REFRESH RATE is a measure of how many times per second redraws the image on the screen. It is measured in Hertz which is commonly abbreviated as “Hz”. For example, a refresh rate of 1920Hz means the image is refreshed 1920 times in one second. High refresh rate LED displays tend to give users a satisfying visual experience.

Indoor P2.5 High Refresh Rate LED Column Display-NSE LED

Normally, people are confused with the frame rate (FPS or frames per second). They are indeed very similar and both refer to the numbers of times a static image is displayed per second, but frame rate usually refer to the content itself whereas the refresh rate refer to the video signal or display.

Let's Focus on Refresh Rate

If we look back to about two decades ago changing or tweaking refresh rates on CRT monitors was an element of optimising the monitor's video smoothness. In essence a low refresh rate would cause the video display on the CRT monitor to flicker which could at times be picked up by the naked eye. Setting higher refresh rates would effectively eliminate flickering or reduce the level of flicker. Modern day LED video displays or even flat panel LCD monitors are by default loaded with higher refresh rates and the flicker is so minimal that viewers would not be able to pick-up the flicker. According to the technical geeks at NSE who are among the top LED display industry leaders a higher level of refresh rate will result in much smoother pictures.

It is due to this that high-end LED monitors that are primarily designed for gaming tend to advertise high refresh rates as part of their marketing strategy that range anywhere from 144 Hz to 240 Hz. These refresh rates are high and considered to be a significant leap from the previous 60 Hz or 75 Hz refresh rates of previous years. The maximum refresh rate that a video display is able to muster largely depends on the monitor type. According to the spokesperson from NSE cheaper monitors in general support lower refresh rates compared to expensive monitors and this holds true even for LED displays. To explain this in simpler terms, the refresh rates for even LED displays have a significant impact on ‘frames per second' and the amount of LED display flicker. This in turn, has an impact on the quality of the images that appear on screen.

Anybody who have used a computer or watched a video would have heard the term ‘refresh rate' and most would have ignored it from the ‘get-go'. However the refresh rate is a critical factor when it comes to video displays, especially LED video displays as it involves the number of times that a display updates its images every second. A simple example of refresh rates can be explained by taking a 60 Hz refresh rate monitor or video display and know that the display updates the images on the screen 60 times each second. This article is all about refresh rates and will get technical at some parts, but not to worry, the article explains technical aspects of refresh rates in the layman's format.

Difference Between High Refresh Rate And Low Refresh Rate

The more times the screen is refreshed, the smoother the images are in terms of motion rendering and flicker reduction.

What you see on the LED video wall is actually multiple different pictures at rest, and the motion you see is because the LED display is constantly refreshed, giving you the illusion of natural motion.

Because the human eye has a visual dwelling effect, the next picture follows the previous one immediately before the impression in the brain fades, and because these pictures are only slightly different, the static images connect to form a smooth, natural motion as long as the screen refreshes quickly enough.

Below with a picture showing a difference of the LED screens with low refresh & high refresh rate:

The high refresh rate LED display is a guarantee of high-quality images and smooth video playback, helping you to better communicate your brand and product messages to your target users and impress them.

Conversely, if the display refresh rate is low, the image transmission of the LED display will become unnatural. There will also be flickering “black scan lines”, torn and trailing images, and “mosaics” or “ghosting” displayed in different colors. Its impact in addition to video, photography, but also because tens of thousands of light bulbs flashing images at the same time, the human eye may produce discomfort when viewing, and even cause eye damage.

Normally, we see on the datasheet of a LED screen, it shows 1920Hz or 3840Hz. Above 1920Hz we will consider as high refresh rate. which fits to most of the high-speed videos source.

Generally speaking, 1920Hz refresh rate, the human eye has been difficult to feel the flicker, for advertising, video viewing has been sufficient.

LED display refresh rate of not less than 3840Hz, the camera to capture the picture screen stability, can effectively solve the image of the rapid motion process of trailing and blurring, enhance the clarity and contrast of the image, so that the video screen delicate and smooth, long time viewing is not easy to fatigue; with anti-gamma correction technology and point-by-point brightness correction technology, so that the dynamic picture display more realistic and natural, uniform and consistent.

Conclusion

Whether you want to use an indoor or outdoor advertising LED screen for branding, video presentations, broadcasting, or virtual filming, you should always choose an LED display screen that offers a high screen refresh rate and synchronizes with the frame rate recorded by your camera if you want to get high-quality images from the screen, because then the painting will look clear and perfect.

NSE LED launches indoor P2.5 high refresh rate LED column display. If you are interested in our products, please feel free to contact us!