Hey, do you know? Last month, my friend opened a cafe and had to spend a lot of money to install a "face-changing" LED screen. And guess what? Under the bright sun, the screen is so bright that it can be used as a mirror, but on cloudy and rainy days, it is so dark that it feels like I haven’t woken up. No, let me chat with everyone today——​ ​Does the LED screen have any sense of light? Where are its "eyes" hidden? ​ ​

1. What exactly is light perception?

Speaking human language is the "adaptive mode" of the display screen. Just like our pupils change with the light,​ ​The light-sensitive LED screen can automatically adjust brightness and color temperature​ ​. You must have seen this scene: the external screens of shopping malls are dazzlingly bright at noon, but become soft and eye-catching at night. This is the work of light perception.

For example, the curved advertising screen we installed in a commercial complex in Southeast Asia was equipped with an intelligent light-sensing system.​ ​Daytime energy consumption dropped by 37%​ ​, the key images are always clear. But be careful, not all LED screens come with this function!

2. Where are the light-sensing "eyes" hidden?

Here comes the point! ​ ​A real light-sensing system requires three major components:​​：

1. Hidden in the corner of the screen​ ​ambient light sensor​ ​(Just the black dot the size of a match head)
2. Responsible for calculation​ ​Main control chip​​
3. Can be dimmed in 256 levels​ ​Drive power​​

The fence screen I made for a stadium in Tokyo last year overturned a car - I first installed the sensor at the joints of the box, but as a result, it misjudged when the temperature was high. Later, the problem was solved by moving it to the vicinity of the heat dissipation holes. This shows that​ ​Sensor location is a big question​​。

3. These scenes should use light-sensitive screens

• ​​outdoor advertising screen​ ​: Set to 6000cd/m² on sunny days for bright eyes, and automatically lower to 3500 on rainy days
• ​​Large screen in shopping mall atrium​ ​: Automatically switch between warm and cold light during morning and evening passenger flow peaks
• ​​stage background wall​ ​: The moment the follow light comes over, it can intelligently suppress the highlights.
• ​​Bank information screen​ ​: Late night mode automatically dims without disturbing people

The window screen we installed in a department store in Seoul is interesting.——​ ​Automatically switch based on store business status​ ​, turned into a translucent art installation after closing, which increased customer traffic by 18%!

4. Beginner’s Guide to Buying Anti-Pitholes

1. ​​Don't believe the "auto-brightness" word game​ ​, it depends on whether there is a measured curve chart
2. ​​Touch the corner of the screen to find the sensor​ ​, genuine products have dust-proof rubber rings.
3. ​​Request a demonstration of light and dark switching​ ​, the normal response speed should be within 3 seconds
4. ​​Check drive power parameters​ ​, must support PWM dimming technology
5. ​​Ask about the calibration cycle​ ​, good products only need to be calibrated once every six months.

Remember,​ ​Low brightness and high gray technology is the way to go​ ​! Some screens lose color when the brightness drops. Like the point-by-point correction technology we use, even if it is adjusted to 800cd/m², it can still display the gradient levels of Huoshaoyun.

5. The true words of the old master

After more than ten years of hard work in this industry, I have seen too many people fail. Last week, there was a customer who wanted to buy a screen that was so big that it was "blind" under the sun - why do you think it's cheap? ​ ​Replace the light sensor module with a timer​​！

If you ask me, choosing a light-sensitive LED screen is like looking for a partner.——​ ​You can’t just look at whether it’s bright on the outside, you have to look at whether it’s considerate on the inside.​ ​. Just like when we make screens for export to Japan, we must pass the JIS C 8105 standard certification before we can ship them. after all​ ​Stability is more important than anything else​ ​, are you right?

Last but not least, run away if you encounter a merchant who says "no need to calibrate for life"! No matter how good the light sensing system is, it needs regular maintenance like car maintenance. Our technical team has been tinkering with new algorithms recently, trying to get artificial intelligence to predict environmental changes - if this is going to happen, the LED screen will really have a "brain"!

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