Hey, dear readers, have you ever thought about why the price of LED screens is several times different? Some of them are installed in the mall for three years without breaking, while others are used for half a year and they are snowflakes? Let’s talk about this today, and I guarantee that you will slap your thighs after listening to it - it turns out that the tricks are hidden here!

1. Look at the gap from the principle of luminescence: Don’t be fooled by the surface brightness

The core component of the LED screen is the light-emitting chip. For example, just like a mobile phone camera has the difference between Sony IMX989 and ordinary CMOS, LED chips are also divided into different levels. A good chip can do it​ ​Brightness uniformity >95%​​, the poor may be less than 80%. It's like "very bright", some are like the noon sun, some are like the afterglow in the evening.

Here is a real case: a shopping mall has installed two advertising screens at the same time, one with an ordinary chip, with a nominal brightness of 4500nit； The other one uses a high-end chip, nominally 4000nit. As a result, in the sunlight during the day, the nominal brightness looks clearer. Why? because​ ​Brightness uniformity​​and​​Color Reduction​​That's the key!

2. The trick in refresh rate: Don’t just look at the size of the numbers

Nowadays, manufacturers like to claim "3840Hz ultra-high refresh rate", but there are tricks here. Just like the touch sampling rate of a mobile phone screen,​ ​Effective refresh rate​​and​​Theoretical value​​It may be a thousand miles apart. If you really need to look at the actual effect, you have to take a slow motion video of your phone in front of you - if you have no stripes, that is the real skill.

The most exaggerated example I have ever seen: a rental screen marked with 1920Hz, and the camera is full of horizontal lines when it is actually performed. Later, after checking, it turned out that the driver IC cut corners, and the actual effective refresh rate was less than 960Hz. So,​ ​Depending on the parameters, we need to combine them with actual measurement results​​, just looking at numbers is easy to be fooled.

3. The secret of protection level: IP65 is not a panacea

Many businesses regard IP65 protection as a selling point, but they have a lot of knowledge here. It is also IP65 certified. Some screens can be used on the beach for three years without stainless steel, while others are installed on the viaduct and then water will be infiltrated in the second half of the year. The key is​ ​Weather resistance of sealant​​and​​The rationality of the heat dissipation structure​​。

For example, LED screens installed in stadium fences must withstand the sun and rain and football collisions at the same time. We disassembled an old screen that has been used for five years and found it​ ​Box joints​​Three layers of seals were used: silicone pad + waterproof glue strip + nanocoating. Ordinary products often have only a single layer seal, which is more than twice the cost.

4. Maintenance cost hides minefields: buy cheap and expensive

The easiest pit for beginners is to ignore it​​Post-maintenance cost​​. Some screens are cheap, but they have to change the power module every few days ； Some are more expensive but can be repaired for five years. Here are some tips for you:​ ​Power failure rate​​and​​Module replacement convenience​​。

For example, the popular rental screens nowadays can do good products.​​Quickly disassemble and assemble a single module in 15 seconds​​, even girls can operate with one hand. If you disassemble a module for inferior products, eight screws must be screwed, and the frames can easily be scratched after disassembling. After calculating the labor cost, the difference can be made up in half a year.

5. The mystery of intelligent dimming: Not all automatics are easy to use

Now it is said that brightness is automatically adjusted, but the technical gap here is getting bigger. True smart dimming can be recognized​ ​Ambient color temperature​​, for example, the cool tone is automatically enhanced under warm lights, and the red proportion is automatically increased on cloudy days. Instead of simply and roughly, the overall lightening and darkening.

A restaurant owner complained to me: The screen he installed was quite bright during the day, but it suddenly became dazzling every evening, destroying the dining atmosphere. Later I found that low-end light sensing elements were used, which could only detect changes in brightness and could not recognize changes in color temperature. So,​ ​Multi-spectral sensor​​It is the standard configuration for high-end screens.

If I ask me, choosing an LED screen is like finding a partner - just looking at appearance (appearance) and family background (price) is not enough, it depends on "inner beauty" (chip quality) and "living ability" (maintenance cost). Next time someone brags about how good the parameters are, remember to ask three regressions:

1. How much is the actual measurement of brightness uniformity?
2. Are there three-year failure rate statistics?
3. What tests have been done in extreme weather?

Remember, a good LED screen should be​​Use worry-free, comfortable to watch, and reassuring to cultivate​​. Those invisible details are the key to truly widening the gap!

for more product information and pricing, please contact us .