The benefits brought by LED display screens in various application fields are understandable. After all, they cost a "big price". At the same time, some more careful friends may ask this question: "How long can the LED display screen purchased at a 'big price' be used?" Is its service life long? With these two questions, follow the editor to learn more about the service life of LED displays~

The service life of LED display screen

The service life of LED displays is more than 100,000 hours. Because the backlight is generally LED light, the life of the backlight is equivalent to that of the LED display. Even if it is used 24 hours a day without interruption, the theoretical equivalent lifespan is more than 10 years, and the half-life is 50,000 hours. Of course, these are theoretical values! How long it can actually be used is also closely related to the use environment and maintenance of the product. Good maintenance and upkeep methods are the foundation of the life of the LED display. Therefore, quality and service must be the prerequisite for purchasing an LED display.

Factors affecting the life of LED display

In a certain sense, the life of LED determines the life of LED display. The life of an LED is usually defined as the time when the luminous intensity decays to 50% of the initial value. As a semiconductor material, LEDs are often said to have a lifespan of 100,000 hours, but that is an evaluation under ideal conditions, which cannot be achieved in actual use. The main factors that affect its service life are as follows:

1. Influence of peripheral components

In addition to LED light-emitting devices, full-color LED displays also use many other peripheral components, including circuit boards, plastic casings, switching power supplies, connectors, chassis, etc. Problems with any component may cause the display to lifespan is reduced.

2. Impact on performance of LED light-emitting devices

LED light-emitting devices are the most critical and life-span-related components of the display screen. For LEDs, the main indicators are: attenuation characteristics, waterproof vapor penetration characteristics, and UV resistance. If the LED display manufacturer does not pass the performance evaluation of the LED device and applies it to the display screen, it will lead to a large number of quality accidents and seriously affect the life of the LED display screen.

3. Drive circuit design

The arrangement of the driver IC on the driver circuit board on the large screen module will also affect the brightness of the LED. Because the output current of the driver IC is transmitted too far on the PCB board, the voltage drop in the transmission path will be too large, affecting the normal operating voltage of the LED and causing its brightness to decrease. We often find that the LED brightness around the large screen module is lower than in the middle. This is the reason. Therefore, in order to ensure the consistency of the brightness of the large screen, it is necessary to design the drive circuit distribution diagram.

4. Impact on the anti-fatigue performance of the product

The anti-fatigue performance of full-color LED display products depends on the production process. The anti-fatigue performance of modules produced by poor three-proof processing technology is difficult to guarantee. When temperature and humidity change, cracks will appear on the protective surface of the circuit board, resulting in a decrease in protective performance.

5. Influence of working environment

Due to different uses, the working conditions of LED displays vary widely. From an environmental perspective, the indoor temperature difference is small and there is no influence from rain, snow and ultraviolet rays; the outdoor temperature difference can reach up to 70 degrees, plus wind, sun and rain. Harsh environments will aggravate the aging of the display, and the working environment is an important factor affecting the life of the full-color LED display.

6. The impact of electromagnetic radiation on product life

The interference of radio frequency radiation to electronic systems generally comes from two ways. One way is that the electrical noise interference from the radiated field directly enters the system. Another way in which RF radiation interference is introduced is through the power supply. The transmission lines on the outer frame are equivalent to receiving antennas, introducing radiation interference into the system. When this interference is serious, it can burn out the power supply of the system itself.