Have you ever encountered this situation? When watching the large screen at the concert, I always feel that the screen is distorted. When I watch short videos, the LED advertising screen always flashes. Even when I walk on the road, I always feel uncomfortable when I see the display screen in the mall... These may be related to the refresh rate of the LED screen! Today we will talk about this most easily overlooked but particularly important parameter for novices - especially those novice who want to buy LED screens but don’t know how to choose. We need to take a good look.

Let’s talk about what the refresh rate is. Simply put, the refresh rate is the number of times the screen updates the screen per second. The higher this value, the smoother the picture will be. It’s like turning a comic strip, the faster you turn it, the more realistic the animation effect is, right? Nowadays, the common specifications on the market include 1920Hz and 3840Hz, but many novices don’t know what these numbers mean.

So how do you view the refresh rate? Here are three practical methods:

1. ​​Look at the product parameter list​​: Regular manufacturers will clearly mark the value such as "refresh rate ≥1920Hz".
2. ​​Observation method of naked eyes​​: Use your phone to shoot videos against the screen. If black stripes appear, it means that the refresh rate is not enough.
3. ​​Professional instrument testing​​: Generally, we have to find technicians to measure this with an oscilloscope, and we ordinary people can use the first two methods.

A few days ago, a friend asked me: "Why does the LED screen I bought have a parameter that says 1920Hz, but it still feels stuck when I use it? "This question is well asked! In fact, there are three common misunderstandings:

• ​​Only look at the highest value and not the lowest value​​: Some screens can reach up to 3840Hz, but the default setting may be only 960Hz.
• ​​Ignore the supporting equipment​​: Even if the screen supports high flash, it will be useless if the signal source output is not enough.
• ​​Ambient brightness influence​​: The outdoor screen is too bright during the day and makes people feel that the refresh rate is not enough

Speaking of application scenarios, here is a comparison table that you can collect:

Here's the point​​Low bright high gray technology​​. Where is this skill? It can ensure that the screen still has delicate color transitions at low brightness. For example, when the brightness of an indoor LED screen is adjusted to 800cd/m², ordinary screens may suffer serious losses in grayscale, but screens with this technology can still maintain a complete 256-level grayscale. It’s like taking photos at night. When ordinary phones take photos are all noise, while professional cameras can retain details. Isn’t it amazing?

Many newbies will ask: "Is the higher the refresh rate, the better? "This issue depends on the situation. If you use it to play static images at a fixed position, 960Hz is actually enough. But if it is used in concerts and sports events, which require quick action capture, it must be 3840Hz. This is like driving 60 yards is enough, but it is only 200 yards to go to the track.

Recently, there was a real case: a business district installed a curved advertising screen with a height of 10 meters. At first, in order to save money, I chose a model with a low refresh rate. As a result, the screen flashed wildly under the sun during the day, and passers-by said they were dizzy when they looked. Later, I changed to the high-brush model and the complaints were immediately reduced by 90%. You see, this is a typical lesson about spending a small amount of money to do bad things.

Speaking of maintenance, here are three things to remind everyone:

1. ​​Clean the heat dissipation holes regularly​​: High temperature will cause unstable refresh rate
2. ​​Check signal line connection​​: Loose interface will reduce refresh rate
3. ​​Update firmware in a timely manner​​: The manufacturer will optimize the display effect through software upgrade

Editor's opinion: When choosing an LED screen, don't just look at the price and size. The refresh rate parameter is definitely worth your extra budget of 200 yuan. Especially when used in places with large traffic, high refresh rate can not only improve the visual effect, but also reduce customer complaints caused by visual fatigue. Remember, the key to a good screen is not how dazzling it is when it is brightest, but how smooth and stable it is when it is darkest.

for more product information and pricing, please contact us .