When we choose a large LED screen, we should not blindly pursue the price. The manufacturing cost should be there. Therefore, the choice of the large LED screen should be selected according to the environment that you want to install, and you should also consider your own capital budget, not expensive ones. Choose only the right ones. How to judge whether the color led screen is good or bad?

  No matter which industry you are in, there are some occupational diseases. For example, if we are in the LED large screen industry, we habitually look at the color consistency of the LED large screen, so as to judge the "quality" of the display screen.

  There are similar reasons for the color inconsistency between indoor LED screens and outdoor LED screens, mainly due to the following reasons:

  When we buy large led screens, we will find that the price of large led screens of each manufacturer will vary, and the price of some manufacturers is not only a little higher than that of other led manufacturers, even if it is a comparison of the same model, the price is differentiated It is also very large. Every manufacturer of the display screen said that its own display screen is good. At this time, we feel a little confused. Which one is better? How should I choose? The high price is too expensive, and the low one The price is afraid to pass, so what should I do! Now I will give you a brief introduction on how to choose a large led screen.

  1. The color consistency of the lamps: the selection of lamps for indoor screens is different from that for outdoor screens. The outdoor screens are made by mixing the lamps by the display manufacturer, while the indoor screens are mixed by the packaging manufacturers who supply the lamps upstream. The brightness and color of the lamp and the lamp are classified in advance by the spectrometer before the packaging factory leaves the factory, so the quality of the lamp color is closely related. Secondly, the batches of the original packaging of each coil of lamps must also be the same, rather than mixed shipments of different batches. Labels are attached to the packaging of each reel of lamps, with detailed parameters and production batches printed on it.

  2. Consistency of the ink color of the lamp tube: The consistency of the color modulation on the surface of the lamp tube by the manufacturer of the packaged lamp tube has a great influence on the color consistency of the large LED screen, but generally the manufacturers with good reputation can basically control the process well.

  3. Ink color consistency of the mask: For large LED screens with non-small spacing, a mask must be used to protect the lamp tube, and secondly, the color consistency and flatness of the display screen will become better. However, since masks are used, the color consistency of the masks must be good. In order to save costs, some upstream mask suppliers use non-inkjet masks to supply LED large screen manufacturers. Of course, the mask manufacturer has good process control, and the consistency of the mask without inkjet is also very good. However, for mask manufacturers that are not well controlled, the color consistency becomes quite poor and must be controlled by inkjet. If the inkjet is not a batch, or the supplier re-inkjets the last batch of the remaining material with a new batch, although it is all new ink, it will cause color inconsistency. Therefore, the inconsistent ink color of the mask is also an important reason for the inconsistent color of the display screen.

  4. The ink color consistency of the PCB: the small-pitch LED large screen basically does not use the mask, the denser the distance, the mask can not be placed in the gap between the lamp and the lamp, then the PCB used at this time must use the ink color Consistent PCB. The PCB process with the same ink color is more difficult to control than the ink color consistency of the mask, and it is also closely related to the design of the PCB itself, because the inconsistency of the size of each solder pad on the PCB will affect the consistency of the ink color.

  5. The current controlled by the IC: Although the current of the IC also affects the color consistency of the display screen, the well-known brand IC has little effect on the large LED screen, while some other brands without reputation and even some copycat brand ICs are another matter. .