What is Fullcolor LED display? How does LED display work?
Publish Time: 2024-08-06
1. What is an LED display screen?The LED display screen is a flat panel display consisting of light points with a certain spacing and specifications, and each light point is composed of a single LED light-emitting tube. It uses light-emitting diodes as display elements, and controls the display mode of semiconductor light-emitting diodes to display various information such as text, graphics, images, animations, quotes, videos, and video signals. LED display screens are usually divided into stroke displays and character displays, such as digital tubes, symbol tubes, M-shaped tubes, matrix tubes, level display tubes, etc.2. Working principle of LED display screenThe working principle of LED display screen is to use the characteristics of light-emitting diodes to form an array of LED devices through a certain control method to form a display screen. Each LED represents a pixel, and the LEDs in the LED display screen are organized into different columns and rows to form a grid-like structure. When specific content is to be displayed, the desired image or text can be created by controlling the brightness and color of each LED. The brightness and color of the LED can be controlled by digital signals. The control system of the display screen will send the input digital signal to the corresponding LED to control its brightness and color. In order to achieve high brightness and clear display effects, LED display screens usually use PWM (pulse width modulation) technology, that is, by constantly switching the on and off state of the LED to control the change of display brightness. LED display screens can also use full-color LED technology, that is, combining three different colors of LEDs, red, green and blue, to display colorful images through different combinations of brightness and color.
3. Composition of LED display screensLED display screens are mainly composed of the following parts:LED unit board: This is one of the core display components of LED, consisting of LED modules, driver chips and PCB circuit boards.Control card: used to control the LED unit board, which can control a 256x16-dot two-color screen with a 1/16 scan, and can assemble a cost-effective LED screen.Connection: including data line, transmission line and power line. The data line is used to connect the control card and the LED unit board, the transmission line is used to connect the control card and the computer, and the power line is used to connect the power supply and the control card and the LED unit board. Power supply: Generally, a switching power supply is used, with a 220V input and a 5V DC output.In addition, depending on the use environment, the LED display may also include other accessories and equipment, such as the front panel, cabinet, protective cover, etc.4. Characteristics of LED displayThe characteristics of LED display are mainly as follows:High brightness: The LED display has high brightness and can be used outdoors all day and night, and can also be used indoors. Long life: The service life of the LED display is long, generally reaching more than 100,000 hours.Large viewing angle: The LED display has a large viewing angle and a wide viewing range, and the audience can watch the screen from different angles. Flexible size: The size of the LED display can be designed according to needs, ranging from less than one square meter to hundreds or thousands of square meters.Easy to interface with the computer: The LED display can be easily interfaced with the computer, supports a variety of software, and can display various information such as text, images, and videos.Energy saving and environmental protection: The LED display is powered by low voltage and has low power consumption. It is also environmentally friendly and pollution-free. High reliability: The LED display has high reliability and can work under harsh environmental conditions, such as high temperature, low temperature, and humidity.Real-time: The LED display can display various information in real time, such as news, advertisements, and notifications.Efficiency: The LED display screen has a fast update speed and can complete the update and display of information in a short time.Versatility: The LED display screen can realize multiple functions, such as video playback, interactive communication, remote monitoring, etc.5. Composition of LED electronic display screen systemThe LED electronic display screen system is mainly composed of the following parts:LED display screen: The LED display screen is the core part of the LED electronic display screen system, which is composed of LED lamp beads, circuit boards, power supplies and control chips. LED lamp beads usually use SMD LED (Surface Mounted Device LED) or DIP LED (Dual In-line Package LED) and other types to emit light and produce images.LED display screen control system: The LED display screen control system is used to receive and store display data, process and distribute the data, and then send the data to the LED display screen through a specific control method.LED display screen information processing system: The LED display screen information processing system is mainly responsible for processing the original data, such as decoding, format conversion, image processing, etc., to ensure that the data can be correctly displayed on the LED display screen.LED display screen power distribution system: The LED display screen power distribution system is mainly responsible for providing power for the LED display screen, usually including power sockets, power cords, power adapters, etc.LED display screen safety protection system: LED display screen safety protection system mainly includes waterproof, dustproof, lightning protection and other devices to protect LED display screens from environmental factors.LED display screen structural frame engineering: LED display screen structural frame engineering mainly includes steel structure, aluminum profile, grid structure, etc., which are used to support and fix the various components of LED display screens.In addition, according to actual needs, the LED electronic display screen system may also include other accessories and equipment, such as front panel, box, protective cover, etc. These accessories and equipment can enhance the function and safety of the LED electronic display screen system and improve its use effect.
6. Classification of LED display screensLED display screens can be classified according to different standards. The following are some common classification methods:Classification by color: Monochrome LED display screen: including red LED electronic display screen, white LED electronic display screen, green LED electronic display screen, etc.Two-color LED display screen: red and green two primary colors, can display red, green, mixed color (yellow).Full-color LED display screen: red, green and blue three primary colors, 256-level grayscale full-color display screen, can display more than 160,000 colors. Classification by display effect: LED monochrome display: a display composed of a single color, the display content is generally relatively simple text or pattern.LED dual-color display: a display composed of 2 colors.LED full-color display: red, green, and blue three primary colors, 256-level grayscale full-color display, can display more than 160,000 colors, basically can simulate all the colors of the computer. Classification by use environment: Indoor LED display: LED display suitable for indoor environment.Outdoor LED display: LED display suitable for outdoor environment, generally requires waterproof, dustproof and other measures. Classification by display area: Small pitch LED display: suitable for LED display with smaller pitch, usually below P2.Large pitch LED display: suitable for LED display with larger pitch, usually above P2. Classification by special function: LED rental display: a display that can be repeatedly disassembled and installed, the screen body is ultra-light, ultra-thin, and space-saving, and can be spliced in any direction, size, and shape to present various visual effects.LED small pitch screen: a display with ultra-small pitch and high pixel density.LED transparent screen: also called grid screen, which makes the LED display screen transparent.LED creative display screen: a special-shaped display screen with innovation and creativity as the core. The more common ones are LED cylindrical screen and spherical LED display screen.LED fixed display screen: a traditional conventional LED display screen with consistent screen size, one-piece molding without deformation and small error.
