Want LEDs to be "longevity"? You must understand the LED anti-corrosion knowledge
2019-05-03

Avoiding LED corrosion is an important part of improving LED reliability. This paper analyzes the causes of corrosion of LEDs and gives the main method to avoid corrosion - avoiding LEDs close to harmful substances, and effectively limiting the concentration levels of harmful substances and ambient temperature.


Q: How can I avoid LED corrosion?


Key words: LED corrosion corrosion product performance optoelectronic components


The reliability of LED products is one of the important specifications used to estimate the life of LED products. Even in most different conditions, general LED products can continue to operate. However, once the LED is corroded, the LED reacts chemically to the surrounding environment, which degrades the performance of the LED product.


In order to avoid corrosion of the LED, the best way is to avoid the LED approaching harmful substances. Even a small amount of harmful substances can cause LED corrosion. Even if the LED is only in contact with corrosive gases during processing, such as machines in a production line, it may have an adverse effect. In these cases, it is usually possible to observe whether the LED components are damaged before the actual system setup. In particular, it should be protected from sulfur (Sulfur).


Below are some examples of potentially corrosive substances (especially hydrogen sulfide) including:


O-ring (O-RING)


washer


Organic rubber


Foam pad


Sealing rubber


Sulfur-containing vulcanized elastomer


Shock absorbers


If these hazardous substances cannot be completely avoided, LEDs with higher corrosion resistance should be used. However, keep in mind - limiting the effects of corrosion, depending on the concentration of harmful substances. Even if you choose a more durable LED, you should minimize the exposure of these LED materials.


Generally, heat, humidity, and light can accelerate the corrosion process. However, the main influencing factor is the concentration level and temperature of the harmful substances, and limiting them will be an important method to protect the LEDs.


Source: HC LED screen