What are the reasons for the leakage of LED patch lamp beads?

I believe many people have encountered the problem of LED patch lamp beads leaking electricity, and some people have doubted why LED patch lamp beads leak electricity? In fact, there are many reasons for LED patch lamp beads to leak electricity, such as the following reasons that can cause LED patch lamp beads to leak electricity.

 

1. Improper processing may lead to chip cracking, uneven gel at the bottom of the chip, or voids under the pads, which may damage the chip during wiring, causing leakage or failure. Improper adjustment of the wire bonding machine may damage the chip, causing electrical leakage or failure.

 

2. Improper use causes electric leakage of SMD lamp beads, which rarely occurs. When a high reverse voltage is applied to the LED beads, it may damage the PN junction and cause electrical leakage.

 

3. The electrostatic problem of SMD lamp beads cannot be ignored. Electrostatic discharge requires a conductive circuit, not to say that static electricity can cause damage. When there is only a small amount of leakage of LED lamp beads, the accidental damage caused by static electricity can be considered. If it occurs in large quantities, it is more likely to be a problem of chip contamination or stress.

 

In addition, aging of LED patch lamp beads or improper welding may also cause leakage of LED patch lamp beads.