When we actually buy indoor small-pitch LED displays, just like when we buy mobile phones, we not only need to look at the pixel pitch resolution, but also need to pay attention to some other points. Let’s take a look at what points users should pay attention to in order to meet the Use the premise to achieve the best results.
1. “Low light and high gray” is the premise:
As a display terminal, indoor small-pitch LED displays must first ensure viewing comfort. Therefore, when purchasing, the primary concern is brightness. Relevant studies have shown that in terms of the sensitivity of the human eye, as an active light source, the brightness of LED is twice that of a passive light source. In order to ensure the comfort of human eyes, the brightness range of a small-pitch full-color LED display can only be Between 100cd/㎡ – 300 cd/㎡.
2. Select the point spacing, pay attention to the balance of “effect and technology”
Compared with traditional LED screens, the prominent feature of indoor small-pitch LED displays is the smaller dot pitch. In practical applications, the smaller the dot pitch, the higher the pixel density, the more information capacity that can be displayed per unit area at one time, and the shorter the distance suitable for viewing. On the contrary, the distance suitable for viewing is farther. Many users naturally think that the smaller the dot spacing of the purchased products, the better, however, this is not the case.
Conventional LED screens want to achieve the best visual effects and have the best viewing distance, and the same is true for indoor small-pitch LED displays. Users can make simple calculations through the optimal viewing distance=dot spacing/0.3~0.8. For example, the optimal viewing distance of P2 small-pitch LED screen is about 6 meters away.
We know that the smaller the dot pitch, the higher the cost of the small pitch full-color LED display. Therefore, in the actual purchase, users should comprehensively consider their own costs, needs, application scope and other factors.
3. Select the resolution, pay attention to the matching with the “front-end signal transmission equipment”
The smaller the dot pitch of the indoor small-pitch LED display, the higher the resolution, and the higher the clarity of the picture. In actual operation, users want to build the best small-pitch LED display system. While paying attention to the resolution of the screen itself, they should also consider the combination with the front-end signal transmission products.
At present, indoor small-pitch LED display products have been widely used in TV studios, power system monitoring centers, aerospace command centers, military command centers, government affairs halls, urban monitoring centers, video conference rooms, dispatching rooms, airports, railway stations, Hotels and large and medium-sized enterprises.
From the above point of view, the resolution of the pixel is not the higher the better, but needs to be evaluated from many aspects. Another thing that is easy to ignore is the brightness of the LED. Many people may also think that the higher the brightness of the LED display, the better Good. So, when buying an LED screen, the higher the brightness, the better the quality?
As we all know, LED, as a new type of light-emitting technology, is based on light-emitting diodes, and has the characteristics of low energy consumption and high brightness. Therefore, LED displays are becoming more and more popular. Not only that, when many businesses introduce LED screen products to users, they often use “low energy consumption and high brightness” as the killer, creating a perception for users that “the higher the brightness, the better, and the more value”.
Is that so? In order to achieve a good energy-saving goal, in fact, our excessive pursuit of high brightness is contrary to the energy-saving goal. So what is the potential relationship between “high brightness” and “high energy saving”?
Generally, the brightness range of indoor LED display is recommended to be around 800-1200cd/㎡, and it is recommended not to exceed this range. The brightness range of outdoor LED displays is around 5000-6000cd/㎡, which should not be too bright. The brightness of the LED display is not as high as possible. There should be a limit. For example, the maximum brightness of the outdoor LED display used is 6000cd/㎡, but you have to adjust the brightness to 7000cd/㎡, which is nothing more than increasing the LED. Lamp drive current.
However, the physical characteristics of LED lamps will inevitably be damaged: high-brightness LED lamps must be accompanied by high attenuation and low stability characteristics. High attenuation is not only not conducive to the long-term use requirements of the LED display, but also becomes a congenital defect of excessive pursuit of high brightness, and this congenital defect will damage the life and picture effect of the LED display all the time and by a multiplier effect.
It will double the speed of its brightness attenuation, resulting in several times faster attenuation in the later stage, becoming a display with high attenuation. Moreover, it exists in a vicious circle of brightness attenuation, which cannot meet the requirements of long-term use at all.
Not only that, today, the light pollution problem in cities around the world has become very serious, and many countries have even issued laws and regulations to strictly control the brightness of outdoor lighting and display screens. As one of the higher brightness of many display technologies, LED display has almost become the overlord of outdoor display, but once it reaches night, the too bright screen will become an invisible “pollution”. Therefore, the pursuit of a balance between brightness and environmental protection seems more meaningful.
The last factor to consider is cost. Simply pursuing higher brightness will inevitably lead to an increase in the overall cost of the project. At the same time, it also means that users are likely to pay for the performance that exceeds their usage requirements, resulting in waste.
Therefore, when purchasing an LED display, there is no need to listen to the misunderstanding of the merchants that the higher the brightness, the better the screen. The most important thing is to understand that the blind pursuit of brightness is meaningless, and even causes the loss of picture quality, life and cost. .