Anti aging common sense of LED display

1. When applying the product, there are problems in the welding process, such as too high welding temperature, too long welding time, and no anti-static work. More than 95% of these problems are caused by the packaging process.

2. LED quality or production process.

Preventive methods

1. Control the welding process.

2. Carry out aging test on products

Aging is an important guarantee for the reliability of electronic products and the last essential step in product production. LED products can improve the efficiency after aging, and help to stabilize the efficiency in later use. The aging test of LED display screen is a very important link in product quality control, but it is often ignored in many cases, and can not conduct correct and effective aging. LED aging test is a countermeasure taken according to the characteristics of the product's failure rate curve, that is, the bathtub curve, to improve the reliability of the product, but this method is not necessary. After all, aging test is at the cost of sacrificing the life of a single LED product.

LED aging methods include constant current aging and constant voltage aging. Constant current source means that the current is constant at any time. There is a problem with frequency, not constant current. That is alternating current or pulsating current. AC or pulsating current source can be designed with constant RMS, but this power source cannot be called a constant current source. Constant current aging is a characteristic of LED current operation and a scientific LED aging mode; Overcurrent impact aging is also a new aging method adopted by LED display manufacturers. Such aging is carried out by using a constant current source with adjustable frequency and current, in order to judge the quality life expectancy of LED in a short time, and can pick out many hidden LEDs that cannot be picked out by conventional aging.