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How To Choose A Good Quality Led Display?
Sep 13, 2018

At present, more and more led displays are entering the interior, especially large hotels and large supermarkets are favored by advertisers. So what are the requirements for large-scale hotels to use indoor full-color screens?


In the indoor environment, the large-scale full-color electronic display with an area larger than 5m2 mainly has three options: ordinary rear projection, DLP (digital liquid crystal rear projection) and LED display.

The advantages of the rear projection type display screen are small pixel points and high definition, and the disadvantages are low brightness, small viewing angle, and short life of the lens lamp (only a few thousand hours). The advantage of plasma splicing is also that the pixel points are small and the definition is high. The disadvantage is that there are seams. At present, the smallest seam can reach 1mm.


The rear projection and plasma display are suitable for closer viewing.

The advantage of the led display is that the brightness is high and there is no seam. The disadvantage is that the pixel particles are thicker and the definition is lower. At present, the density of the commercial indoor full-color LED display screen is P4, which is 62,500 pixels/m2. The led display is suitable for viewing indoor places that are far away.


When using the LED indoor display, it is mainly considered from the following aspects.

1 real pixel and virtual pixel. Like the outdoor full color screen, the number of pixels in the indoor full color screen is also divided into real pixels and virtual pixels.

2 dies. Good die ensures the quality of the LED

3 package form. The LED surface of the indoor LED display has a single lamp, a sub-surface sticker, a three-ply-one-surface sticker and a three-in-one surface sticker, and the appearance is also different. The advantages of surface-mount package are large viewing angle, good luminous consistency, and easy automatic welding processing. It is the mainstream product of full-color LED screen, but now the price is relatively high; the single-lamp viewing angle is relatively small, the brightness is slightly higher, and the price is lower. The sub-surface sticker is actually a kind of single lamp. Single and sub-stickers are cheaper and are a transitional product.

4 density. Since the indoor full-color LED chip generates a large amount of heat and the control circuit has a high density, the dot density of the commercial full-color screen cannot be made high.

5 drive mode. The driving mode of the indoor full-color LED display is constant current driving, which adopts dynamic scanning mode (mainly 1/4, 1/8, etc.). In the case of the same die, the 1/4 scan circuit requires more, and the brightness is higher.


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