With the rapid development of the automobile market in recent years, more and more green-brand cars can be seen on the road. These green-brand pure electric cars are jokingly called “electric fathers” by netizens. The reason for this title is that the car is originally an improved product that improves the convenience of our lives. It can liberate our legs and go anywhere anytime;
However, due to the limitation of cruising range and imperfect charging facilities, electric vehicles have brought huge inconvenience to the daily use of car owners. Aside from the inconvenience of daily charging, even the necessary cold and warm air conditioning in winter and summer must be considered as car owners. Use it to give priority to ensuring the supply and guarantee of limited electric energy for driving mileage. As a travel tool, car owners cannot enjoy a convenient and comfortable driving experience.
Like electric vehicles, LED display technology and LED display are also known as future-oriented display technologies and products. They are the future technical route of the large-screen display industry. At present, both manufacturers and industry media are focusing on them. Publicity, marketing and commercial campaigns.
But what needs to be vigilant is that due to the uneven quality of LED display produced by LED display manufacturers, some LED displays have a certain probability of falling into the predicament similar to electric vehicles becoming “electric fathers”-practicality is greatly reduced, and daily expenses are required. More cost maintenance.
Don’t believe it, because some LED display manufacturers don’t tell the truth completely to their customers. In the commercial promotion, the advantages of the products are as high as possible, and the deliberate avoidance of shortcomings is a routine operation to avoid the most important ones;
only from the current market research and user feedback, Some LED displays have exposed the shortcomings of frequent failures, and the shortcomings of frequent failures give users the impression that users have changed from normal use of the product to frequent maintenance (waiting) products.
Investigate the reasons why the LED display frequently needs maintenance, because the LED display is very prone to lamp beads (including bright spots, black spots, etc.) and the brightness attenuation and inconsistent attenuation of the unit modules; and these lights of the LED display The problem of bead dead pixels and unit module attenuation is due to its own production technology, so it can only be improved but cannot be eliminated.
Taking the ordinary P2.5 LED display as an example, the dot pitch between LED lamp beads is 2.5 mm, and there are 160,000 LED lamp beads per square meter of LED display. Obviously, this is precision processing. Although the current production process has very high requirements on the production line, with the current technology and process, there is still no guarantee that each batch of LED screens produced will not have bright/dead pixels.
In the face of the problem of unit attenuation, although the manufacturer will choose the same batch of products for unified color adjustment when shipping, to ensure that the color difference of the display unit of the same batch reaches the minimum value, but even so, the screen of the same batch is There will still be minimal chromatic aberration under the condition of a completely white picture, and this is unavoidable, because the backlight parameters of each screen cannot be exactly the same, and there will usually be deviations visible to the human eye; especially when the product is passing through for a period of time. After the use of time, as the brightness attenuation curve between different units is inconsistent, the color difference of the display screen will become more and more serious and obvious.
In fact, according to market research and user feedback, LED displays generally begin to expose problems within half a year to a year after the new installation in the actual use environment, and the screen display status begins to be unstable. Among them, the more frequent occurrences are Minor problems include dead pixels/bright spots of the lamp or inconsistent brightness attenuation of the entire unit (although it does not affect the use but affects the aesthetics), and the big problem is the failure of the direct screen or black screen that requires shutdown and maintenance.
The fault maintenance of the LED display is usually not completed by ordinary equipment maintenance personnel. Generally speaking, the manufacturer needs to arrange an engineer to repair, and the repair process is also more troublesome. It is necessary to disassemble the damaged target display unit for repair or Direct replacement (usually tend to repair, directly replace the new display unit, the brightness attenuation curve of the new and old display unit is inconsistent and it is easy to form the phenomenon of Yin and Yang screens with different brightness), which is very time-consuming and labor-intensive.
In particular, there is currently a COB small-pitch LED display, which is more complicated to repair, because in order to facilitate the realization of the finger touch function on the screen, a transparent glass mask is installed on the surface of the display lamp beads. When this kind of COB small-pitch LED display fails and needs to be repaired, the additional glass mask needs to be hoisted and unloaded before the screen can be repaired and maintained.
Therefore, in order to buy products such as LED displays, try to choose high-quality LED display manufacturers like HOLA-LED, so as to better avoid various maintenance costs caused by quality problems.