There are many classifications of LED displays, here they are simply divided into 3 categories. It is divided into 3 major categories and its uses are introduced at the same time.

1. LED display screens are classified according to the use environment

Indoor LED display screens

Indoor LED display screens are mainly used indoors. In terms of production technology, the first It is to make light-emitting chips into dot matrix modules (or digital tubes), and then splicing the modules into display unit boards of a certain size. According to user requirements, the display unit boards are used as the basic unit to splice them into the size required by the user. According to the size of pixels, indoor screens are divided into P2, P3, P3.75, P4.8, P5, P8, P10, etc.

The area of ??indoor screens generally ranges from less than 1 square meter to more than ten square meters, and the dot density is high. They are used in environments that are not exposed to direct sunlight or lighting, and the viewing distance is several meters away. The screen body does not have the ability to be sealed and waterproof. . Indoor display screens are mainly dot matrix modules, because indoor use does not require high brightness of the display screen, and the use of dot matrix modules is very cost-effective.

Outdoor LED display screen

Outdoor LED display screen is mainly used outdoors. In the production process, the light-emitting die is first packaged into a single light-emitting diode, which is called a single light. Single lamps used to make outdoor screens generally use reflective cups with light condensing functions to increase brightness; multiple LED single lamps are then packaged into a single pixel tube or pixel module, and the pixel tubes or pixel modules form a lattice The display unit box is a type of display unit box. According to the needs of the user and the display application site, a display unit box is used as the basic unit to form the required size. The box should be sealed in design to achieve waterproof and fog-proof purposes, so that it can adapt to the outdoor environment. According to the size of pixels, outdoor screens are divided into *11, P14, *16, *19, *21, *26, P36 and other specifications.

The area of ??outdoor screens generally ranges from a few square meters to dozens or even hundreds of square meters, the dot density is relatively sparse (mostly 1000-4000 dots per square meter), and the luminous brightness is 3000-6000cd/square meter (different orientations, brightness (different requirements), it can be used under direct sunlight, and the viewing distance is tens of meters away. The screen body has good windproof, rainproof and lightning protection capabilities.

Semi-outdoor LED display

Semi-outdoor screen is between outdoor and indoor. It has high luminous brightness and can be used outdoors without direct sunlight. The body has a certain seal, usually under the eaves or in the window.

2. LED display screens are classified according to display performance

LED displays are divided into single-color graphic and text screens, dual-color graphic and text screens, dual-primary color video screens, and synchronous displays according to display performance. , three primary color screens (full color screens), single color bar screens, double color bar screens, market display screens, various display boards, etc. Market LED displays generally include LED displays for securities, interest rates, futures and other purposes.

Graphic display screen

Supports TXT, BMP and other files, and can display simple flat pictures. It also has the function of offline operation. If the display content does not change, you can directly turn on the power of the screen without turning on the control machine. The display mode supports more than ten modes such as expansion and instantaneous. The content stay can be adjusted arbitrarily between 0-255 seconds (including stillness), and can automatically cycle and display different content that the user wants to display, which is divided into three types: long-term, temporary, and real-time. After production, it is sent to the screen through RS232 and RS485 serial ports. show.

Video display screen

The display content is synchronized in real time, and the size of the display screen can be conveniently selected. There are ***256X256X256=16,777,216 color change combinations, and the scanning field frequency is greater than 200 Hz. The scanning lines are almost invisible to the naked eye, achieving a high-speed gamma correction design with no grayscale loss. The parameters can be selected by the user, easily realizing various grayscale adjustment and brightness control functions, making the image soft and realistic, and better Reproduce the layering and three-dimensionality of the image, so that the LED displays the best display effect under various ambient lights. Equipped with advanced and complete control, production and playback software, it is easy to learn and use. It has dozens of playback methods and can play video information. It has an automatic black screen function when the computer is turned on and off, which increases the service life of the display and avoids the need to turn on and off the computer. Sometimes, the display interface is cluttered and unintentional.

LED bar screen

Usually one or two lines of single color or double color, and a dedicated remote control can be used. It has an offline operation function, that is, the control machine can be turned off after the display content is edited and sent to the display screen. There are three display content storage methods: long-term, temporary and real-time. It can scroll to display different contents and can display 4000 Chinese characters. After production, it is usually sent to the screen through the RS232 serial port and controlled through the remote control. The communication line uses twisted pair wire, which has strong anti-interference ability. The RS232 interface is used within the communication distance of 100 meters, and the RS485 interface is used within the communication distance of 100-500 meters.

As a new media and a new type of decorative material, LED strip screens can be embedded in many interior decorations to make the decoration more dynamic. The constantly updated subtitles can be used as new notice boards to promote offers and promotions. Information etc. It greatly improves the grade of interior decoration and has good visual effects. Since the installation and use of LED strip screens have a certain technical content, it has restricted the development of the advertising industry. Mastering LED technology can improve the technical content of interior decoration and expand business.

LED curtain wall screen

LED curtain wall screen is composed of pixel unit boards. With the LED synchronization video synchronization control system, it can display a variety of patterns, text, and pattern dynamic pictures. And can produce various color changes. It is a multimedia LED display system suitable for film and television broadcasting digital stages as stage backgrounds to present virtual scenes and color effects.

LED digital screen

Each guardrail tube is arranged with 6, 8, or 16 pixels, which can be controlled offline or connected to a computer for synchronous control; it can display various Such dynamic effects. The control system is developed and edited using special iso-optical programming software. It is easy to change the digital tube control pattern. You only need to copy the pattern format file generated by editing into the CF card. The digital tube controller can be controlled individually or multiple units can be controlled online. The pipe installation arrangement can be arranged in any way, suitable for various complex engineering needs. The digital tube, controller and power supply are connected with standard male and female plugs, which is convenient and fast. It has a unique appearance design and a new outdoor waterproof structure. It is widely used in various building curtain walls, amusement landscape decorative lighting, and various bridge lighting. and other places.

3. LED display screens are classified according to the base color

Monochrome LED display screen

As the name suggests, the monochrome LED display screen has only one color for the screen backlight. Most of them have stylish blue or green backlights, but there are also other uncommon single colors, such as red, yellow, etc. Most single-color LED displays use red, because red has higher luminous efficiency and can obtain higher brightness. Green can also be used, or mixed colors, that is, part of it is red, part of it is green, and part of it is yellow.

Double-color LED display

Double-color LED display is an LED display made by putting red and green LEDs together as one pixel. Each pixel has two primary colors of red and green, which can be superimposed to produce yellow. With grayscale control, up to 65535 colors can be combined through changes in different grayscales of red and green.

Full-color LED display

A full-color LED display is an LED display that puts red, green, and blue LED tubes together as one pixel. The full-color LED display is also called three primary colors. Each pixel has three primary colors of red, green and blue. With grayscale control, the colors of nature can be well restored through the changes of different grayscales of red, green and blue. There are 16777216 colors combined.

The above is about the classification and differences of LED display screens. I hope it will be helpful to everyone.

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