Hey, I'll say, have you ever encountered such embarrassment? When I went to the mall, I saw the advertising screen on the entire wall. The picture was so delicate that even the fluff on the model's face could be seen clearly, and I said in my heart, "How much does it cost?" Turning back, I saw some screens that were as grainy as if they were mosaiced. Why is the gap so big? Today, let’s talk about this small-pitch LED display that makes novices confused. You will definitely become half an expert after watching it!

1. Where is the "small" space in the small spacing?

​​Question: It is said that small spacing is good. What exactly does this spacing mean?​​
To put it bluntly, it is the distance between the light beads on the screen. Like the pixel density of our mobile phone screen,​The smaller the point spacing value, the more delicate the picture​. Now mainstream products can reach P1.2 (1.2 mm pitch) to P0.9, which is more than three times finer than the display screens that used P3 and P4 in the early years!

For example, the same 4K content is displayed:

• The best viewing distance between P1.5-pitch screen is 3 meters away
• P0.9 can be seen clearly at 1 meter away from the P0.9
  This is like the difference between reading a paper book and reading a mobile phone screen.​For every 0.1mm reduction in point spacing, the cost will increase.​, so don’t be fooled by the word “small spacing”, it depends on the specific parameters!

2. These scenes are necessary

​​Q: Can’t install an ordinary LED at the door of my supermarket? Why do you have to have a small spacing?​​
It depends on the usage scenario. Things like the interactive large screen in shopping mall atrium and the data board in corporate exhibition halls that require close viewing,​The grainy feeling of ordinary LEDs can make faces look like mosaics​​. But if used on highway intelligence boards, ordinary spacing screens are enough and they save money.

Here is a knowledge point to focus on:

• ​Conference room scene​: P1.5 spacing is matched with 800cd/m² brightness to ensure that there is no reflection under fluorescent lights
• ​Stage background​: You must choose a refresh rate above 1920Hz, otherwise the camera will be full of scanning lines in one shot.
• ​Monitoring Center​: The low-bright high-gray technology must be brought, and the on-duty staff will stare at it for 12 hours without any eye aches

Last year, a chain brand installed P1.2 spacing screens in 20 stores, and the average customer stay time increased by 3 minutes. Do you think the money is worth it?

3. Guide to avoid pits when purchasing

​​Q: There are many products on the market, how can we not step on the wrong side?​​
Remember these six words - "Three views, two touches and one try":

1. ​​Look at the parameter table​​: Identify hard indicators such as refresh rate ≥1920Hz and contrast ratio ≥4500:1
2. ​Look at the splicing seams​: The gap after the good screen body is spliced ​​is ≤0.1mm, and the fingernails are scratched without lag
3. ​​Look at the heat sink​: The heat dissipation holes of regular products are arranged neatly, and the hand is not cut when touched
4. ​Touch the surface temperature​: Be careful if the temperature difference exceeds 15℃ after working for 2 hours
5. ​Touch flatness​: There is no wavy reflection at a 45-degree angle
6. ​​Trial movie source​: Take a 4K landscape slice and pay attention to the leaf texture and cloud transition

A friend bought a miscellaneous screen with cheap pictures, but he repaired the controller three times in half a year. The maintenance fee was enough to buy another half of the screen. Is this a profound lesson?

4. Maintenance and cold maintenance knowledge

​​Q: Will this thing be installed once and for all?​​
Don't think so! Have you seen the display screen at the door of a hotel that lacks words and drawings? It's probably because of the maintenance. Teach you some tips for extending your life:

• Use a soft brush to clean the dust once a month (remember to power off)
• In the rainy season, turn on the machine for at least 2 hours a day to dehumidify
• When encountering local black blocks, check the signal cable connector first, don’t rush to change the module
• Don't turn on the brightness for a long time, adjust it to 70% of the actual required power-saving

I have heard that there is a theater screen that has been used for 5 years and is like the new one. They do regular dust removal and maintenance every Wednesday morning. We have to learn patience.

5. Future development trends

Now the industry is fighting against two directions:​Larger spacingand​More smarter​. I heard that the laboratory has made samples with a P0.4 spacing, which is almost one-quarter of the finest products now! Some manufacturers have also developed an automatic inspection system, which can be warned three months in advance if the lamp bead is about to break.

But we ordinary consumers should not rush to pursue new products, after all, the prices of new technologies are inflated. After waiting for a year or two, now the P1.0 product sold for 20,000 or 30,000 yuan may be able to be won within 10,000 yuan. Isn’t this good?

I have to say that choosing a small-pitch LED is like finding a partner. You can’t just look at the appearance parameters, but you have to see whether the actual life is appropriate. Like the "military-grade quality" that some merchants brag about, it may actually be ordinary glue filling technology. It is recommended that you visit a few more exhibition halls to take a look, remember​A good picture can speak by yourself​. Finally, I would like to remind you, don’t believe in the nonsense of “lifetime warranty”. How can electronic devices not age? Those who can get a five-year warranty are considered conscientious manufacturers!

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