High-power LED thermal alternative substrate technology
Led(led strip lights) in the current application, LCD TV backlighting and illumination applications such as accelerated growth of the two areas, the use of more and more high-power LED, and associated cooling technology is also increasingly important. In order to pursue a better cooling solution, the current major LED epitaxy, chip makers have been put into research of alternative substrate technology, including copper and other metal substrate technology, as well as ceramic, diamond coating of different materials such as substrate technology, hoping Can improve the cooling effect of high power LED. Some manufacturers have already started trial production of a small ship, but generally does not reach the production stage.
The so-called alternative substrate technology, more companies now invest in developing the metal substrate technology, that is, crystal growth on sapphire substrates, after removing its substrate, a layer of metal plating to change, to replace the floor. This new technology development mainly in response to the cooling of high power LED's(led strip lights) high demand, because the metal's thermal conductivity is better, better heat dissipation. However, the demand for sapphire is not changed.
Ideally, LED(flexible led strips) industry is now also study the use of alternative substrate technology, replacing the sapphire substrate, sapphire substrate can be reused, as recycling the same. That is outside the extension of the sapphire, remove the substrate, crystal growth can re-take it, but there is still great difficulty, because it is easy after the crystal growth substrate destruction, thus affecting the effectiveness of its re-use.
Current LED(flexible led strips) epitaxial, chip makers, Taiwan LED makers quite positive, crystal power, Thai Valley have been put into other alternative energy technology development sapphire, hoping to make high-power LED to achieve better heat dissipation. At the same time the direction of R & D is not limited to metal substrates, it is understood, mainly because of the metal have heating or cooling problem, two different types of metals in hot environment, prone to split the state.
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