl5026, etc. Inside these chips containing 16 output constant current driver, can use resistance setting current output values, the same chip control error within 3% of each output different chip control the output of the error within 6%.
3. It is normal to have a 25% brightness error between each pixel of the LED display screen. If the LED luminescent tube used is not the same class and type of product, the brightness error will increase to more than 40%.
Four, in addition it is important to note that full color led display brightness, is the fundamental cause of the flower screen, can't use the late correction calibration equipment, only the led display screen manufacturers to implement manufacturing process. Therefore, please contact your service provider or manufacturer to solve the screen.