With the rapid development of the automobile market in recent years, the number of green brand cars that can be seen on the road has also increased. These green brand pure electric cars are called the father of electric cars by netizens. The reason for this title is that cars are originally improved products that improve the convenience of our lives. They can free our feet and can start anytime and anywhere. However, electric cars are limited by continuous distance and imperfect charging facilities. The daily use of users has brought great inconvenience. In addition to the inconvenience of daily charging, the cold and warm air conditioning required in winter and summer must be used appropriately as the owner, and priority is given to ensuring the limited power supply and the driving distance. It is guaranteed that as a mobile tool, the owner cannot enjoy a convenient and comfortable driving experience. Like electric vehicles, LED display technology and LED displays are also known as future-oriented display technologies and products. They are the future technical route of the large-screen display industry. Now both manufacturers and industry media are carrying out a lot of publicity and marketing. Marketing and business momentum activities. However, LED display-related products are likely to fall into the predicament of electric cars becoming the father of electrics-the practicality is greatly reduced, and more cost maintenance is required on a daily basis.
Please don't believe it. Because LED manufacturers do not tell the truth completely, they try to maximize the advantages of their products in commercial publicity, and deliberately avoid the disadvantages of avoiding the usual operation of light weight. Only from the current market research and user feedback, the LED display is exposed The shortcomings of frequent failures, the shortcomings of frequent failures give users the feeling that users use the product normally and frequently maintain the product.
The reason why the LED display frequently needs maintenance is that the LED display is prone to lamp bead defects (including bright spots, black spots, etc.), and the brightness attenuation and attenuation of the unit modules are inconsistent. However, these lamp bead defects and unit module attenuation problems of the LED display are derived from its own production technology, so they can basically only be changed.
Taking the ordinary P2.5_LED display as an example, the dot spacing between LED lamp beads is 2.5mm, and there are 160,000 LED lamp beads per square meter of LED display. Obviously it is a product produced by precision processing technology. The current production Technology has very high requirements on the production line, but the current technology and technology
Faced with the problem of unit attenuation, although the manufacturer chooses the same batch of products for uniform color adjustment during shipment to ensure that the color difference of the display unit of the same batch reaches the minimum value, the screens of the same batch are also completely white under the condition of completely white screens. There is a problem of minimal chromatic aberration, which is inevitable. Because the backlight parameters of each screen cannot be exactly the same, there are usually deviations that people see, especially after the product is used for a period of time, as the brightness attenuation curves between different units are inconsistent, the color difference of the display screen becomes more and more serious.
In fact, according to market surveys and user feedback, LED displays generally begin to expose problems within half a year to one year after the new setting in the actual use environment, and the status of the display becomes unstable. Small problems that frequently occur include lights. Bead damage/bright spots or inconsistent brightness attenuation of the entire unit (does not affect the use but affects the appearance), the big problem is that the direct screen and black screen need to stop maintenance
The fault maintenance of the LED display is usually not completed by ordinary equipment maintenance personnel. Generally speaking, manufacturers need to arrange engineers for maintenance, and the maintenance process is also very troublesome. The damaged target display unit needs to be disassembled for maintenance or directly replaced (usually maintenance is preferred, and the new display unit is directly replaced. The brightness of the old and new display units is attenuated. The curves are inconsistent, and it is easy to form the phenomenon of Yin-Yang screen with different light and shade), which is very time-consuming.
Especially now that there are COB small-pitch LED displays, the complexity of fault repair is higher. In order to realize the finger touch function on the screen, a transparent glass mask is installed on the surface of the lamp bead of the display. If this COB small-pitch LED display fails and needs to be repaired, you need to uninstall the glass mask installed at this level before proceeding to the next repair of the screen.
Compared with the LED display, the laser display is a simpler and more reliable large-screen display product, because the laser light source it uses has good long-term stability (laser is called the brightest light by the scientific community. There is almost no degradation), the service life is as long as 60,000 hours, and there will be no obvious image quality degradation and other problems in normal use for 5-7 years, and maintenance is basically not required.
At the same time, the laser screen adopts the cabinet structure design as a whole, and the cabinet becomes a small system, which not only has good sealing performance, but also eliminates the influence of other external factors on the laser screen itself. The cabinet has a good small system adjustment function, and the cabinet temperature can be adjusted independently. , Humidity and other environmental indicators to maintain a cool and dry working environment for electronic equipment
