1, brightness comparison, the acrylic plate close to the same number of modules and then slowly raise a small distance, this time to watch the lamp beads brightness can meet their requirements. Of course, the module directly on the word inside the more direct, the higher the brightness of the lamp bead requirements are also higher, the cost is relatively high. Pure indoor environment using low brightness can be, but if it is a window LED transparent screen or LED glass curtain wall screen, then it is required to be high brightness LED transparent screen can be.

2, in watching the brightness at the same time, pay attention to whether the light beads of the light is uniform, in the observation of white light must pay attention to whether there is no chromatic aberration (this is quite important) - if a thin piece of white paper covered in the above may not be observed, so to use a certain thickness of acrylic. There is no color difference is the most important part of the distinction between good and bad quality, but also leads to one of the main reasons for the price difference of LED transparent screen.

3, wire identification. High-quality wire, through UL certification, these through the LED transparent screen manufacturers indicate unreliable, so the most direct way is to dial the outer skin, count the number of wire cores inside! With 15, 17, 19 cores or even 20, 30 multi-core wire module should not be worse than 14, 11-core module, and vice versa.

4, lamp bead temperature. After lighting for a period of time, touch the LED lamp bead, the temperature is very high and even hot hand is certainly not as good as the stability of the low temperature.

5, the quality of the solder joints. Solder joints full of proof of good welding process, high brightness proof of good solder; serious is welding, easy to contact phenomenon, follow-up maintenance trouble.

6, LED transparent screen paste light way: at present, LED transparent screen has two kinds of production methods, one is positive light-emitting, one is side light-emitting. Side light-emitting although the transmittance rate is relatively high, while the positive light-emitting lamp beads are used is the traditional led display lamp beads, through the market test, the quality is very stable.