The big screens in shopping malls you pass every day, the cool backgrounds when watching concerts, and even the information prompts in the subway - these are all LED displays! But when it comes to where it is used most harshly, many people are probably confused. Don’t rush away yet, today we will take a look at these LED giants hidden under your nose. I’m sure you will slap your thighs after reading it: “So this thing can be used in this way!” "

​​▍ Business District Streets: Leaders in the Advertising Industry​​
To be honest, there are not many large LED screens now that are embarrassed to be called commercial streets. Last year alone, 230,000 outdoor advertising screens were added across the country, especially those five or six-story curved screens that, when lit up at night, can illuminate the entire street as if it were daytime.

Why are businesses so crazy? Three words:​ ​Eye-catching​​！

• Breakfast discounts are displayed at 8 a.m., milk tea buy one get one free at noon, clothing promotions are broadcast in the evening, and one screen can be used as ten store clerks
• During festivals, you can also play naked-eye 3D. Last Christmas, a business district used a curved screen to create the effect of falling snowflakes, which doubled the number of customers.
• Even more ruthless is the smart screen with environment sensing, which automatically increases the brightness when it rains and displays an air quality warning when PM2.5 exceeds the standard.

What do you think is the most amazing thing? Some high-end shopping malls have screens embedded in floor tiles, which trigger interactive ads when people step on them. This thing looks like science fiction, but it has actually been around us for a long time.

​​▍ Stage Acting: The Lighting Engineer’s Secret Weapon​​
Anyone who has followed a concert knows that today’s stage background can no longer be filled with just a few scenery boards. Take the tour of a top-notch singer last month. The entire stage used more than 800 square meters of LED floor tile screens + 360-degree surround screen. The visual effects cost the producer more than 3 million yuan - it is really expensive, and the explosion is also a real explosion.

There is a lot to pay attention to here:

• ​​The ground screen needs to be stepped on​ ​: Dancers cannot jump without delay, and must use a special screen with a refresh rate of 1920Hz or above.
• ​​The ring curtain should be curved enough​ ​: The minimum bending radius must be less than 5cm to create a cocoon effect
• ​​Waterproof and sweatproof​ ​: The outdoor stage was caught in a heavy rain? IP65 protection level is a life saver

What impressed me the most was the virtual shooting studio. Nowadays, green screens are no longer needed when making movies. Instead, the LED screen is used as the background. The actors standing in the middle look like they are really in the snow-capped mountains and desert. I heard that this technology can cut post-production costs in half. No wonder even major online film crews are rushing to use it.

​​▍ Sports events: Score broadcast is just the appetizer​​
Anyone who has been to a live football match must have seen those long screens on the fence, right? Don't underestimate these "leftover materials", they are doing technical work:

1. Real-time replay must be within 50ms delay. The referee relies on it to see VAR.
2. On cloudy days, increase the brightness to 7500cd/m², otherwise the audience will not be able to see clearly.
3. Football and basketball are fine, but at the speed of an ice hockey game, it’s impossible to catch the ball without some dynamic compensation technology.

Last year, an international competition was even more outrageous, turning the auditorium into a giant screen. A small LED board is installed on the back of each seat, and 100,000 people can interact with the lights by scanning the QR code with their mobile phones. This isn't watching a competition, it's clearly a participation in a science and technology temple fair!

​​▍ Hidden Boss: Corners you never thought of​​
Some places use LED screens in a very tricky way:

• The hospital registration hall uses it as an electronic guide board, and it can also display the progress of calling numbers.
• A hot pot restaurant has a screen embedded in the dining table, and you can watch the ingredient traceability video when you scan the QR code to order.
• Even pig farms use it! Monitor the conditions of the sow farrowing room, and the temperature and humidity data are directly displayed on the wall

The most amazing thing is the transportation field. In a certain city, traffic lights were transformed into LED displays to direct traffic during normal times and turn into warning signs in seconds during emergencies. It is said that this system has improved the traffic efficiency of the road section by 40%. Sure enough, technology can change life.

Editor's opinion: To be honest, LED screens are no longer just display tools. What matters now is​ ​Scene fusion + intelligent interaction​ ​, just like the fence screen our company made for the Tokyo Stadium, which can not only broadcast scores but also serve as security monitoring. In the future, I guess even the refrigerator door at home will have to be turned into an LED screen - don't laugh, there are already manufacturers doing it! Next time you see a screen that is used in a particularly flashy way, 80% of it uses low-brightness and high-gray technology. This thing can prevent the screen from turning white under strong light. It is a perfect black technology.

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