What causes the aging of the LED full-color screen?

Abstract: What does the burn-in test for LED full-color screens mean? We often encounter such problems when we use LED full-color screens. The LED full-color screens work normally at the beginning of the product, but after a period of time, there will be dim light, flickering, faults, intermittent lighting, etc. , Causing serious damage to the product. What does the aging test of the original LED full-color screen that caused this phenomenon mean? We often encounter such problems when we use LED full-color screens. The LED full-color screens work normally at the beginning of the product, but after a period of time, there will be dim light, flickering, faults, intermittent lighting, etc. , Causing serious damage to the product. The reasons for this phenomenon are roughly as follows: 1. When the product is applied, there are problems with the welding process, such as high welding temperature and long welding time, and failure to do anti-static work. More than 95% of these problems are caused by the packaging process. 2. The LED full-color screen is caused by its own quality or production process. The prevention methods are: 1. Do a good job of controlling the welding process. 2. Carry out aging test on products: aging is an important guarantee for the reliability of electronic products, and it is the last essential step in product production. LED products can improve performance after aging, and contribute to stable performance in later use. The full-color screen aging test is a very important part of product quality control, but it is often overlooked and cannot be properly and effectively aging. The 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, the aging test sacrifices the life of a single LED product. At the cost. LED full-color screen aging methods include constant current aging and constant voltage aging. Constant current source means that the current is constant at any time. If there is a frequency problem, it is not a constant current. That is alternating current or pulsating current. AC or pulsating current source can be designed to have a constant effective value, but this kind of power source cannot be called a constant current source. Constant current aging is the most scientific LED aging method in line with the working characteristics of LED current; overcurrent impact aging is also the latest aging method adopted by LED full-color screen manufacturers by using a constant current source with adjustable frequency and adjustable current. This kind of aging is used to judge the quality and life expectancy of the LED in a short time, and it can pick out many hidden dangers that cannot be singled out by conventional aging. [LED unit board] [Making touch display] [LED display installation]
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