Ouch hey! The bosses who read this article are considered to be looking for the right person! Have you been dazzled by various display advertisements recently? What are P2.5, 3840Hz refresh rate, common-yin drivers... These professional terms sound like a big deal, right? Don’t panic, let’s break it up and say, and you will be able to sort out the tricks after reading it. By the way, my cousin in my hometown asked me last week: "I want to install a large screen at the entrance of the mall, how can I choose not to get into a pitfall? "

1. Find out the demand first and then pay for it, and the money will be worth it.

​​Soul-Trial Question: Are you going to use your large screen to watch movies or advertise? ​ ​
Don't be led by the salesman! We need to understand our needs first:

• ​​Use scenarios​​: Outdoor advertising screens must withstand the sun and rain (it depends on IP65 protection level), and the stage rental screens must be light and easy to disassemble
• ​​Viewing distance​​: Looking at the P4 screen at 5 meters away is like looking at the mobile phone screen, with a clear graininess. Teach you a formula: pixel spacing (mm)×1000=optimal viewing distance (mm)
• ​​Budget scope​​: Both 100,000 and 1 million screens can broadcast videos, the difference is like Santana and Porsche - the key depends on whether you want face or inner strength

To give a real case: Last year, the owner of a chain hot pot restaurant bought a second-hand screen with a cheap picture, but the screen was black as soon as the rainy season arrived, and the repair fee was more expensive than buying a new screen. So,​ ​Buying a large screen is like buying an air conditioner. You can't just look at the price, but you have to look at the long-term use cost.​​。

2. Don’t focus on these three indicators.

​​The question is: Which of the parameters mentioned by sales is the most important? ​ ​
It's enough to remember these three gold indicators:

1. ​​Refresh rate ≥1920Hz​​: This number is low, all the videos taken are ripples, and I can't even post them on WeChat Moments
2. ​​Intelligent brightness adjustment​​: The indoor screen 800-1200cd/m² is just right, and you have to rush to 4000cd/m² outdoors to compete with the Sun
3. ​​Grayscale 16bit+​​: This determines whether the color transition is natural, just like the difference between 1080P and 4K on mobile phone screens

Once, a customer asked me to cry with a test report, saying that the screen he bought could not be seen clearly during the day. After checking, I found out that the brightness of the outdoor screen is only 2000cd/m², and the screen of the mobile phone is not bright yet. So,​ ​Parameter table is not a decoration, it depends on the key items​​。

3. The competition of procurement channels, which one is the most worry-free?

Here is a real comparison table for you:

Let me tell you about the inside story of the industry: Some middlemen sell engineering tail products as new products, and this kind of screen control card may be locked. Last month, a customer bought this kind of screen, but the system was upgraded and turned into a brick. So,​ ​It is much more reliable to find manufacturers with a monthly output of more than 10,000 square meters than to find a second-deao dealer.​​。

4. 6 questions to ask before signing a contract

Don't rush to sign! Leave these problems to sales:

1. Is the warranty period full screen or partial parts warranty? (The warranty duration of control cards, power supplies, and lamp beads may be different)
2. Is the installation and debugging package not included? The lifting fee in old communities may be more expensive than screens
3. Is there any international certification like ISO9001? (This is the hard threshold for quality)
4. Can the software system be upgraded for life?
5. How long is the fault response time? Some manufacturers say they come to the door 24 hours a day, but they end up being abroad...
6. Are there any successful cases to examine?

I remembered that there was a gym owner last year who did not have the installation terms in the contract, but the big screen was lying in the warehouse for three months. Later, I added money to ask someone to install it, and the opening time was delayed. ​ ​Written clearly in black and white, a hundred times better than verbal promises​​。

5. My heartfelt advice

Buying a large screen is like finding a partner - just looking at a look is not good, but looking at the inner world. I particularly value these three points:

1. ​​R&D strength​​: It must be a nationally certified high-tech enterprise, and the patent certificates are thicker than the Xinhua Dictionary
2. ​​Production scale​​: The workshop is not as big as a football field, so we have to consider whether the production capacity is reliable.
3. ​​Global Services​​: It can be exported to manufacturers in more than 110 countries, and the quality control is absolutely not bad

I saw a few days ago that I was quite interesting: now 87% of high-quality displays are flowing to picky markets such as Japan and South Korea. What does this mean? Other people’s standards are the industry’s weather vane! So,​ ​I can't make any mistakes in identifying the manufacturers that supply international major projects.​​。

What are your personal opinions? I think buying a large screen now is the same as buying a smartphone ten years ago - the technology iteration is too fast, and we must find a manufacturer that can continue to upgrade. Those who are still selling old technology five years ago will sooner or later be eliminated. Remember,​ ​A good screen can speak by itself, the key is to find a seller who can tell the truth​​！

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