Have you ever been attracted by an advertising screen in the mall and couldn't take your eyes off? Or stare at the station and watch the scrolling message for a long time? There is a great deal behind these LED screens that make people unable to see them. Let's talk about it today. What kind of LED advertising screen is considered a real skill。
1. Three hard indicators of a good screen
(Give everyone a key point first) Don’t be fooled by fancy advertising slogans, identify these three key points:
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Brightness must be magic
Indoor 800-1200cd/m² and outdoor 4000-7500cd/m², this brightness range is not casually determined. For example, in a semi-open air environment like a subway station, the screen must be automatically switched between low light in the morning and strong light in the noon, which is the same as the automatic brightness adjustment of the mobile phone screen. Last year, the navigation screen at an international airport fell apart, and the reflection was so reflected at noon that it could not be seen clearly. Later, it replaced the new equipment with intelligent light sense, and the number of passenger inquiries dropped by 30%.
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The refresh rate must be fast enough
≥How did this number 1920Hz come from? Let’s put it this way, if the refresh rate is not enough, the advertising videos shot are all ripple, just like the old TV set’s bad signal. Now even the interactive screens in shopping malls require this standard. After all, when customers take photos with their mobile phones and post them on Moments, they cannot let others take "ghosts".
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The protection level must be tough enough
If the outdoor screen does not have an IP65 protection level, it is betting on the weather. Have you ever seen a seaside billboard? Salt spray corrosion can cause "agency spots" to grow on ordinary screens in half a year. Nowadays, reliable manufacturers will do 72-hour salt spray tests, just like soaking the screen in salt water for three days and three nights. After that, it will have to be displayed normally before passing the test.
2. The devil hidden in the details
(You must avoid these pitfalls) Do you think the parameters are over if you meet the standards? Too naive!
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The seams should be thinner than hair
If the black line at the splicing of the two screens exceeds 1mm, the entire picture will be like patched. Now the top-level technology can achieve seamless splicing of 0.5mm, and the seams cannot be seen at all when standing two meters away. Last year, a car company suffered this loss at a new car conference. The screen seams in the live broadcast camera were criticized by netizens, turning the high-end press conference into a scene of failure.
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The same dialect is required for color
Have you seen the same screen on the left side of the cold side of the right side? This is called uneven color temperature. A good screen will control the color difference to ΔE<2, which is equivalent to the professional-grade display level. You should know that human eyes are very sensitive to colors and almost feel something is wrong.
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Heat dissipation is not a hair dryer
Have you ever seen air conditioners cool down the screen? A shopping mall has really done this, and the electricity bill has doubled. The advanced approach now is to use aviation aluminum as the back plate, and the heat dissipation holes are designed into a maze structure, which is both dust-proof and heat-dissipating. It's just like cooling of gaming laptops, it depends on materials science, not brute force.
3. The most realistic case speech
(Look at the actual performance) Let me talk about some examples of real gold not afraid of fire refining:
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The ultimate challenge of curved screens
The P4 curved screen in a shopping center in Singapore has a radius of 15 meters. Each module of this curved screen needs to be specially calibrated, just like a racing car training suspension system on a curve. When installing, you must use a laser positioner to correct one by one, and the final picture is as natural as if it is printed on glass.
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The load-bearing miracle of floor tiles screens
The tiles on the dance floor in the bar must withstand the "violent trampling" of high heels. The secret is that the surface is covered with 6mm tempered glass and is also subject to anti-slip treatment. A nightclub owner calculated the calculations and after installing this kind of screen, the sales of alcoholic beverages increased by 40%, and young people like to take photos and check in on the glowing dance floor.
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Transparent screen stealth
The transparent screen with an 86% transmissibility in the shopping mall window is ordinary glass during the day and turns into an advertising screen at night. The difficulty of this technology is that it needs to be both light-transmitting and color-producing, which is the same as the fact that the car film needs to be insulated and clear. A certain clothing brand used this and the window display efficiency increased by 3 times.
4. Service is the hidden ace
(Don’t just look at the product itself) A good horse is paired with a good saddle, and the service is useless if you can’t keep up with it:
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24-hour response is not just a joke
A truly reliable manufacturer, engineers can remotely diagnose when they receive repair calls. Once, the screen was black two hours before the New Year's Eve event. The engineer's video guide changed the backup signal cable, which was completed in less than 20 minutes.
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How important is full-cycle support
From the design of the plan to the supply of spare parts in five years, it is the same as buying a car with a 4S store. The fenced screen in a certain gymnasium has been used for seven years, and you can still buy replacement parts of the same model. This is a reflection of your strength.
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The installation team needs to be professional
Don’t underestimate the installation. The tilt angle difference is 1 degree. Long-term use may cause the module to be deformed. The professional team will use three-dimensional lasers to scan the site, which is more careful than measuring the house in the decoration company.
5. The black technology that has come to the future
(Previous spoilers) The competition for the second half of the LED screen is more interesting:
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Breathable screen
Sensing the traffic of people through sensors and automatically adjusting the playback content. For example, static advertisements are displayed when there is no one, and dynamic videos are switched when there is a high traffic. This technology has been piloted in some subway stations.
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Self-healing function
Some light beads can be automatically compensated if they are broken, which is similar to repairing the broken point of the mobile phone screen. Although it has not been fully popular, 80% of fault self-repair can be achieved in the laboratory.
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Zero power consumption standby
When standby, display static content like an ink screen, and this technological breakthrough can cut electricity bills in half. Some manufacturers have tested it on outdoor advertising screens, and the effect is comparable to that of electronic ink screens.
Editor's opinion: Choosing an LED advertising screen is like finding a partner. You can't just look at the appearance (display effect), but also the connotation (technical parameters) and sense of responsibility (after-sales service). Those that can provide Full life cycle serviceandCustomized solutionsThe manufacturer is the real long-term partner. Next time you see the ad screen that makes people shine, you might as well get closer to look at the seams and touch the temperature. Maybe you will find the real kung fu hidden in the details. Remember, the good screen can speak by itself and can stand the double test of time and weather!
