LED Display Introduction Tips
Apr 14, 2021
1, display performance LED display according to the display performance is divided into text LED display, graphic LED display, computer video LED display, TV video LED display and market LED display.
Market LED display generally includes securities, interest rates, futures and other uses of LED display.
LED displays are divided into single-color LED displays (including pseudo-color LED displays), double-color LED displays and full-color (triple-color) LED displays according to display colors.
According to the gray level, it can be divided into 16, 32, 64, 128, 256 gray LED display screen, etc.
Monochrome screens are usually made of red luminescent material.
Dual primary color screens generally consist of red and yellow-green luminescent materials.
The three primary color screens are divided into full color, consisting of red, yellow-green (wavelength 570nm) and blue.
Nature color is composed of red, pure green (wavelength 525nm) and blue.
3. In the non-market LED display, indoor LED display can be divided into Φ3.0mm(62500 points /m2), LED 3.7mm(44100 points /m2), E 4.8mm(27800 points /m2), V 5mm(5mm) according to the diameter of the LED single point used.
17200 points /m2), Φ8mm(10000 points /m2) and other displays;
Outdoor LED display can be divided into Φ8mm(10000 points /m2), chip 12mm(3906 points /m2), chip 16mm(2500 points /m2), chip 26mm(1024 points /m2) and other LED displays according to the pixel diameter used.
According to the digital tube size used in the market LED display, it can be divided into 2.0cm(0.8inch), 2.5cm(1.0inch), 3.0cm(1.2inch), 4.6cm (1.8inch), 5.8cm(2.3inch), 7.6cm(3inch).
The LED display can be divided into indoor LED display, semi-outdoor LED display and outdoor LED display according to the use environment.
Indoor screen area is generally from less than 1 square meters to more than 10 square meters, the point density is high, in the non-direct sunlight or lighting environment, watching distance in a few meters away, the screen body does not have the ability to seal and waterproof.
Semi-outdoor screen is between outdoor and indoor, with high brightness, can be used in the outdoor non-direct sunlight, screen body has a certain seal, generally under the eaves or in the window.
The outdoor screen area is generally from a few square meters to dozens or even hundreds of square meters, and the point density is sparse (mostly 1000-10000 points per square meter),
Luminance in 3000-6000cd/ square meter (towards different, brightness requirements are different), can be used in direct sunlight conditions, viewing distance in dozens of meters away, the screen body has good wind and rain resistance and lightning protection ability.
5. Installation mode: embedded type, stepped type, hoisting type, wall-mounted type, pre-maintenance type and hinge type.
Six, synchronous and asynchronous synchronous mode refers to the working mode of LED display is basically equivalent to the computer monitor, it at least 30 fields/second update rate corresponding to the real-time mapping of the computer monitor image, usually has a multi-gray color display ability, can achieve the effect of multimedia advertising.
Asynchronous mode refers to the LED screen has the ability to store and automatically play, on the PC edited text and no grayscale pictures through the serial port or other network interface into the LED screen, and then the LED screen automatically play offline, generally no more grayscale display ability, mainly used to display text information, can be multi-screen networking.
LED display is a special display media, it can not directly accept computer data, need to carry out a series of transformations.
The function of the acquisition card is to collect the display data of the high-speed computer (or the multimedia display card), convert it, and transmit it to the main controller.
