Common sense of anti-aging that led display has to know

At the same time, LED display advertising media has the advertising characteristics of high effective arrival rate. Compared with TV, newspaper and other media, the price of LED display is relatively low. These unique values make full-color LED advertising media naturally become the new upstart of outdoor media. Different from traditional outdoor media, full-color LED display screen is not only outdoor media. At the same time, it has the characteristics and advantages of TV media. It has a larger creative space and a broader three-dimensional space for interaction and communication with consumers in time and space. It can meet the personalized needs. It has the concept of communication in the digital era and is a unique screen form.

This kind of problem often occurs when we use LED display screen. LED display screen is normal at the beginning of the product, but after lighting for a period of time, there will be dark light, flashing, fault, intermittent lighting and other phenomena, causing serious damage to the product. Through research, we know that the causes of this phenomenon are as follows:

1. In the application of products, there are some 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 lamp bead quality or production process.

Prevention method

1. Control the welding process.

2. Aging test of products

Aging is an important guarantee for the reliability of electronic products and an essential step in product production. The aging of LED products can improve the performance and help to stabilize the performance of later use. LED display aging test is a very important part in product quality control, but it is often ignored in many cases, so it is unable to conduct correct and effective aging. Led aging test is based on the characteristics of the failure rate curve of the product, that is, the bathtub curve, to improve the reliability of the product, but this method is not necessary, after all, the aging test is at the expense of the life of a single LED lamp bead product.

Led aging includes constant current aging and constant voltage aging. Constant current source means that the current is constant at any time. There is a problem of frequency, not constant current. That's alternating current or pulsating current. AC or pulsating current source can be designed with constant effective value, but this kind of power source can not be called constant current source. Constant current aging is the working feature of LED current, and it is a scientific way of LED aging. Overcurrent impact aging is also a new aging method adopted by LED display manufacturers. This kind of aging is carried out by using constant current source with adjustable frequency and current, so as to judge L in a short time Ed quality life expectancy, and can pick out a lot of conventional aging can not pick out the hidden dangers of LED.