selecting LED display screen in large hotels and supermarkets

At present, more and more LED displays enter the interior, especially in large hotels and supermarkets. So big

In the indoor environment, the large-scale full-color display screen with an area of more than 5m2 mainly includes ordinary rear projection, DLP (digital liquid crystal rear projection) and LED display

There are three options on the screen.

rear projection displays have the advantages of small pixels and high definition, while the disadvantages are low brightness, small viewing angle and short lens lamp life (only a few thousand)

Hours). The advantages of plasma splicing are also small pixels, high definition, the disadvantage is that there is seam, the minimum seam can be up to 1 mm.

Rear projection and plasma display are suitable for close viewing.

&The advantages of LED display screen are high brightness and no seam. The disadvantage is that the pixel particles are coarse and the definition is low. Commercial indoor

The highest density of color LED display is P4, that is 62500 pixels / m2. LED display screen is suitable for viewing indoor places with a long distance.

when selecting LED indoor display screen, the following aspects should be considered. [LED display manufacturer]

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

② die. As with the outdoor full-color screen, it is generally recommended that the blue tube and green tube of indoor full-color screen should adopt the core of SLM, and the red tube should be used

The tube core of Guanglei or Guangjia. It is recommended to use Nippon and Cree for high-end products.

 ③ package form. The LED surface forms of indoor full-color LED display include single lamp, sub surface sticker, three-in-one surface sticker and three in one surface sticker

Several, the appearance is not the same. The advantages of surface mount package are large viewing angle, good luminous consistency and easy automatic welding processing. It is full-color LED

Screen mainstream products, but now the price is relatively high; single light angle of view is relatively small, brightness is slightly higher, the price is lower. In fact, sub surface post is also single

A kind of lamp. Both single lamp and sub surface sticker are relatively cheap and are a transitional product.

 ④ density. Due to the high heat output of indoor full-color LED chip and the high density of control circuit, the spot density of commercial full-color screen is now very high

We can’t do it very well. There are mainly P5, P6, p7.62, P8, P10 led screen.and so on.

 ⑤ drive mode. The driving mode of indoor full-color LED display screen is constant current drive and dynamic scanning mode (mainly 1 / 4, 1 / 8)

And so on). In the case of the same die, the circuit used for quarter scan is more and the brightness is higher.

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