LED display how long is the service life
LED display is a new type of display device. Compared with traditional display methods, it has many advantages, such as long service life, high brightness, fast response speed, long visual distance, and strong environmental adaptability. The humanized design makes the LED display easy to install and maintain, and can be used flexibly anytime, anywhere, and is suitable for many installation conditions. So, how long is the service life of a general LED display?
The use of LED display is divided into indoor and outdoor. Whether it is indoor or outdoor, the service life of the LCD module panel is more than 100,000 hours. The lifespan is comparable to the lifespan of the LED screen. Even if it is used 24 hours a day without interruption, the theoretical equivalent life is more than 10 years, and the half-life is 50,000 hours. Of course, these are theoretical values! How long it can actually last is closely related to the use environment and maintenance of the product. Good maintenance and maintenance methods are the basis for the life of the LED display screen. Therefore, the LED display screen purchased by consumers must have quality and service as the premise.
Factors affecting the life of led display
We all know that using good chips and good materials, the service life of the general LED display is not short, at least two years. However, in the process of use, various problems are often encountered, especially the LED display used outdoors, which is often exposed to wind and sun, and even worse weather conditions. Therefore, various problems will inevitably occur, and the appearance of such problems will inevitably affect the service life of the LED full-color display.
So what factors will affect the service life of the LED display? In fact, it is nothing more than two major factors, internal and external factors; the internal factors include the performance of LED light-emitting devices, the performance of peripheral components, the anti-fatigue performance of products, and the external factors include the working environment of the LED display.
How long is the service life of the led display
The LED light-emitting device, that is, the LED lamp used in the display screen, is the most critical and life-related component of the display screen. For LEDs, we pay attention to the following indicators: attenuation characteristics, waterproof and vapor permeability characteristics, and UV resistance. Luminance decay is an inherent characteristic of LEDs. For a display screen with a design life of 5 years, if the brightness of the LED used is attenuated by 50% in 5 years, it is necessary to consider the reserved attenuation margin in the design, otherwise the display performance will not meet the standard after 5 years; the stability of the attenuation index is also It is very important that if the attenuation has exceeded 50% in 3 years, it means that the life of this screen will end prematurely. Therefore, when buying an LED display, it is best to choose a chip with good quality. If Nichia or Cree, etc., these major manufacturers of professional LED chips, not only have good quality, but also have good performance. .
Display screens used outdoors are often eroded by moisture in the air. When the LED light-emitting chip is exposed to water vapor, stress changes or electrochemical reactions occur, resulting in device failure. Under normal circumstances, the LED light-emitting chip is wrapped by epoxy resin and will not be corroded. Some LED devices with design defects or material process defects have poor sealing performance, and water vapor can easily pass through the gap between the pins or the gap between the epoxy resin and the shell. Entering the inside of the device will cause the device to fail rapidly, which is called “dead light” in the industry.
In addition, under the irradiation of ultraviolet rays, the properties of the colloid and bracket material of the LED will change, which will cause the device to crack, thereby affecting the life of the LED. Therefore, the anti-ultraviolet ability of LEDs used outdoors is also one of the important indicators. Therefore, the waterproof treatment of LED displays used outdoors must be done well, and the protection level must reach IP65 to achieve waterproof, dustproof, sunscreen and other effects.
In addition to LED light-emitting devices, the display screen also uses many other peripheral component materials, including circuit boards, plastic housings, switching power supplies, connectors, chassis, etc. Any problem with any component may lead to the life of the display screen. reduce. Therefore, it is no exaggeration to say that the longest life of the LED display is determined by the life of the key component with the shortest life. Therefore, it is very important to choose a good material.
The fatigue resistance of display products depends on the production process. The anti-fatigue performance of the modules made by the poor three-proof treatment process is difficult to guarantee. When the temperature and humidity change, cracks will appear on the protective surface of the circuit board, resulting in a decrease in the protective performance. Therefore, large manufacturers should be considered when purchasing LED displays. An LED display manufacturer with many years of experience will be more effective in controlling the production process.