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LED display advertising media also has the characteristics of high efficiency and high advertising reach rate, and its price is relatively low compared to media release forms such as TV and newspapers. This unique value makes full-color LED advertising screen media an upstart in outdoor media. Unlike traditional outdoor media, full-color LED displays are not only outdoor media, but also have the characteristics and advantages of TV and other media. It has greater creative space and space-time exchange space to meet individual needs and achieve digitalization.

       This type of problem often occurs when using LED displays. At first, the LED display screen works normally on the product, but after a period of time * will appear strong light, flicker, malfunction, intermittent brightness, etc., which will seriously damage the product. The reasons for this phenomenon are roughly as follows. 1. When using the product, there is a welding process problem. If the welding temperature is too high, the welding time is too long, and the anti-static operation cannot be performed, more than 95% of these problems are caused by the sealing process.

       2. Get the quality or production process from the led itself.

Precautions.

       1. Strictly control the welding process.

       2. Carry out product aging test.

       Life is an important guarantee for the reliability of electronic products, and it is the most indispensable link in product production. The performance of LED products can be improved after aging, which helps to stabilize the performance of the products in the later period. LED display aging test is a very important part of product quality management, but it often fails to aging correctly and effectively. The light-emitting diode aging test is a measure to improve the reliability of the product based on the product failure rate curve, that is, the "bathtub curve" characteristics. In short, the aging test will sacrifice the life of a single LED product.

        LED aging methods include constant current aging and constant voltage aging. Constant current means that there is current at all times. This is a frequency issue. Non-constant current. This is communication or fluctuation. AC current source or pulse power supply can be designed to a certain effective value, but this kind of power supply cannot be called a constant current source. Constant current degradation is a characteristic of LED work and a scientific way of LED degradation. Overcurrent impact degradation is also a new degradation method adopted by LED display manufacturers. The constant current source of frequency modulation and current modulation is used to make the degraded LED can judge the quality and expected life of the LED in a short time. In addition, it is usually not possible to choose Many risk points.