Five core technologies of small-pitch LED display

1. Reduce the dead light rate of the display lights and ensure the stability of the screen body
     The dead light rate of traditional LED displays is 1 in 10,000 according to the industry standard, but if the small-pitch LED display is based on the previous standard, there is one dead light in 10,000 square meters, so the display is almost impossible to see. . Therefore, the dead light rate of the small-pitch LED display must be controlled at 1/100,000 or even 1/10,000,000 to meet the needs of long-term use. Otherwise, if a large number of dead lights appear for a period of time, the user must not be able to. accepted.

2. Achieve low brightness and high gray
     Many people know that the human body sensor light is different from the outdoor display that requires high brightness, refresh rate and energy saving requirements. The indoor display needs to reduce the brightness. Experiments show that from the perspective of human eye sensitivity, LED (active light source) The brightness is twice that of passive light sources. As far as specific data is concerned, the optimal brightness of small-pitch LEDs entering the room is 200-400cd/m2.

3. Standard resolution with signal source
     Different from the outdoor display, outdoor advertisers will select suitable content and display according to the resolution of the display screen. The indoor display signal source has certain standards. As an LED display manufacturer, it cannot be required to access the indoor signal source. It is necessary to adapt to the resolution of the display screen, but to adapt to the needs of indoor signal sources, and to design and ensure the corresponding resolution, so as to meet the needs of users as much as possible.

4. Support system access and display control of multiple signals and complex signals
     Compared with outdoor display signals, small-pitch LED display display signals are characterized by multi-signal access and complex signal access, such as multi-location video conferences, which require remote access signals, local access signals, and multi-person use. For access, experiments have shown that simply implementing multi-signal access through the split screen scheme will reduce the signal standard. Therefore, how to solve the problem of multi-signal and complex signal access also requires the technical support of small-pitch LEDs.

5. Realize seamless seam and high-speed correction
     The biggest advantage of small-pitch LED displays is that they are seamless, but they have higher requirements when splicing. For liquid crystal, as long as the seams are uniform, there is no problem, and the seams are not obvious. But the small spacing of LEDs cannot be like this. If the modules are squeezed too tightly, bright lines will appear, and when the modules leave, dark lines will appear. So it is not easy to splicing well. Therefore, the process and calibration technology of the cabinet, as well as the guarantee and good combination of efficiency, need to be guaranteed.