10 ways to recognise the quality of an LED screen
How to Identify the quality of LED screen？
With the development and progress of science and technology in the society, the application range of LED screen is getting wider and wider. At the same time, the number of LED display suppliers is also increasing. This also means that the quality of LED screen varies greatly, and accidents of poor quality LED display screen often occur. So, when we are buying LED display, how do we judge its quality? This article will provide 10 methods for your reference.
1. Brightness and viewing angle
Generally speaking, the brightness of indoor full-colour LED screen is around 800-1200nits, and the brightness of outdoor full-colour LED screen is around 4000-6000nits. Such brightness range is suitable for the brightness of the display in different environments. However, for the LED display screen, not the higher the brightness adjustment the better. Display brightness is too high will not only cause discomfort to the human eye, but also reduce the service life of LED lamp beads. The viewing angle is mainly determined by the encapsulation of the wick module. The size of the viewing angle directly determines the audience of the display, so the bigger the better.
2. Contrast ratio of LED screen
LED display screen contrast ratio measures brightness contrast between brightest and darkest areas, indicating the screen’s ability to produce varying levels of brightness and darkness and reflect depth of field and picture level details. A whitish grey screen with low transparency signals a low contrast ratio. Contrast ratio is typically expressed as a ratio, such as 1000:1 or 5000:1. Higher contrast ratio results in clearer images and brighter colours, while lower contrast ratio results in blurrier images and more muted colours.
3. White balance and colour temperature
White balance and color temperature are crucial parameters in the adjustment of LED screens, which directly affect the accuracy and authenticity of the display effect. The correct white balance can ensure that the displayed white is not biased, pure, and consistent under different brightness. In LED screens, the tone and atmosphere of the overall display screen can be changed by adjusting the color temperature.
4. Uniformity of LED screen
Uniformity refers to whether the LED screen is clean and free of pits and mosaics, and is mainly related to the consistency of LED light brightness and colour. Improving uniformity helps to improve the overall visual impact and viewing experience. Commonly used technical measures include point-by-point correction and backlight uniformity design.
5. Refresh rate of LED display
Refresh rate refers to the number of times per second the LED screen updates the screen, the unit is Hertz (Hz). A high refresh rate can make the dynamic image smoother and reduce drag and blur. Generally speaking, the refresh rate of high-end LED display can reach 1920Hz or even higher.
6. Whether there is a colour block
LED screen colour block refers to the module display and the normal area there is a significant colour difference. The colour transition is based on the module. The phenomenon of colour block is mainly caused by the poor quality of the display circuit board, the poor quality of the IC chip and the unqualified welding process.
7. Square power consumption
The square power consumption refers to the power consumption generated by the LED screen with an area of 1 square meter. The unit is watts. We usually say that the unit of electricity is W/H. The power consumption of LED displays generally has two indicators, one is the maximum power consumption and the other is the power consumption. The maximum power consumption refers to the power consumption of the LED screen at the maximum brightness. The power consumption refers to the power consumption when playing advertising videos, text and pictures. Lower power consumption means lower cost of use and less heat. The generation of heat depends on the current, which directly affects the service life and stability of the display.
8. Reliability of LED display
Reliability refers to the ability of an LED screen to maintain normal operation during long-term use. Methods to improve reliability include using high-quality LED chips and driver circuits, optimizing heat dissipation design, etc. Generally, you can determine the number of times the screen appears during aging by asking the manufacturer for aging records.
9. Packaging and transport
LED screens are valuable items, both in value and weight. The packaging method used by the manufacturer is very important. In general, the box is packed in a single box, and each side of the box should have a protector to cushion. There is little room for movement inside the box during transport. The outer box must be clearly labelled.
10. Safety of LED screen
LED screen consists of multiple modules. Each LED module must be equipped with external grounding protection, and the grounding resistance should be less than 3 ohms. Can withstand 1500V high voltage without breakdown for 1min. Warning signs and slogans should be installed at the high voltage input port and high voltage wiring of the power supply.
conclusion
In summary, through the above 10 aspects, we can identify the quality of LED displays. When we look at apiece of LED display, we will know from which aspects to identify its quality level, so as to achieve the purpose of choosing cost-effective products that suit you. Choosing the right LED display can achieve twice the result with half the effort!