Have you ever encountered this situation? Obviously the parameter sheet says "high definition and high brightness", but the actually installed LED screen seems to be covered with a layer of fog, or does the screen always feel stuck when playing videos? My cousin suffered from this problem when he opened a supermarket. He spent a lot of money to install an advertising screen, and it was impossible to see the promotional information clearly in the afternoon on a sunny day. Only later did he find out what the problem was.​ ​Light source chip packaging process​ ​superior. Today, I will take you off the "coat" of the LED screen and see where the secrets that really determine whether it is good or bad are hidden.

Let me tell you a true story first. Last year, a TV station held a New Year's Eve party. When the main screen on the stage was reaching its climax, a color block suddenly appeared. The director was so anxious that he almost dropped the walkie-talkie. After inspection, it was found that​ ​Grayscale processing chip cuts corners​ ​, obviously the nominal 16bit is actually only 14bit. So remember,​ ​To judge the quality of LED screen, you need to look at these three hidden items​​：

1. ​​Chip flip technology​ ​(Directly related to the brightness attenuation after 5 years)
2. ​​Power module layout​ ​(Like blood vessels, affecting overall stability)
3. ​​Software correction algorithm​ ​(Equivalent to the "brain nerve" of the screen)

I visited a mysterious factory a few days ago. The assembly line was full of robotic arms mounting components. The person in charge said that it takes 72 hours for each screen to leave the factory.​ ​High temperature and high humidity test​ ​, it made me sweat - this is more harsh than standing on the road in the dog days of summer. What's even more amazing is their aging workshop, with hundreds of screens flashing at the same time. From a distance, it looks like a data matrix in a science fiction movie. Only then did I understand​ ​Good screens are all made through abuse​ ​, those manufacturers who claim to be "debugging-free" are definitely deceiving people.

​​Three hidden pitfalls that novices must know​​
When helping a friend choose a stadium fence screen, I almost fell victim to a sales trick:

• It was said to be IP65 waterproof, but it turned out that there was no silicone sealing ring at the interface.
• The thickness of the aluminum-magnesium alloy box is 0.5mm less than the mark.
• The control system is actually not compatible with 4K signal sources

To give an actual case, an international e-sports event required a floor tile screen with a delay of 0.03 seconds. A manufacturer directly moved the laboratory to the venue and used an oscilloscope to debug the signal lines one by one. This kind of realism is the hard power, and it is much better than those who can only talk about "imported chips". Now I finally understand why old experts always say​ ​"The key to a good screen lies behind the screen"​​。

Recently I discovered an interesting phenomenon: some shopping mall windows are transparent during the day and light up at night. This kind of​ ​Transparent screen with 86% transmittance​ ​It actually has to go through 12 vacuum coating processes. What's even more exaggerated is the stage floor tile screen, with a three-layer heat dissipation structure buried underneath. No wonder it doesn't get hot when you step on it and dance for three hours. So,​ ​The visible effects are all achieved by invisible technologies.​​。

The editor has two final words: next time you go see LED screen samples, don’t just stare at the screen. Reach out and feel the heat dissipation holes to see if the temperature is even. Squat down and see if there is waterproof glue on the seams of the box. It is best to ask for more.​ ​Component supplier list​ ​. remember,​ ​Not all screens that can shine are good, the ones that can withstand the test of "taking off makeup" are the real ones.​ ​. By the way, don't believe the nonsense about "parameter ceiling". The display screen is not the mobile phone benchmark, practicality and stability are the king!

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