How to choose indoor LED display? These considerations must be taken into account
At present, more and more led screens are being used indoors, especially in large hotels and supermarkets. So large hotels to choose indoor full color screen requirements?
In indoor environment, the area of more than 5 ㎡ large full-color electronic display mainly ordinary display, DLP (digital liquid crystal display) and LED display options.
The advantages of the rear projection display are small pixels and high definition, but the disadvantages are low brightness, small Angle of view and short life of the lens lamp (only a few thousand hours). The advantages of plasma splicing are small pixel points, high definition, but the disadvantages are patchwork, the current minimum patchwork can reach 1mm.
Rear projection and plasma display are suitable for close viewing.
The advantages of led display are high brightness, no patchwork, the disadvantages are coarse pixel particles, low definition. At present, the commercial indoor full-color led display has a density of z to P4, namely 62500 pixels/m 2. Led display is suitable for indoor places with long viewing distance.
When choosing LED indoor display screen, the following aspects should be considered.
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) pipe core. Good core can ensure the quality of LED
(3) packaging form. The LED surface of indoor LED display screen has several forms, such as single light, sub-table sticker, three-in-one table sticker and three-in-one table sticker. The appearance is also different. The advantages of the table stick package is a large perspective, good luminous consistency, easy to automatic welding processing, is the mainstream of full-color LED screen, but now the price is relatively high; Single light Angle is relatively small, brightness is slightly higher, the price is lower. Sub-table stick is also a kind of single light. Single light and sub - table paste are relatively cheap, is a transitional product.
(4) density. Due to the indoor full-color LED chip heating larger, control circuit density is higher, so now the commercialization of full-color screen point density can not be done very high.
(5) drive mode. The driving mode of indoor full-color LED display is constant current driving, and dynamic scanning mode is adopted (mainly 1/4, 1/8 and other scanning modes). In the case of the same core, 1/4 of the scanning circuit to be more, the brightness is higher.