The development of technology, led advertising screen monochrome display from the very beginning of the development is now full color led display, full color display media also have a valid arrival rate of advertising features, and the price is relatively low, and the traditional outdoor media is different, it while both the features and benefits of television and other media, with greater creativity and broader consumer-dimensional space and time and space of interaction and communication, to meet individual needs, with the spread of the concept of the digital age, is a unique screen form.

We often occur in the application of this kind of problem led, led display at the beginning of the product is working properly, but after some time there will be the lighting dim light, flashing, fault, intermittent light and other phenomena, to products bring serious damage. The cause of this phenomenon generally are: the application of the product, there is a problem of welding processes, such as welding temperature welding time is too long, did not do the work of anti-static, these issues are more than 95% encapsulation process caused. Or led their quality or cause production process.

Prevention is simply aging test, aging is an important guarantee for the reliability of electronic products, is the last necessary step of production. LED products can improve performance after aging and contribute to the effectiveness of a stable post-use. led advertising screen burn-in test in product quality control is a very important part, but in many cases is often overlooked, can not be correct and effective aging. LED aging test is based on the product's fault countermeasure curve that is characteristic of the bathtub curve taken in order to improve the reliability of the product, but this method is not required, after aging test at the expense of single LED product life for the price.

LED aging modes include constant voltage constant current aging and aging. Constant current source means that at any time the current constant. Has a frequency of problems, it is not a constant. That is an AC or pulsating current. AC or pulsating current source can be designed to RMS is constant, but the power supply can not be called a constant current source. Aging is the most constant LED current job characteristics, LED aging is the most scientific way; overcurrent impact of aging is led display manufacturers adopt a latest aging means, through the use of adjustable frequency, current adjustable constant current source Such aging, in a short time to judge the quality of the life expectancy of the LED, and can pick out many conventional aging can not pick out the hidden LED.

So be prepared to buy full color led display friends, be sure to keep their eyes open, select good suppliers, too small is not enough, basically no factory aging test session. Only after the old factory will slow the aging test.