Teach you how to judge the quality of LED transparent screen
LED transparent screens have been sold in full swing, and LED transparent screen manufacturers have grown from a few to now everywhere. How to judge the quality of LED transparent screens? Some people say that the quality of the cabinet can be roughly judged by the appearance. Is this true? At present The transparent LED panels produced by many manufacturers are similar, even if the appearance is different, the structure principle is the same, circuit boards, lamp beads, wires, etc. If we find a good transparent LED display with our fire eye real gold, the editor will make a brief introduction here:
Brightness comparison
Put the acrylic board close to the same number of modules and slowly raise the distance by a small distance to see if the brightness of the lamp beads can meet your requirements. Of course, it is more direct to put the module directly in the word. The higher the brightness, the higher the requirements for lamp beads, and Chen Ben is also relatively high. The pure indoor environment can use low brightness, but if it is a window LED transparent screen or an LED glass curtain wall screen, then a bright LED transparent screen is required.
Is the light uniform?
While watching the brightness, pay attention to whether the light of the lamp bead is uniform, and pay attention to whether there is any chromatic aberration when observing the white light (this is very important) - if you cover it with a thin white paper, you may not be able to observe it, so Use a certain thickness of acrylic. The presence or absence of chromatic aberration is the most important part to distinguish the quality from bad, and it is also one of the main reasons for the price difference of LED transparent screen.
Wire identification
** Wires, passed UL certification, these are unreliable through LED transparent screen manufacturers, so the direct method is to open the outer skin and count the number of cores inside! Use 15, 17, 19 cores or even 20, 30 cores The module of the line should be no worse than the module of 14 and 11 cores, and vice versa.
lamp bead temperature
After lighting for a period of time, touch the LED lamp beads with your hand, the temperature is very high or even hot, and the stability is not as good as the low temperature.
Solder joint quality
The fullness of the solder joints proves that the welding process is good, and the high brightness proves that the solder is used well; the serious ones are virtual soldering, which is prone to poor contact and troublesome follow-up maintenance.
LED transparent screen sticker light method
At present, there are two production methods for LED transparent screens, one is positive light emission, and the other is side light emission. Although the transmittance of side-emitting light is relatively high, the lamp bead packaging technology needs to be tested by the market, and the light-emitting lamp bead adopts the lamp bead of the traditional LED display screen. After the market test, the quality is very stable.