How to choose a great LED display?

China has developed a very advanced technology in the world to produce LED displays. A few years ago, people were still questioning about the technology of indoor P3, which was the narrowest pixel pitch in the world. However, nowadays there are many places that have already installed P1.5 LED displays. And the performance of those narrow pixel pitch LED display products is amazing. So, there is no doubt that the LED display technology in China has improved a lot. But we still can see there are many LED displays that have performance not so good. Now we have a question, how to choose a great LED display product.

When it comes to the LED display quality, many people think that the LED chip matters the most. So, they will ask for a good LED chip like Epistar. However, if you visit the LED encapsulation factory, you will find the encapsulation of the LED needs many materials and also has many processes. Obviously, the LED chip is very important to the LED. But if the LED encapsulation manufacturer does not handle well the other materials and the processes of the encapsulation, the LED will also get problems. Meanwhile, the LED chip manufacturers also have improved their technology a lot. For example, Silan LED chips have got a great reputation in the market. Therefore, instead of focusing on the brand of LED chips, it will be safer to choose a good LED brand. If you choose a good LED brand and a LED encapsulation manufacturer), your LED quality can be guaranteed. That is because a good LED encapsulation manufacturer such as Multi-Color, Nationstar will be very strict to control their quality. After you choose the LED encapsulation brand, you can ask for more details. To ensure the stability of the LED, you can ask the suppliers to use a big LED chip with gold bonded wire.

If you are in the business events, you will find sometimes the whole panel is black without showing anything. That problem happens mainly because of the poor quality of the signal cable and the power supply. To ensure the stable performance of the LED displays, you need to make sure the power cable, signal cable, power supply, and the connectors have good quality.

If your screen is outdoor advertising LED display, you will find that heat dissipation is very important. Many screens have very bad color uniformity. Bad quality LEDs have bad white balance. And poor heat dissipation performance will also cause bad white balance. Because in different temperature conditions, the brightness attenuation of R, G, B LED is different. Especially when the temperature is over 35 degrees, different LEDs have very different attenuation, so different individual LED will have different brightness and wavelength. To have a good heat dissipation, first of all, the cabinet design must consider the factors to dissipate the heat. Secondly, the external cooling system is necessary if the temperature is too high. Meanwhile, for outdoor advertising LED display, the waterproof and dustproof performance is also very important. Many screens have problems because the water leaks inside the panel and cause problems. What’s more, if your panel has a very good dustproof design, it will also extend the lifespan of the screen.

If your screen is with a pixel pitch less than 5mm, you need to think about its grayscale. Normally, each panel only has one receiving card. When the pixel pitch is less 5mm, it means each receiving card will carry more pixels. Although the receiving card is still able to drive the panel, it will not have a great performance. There are two ways to increase the grayscale. First, to use a high-end driver on the PCB. The high-end driver can not only increase the grayscale but also the refresh rate. Second, to use more receiving yards for each panel.

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