Looking at the color cast and color of the LED display modules from the side, the displayed colors are inconsistent. What is going on? Why does the LED display have color difference? The following is an analysis of the reasons for the color cast of the LED display module. After reading these, your doubts can be solved.

  1. Problems with LED lamps: (including inconsistent chip parameters, defects in packaging glue materials, position errors during die bonding, errors during spectroscopic color separation, etc.), which will affect the luminous wavelength, brightness and angle of the same batch of LED lamps. Therefore, there is a very important process in the production of LED displays: mixing lights. Mix all the LED lights of the same color evenly, and then insert them on the PCB. The advantage of this is that it can avoid partial color cast of the LED module.

2. Production process: After the LED module has been wave soldered, the LED position has been fixed, and it should not be moved at this time. However, because many companies do not have the protection conditions, they often collide and bend the LED lights in the process of testing, repairing, soldering pin headers, aging and transferring. Then, the so-called whole line is carried out before the glue is poured, which can easily cause the lights on the LED screen to stagger irregularly, resulting in the color cast of the module.

3. Power supply problem: When designing the LED display, it is impossible to know what kind of materials to choose (including the selection and amount of power supply), and there is a problem with the power supply system, which leads to the phenomenon of uneven power supply of the LED module.

4. Control system and control IC: Because LED display manufacturers do not have the design, development, testing and production capabilities of LED display control systems and control ICs. Of course, the LED display screen produced cannot be guaranteed, and the only thing you can do is adjust the parameters.

Therefore, when the color cast of the LED display module is caused by the LED lamp and the production process, the module can only be repaired or replaced. When it is a power supply problem, you need to replace the power lamp, etc. If it is a problem with the control system and IC, you can only ask the manufacturer to repair or solve it.