Can the lifespan of a transparent led display really reach 100,000 hours?

2021/02/20


Is it true that the transparent LED display has a life of 100,000 hours?

LED transparent screen, like other electronic products, has a lifetime. Although the theoretical life of LED is 100,000 hours, it can work for more than 11 years based on 24 hours a day and 365 days a year, but the actual situation and theoretical data are much different. According to statistics, the life of LED transparent screens on the market is generally 4~8 In 2012, LED transparent screens that can be used for more than 8 years are already very good. Therefore, the life of the transparent LED screen is 100,000 hours, which can be achieved in an ideal state, and 50,000 hours is considered good in actual conditions.

The factors that affect the life of the LED transparent screen are internal and external. The internal factors include the way of LED lamp bead patch, the way of LED installation, the performance of peripheral components, the performance of LED light-emitting devices, and the anti-fatigue performance of the product; the internal cause is the working environment of the LED transparent screen and many more.

LED lamp bead patch method

1. The lamp bead is attached

Adopting the front-lighting technology, that is, the standard LED display bead is pasted on the front of the PCB board, which can ensure a full 140° viewing angle. It is called a front-mounted positive-emitting transparent LED screen, which represents a model such as a giant color source. JTS3. To

2. Lamp bead side sticker

Using side-emitting technology, side-mounted LED lamp beads are installed on the upper or lower side of the light bar, with a viewing angle of 160° and a wider viewing angle. The industry name is the side-emitting LED transparent screen, which represents JTC3 with giant color source.

Summary: The side-emitting LED transparent screen has higher permeability and wider viewing angle. Due to the side design of the lamp beads, the permeability is higher, which can reach more than 90%, and it has better anti-slip ability and fast maintenance requirements. The positive-emitting lamp beads are made of traditional LED display lamp beads. Although the transmittance is slightly lower than that of the side-emitting technology, it has better product stability and more convenient maintenance. Nowadays, LED transparent screen manufacturers mainly use the front-facing product position. And loved by more and more customers.

LED installation method

1. Rental lifting

Directly use hanging beams (with hooks) to install and frequently install and disassemble, such as concerts, stage performances, and exhibition sites. The representative case of Jucaiyuan Optoelectronics is the JTS3led transparent screen in Nanchong Development Zone.

2. Fixed lifting

This method is used in the atrium of shopping malls, gold jewelry stores, business halls, etc. After the installation is completed, it is not easy to move. The representative case is the transparent led screen of Kleidi, which is a representative case of the transparent led screen of a jewelry store.

3. Glass curtain wall installation

This is also a fixed installation method, mainly for the field of glass curtain wall. According to the type of glass curtain wall, there will be different solutions, mainly these types: single-point support glass curtain wall installation, double-point support/four-point support glass Curtain wall installation, component glass curtain wall installation, full glass glass curtain wall installation. This type of installation is a more complicated one. Generally, products need to be customized according to the size of the glass curtain wall, and the area is relatively large. The representative case is Shanghai KFC transparent led glass curtain wall screen.

transparent LED screen

Peripheral component influence

     In addition to LED light-emitting devices, LED transparent screens also use many other peripheral components, including circuit boards, plastic casings, switching power supplies, connectors, casings, etc. Any problem with any component may lead to the life of the transparent screen. reduce. Therefore, the longest life span of a transparent display is determined by the life span of the key component with the shortest life span. For example, LEDs, switching power supplies, and metal casings 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 3 year Life-span transparent screen.

The impact of the working environment

     Due to different uses, the working conditions of transparent screens vary greatly. In terms of the environment, the indoor temperature difference is small, and there is no influence of rain, snow and ultraviolet rays; the outdoor temperature difference can reach up to 70 degrees, plus wind, sun and rain. The harsh environment will aggravate the aging of the transparent screen, and the working environment is an important factor affecting the life of the transparent screen.

     The life of the transparent LED screen is determined by many factors, but the end of life caused by many factors can be continuously extended by the replacement of parts (such as switching power supply). However, it is impossible for LEDs to be replaced in large numbers. Therefore, once the life of the LED ends, it means the end of the life of the transparent screen. In a certain sense, the life of the LED determines the life of the transparent screen.

     We say that the life of the LED lamp bead determines the life of the transparent screen, but it does not mean that the life of the LED lamp is equal to the life of the transparent display. Since the transparent display screen does not work at full capacity all the time, when the transparent screen is playing video programs normally, the life span of the transparent screen should be 6-10 times the life span of the LED. The life span of the LED can be longer when working at low current. Therefore, the life span of the transparent screen using this brand's LED lamp beads can reach about 50,000 hours.

LED light-emitting device performance

     LED lamp beads are the most critical part of the transparent screen and the most relevant part of the life. For LED lamp beads, the following indicators are mainly: attenuation characteristics, water vapor penetration characteristics, and UV resistance. If the LED transparent screen manufacturer fails to evaluate the performance of the LED lamp beads, it will be applied to the transparent screen, which will cause a large number of quality accidents and seriously affect the life of the LED transparent screen.

The anti-fatigue performance of the product

     The anti-fatigue performance of LED transparent screen products depends on the production process. It is difficult to guarantee the fatigue resistance of the module made by the poor three-proof processing technology. When the temperature and humidity change, the circuit board protective surface will appear cracks, resulting in a decrease in the protective performance.

     Therefore, the production process of the LED transparent screen is also a key factor in determining the life of the transparent screen. The production processes involved in the production of transparent screens include: 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 the quality of the operators. For most LED transparent screen manufacturers, the accumulation of experience is very important. A factory with many years of experience will be more effective in controlling the production process. .

How to make the transparent LED display longer life?

     From the purchase of raw materials to the standardization and standardization of the production and installation process, it will have a great impact on the service life of the LED display. The brands of electronic components such as lamp beads and ICs, to the quality of switching power supplies, are all direct factors that affect the life of large LED screens. When we plan the project, we should specify the specific brands and models of reliable quality LED lamp beads, good reputation switching power supplies, and other raw materials. In the production process, pay attention to anti-static measures, such as wearing static rings, wearing anti-static clothes, and choosing dust-free workshops and production lines to minimize the failure rate. Before leaving the factory, the aging time should be guaranteed as much as possible to achieve a 100% pass rate. During the transportation, the product should be packaged, and the packaging should be marked as fragile. If it is shipped by sea, measures to prevent hydrochloric acid corrosion should be taken.

     In addition, the daily maintenance of the LED transparent screen is also very important. Regularly clean the dust accumulated on the screen to avoid affecting the heat dissipation function. When playing advertising content, try not to stay in all white, all green, etc. for a long time, so as to avoid current amplification, cable heating and short-circuit failures. When playing festivals at night, the screen brightness can be adjusted according to the ambient brightness, which not only saves energy, but also prolongs the life of the LED display .