The Benefits of Aging Tests for Efficient Application of LED Displays
Daily life when using the LED display often encounter this problem, LED display at the beginning of normal work, but after using a period of time will appear dark, flashing, fault, intermittent light and other phenomena, giving the user a very bad experience.
LED Controller Store to analyze the reasons.
1, the application of products, welding process problems, such as welding temperature is too high welding time is too long, no good anti-static work, etc., more than 95% of these problems are caused by the encapsulation process.
2, the quality of the LED itself or the production process.
Prevention methods1, do a good job of welding process control.
2, the product aging test.
Aging is an important guarantee of the reliability of electronic products, is the last essential step in the production of the product.LED products in the aging can enhance the performance, and help the late use of the performance of the stability.LED advertising screen aging test in product quality control is a very important link, but in many cases often neglected, can not be correct and effective aging.LED aging test is based on the failure rate of product Curve that the characteristics of the bathtub curve and take countermeasures, in order to improve the reliability of the product.
LED aging methods include constant current aging and constant voltage aging. Constant current source means that the current is constant at any time. With frequency, it's not constant current. That is AC or pulsating current. AC or pulsating current sources can be designed to have a constant RMS value, but this power supply cannot be called a constant current source. Constant current aging is the most in line with the LED current operating characteristics, is the most scientific way of LED aging; overcurrent impact aging is also the latest LED display manufacturers use a means of aging, through the use of frequency adjustable, current adjustable constant current source for such aging, with a view to determining the quality of the LED in a short period of time life expectancy, and can be singled out a lot of conventional aging can not be singled out as a hidden trouble LED.
