Factors that determine the life of the advertising LED displ Published：2018-09-04
What are the factors that determine the life of the advertising LED display wall? How to treat the drug is particularly important, look at the factors that determine the life of the advertising LED electronic display.
1, the impact of LED light source device performance
The LED lamp bead device is the most critical component of the advertising screen and the most relevant to life. For LED lamp beads, the following indicators are mainly: attenuation characteristics, water vapor permeability characteristics, and UV resistance. If the LED advertising screen manufacturer evaluates the performance of the LED lamp bead, it will be applied to the advertising screen, which will lead to a large number of quality accidents, which seriously affect the life of the advertising led electronic display.
2. The impact of supporting components
In addition to the LED lamp bead source, the advertising led electronic display also uses many other supporting components, circuit boards, plastic housings, switching power supplies, connectors, chassis, etc., any one component has quality problems, It may cause the life of the screen to decrease. Therefore, the life of the advertising screen is determined by the life of the key component of the shortest life. For example, LED, switching power supply, and metal casing are all 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 rust, then we can only get a piece of 3 years. Life display.
3. The impact of production process on products
How the production process of LED advertising screen products determines the fatigue resistance. The anti-fatigue performance of the module made by the inferior three-proof treatment process is difficult to guarantee. When the temperature and humidity change, the protective surface of the circuit board will be cracked, resulting in a decrease in the protective performance.
Therefore, the production process of advertising led electronic display is also a key factor in determining the life of the display. The production processes involved in the production of display screens include: component storage and pretreatment process, over-furnace welding process, three-proof process, and waterproof sealing process. The effectiveness of the process is related to material selection and ratio, parameter control and quality of the operator. For the large 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 effective.
4. The impact of the display working environment
Due to different uses, the working conditions of advertising screens vary widely. From the environmental point of view, the indoor temperature difference is small, no rain, snow and ultraviolet light; the outdoor temperature difference can reach up to 70 degrees, plus wind and sun and rain. A harsh environment can exacerbate the aging of the display, which is an important factor affecting the life of the display.
In a certain sense, the life of the LED determines the life of the advertising screen. The lifetime of an LED is usually a lifetime when the luminous intensity is attenuated to an initial value of 50%. As a semiconductor material, LEDs are often said to have a lifetime of 100,000 hours, but that is an evaluation under ideal conditions. It can't be achieved under actual use conditions.
The life of the LED lamp bead determines the life of the advertising screen, not to say that the life of the LED lamp bead is equal to the life of the advertising screen. When the advertising screen is working, not every LED is working at full load every moment. In the case of normal display of video programs, the lifetime of the advertising led electronic display should be about 8 times of the life of the LED lamp bead. When the LED lamp bead works at a small current, the life can be longer.