Abstract: LED large-screen media also has an advertising feature with high effective arrival rate. Compared with television, newspapers and other media, the price is relatively low. These unique values ​​make full-color LED display media a natural part of outdoor media. Unlike traditional outdoor media, full-color LED displays are not just outdoor media. They also have the characteristics and advantages of television and other media. Moreover, full-color LED displays are not merely an extension of outdoor media and television media. They have a larger creative space and a more spacious space that interacts and communicates with consumers in space and time, and can meet individual needs, with the spread of the digital age. The concept is a unique form of screen.
The LED large-screen media also has an advertising feature with a high effective arrival rate. Compared with television, newspapers and other media, the price is relatively low. These unique values ​​make full-color LED display media a natural part of outdoor media. Unlike traditional outdoor media, full-color LED displays are not just outdoor media. They also have the characteristics and advantages of television and other media. Moreover, full-color LED displays are not merely an extension of outdoor media and television media. They have a larger creative space and a more spacious space that interacts and communicates with consumers in space and time, and can meet individual needs, with the spread of the digital age. The concept is a unique form of screen.
We often have such problems in the application of LED, LED screen is normal work on the product at the beginning, but after a period of time will appear dark light, flashing, fault, intermittent light and other phenomena, to the product Bring serious damage. The causes of this phenomenon are roughly:
1. When applying the product, there are problems in the welding process, for example, the welding temperature is too high, the welding time is too long, and the anti-static work is not done. More than 95% of these problems are caused by the packaging process.
2. The quality of the LED itself or the production process.
Prevention methods include:
1. Make a good control of the welding process.
2. Aging test the product.
Aging is an important guarantee for the reliability of electronic products and is the final and essential step in product production. LED products can improve performance after aging, and contribute to stable performance in later use. The LED full-color aging test is a very important part in product quality control, but it is often overlooked in many cases and cannot be correctly and effectively aged. LED aging test is based on the product failure rate curve that is the characteristics of the bathtub curve to take measures to improve product reliability, but this method is not necessary, after all, aging test is to sacrifice the life of a single LED product For the price.
LED aging methods include constant current aging and constant voltage aging. Constant current source means that the current is constant at any time. There is a frequency problem, it is not constant. That is AC or pulsating current. AC or pulsating current sources can be designed to have a constant effective value, but this type of power source cannot be called a "constant current source." Constant current aging is the most consistent LED current operating characteristics, and is the most scientific LED aging method; overcurrent shock aging is also a kind of aging method newly adopted by the manufacturer. Through the use of adjustable frequency, current adjustable constant current source for such aging In order to judge the quality life expectancy of LED in a short time, and can pick out a lot of hidden LED that can't be singled out by conventional aging. [Editor: ltongled]
The LED large-screen media also has an advertising feature with a high effective arrival rate. Compared with television, newspapers and other media, the price is relatively low. These unique values ​​make full-color LED display media a natural part of outdoor media. Unlike traditional outdoor media, full-color LED displays are not just outdoor media. They also have the characteristics and advantages of television and other media. Moreover, full-color LED displays are not merely an extension of outdoor media and television media. They have a larger creative space and a more spacious space that interacts and communicates with consumers in space and time, and can meet individual needs, with the spread of the digital age. The concept is a unique form of screen.
We often have such problems in the application of LED, LED screen is normal work on the product at the beginning, but after a period of time will appear dark light, flashing, fault, intermittent light and other phenomena, to the product Bring serious damage. The causes of this phenomenon are roughly:
1. When applying the product, there are problems in the welding process, for example, the welding temperature is too high, the welding time is too long, and the anti-static work is not done. More than 95% of these problems are caused by the packaging process.
2. The quality of the LED itself or the production process.
Prevention methods include:
1. Make a good control of the welding process.
2. Aging test the product.
Aging is an important guarantee for the reliability of electronic products and is the final and essential step in product production. LED products can improve performance after aging, and contribute to stable performance in later use. The LED full-color aging test is a very important part in product quality control, but it is often overlooked in many cases and cannot be correctly and effectively aged. LED aging test is based on the product failure rate curve that is the characteristics of the bathtub curve to take measures to improve product reliability, but this method is not necessary, after all, aging test is to sacrifice the life of a single LED product For the price.
LED aging methods include constant current aging and constant voltage aging. Constant current source means that the current is constant at any time. There is a frequency problem, it is not constant. That is AC or pulsating current. AC or pulsating current sources can be designed to have a constant effective value, but this type of power source cannot be called a "constant current source." Constant current aging is the most consistent LED current operating characteristics, and is the most scientific LED aging method; overcurrent shock aging is also a kind of aging method newly adopted by the manufacturer. Through the use of adjustable frequency, current adjustable constant current source for such aging In order to judge the quality life expectancy of LED in a short time, and can pick out a lot of hidden LED that can't be singled out by conventional aging. [Editor: ltongled]
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