With the active participation of everyone, more and more issues related to LED displays have come to light. Initially, LED welding works properly when the product is first turned on, but after some time of operation, problems such as dark spots, flickering, malfunctions, and intermittent brightness can occur, which can cause serious damage to the product. In the previous section, we discussed the basic process of LED billboard manufacturing. This chapter focuses on how to prevent the aging of LED display products, offering valuable insights for your reference.
Aging is a crucial step in ensuring the reliability of electronic products and serves as the final essential stage in the production process. After aging, LED products can enhance their performance, leading to more stable operation during long-term use. LED aging testing plays a vital role in quality control, yet it is often overlooked or not conducted properly, which can lead to subpar results.
The LED aging test is typically based on the failure rate curve of the product, also known as the bathtub curve, aiming to improve product reliability. However, this method isn't always necessary. After all, aging tests involve sacrificing the lifespan of individual LED products for the sake of quality assurance.
There are different methods for LED aging, including constant current aging and constant voltage aging. A constant current source ensures that the current remains consistent at all times. If there is any frequency fluctuation, it's no longer considered a true constant current—this would be AC or pulsating current. Although an AC or pulsating current source can be designed to maintain a constant RMS value, it still cannot be classified as a "constant current source."
Constant current aging is the most suitable method for LED products, as it aligns with their natural working characteristics and is the most scientifically sound aging technique. Overcurrent aging is another modern approach adopted by many manufacturers. It involves using a constant current source with adjustable frequency and current settings, allowing for a quicker assessment of the LED's expected lifespan. This method helps identify hidden defects that may not be detected through traditional aging processes, making it an effective tool for quality assurance.
The company adheres to the management policy of "seeking truth and dedication" and a strict quality assurance system. In the new century, we will follow the tenet of "innovation, progress and rigor" and a forge ahead enterprise with "excellent quality and excellence". Spirit, the supreme product, add wings to your enterprise take off. Carefully do a good job of each product, the highest quality, and integrate a dedicated attitude, dedicated spirit, skilled practice, and good reputation into the details of the service.
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