There Are Too Many Kinds Of Led Displays, How To Classify?

First of all, from the color to divide: monochrome, two-color, three-color (full-color) led display:

1, monochrome refers to the display screen has only one color of luminescent material, mostly single red.

2. The two-color screen is generally composed of red and green LED diodes.

3, three-color (full-color) screen, composed of red, green (wavelength 570nm), blue; and true color, composed of red, pure green (wavelength 525nm), blue.

Secondly, according to the environment: indoor, outdoor and semi-outdoor LED displays:

1, semi-open air curtain between indoor and outdoor, high brightness, can be used outdoors in the sun, the screen body is sealed, generally on the roof or window.

2, the indoor screen area is generally very small (more than a dozen square meters), the point density is high, in direct sunlight or ambient lighting, the viewing distance is a few meters away, because it is indoors, so there is no need to open air, the screen body can not have a sealed waterproof function. The indoor display dot matrix module is the mainstay, because the display brightness requirements for indoor use are not high;

3, outdoor display area is small tens of square meters, large hundreds of square meters or even thousands of square meters, point density is thin (mostly 1000-4000 points per square meter), luminous brightness in 3000-6000cd / square meter (different orientation, brightness requirements are different), in direct sunlight conditions, viewing distance tens of meters, because it is outdoor, so must use waterproof box, on the screen has a good wind, rain and lightning protection ability.