(1) is divided into indoor, outdoor and semi-outdoor according to the use environment.
Generally, the indoor screen area ranges from less than 1 square meter to more than1square meter. Indoor LED display screen is used in indoor environment. This kind of display has moderate brightness, large viewing angle, close color mixing distance, light weight and high density, and is suitable for close viewing.
Generally, the outdoor screen area ranges from several square meters to dozens or even hundreds of square meters, with sparse dot density (mostly 2500- 10000 points per square meter) and luminous brightness of 5500-8500 CD/ square meter (different directions require different brightness). It can be used in direct sunlight with a viewing distance of tens of meters. The screen body has good wind, rain and lightning protection capabilities.
The semi-outdoor screen is between outdoor and indoor, with high luminous brightness and can be used outdoors without direct sunlight. The screen has a certain tightness, usually under the eaves or in the windows.
(2) According to color, it can be divided into monochrome, bicolor and tricolor (full color).
Monochrome refers to the luminescent material with only one color on the display screen, mostly single red, and yellow-green can also be used in some special occasions (such as funeral parlours).
The two-color LED display screen consists of red and green LED lights, and the two-color display screen with 256 gray levels can display 65,536 colors (the two-color display screen can display red, green and Huang San colors).
The full-color LED display screen consists of red, green and blue LED lights, which can display white balance and 16, 777, 2 16 colors.
(3) According to synchronous and asynchronous control or use.
Synchronous mode means that the LED display works in the same way as a computer monitor. It maps computer images to the monitor point by point at the update rate of at least 30 fields/second, and usually has the ability of multi-gray color display, which can achieve the effect of multimedia advertising.
Asynchronous mode means that the LED screen has the ability of automatic storage and playback. Text and non-gray pictures edited on PC are transmitted to LED screen through serial port or other network interfaces, and then LED screen automatically plays offline. Generally, it does not have the ability of multi-gray display, and is mainly used to display text information, which can be networked on multiple screens.
(4) Divided by pixels per inch or pixel diameter.
Because the specifications of LED dot matrix modules used in indoor screens are relatively uniform, they are usually divided into ∮ 3.0mm62,500 pixels/m2 ∮ 3.75mm 4432 1 pixel/m2 ∮ 5.0mm 17222 pixels/m2.
Pixel number of indoor surface stickers:
P 1.58 400689 points/m2
P 1.9 277000 points/m2
P2.0 250000 points/m2
P2.5 160000 points/m2
P311111min/m2
P4 62500 points/m2
P5 40000 points/m2
P6 27777 points/m2
P7.62 17222 points/m2
P8 15625 points/m2
P 10 10000 points/square meter
Pixel diameter and pixel number of outdoor screen
P 10 10000 points/square meter
P 12.5 6400 points/m2
P 16 3906 points/m2
P20 2500 points/m2
P25 1600 points/m2
P3 1.25 1024 points/m2
(5) according to the display performance can be divided into
Video display screen: Generally, it is a full-color display screen.
Text display screen: generally, it is a single-color display screen.
Graphic display screen: generally, it is a two-color display screen.
Quotation display screen: generally digital tube or single primary color display screen;
(6) according to the display device can be divided into
LED digital display: The display device is a 7-segment digital tube, which is suitable for making clock screens and interest rate screens. And display a digital electronic display screen.
LED dot matrix graphic display screen: The display device is a dot matrix display module composed of many evenly arranged light emitting diodes, which is suitable for playing text and image information.
LED video display screen: The display device consists of many light-emitting diodes, which can display various video files such as videos and animations.
Conventional LED display screen: Steel structure is adopted to fix the display screen in one position. The common ones are outdoor large-scale single-column LED advertising screens, and single and double-color LED display screens installed on the wall to play train information in stations.
Lease LED display screen: In the design, R&D department considers that this kind of screen is often used for installation and disassembly, so the left and right boxes are connected by quick locks with positioning function, and the positioning is accurate. The whole box is installed in 10 second. The rental screen is mainly used for stage performances, wedding venues and large-scale Spring Festival Gala.
(7) According to the development direction, it can be divided into
The "advertising media display screen" that has been widely used: the banner monochrome display screen at the door and the full-color display screen on the surface of the square building, mainly advertising;
"Industrial indication display screen" is quietly emerging: supporting distributed control systems such as PLC\DCS with auxiliary display screens, such as displaying speed, flow, temperature and pressure;