Have you noticed that some of the advertising screens on the street are dazzlingly bright, while others are like fog? Why can the large-screen cosmetic advertisements in the mall show clear mascara fiber? Some even distort the color of lipstick? Today we will talk about this trick - choosing a large advertising screen, you will suffer a huge loss just by comparing the price!

The manufacturer's foundation is more important than the exhibition hall's style

I have seen too many people stumble on the pit, and when I come up, I ask "how much is a square meter". In fact, I have to first understand the manufacturer's hard power. A reliable supplier must have at least three tricks:

• ​​Fully automated production line​​(The workshop where light beads are pasted by hand will be released in three months)
• ​​24-hour aging laboratory​​(Continuous casting for 72 hours to measure heat dissipation, temperature fluctuations exceed 3℃ and directly reworked)
• ​​Complete three-defense certification​​(The outdoor screen does not have IP65 certification, so wait for a short circuit in the rainy season)

Last year, a chain supermarket suffered a fall. I chose a small factory with cheap pictures. As a result, the screen had a color block fault for half a year, and the maintenance fee was more expensive than buying a new screen. Here is a trick——​ ​To see production delay video​​, the precisely mounted lens of the robotic arm is ten times more reliable than the salesperson.

The word game in the parameters must be seen through

The "high brightness" that merchants boast about may be a trap. Outdoor screen​ ​Intelligent brightness adjustment​​It is the real skill. It must reach 7500cd/m² at noon and automatically drop to 1200cd/m² at night. For example: The screen installed in a pedestrian street does not have this function, so passers-by can't open their eyes at night, and finally they were complained that they forced to reduce power.

​​These parameters must be fought hard:​​

1. Refresh rate ≥3840Hz (no scanning line appears when shooting videos)
2. Grayscale level 16bit+ (the sunset gradient is not outstanding)
3. The thickness of the protective layer is ≥3mm (hail day can withstand impact)

I have a cold knowledge: the same P6-pitched screen,​​Lamp bead packaging process​​Different costs differ by 30%. COB packaging is more expensive than surface patches, but it can be used for five years without foaming, which is like the difference between a mobile phone film and a tempered film.

Installation and maintenance are the highlight

Don’t think that it’s done after buying it. The most outrageous case I have ever seen - I found that the load-bearing beam was offset after installing the atrium screen in a shopping mall, and finally removed the ceiling and remade it. Now all professional teams need to use it​ ​3D laser scanning​​Modeling is ten times more accurate than manual measurement.

​​Service network needs to be asked clearly:​​

• Is there a spare parts warehouse within 200 kilometers?
• Night fault response time ≤4 hours
• Whether to provide five-year brightness attenuation guarantee

Last year, a stadium project suffered a secret loss. The brightness of the screen dropped to 70% after half a year after installing it. Fortunately, the contract stated that "no less than 85% within three years" was replaced with the lamp beads for free. Remember,​ ​After-sales terms must be written in black and white​​！

Special scenarios need special plans

The advertising screen on the side of the highway is not the same as the one in the mall. The former must be considered:

• Anti-glare coating (prevents drivers from dazzling)
• 30 seconds extreme black screen (traffic management can be cut off remotely in case of an accident)
• Self-cleaning surface (reduce spider web effects)

There is a creative case: a business district makes column screens into spiral shapes, using​​170° visual angle​​The content was clearly visible to pedestrians from all directions, and the passenger flow increased by 15%. Nowadays, high-end projects are customized, just like tailors making suits - fit is more important than brands.

You ask me and answer

Q: How to choose to buy cheap online and buy offline?
A: The key is whether it can be​ ​Quotation with plan​​. The winner of an international airport project has obtained the order by dynamic flow of people and heat analysis. Those who only sell hardware have long been eliminated.

Q: How to judge the actual effect of the screen?
A: Take the regular broadcast materials to the manufacturer​ ​Field trial​​, focus on whether the red dress will turn orange and whether the stock data will be rolling quickly will be distorted.

Q: Which one is worth it, leasing or buying out?
A: The monthly rent of the quick-release box screen ≈ 1.5% of the total price, and it is more cost-effective to rent it for less than two years. But buying out is still reliable for long-term use, just like the difference between renting a house and buying a house.

Editor's opinion: Buying a large screen is like finding a marriage partner. Appearance is important, but life depends on the connotation. It is recommended to go to the manufacturer to see the laboratory, so that you can take pictures of the production line at will and usually don’t play with the virtual ones. remember——​ ​4K seafood advertisements, the one that can see the trembling of shrimps and whiskers is the best product​​！

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