Are you also worried about not finding a reliable LED screen? I saw the cool advertising screens in the mall when I browsed short videos. I was always attracted by the "high-definition and low-price" advertisements when I browsed the web. But after searching, I found--​​Manufacturers are so dizzy that they feel the parameters, and the price is ridiculously different.​! Today, let’s talk about how novice novice should choose a screen so as not to get stuck. (Secretly said: There are hidden skills at the end of the article!)

1. First understand these three soul torture questions

​​1. "What exactly is the screen I want?"​
Many people think that LED screens are the kind of giant billboards in the big square, but in fact, the screen screens refer to​Long-shaped display device​​. For example, you can find a chestnut: promotional price tags on supermarket shelves, exchange rate scroll bars at the bank entrance, advertising subtitles on the roof of taxi... These are all part of the category of strip screens. Its core advantage is​Flexible shape——It can be made into narrow strips 1 meter long, or spliced ​​into ring or wavy shapes.

​​2. "Use it indoors or outdoors?"​​

• ​Indoor screenJust like the "white-collar workers" in the office: the brightness is 800-1200cd/m² enough (too bright is dazzling), focus on itColor Reductionand​Grayscale​. For example, if the red dress is displayed in a clothing store’s window screen, it would be embarrassing!
• ​Outdoor screen​It is "Iron Warrior": the brightness must be ≥4000cd/m² to be clearly visible in the sun, and it must withstand heavy rains. I have a cold knowledge:​A truly qualified outdoor screen will be coated with triple-proof adhesive on the circuit board​, otherwise it may appear in half a year.

​​3. "How long does it take to open every day?"​
The 24-hour rolling promotional screen at the door of the convenience store is completely different from the interactive screen that is only opened on weekends in the mall. Long-term startup must be selected​Common-yin drive technology——Save 50% more power than ordinary screens, and you can save a new device in three years of electricity bills!

2. Keep a close eye on these five parameters when purchasing

1. ​​Pixel spacing (P value)​​
   The smaller the numbers behind P, the clearer they are, but the more expensive they are. Take a chestnut:

• Select P10 on the roof of the taxi (10mm space between each lamp bead) enough
• Luxury store display screen recommendations below P4
  There is a simple algorithm:​Optimal viewing distance = pixel pitch × 1000​​(Unit: mm)

1. ​​Refresh rate must be ≥1920Hz​
   Below this value, ripples will appear when shooting the screen with your mobile phone. The test method is very simple: turn on the camera and aim it at the screen. If you see obvious flicker or stripes, just pass it!

2. ​​Protection level is at least IP65​​
   Especially for outdoor screens, this parameter determines how heavy rain it can withstand. There is an industry secret:​A truly waterproof screen will apply three layers of glue to the joints——Structural glue + sealant + UV glue, any missing layer may leak.

3. ​​The control system must be updated remotely​​
   Imagine: Is there a store to change the promotional price on heavy rain? Now the mainstream screens support​Mobile APP/WiFi Change Words​​, some can also automatically switch content regularly.

4. ​​Warranty period ≥3 years​
   The theoretical life of LED lamp beads is 100,000 hours, but the driver chip and power supply accessories may go on strike first. Focus on​Is the power module warranty included?——Many manufacturers only protect light beads when playing text games!

3. I advise you not to step on these pitfalls

​​"Can you buy super low-priced promotional screens?"​​
Last year, a milk tea shop owner bought a batch of "special price screens" with cheap pictures, but the full screen was green during the rainy season.The lamp beads were actually renovated​! Teach you three tricks to inspect goods:
① When the power is turned on, the light beads will be displayed with a magnifying glass.Is the color even?​
② Touch the screen with your hands,​Temperature is too highThe heat dissipation design may be poor
③ Manufacturer is required to provide72-hour aging test video​

​​"Customized special-shaped screens are expensive, right?"​
Actually, the technology is very mature now! Arc, circle, and wave can be done, the key is​Communicate the installation environment in advance​​. There is a clothing store that makes the screen screen into the shape of a clothes hanger. The customer automatically displays the matching suggestions when trying on the fittings, and the conversion rate is directly doubled.

​​"No one cares after buying it?"​
Find there24-hour technical responseThe manufacturer! I heard that the screen of a chain supermarket was black in the middle of the night, and the engineer arrived in two hours with spare parts - it turned out that they set up all over the country.8 spare parts warehouses​, this kind of service is reliable.

4. Say something heart-wrenching

Are you still confused after reading the parameters? Teach you a trick:​Test the report directly​! Regular manufacturers can provide:

• 72-hour high temperature and high humidity test (temperature 85℃/humidity 85%)
• 200 plug-in and unplug interface tests
• 5000 hours of continuous lighting record

Finally, reminder: Don’t be fooled by the gimmick of “imported chips”! Now the performance of domestic chips is not inferior to that of overseas, the key isPackaging technology——Some large manufacturers use vacuum reflow soldering technology, with the solder joint accuracy reaching 0.01mm, which is the real skill.

(Suddenly lowered your voice) Tell you an insider of the industry:​Manufacturers with monthly production capacity exceeding 10,000 square meters​​, the quality control stability is ten times stronger than that of small workshops! Because they have million-level equipment such as automated patch machines and AOI optical detection, this is not something small factories can afford...

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