LED display segment varied , generally classified according to the following ways :
( A ) by the use of environment is divided into indoor, outdoor and semi-outdoor
Indoor screen area is generally from less than 1 square meter to more than ten square meters, point density is higher, in a non- direct sunlight or lighting environments , viewing distance of a few meters outside the body of the screen does not have the waterproof seal .
Outdoor screen area is generally from a few meters to tens or even hundreds of meters, point density more dilute ( mostly 1000-4000 points per square meter ) , brightness at 3000-6000cd / sqm ( facing different brightness requirements are different ) , in the sun direct conditions, viewing distance of tens of meters outside the screen body with good wind resistance to rain and lightning protection capability.
Semi- outdoor screen ranged between indoor and outdoor , with high brightness , sunlight outdoors in non- use , screen body has some seals , generally under the eaves or shop window .
( 2 ) divided by color monochrome , two- color , three-color ( full color )
Monochrome display is only one color light-emitting materials , mostly single red , can also be used in some special occasions yellow-green ( eg funeral ) .
Dual color screen is usually red and yellow-green light-emitting material.
Three -color screen is divided into full-color (full color), from red , yellow and green ( wavelength 570nm), blue composition and true color (nature color), from red , pure green ( wavelength 525nm), blue composition.
( 3 ) Press the control or use of synchronous and asynchronous
LED display means synchronously work basically the same as a computer monitor that at least 30 fields / sec update rate corresponding bit map on the monitor real -time mapping the computer image, usually a multi- gradation color display ability , can achieve the effect of multimedia advertisements .
Asynchronous mode refers to the LED screen has the ability to store and AutoPlay , edited on a PC text and grayscale images without additional network interfaces through the serial port or an incoming LED screen, LED screen then automatically play offline , generally no more ash degree display capability , mainly used to display text information, you can multi-screen networking.
( 4 ) or pixel by pixel density diameter divided
As households internal display with LED dot matrix module specification more unified it is usually classified according to the diameter of the pixel modules are : ∮ 3.0mm 60000 pixels / sqm ∮ 3.75mm 44000 pixels / sqm ∮ 5.0mm 17000 pixels / sqm
Outdoor screen pixel diameter and the pixel pitch is currently no uniform standard , the number of pixels per square meter around 1024 points , 1600 points, 2000 points , 2500 points, 4096 points and other specifications.
( 5 ) Press the display performance can be divided into
Video Display: full color display is generally
Text Display: usually single color display
Graphic display : generally dual color display
Display market : generally digital tube or single-color display ;
( 6 ) can be divided by display
LED Digital Display: 7 segment digital code , suitable for production of the clock screen, interest rates screen , display digital electronic display.
LED dot matrix graphic display: display device is composed of many evenly composed of light-emitting diode dot matrix display module, suitable for broadcast text , image information.
LED video display: display device is composed of many light-emitting diodes that can display video, animation and other various video files .