Heat treatment is applied to realize highly efficient leds

LED is a semiconductor components, the core is composed of p-type and n-type semiconductor chips. Between the p-type and n-type semiconductor semiconductor has a transition layer, called p - N junction. When injected into p - N junction of carrier amount is enough, you can achieve the effect of the electric energy into light energy. Generally low power LED products have low energy consumption, small volume, fast response time, have a variety of color of light output, long service life of products, and do not contain harmful to the environment of mercury, etc.

although the luminous tube is cold light source, but the LED luminous efficiency is low, the high photosynthetic efficiency/luminous efficiency ( Lumens per watt or lm/W) LED lamps and lanterns applications need to input a lot of energy into light energy. Conductive resistance heat generated in the large current on semiconductor materials, combined with semiconductor material made of LED is not high temperature resistant, cause overheating of the LED lamp light output ratio and life greatly reduced.

the correct thermal management and design to highly efficient LED the working temperature of lamps and lanterns control in an acceptable range, in order to guarantee the reliability of lamps and lanterns, life and the best light output, etc. Figure 2 structure schematic for common LED lamps and lanterns, black arrows indicate the LED module to the cooling heat sink, heat transfer path.

as the base material and enlarge the contact area between the cooling heat sink, you can see contact surfaces are made of fine and irregular concave and convex parts. The concave and convex part will produce a large number of air holes, lead to bad heat conduction; So using appropriate thermal interface materials ( TIM) To fill the air holes in heat conduction path is highly efficient LED lamps and lanterns thermal management and a very important part of the design. Figure 2:

base material and contact area between the cooling heat sink.

to meet the demand of practical application and design LED, dongguan in accordance with the electronic products co. , LTD. Offers a variety of different thermal and physical properties of the interface of the filling material. In addition to the traditional thermal conductive paste and phase change materials ( PCM) Outside, in accordance with the independent research and development of self-adhesive thermal interface padding is more suitable for electrical isolation type LED applications; Combined with many years of experience in product design and size of cutting, can provide users with size stability, is cost effective and easy to operate and assembly of the product of thermal conductivity.