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Why LED LED beads are so critical

Author:Luwis zeng Date:8/2/2018 5:54:36 AM
LED lamp bead is the most expensive and most used component of LED display, which plays a leading role in the quality of LED display. Today we will introduce to readers why LED lamp beads are the most critical components of LED displays. How to identify the advantages and disadvantages of LED lamp beads?

The most critical component of a full-color LED display is the LED lamp bead. There are three reasons:

First, LED is the key component used in the full-color screen machine, using thousands to tens of thousands of LEDs per square meter;

Second, LED is the main body that determines the performance of the entire screen optical display, directly affecting the audience's evaluation of the display;

Third, LEDs account for the largest proportion of the overall cost of the display, ranging from 30% to 70%.

How to identify the advantages and disadvantages of LED display bead?

First, look at the solder joints. The LED strips produced by the regular LED strips are made by SMT chip process, solder paste and reflow soldering process.

Second, look at the quality of FPC. FPC is divided into copper and rolled copper. The copper foil of the copper plate is convex. If you look closely, you can see it from the connection between the pad and the FPC.

Third, look at the cleanliness of the surface of the LED light strip. If the LED strip produced by the SMT process has a very clean surface, no impurities or stains can be seen.

Fourth, look at the chip and production process of LED lights, the eyes can not see the difference, to use aging equipment and testing equipment, if you put several manufacturers of LEDs on the aging instrument with high current aging for 24 hours or longer Time, you then measure the LED brightness of several manufacturers, see that the LED luminous intensity attenuation is the smallest, the attenuation is the best.

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