How to judge the quality of LED display screens
Tags: led, display, screen
Published: 2024-06-11 03:35:25


With the rapid development of LED display technology, a variety of [LED display screen products](https://sostron.com/products/) have emerged on the market. For consumers, how to judge the quality of LED display screens has become an important issue. This article will teach you how to identify the quality of LED display screens from the aspects of flatness, brightness and viewing angle, white balance effect, color reproduction, mosaic, dead spot phenomenon and color block phenomenon. 

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/slmvewxos11zjcpneeua.png)

1. Flatness

Flatness is one of the important indicators to measure the quality of LED display screens. The surface flatness of high-quality LED display screens should be within ±1mm, so that the displayed image will not be distorted. Local convexity or concaveness will cause dead angles in the viewing angle of the display screen, affecting the viewing experience. The quality of flatness is mainly determined by the production process. Advanced production equipment and strict quality control are the key to ensuring flatness. [What should I do if the LED display screen cannot load an image? ](https://sostron.com/led-display-loading-image-how-to-do/)

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/fu9zkvnamvg2vi0azaqj.png)
2, Brightness

Brightness and viewing angle are also important factors in judging the quality of LED display screens. For indoor full-color screens, the brightness should be above 800cd/m², while the brightness of outdoor full-color screens should be above 5500cd/m² to ensure that images can be displayed clearly in different environments. In addition, the size of the viewing angle directly determines the number of audiences of the display screen. Generally speaking, the larger the viewing angle, the better. The quality of brightness and viewing angle is mainly determined by the quality of the LED tube core. High-quality LED tube cores can provide higher brightness and wider viewing angles. [Here is the knowledge about nit brightness. ](https://sostron.com/knowledge-of-nit-brightness/)

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/xnux31badezmz2vuycxb.png)
3, White balance effect

The white balance effect is an important indicator to measure the color accuracy of LED display screens. Under ideal conditions, when the ratio of the three primary colors of red, green and blue is 1:4.6:0.16, the display screen should show pure white. If the actual ratio is deviated, there will be a deviation in white balance, and the common problem is blue or yellow-green. The quality of white balance is mainly determined by the control system of the display screen, and the tube core also affects the color reproduction. [Provide you with a guide to purchasing LED display control systems. ](https://sostron.com/led-display-control-system-purchase-guide/)

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/55bbvrh4kfprvahlr9fa.png)
4, Color

Color reproduction refers to the ability of the LED display screen to restore the color of the original image. A high-quality LED display screen should be able to accurately restore the color of the original image, so that the audience can get a real visual experience. The quality of color reproduction depends not only on the quality of the LED tube core, but also on the control system and color calibration technology of the display screen.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/3dtgh0injtlp0jr1e2ig.png)
5, Mosaic and dead point phenomenon

When purchasing an LED display screen, consumers should also pay attention to check whether there is mosaic and dead point phenomenon. Mosaic refers to the small square blocks that are always bright or always black on the display screen. This is due to the poor quality of the connectors used in the display screen. Dead points refer to single points that are always bright or always black on the display screen. The number of dead points is mainly determined by the quality of the tube core. These defects will seriously affect the display effect and service life of the display screen.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/2u2jgrg36jd1xna8vzvc.png)
6. Color block

The color block phenomenon refers to the obvious color difference between adjacent modules, and the color transition is based on the module. The color block phenomenon is usually caused by the poor control system of the display screen, low grayscale level or low scanning frequency. The color block phenomenon will cause the image to look incoherent and reduce the visual experience.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/b9z0zbq48omuob2ym4ek.png)
In short, when choosing an LED display screen, consumers should comprehensively evaluate its quality from multiple aspects. In addition to the above-mentioned factors such as flatness, brightness and viewing angle, white balance effect, color reproduction, mosaic, dead point phenomenon and color block phenomenon, the durability, energy saving performance and after-sales service of the display screen should also be considered. Through comprehensive evaluation and comparison, consumers can choose high-quality LED display products that meet their needs.

Thank you for watching. I hope we can solve your problems. Sostron is a professional [LED display manufacturer](https://sostron.com/about-us/). We provide all kinds of displays, display leasing and display solutions around the world. If you want to know: [LED companies use VR technology to layout the smart education market.](https://dev.to/sostrondylan/led-companies-use-vr-technology-to-layout-the-smart-education-market-3hha) Please click read.

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