With the gradual maturity of LED product manufacturing technology, the cost is getting lower and lower, and the cost performance is getting higher and higher. At present, small-power LED products have a large application range in commercial fields such as large-screen outdoor display. How to increase the service life and reduce maintenance costs is also the focus of the industry. A positive attitude to solve the high cost problem is to analyze its failure mechanism and make up for technical defects to improve the reliability of LED products and improve the cost performance of LEDs.
In theory, LED products are considered to be ineffective when the light output is attenuated to 50%. The failures discussed in this paper refer not only to the median life failure of the LED due to the decrease in luminous flux, but also to the failure of the circuit caused by other causes, that is, various factors that cause the performance of the LED device to degrade.
The failure mode of LED products has the following aspects in terms of the current observations: open circuit failure, light loss, and degradation failure. The former is due to the complete failure of the LED product due to the break of a certain point in the electrical circuit, and the latter is caused by the passive compounding of the LED product, causing the light conversion efficiency to decrease, causing the luminous flux to decrease. As for the deterioration failure, it is due to the failure of the product due to aging of the product during prolonged use.
LED failure analysis is the process of analyzing LEDs that have failed. In order to understand the cause of device failure, it is necessary to conduct a comprehensive study of each component of the LED. Firstly, the failure time of the LED should be analyzed. For components close to the design life, no analysis will be performed for decommissioning. Other components will consider whether to perform the photoelectric parameter test and then perform the appearance test if it is open circuit failure. If the open circuit fails, the optical microscope, metallographic microscope, etc. will be used for visual inspection to analyze possible defects. If there is a failure at the pin and bond, the electronic probe microscopy will be used to analyze the cause of the pin failure. Infrared testing of the components to find internal defects. Finally, a fixed point analysis test is performed on the defect part to determine the cause of the failure.
In the failure analysis process of LEDs, it is necessary to pay attention to the interconnection between various failure modes, to be recognized in the analysis process, to combine the failure time, the application environment, and to find an appropriate method to distinguish.
Although it is important to improve the detection conditions and methods to find the cause of failure in the research process, it is more important to be aware of the importance of failure prevention. Therefore, after using the failure analysis to determine the cause of LED failure, find out to avoid recurrence. The method of failure mode of the same type is the purpose of failure analysis.
Car Accessories is a new field of our company develop, which including the USB Charger Socket, LED Light , Car Lighter Plug and etc.
The USB Car Charger is available in many different modal, there is round and rectangle shape. The bottom of this USB Charger could be solder terminal also could be wiring. All the input and output are direct current and it is normally applied in the Marine, Truck, Camper, motor home, boat etc.
The LED Light is IP56 waterproof rating, which could better protect the LED Bulb from the water or harsh environment. Energy Saving
LED Lamp could not only used in RV but also could use in many other application of Marine, Truck, Camper, motor home, Limousine, Travel trailer, caravan, boat etc. There are 12V DC 24VDC Voltage could be choose from. The Emitting Color could choose, including Red, White, Blue and etc. The Working life of the Ceiling Light is 30,000 Hours, which is a long time for use.
Cigarette Lighter Plug is also available in many modals, the input and output are direct current and it is normally applied in the Marine, Truck, Camper, motor home, boat etc.Normally fits 18AWG wire cable
Car Accessories
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