Rare Earth Becomes New Hope for China's LED Green Lighting

The LED green lighting industry is currently a “hot” industry at home and abroad. It is said that it is “not hot enough”. On the one hand, the future protection of LED green lighting in the energy conservation and emission reduction and low carbon economy and the value of the market investment make the industry “hot”. On the other hand, because objectively, the LED itself has a characteristic of both illuminating and heating, so that many current LED products cannot be solved because of the inability to solve the heat dissipation problem.

In the industry, rare earth metals are known as “industrial MSG”. The addition of rare earth elements can miraculously improve the properties of materials. Today, rare earth materials have been widely used in many industries. In LED high-power lighting products, rare earths not only serve as raw materials for phosphors, but also play a new role in light distribution, surface coating and heat dissipation.

The person in charge of Suzhou Zhongze Optoelectronics Technology Co., Ltd. said: Heat dissipation is a key factor affecting the practicality of high-power LEDs. It replaces traditional solid-crystal silver paste and heat conduction by using rare earth room temperature liquid metal with thermal conductivity up to 100W/(m·°C). The paste acts as a binder and filler to reduce thermal resistance and break the thermal bottleneck of high-power LEDs. In addition, the use of rare earth aluminum alloy materials to make heat sinks can increase heat transfer and effectively promote heat dissipation. After many years of research on rare earth materials, it has been applied to various key links such as packaging, heat conduction, heat dissipation, light distribution lens and lamp housing structure design of LED lamps, realizing the combination of new materials and innovative processes, and completely solving high-power LEDs. The international problem of difficult lighting and light distribution is difficult.

In addition, in order to further improve the reliability of the LED, a rare earth ceramic package substrate having the same thermal conductivity is used instead of the conventional metal substrate, and the wafer and the substrate can be effectively prevented from falling off. Doping the glass lens with a rare earth element can reduce the light absorption and dispersion coefficient of the lens and increase the light transmittance. It can be seen that rare earth materials play an important role in high-power LED lighting fixtures, and solve the key technical problems of heat dissipation, light distribution, packaging, and improvement of light efficiency of LED lamps.

China's rare earth resources are rich, and it is expected to make great achievements in LED green lighting products. Let us see the new hope of China's LED green lighting!