Shenzhen Lianchengfa Technology Co., Ltd.

LED display screens and advertising media also have the advertising characteristics of high effective reach rate. Compared with TV, newspapers and other media delivery forms, the price of LED display screens is relatively low. These unique values make full-color LED advertising screen media become an upstart outdoor media. Different from traditional outdoor media, full-color LED display is not just pure outdoor media. It also has the characteristics and advantages of TV and other media. It has a larger creative space and a wider space for interaction and communication with consumers. It is a unique form of screen that meets individual needs and has the concept of communication in the digital age.

When we use the LED display, we often have such problems. The LED display works normally at the beginning of the product, but after a period of time, there will be dark light, flickering, failure, intermittent lighting and other phenomena. cause serious damage to the product. According to Liancheng's editor's inquiry, the reasons for this phenomenon are roughly as follows:

1. When applying the product, there are problems in the soldering process, such as the soldering temperature is too high and the soldering time is too long, and the anti-static work is not done well. More than 95% of these problems are caused by the packaging process.

2. Due to the quality of the LED itself or the production process.

Prevention method:

1. Do a good job of controlling the welding process.

2. Carry out aging test on the product

Aging is an important guarantee for the reliability of electronic products and an essential step in product production. LED screen products can improve performance after aging, and help to stabilize the performance of later use.

LED display aging test is a very important link in product quality control, but it is often overlooked in many cases, and correct and effective aging cannot be carried out. The LED screen aging test is a countermeasure based on the characteristics of the product's failure rate curve, that is, the bathtub curve, so as to improve the reliability of the product, but this method is not necessary. After all, the aging test is to sacrifice a single LED screen product at the cost of life.

LED screen aging methods include constant current aging and constant voltage aging. A constant current source means that the current is constant at any time. There is a frequency problem, not a constant current. That is alternating or pulsating current. An AC or pulsating current source can be designed to have a constant effective value, but this power supply cannot be called a constant current source. Constant current aging is the current working characteristic of LED display screen, and it is a scientific LED screen aging method. Over-current shock aging is also a new aging method adopted by LED display manufacturers. By using a constant current source with adjustable frequency and current, this type of aging is performed in order to judge the quality and expected life of the LED in a short time, and can choose Many hidden danger LEDs that cannot be picked out by conventional aging.

Precautions in LED display frequency aging test:

1. Someone must participate in the LED display frequency aging test, and any problems should be dealt with in time.

2. Monochrome and grayscale gradient tests should not be less than 48 hours

3. The white screen test time of the LED display frequency is not less than 48 hours

4. Video and text effect test shall not be less than 48 hours

5. Test content: white screen, red, green, blue monochrome, gray scale gradient, video effect and text effect.

The above is the common knowledge of LED display anti-aging that Liancheng sent to you. I hope it will be helpful to you. At the same time, you are welcome to add or correct me. Lianchengfa (LCF) is a national-level specialized small giant enterprise, a LED display application and solution provider integrating "hardware + software + content + interaction". The main business covers four major sections: "Smart City", "Cultural Tourism Commercial Performance", "Commercial Display Engineering", and "Content Technology". It has the world's leading automated production equipment, modern post-doctoral research laboratories and comprehensive sales and services. team. Friends who want to buy LED displays can also contact us Lianchengfa led display manufacturer, a big country brand, trustworthy!