Product knowledge | What determines the service life of advertising LED display?
1. Influence of LED lamp performance
LED lamp is not only the key of RGB LED display, but also the component related to service life. For LED lamp , the main indicators are the following: attenuation characteristics, waterproof vapor permeability characteristics and UV resistance. If the manufacturer of LED advertising screen fails to pass the index performance evaluation of LED lamp, it will be applied to advertising screen, which will lead to a large number of quality accidents and seriously affect the service life of advertising LED electronic display screen.
2. Impact of supporting parts
Besides LED lamp, the RGB LED display also uses many other supporting parts, such as circuit board, plastic shell, switching power supply, connector, shell, etc. any quality problem of any part may reduce the service life of the screen. Therefore, the service life of advertising screen is determined by the service life of the key component with short service life. For example, led, switching power supply and metal shell are selected according to the 8-year standard, and the protective process performance of the circuit board can only support its work for 3 years. After 3 years, it will be damaged due to corrosion, so we can only get a display screen with a service life of 3 years.
3. Influence of production process on products
How the production process of RGB LED display products determines the anti fatigue performance. The anti fatigue performance of the module produced by the poor three prevention treatment process is difficult to ensure. When the temperature and humidity change, cracks will appear on the protective surface of the circuit board, resulting in the decline of the protective performance.
Therefore, the production technology of advertising LED electronic display screen is also the key factor to determine the service life of the display screen. The production processes involved in the production of display screen include: component storage and pretreatment process, furnace welding process, three prevention treatment process, waterproof sealing process, etc. The effectiveness of the process is related to material selection and proportioning, parameter control and operator quality. For the vast number of advertising LED electronic display manufacturers, the accumulation of experience is very important. A factory with many years of experience will control the production process more effectively.
4. Impact of display screen on working environment
Due to different purposes, the working conditions of RGB LED display vary greatly. In terms of environment, the indoor temperature difference is small, without the influence of rain, snow and ultraviolet rays; The outdoor temperature difference can reach 70 degrees, plus wind, sun and rain. The bad environment will aggravate the aging of the display screen, and the working environment is an important factor affecting the service life of the display screen.
In a sense, the life of LED determines the life of advertising screen. The service life of LED is usually the time when the luminous intensity decays to 50% of the initial value. As a semiconductor material, LED is often said to have a life of 100000 hours, but that is the evaluation under ideal conditions.
The service life of LED lamp determines the service life of advertising screen, which does not mean that the service life of LED lamp is equal to that of advertising screen. When the advertising screen is working, not every LED is working at full load all the time. When the LED display plays video programs normally, the service life of the LED display should be about 8 times that of the LED bulb. When the LED bulb works at low current, the service life can be longer.
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