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Dejian Optoelectronics Shares Tips for Preventing Aging of LED Products
Aging is an important guarantee for the reliability of electronic products and is the final and essential step in product production. LED products can improve performance after aging, and contribute to stable performance in later use. Full-color LED display aging test is a very important part in product quality control, but it is often overlooked in many cases and cannot be properly and effectively aged.
1. LED aging test is based on the product's failure rate curve that is the characteristics of the bathtub curve to take measures to improve product reliability, but this method is not necessary, after all, aging test is to sacrifice a single LED product At the cost of its life.
2. LED aging methods include constant current aging and constant voltage aging. A constant current source means that the current is constant at all times. There is a frequency problem, it is not constant. Constant current aging is the most consistent LED current operating characteristics, and is the most scientific LED aging method;
3. Overcurrent shock aging is also a kind of aging method newly adopted by the manufacturer. Through the use of adjustable frequency, current adjustable constant current source for such aging, in order to judge the quality life expectancy of LED in a short time, and can be singled out Many conventional aging can not single out the hidden LED