Under the premise that the LED packaging industry has been highly commercialized, it is more important to select the interface thermal conductive material in the thermal conduction solution. The pursuit of the high thermal conductivity of the material itself does not effectively reduce the temperature for a long time, but only increases the unnecessary cost.
High-power LED thermal conduction requirements are particularly focused on energy efficiency, high lumens, and high reliability, and high-efficiency thermal solutions are the key to solving these problems. In general, the temperature drop depends on the thermal resistance of the thermal interface. The thermal resistance depends on the thermal material itself and the appropriate coating thickness, assembly process and interface seamless connection, while the phase change thermal material is precisely to solve the maximum. Reduced interface thermal resistance and maintained long-term reliability.
Nevertheless, the application of phase change thermal conductive materials in the LED industry has a low penetration rate or even no application. On the one hand, the LED industry as a whole is more dispersed, and more manufacturers are pursuing high thermal conductivity and other indicators; on the other hand, domestic enterprises can package The product is stable, and this is the key."
It is understood that the heat generated by the LED elements moves through the packaged wires to the board and then dissipates heat through the heat sink. It is important in the thermal solution to eliminate the factors that hinder heat transfer in the heat transfer path. For example, it is conceivable to use a material with good thermal conductivity in the heat transfer path, to enlarge the cross-sectional area of ​​the path, and to apply a heat-conductive lubricant so that the joint of the product is not left. Void.
The listed companies involved in LED packaging in China mainly include Wanrun Technology, Dehao Runda, Hongli Optoelectronics, Guoxing Optoelectronics, Qinshang Optoelectronics, and Ruifeng Optoelectronics.
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