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2026-03-28 193
Last year, the scene of a corporate conference room overturning was still vivid in my mind - the purchaser spent 380,000 yuan to buy a set of P1.2 small-pitch screens, but when reading documents from 3 meters away, text sticking appeared. Later I found out it was Insufficient refresh rate causes motion blur , this money was spent more unjustly than Dou E! Today I will break it down and talk about how to avoid these pitfalls.
· Pixel density ≠ sharpness
The P1.5 spacing is enough in the control room, but it will become a blur when placed in the exhibition hall. There is a counter-intuitive formula: Best viewing distance (meters) = pixel pitch (mm) × 2.5 . For example, the P1.2 screen is not difficult to read from 3 meters away.
· Brightness traps kill people
4000cd/m² screen for conference room? Wait until employees collectively wear sunglasses to work! Actual measured data shows: 800-1200cd/m² indoor screen improves visual comfort by 73% in natural light environment。
| Reliable manufacturer | Thunder warning | |
|---|---|---|
| production cycle | 7-15 days (customized on demand) | Known as "same day delivery"" |
| Warranty terms | Dead light rate<0.01‰ | Vaguely write "in line with national standards"" |
| Test report | With CMA certification number | Only photoshopped renderings |
When purchasing, a government command center insisted on a certificate issued by a third party. 72 hours aging test video , and as a result, 40% of the bidders were screened out. Later, the P1.0 small-pitch screen was installed, and the dead light rate was only 0.0008% after three consecutive years of operation.
· Thermal design determines life and death
The most amazing solution I have ever seen: make the cooling fins into a dragon skeleton. The temperature rises and drops by 15℃ , and save 30% maintenance space. Remember this formula—— Box thickness (cm) ≥ pixel spacing (mm) × 1.2。
· Signal transmission anti-pit table
| Transmission method | Transmission distance | Applicable scenarios |
|---|---|---|
| HDMI 2.0 | ≤15 meters | small meeting room |
| Optical fiber transceiver | ≤300 meters | sports venues |
| Wireless screencasting | ≤10 meters | temporary exhibition stand |
At an exhibition site, a wireless solution was used to transmit 4K signals, but the result was stuck in PPT. After switching to optical-electrical hybrid cable, Transmission stability is directly maximized , the packet loss rate dropped from 2.3% to 0.007%.
Now you know where to buy it? Remember, a good screen is like finding a partner—the parameters are the fundamentals, and the service is the way to live. The next time you see a highly hyped salesperson, you will ask three questions: Can you issue a steel-stamped test report? Do you dare to sign a betting agreement on the number of dead lights? Do you dare to go to the installation site to see the actual effect? After three moves, the real and fake Li Kui will be revealed immediately!
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