"The brightness of the LED screen is not as high as possible, and the configuration must be reasonable." Whether the brightness of the LED screen is sufficient depends on the external illuminance, not the higher the brightness, the better. Just like a car, the faster the better, the faster the better within the safe range that the machine can bear and the safety is guaranteed. Just like human power, LED lamp beads also have a limit value, which cannot be required by the limit standard. Usually, our LED module has set parameters according to the load ratio of 70% in the design stage, such as the brightness limit value. At around 2000CD, in order to ensure the life of various indicators of the LED, it is designed according to 1400CD to ensure that it will last for a long time. As we all know, LED, as a new light-emitting technology, is based on light-emitting diodes. Compared with traditional light sources, LED has the properties of low energy consumption and high brightness, so led screens are becoming more and more popular. In addition, when many businesses introduce LED screen products to users, they often use "low energy consumption, high brightness" as a publicity gimmick, and instill in users a concept of "the higher the brightness, the better, the more value-for-money". Is this really the case? ?led screens are popular in major cities due to their unique advantages over DLP and LCD splicing, and are widely used in building advertisements, subway stations, shopping malls and other fields. Undoubtedly, the high brightness of the large screen is largely responsible for the fact that LED screens have received such attention, but is it really better to buy LED screens with higher brightness? In addition, the problem of light pollution in cities around the world is already very serious. Many countries have even introduced laws and regulations to strictly control the brightness of outdoor lighting and large screens. LED screen, as one of the higher brightness among many display technologies, has almost become the overlord of outdoor display, but once at night, the overly bright screen will become an invisible "pollution". In order to meet the national environmental protection standards, the brightness is reduced At the same time, it may cause extreme loss of grayscale, which cannot guarantee a good picture display effect. First of all, the LED screen adopts self-luminous technology. As a light source, LED lamp beads must have the problem of brightness attenuation after a period of use. To achieve high brightness, a larger drive current is required. However, under high current, the stability of LED lamp beads will be reduced, and the decay will be faster. That is to say, the simple pursuit of high brightness is actually at the expense of the image quality and lifespan of the LED screen. It is possible that the investment cost has not been recovered, and the large screen can no longer serve, resulting in a great waste of resources. In addition to the above two points, the cost increase factor also needs attention. Higher brightness will inevitably lead to an increase in the overall cost of the project, and it is debatable whether users really need such a high brightness, which may cause performance waste. Therefore, simply pursuing high brightness is extremely harmful. When we purchase LED screens, we should not trust the seller's propaganda. We should comprehensively consider cost performance and large-screen application requirements according to our own needs, and don't blindly pursue high brightness. .