From the point of view of practical application, installation is simple to use, the relatively small volume of high-power LED devices in most lighting applications will replace traditional power led devices. Small power LED lighting in order to meet the needs of the lighting, the focus must be on many LED light energy in order to meet the design requirements, but the drawback is that the line is very complex, poor heat dissipation, in order to balance the current between each LED voltage relationship, must be designed to the complexity of the power supply circuit. In contrast, the power of the high-power single LED is much larger than the number of small power LED the sum of the power supply line is relatively simple, perfect heat dissipation structure, physical properties and stability. So, packaging methods and packaging materials for high-power LED devices can not simply apply the traditional low-power LED devices and packaging methods and packaging materials. A new and higher requirements for large power dissipation, large heat and high light efficiency to LED packaging technology, packaging equipment and packaging materials.