Are you drooling at the cool LED screens in the mall, and your hands are trembling when you check the prices? Or was it confused by the "P2.5" and "COB packaging" that the salesperson said? Don’t panic! Today, let’s take a look at the tricks of choosing LED splicing screens, especially the five most likely pitfalls that novices can step on - some mistakes may make your screen "spendless" as soon as it is installed.

Let me ask myself a few questions first: Are you planning to install the screen in front of the hot pot restaurant or in the company’s conference room? Do you have to turn on for 20 hours a day or light it up occasionally? Will the person closest to the screen stand 3 meters away or watch it behind? If you can’t figure out these things, it will be useless to spend more than much money. (I whispered here that last year there was a chain supermarket chain because it didn't think clearly that the screen I bought was too bright, so customers were so flashed that they couldn't open their eyes when they entered the door)

1. What are the devil details hidden in the parameter table

​​“1920Hz refresh rate "It sounds great, right? ​ ​ But if you use it to broadcast PPT, it is a waste. What really needs this parameter is those where racing videos or game live broadcasts are required - the screen switches will not cause any drag. Just like when you buy a sports car but you only drive it in the community, and you haven't stepped on the accelerator halfway.

Speaking of brightness, there is an unusual knowledge point:​ ​The outdoor screen is not required to install under the shade of the tree.​ ​. The most outrageous case I have ever seen is that someone installed a super bright screen in the open air area of ​​the cafe. The reflection of the screen at noon has left all the coffee lace. Remember this formula:

• Square with direct sunlight: 5000-8000cd/m²
• Pedestrian street with awning: 3000-5000cd/m²
• Indoor exhibition hall: 800-1500cd/m²

2. The truth about the patchwork is shocking

The salesperson will definitely tell you that "the thinnest 0.88mm in the industry" but do you know? ​ ​Standing 5 meters away, the gap between 1.5mm and 0.88mm is hard to tell the difference between the naked eye.​ ​! A friend who works in a cinema calculated the calculation: reduced the patchwork from 1.2mm to 0.9mm, which was 4,000 yuan per square meter, but the nearest seat in the auditorium was 8 meters away.

However, these three situations must be fought to the point of being:

1. Live broadcast of surgical surgery (doctors must see the blood vessel texture clearly)
2. The window display of luxury goods stores (the bag stitches cannot be broken)
3. Monitoring Center (you can't be dazzled when watching 16 images at the same time)

3. The three most likely points to overturn on the installation site

Last month, a gym made a joke - I bought high-end floor tiles screens, but the decoration team didn't know that they would have to pre-embed the route, so they could only go to the open route. Remember these three life-saving details:

1. ​​Wall load bearing​ ​: 1 square meter P3 screen weighs about 35kg, steel structures must be installed in old houses
2. ​​Heat dissipation space​ ​: Don't stuff the screen into the sealed cabinet, leave at least 20cm heat dissipation channel behind it
3. ​​Power supply wiring​ ​: Never tie it with the audio cable, otherwise there will be a current sound when you turn on the computer.

There is a tip: ask the manufacturer to send someone to conduct on-site inspections. Regular companies will bring laser rangefinders and illuminator, and even the inclination of the wall must be measured. Last year, there was a museum's arc screen, but it took three more days to adjust the splicing because of the error of 0.5 degrees.

4. What invisible pits are hidden after-sales service

The most deceptive contract I have ever seen says "Three-year warranty for the whole machine", but the lamp beads on the screen are broken but they are said to be consumables without warranty. ​ ​Be sure to keep an eye on the contract and write clearly:​​

• The ratio of necrosis of lamp beads is considered as the warranty range (the industry is within one ten thousand)
• Is there any additional charge for upgrading the control system software?
• Whether the response time is tomorrow/night shift system (the emergency room can't wait for 48 hours to respond)

A restaurant owner suffered a secret loss: the water in the screen is not warranty because he installed it in the kitchen outlet, and the contract clearly stated that it should prevent oil smoke environments. Therefore, the installation location must be reported to the manufacturer in advance!

Editor's opinion

Do you still dare to place an order casually after reading these? Remember three meditations:​ ​“Set the parameters of the scene, choose the distance and select the joints, and use the words in the contract”​ ​. Next time I met a salesman bragging about "4K ultra-high definition" and asked directly: "My wall is 8 meters away from the audience seat. Can the naked eye see the difference between 4K and 2K? ”Make sure to ask the other person—after all, it is more important to be suitable than expensive, right?

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