7 Elements Tell You How To Judge The LED Transparent Screen Good And Bad
Mar 24, 2021
Brightness comparison
The acrylic plate is pressed against the same number of modules and then slowly raised a small distance to see whether the brightness of the lamp bead can meet your requirements.
Of course, it is more direct to put the module directly inside the word. The higher the brightness, the higher the requirements for the lamp bead, and the Chen is relatively high.
Pure indoor environment can be used with low brightness, but if it is a window LED transparent screen or LED glass curtain wall screen, then it is necessary to seek the bright LED transparent screen can be.
The light of the lamp bead is uniform
While watching the brightness, we should pay attention to whether the light of the lamp bead is uniform. When observing the white light, we must pay attention to whether there is color difference (this is very important) - if you cover it with a thin white paper, it may not be observed, so we should use a certain thickness of acrylic.
Whether there is color difference is the most important part of the quality distinction, is also one of the main reasons for the LED transparent screen price difference.
Wire identification
High quality wire, UL certification, these through the LED transparent screen manufacturers are not reliable, so the most direct method is to peel off the skin, count the number of wire core inside!
Modules with 15,17,19 or even 20 or 30 cores should be no worse than those with 14 or 11 cores, and vice versa.
Lamp bead temperature
After lighting for a period of time, touch the LED lamp bead with your hand, the temperature is very high or even hot certainly not as good as the stability of the low temperature.
Solder joint quality
The full solder joint proves that the welding process is good, and the high brightness proves that the solder is good.
Serious is the virtual welding, prone to poor contact phenomenon, follow-up maintenance trouble.
LED transparent screen paste light mode
At present, there are two production methods of LED transparent screen, one is positive light, the other is side light.Athough the side luminescence has a high permeability, the lamp bead packaging technology needs to be tested in the market, while the positive luminescence lamp bead adopts the traditional LED display lamp bead, and the quality is very stable after the market test.
PCB board thickness
If the PCB board is relatively thick, it will affect the permeability of the LED transparent screen.
