With the improvement of the economy, the level of science and technology is also constantly improving. In our life, LED display is a relatively common electronic device used to display images and texts. So do you know there are several types of display screens? Next, YONGS LED display will tell you about its classification:
1. According to the use environment, it is divided into indoor, outdoor and semi-outdoor
The indoor screen area is generally from less than 1 square meter to more than ten square meters. The indoor LED display is used in an indoor environment. This type of display has moderate brightness, large viewing angle, short color mixing distance, light weight and high density, and is suitable for close viewing. .
The outdoor screen area is generally from a few square meters to tens or even hundreds of square meters, the point density is relatively thin (mostly 2500-10000 points per square meter), and the luminous brightness is 5500-8500cd/square meter (different orientations, different brightness requirements), can be used in the sun When used under direct sunlight, the viewing distance is tens of meters away, and the screen has good wind and rain resistance and lightning protection capabilities.
The semi-outdoor screen is between the outdoor and the indoor. It has high luminous brightness and can be used outdoors without direct sunlight. The screen has a certain seal, usually under the eaves or in the window.
2. According to the color, it is divided into single color, double primary color, three primary color (full color)
Monochromatic 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 homes).
The dual-color LED display consists of red and green LED lights, and the dual-color display with 256 gray levels can display 65,536 colors (the dual-color display can display three colors of red, green, and yellow).
The full-color LED display consists of red, green, and blue LED lights, showing white balance and 16,777,216 colors.
3. Synchronous and asynchronous according to control or usage
Synchronous mode means that the working mode of the LED display is basically the same as that of the computer monitor. It maps the computer image correspondingly to the image on the real monitor at an update rate of at least 30 fields/second, usually with multi-gray color display. Ability to achieve multimedia advertising effect.
Asynchronous mode means that the LED screen has the ability of storage and automatic playback. The edited text and non-grayscale pictures on the PC are transmitted to the LED screen through the serial port or other network interfaces, and then the LED screen is automatically played offline. Generally, there is no grayscale. It is mainly used to display text information, and it can be connected to multiple screens.
4. Divided by pixel density or pixel diameter
Since the specifications of the LED dot matrix modules used in indoor screens are relatively uniform, they are usually divided according to the pixel diameter of the module: ∮ 3.0mm 62500 pixels / square meter ∮ 3.75mm 44321 pixels / square meter ∮ 5.0mm 17222 pixels / square meter
