LED display small Knowledge big collection

Display Getting Started knowledge

LEDs are the abbreviations of light emitting diode LEDs, referred to as LEDs. LED display (LED panel) is a certain control method for displaying text, text, graphics, images, animation, market and other information as well as television, video signal and LED device array composed of the display screen. As a new generation of display media, has been widely used in the exhibition center, Trading Center, Auction Center, financial Center, Information Center, securities, telecommunications, taxation, power supply, customs, courts, fire, stations, airports, terminals, talent market, such as the Business Hall of public places.

Display performance

LED display according to 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.

Display Color

LED display according to the display color divided into single color LED display (including pseudo-color LED display), dual-color LED display and full color (three primary color) LED display. According to gray level can be divided into 16, 32, 64, 128, 256 levels of gray LED display.

Monochrome screen is generally composed of red luminescent materials.

Double-color screen is generally composed of red and yellow-green luminescent materials.

The Tri-phosphor screen is divided into full color, composed of red, yellowish green (wavelength 570nm), blue, True Color (nature color), composed of red, pure green (wavelength 525nm), blue.

Basic Glow Point

Non-market LED display, indoor LED display according to the LED single-point diameter can be divided into φ3.0mm (62,500 points/M 2), φ3.7mm (44,100 points/M 2), φ4.8mm (27,800 points/M 2), φ5mm (1720 0 point/M 2), φ8mm (10,000 point/M 2) and other display;

Outdoor LED display according to the pixel diameter can be divided into φ8mm (10,000 points/M 2), φ12mm (3,906 points/M 2), φ16mm (2,500 points/M 2), φ26mm (1024 points/M 2) and other LED display. Market LED display in accordance with the digital tube size can be divided into 2.0cm (0.8inch), 2.5cm (1.0inch),) 3.0cm (1.2inch), 4.6CMM (1.8inch), 5.8cm (2.3inch), 7.6cm (3inch ) and other

Use environment

LED display according to the use of the environment is divided into indoor LED display, semi-outdoor LED display, Outdoor LED display

Indoor screen area generally never to 1 square meters to more than 10 square meters, point density is higher, in non-direct sunlight or lighting environment use, viewing distance of a few meters away, the screen body does not have the ability to seal waterproof.

Semi-outdoor screen between the outdoor and indoor between the two, with high luminous brightness, can be used in non-direct sunlight outdoor, the screen body has a certain seal, usually under the eaves or in the window.

Outdoor screen area generally from a few square meters to dozens of or even hundreds of square meters, point density is more sparse (more than 1000-10000 points per square meter), luminous brightness in 3000-6000cd/square meters (facing different, brightness requirements of different), can be used in direct sunlight, viewing distance of dozens of meters away, the screen body has a good wind Anti-rain and anti-thunder ability.

Installation method

Built-in, step-type, lifting type, wall-mounted, front-maintenance, hinge-type

Synchronous and asynchronous

Synchronous mode refers to the mode of operation of the LED display is basically the same as the computer monitor, it is at least 30 games/second update rate point corresponding to the real-time mapping of the image on the computer monitor, usually has a multi-grayscale color display ability, can achieve multimedia advertising effect.

Asynchronous mode refers to the LED screen has the ability to store and auto-play, edit the text on the PC and no gray image through the serial port or other network interface into the LED screen, and then by the LED screen to automatically play, and generally do not have many grayscale display capabilities, mainly for displaying text information, can be multi-screen networking

Key features of the capture card

LED display is a special display media, it can not directly accept computer data, need to make 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 by reducing frequency.

Beijing Armed Police 2 courtyard

LED display small Knowledge big collection