Technology 丨 Several important reasons affecting the price of LED display

1,434 views admin 2020-04-20

LED advertising screens have developed rapidly in outdoor applications, and have gradually become the overlord of outdoor advertising. They have gradually appeared in streets and alleys, and they are all dressed up in our cities. However, LED advertising screens also have a lifespan. use. So, what are the factors that determine the life of the LE advertising screen? How to treat the disease is particularly important, let's take a look at the factors that determine the life of the LED advertising screen.

Effect of production process on products

How the production process of LED advertising screen products determines the fatigue resistance. The anti-fatigue performance of the modules produced by the inferior three-prevention 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 reduced protection performance, so the production process of LED advertising screens is also the key to determining the life of the display factor. The production processes involved in the production of display screens are: component storage and pretreatment process, furnace welding process, three-proof treatment process, waterproof sealing process, etc. The effectiveness of the process is related to material selection and ratio, parameter control and operator quality. For the vast majority of LED display manufacturers, the accumulation of experience is very important. A factory with many years of experience will be more effective in controlling the production process. .

Influence of LED light source device performance

The LED chip is the most critical and most relevant component of the advertising screen. For LED chips, the main indicators are: attenuation characteristics, waterproof vapor penetration characteristics, and ultraviolet resistance. If LED advertising screen manufacturers fail to evaluate the performance of LED chips, they will be applied to advertising screens, which will cause a large number of quality accidents and seriously affect the life of LED advertising screens.

Impact of supporting parts

In addition to the LED chip light source, the LED advertising screen also uses many other supporting components, such as circuit boards, plastic shells, switching power supplies, connectors, chassis, etc., any quality problems in any component may lead to The life of the screen is reduced. Therefore, the life of the advertising screen is determined by the life of the key component with the shortest life. For example, the LED, switching power supply, and metal casing are all selected according to the 8-year standard, and the protection process performance of the circuit board can only support its work for 3 years. After 3 years, it will be damaged due to corrosion, then we can only get a piece of 3 years Lifetime display.

The influence of the working environment of the display

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 and snow and ultraviolet effects; outdoor temperature difference can be up to 70 degrees, plus wind and sun. The harsh environment will exacerbate the aging of the display, and the working environment is an important factor affecting the life of the display.

To a certain extent, the working environment of the LED advertising screen determines his life. The life time 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 span of 100,000 hours, but that is an evaluation under ideal conditions. However, it cannot be achieved in actual use.

The life of the LED chip determines the life of the LED advertising screen, not that the life of the LED chip 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. When the display screen is playing a video program normally, the life of the LED advertising screen should be about 8 times the life of the LED chips. When the LED chips can work longer under low current conditions.