LED heat dissipation substrate, in LED product application, usually need to assemble multiple LED on a circuit board. In addition to playing the role of LED module structure; On the other hand, it also plays the role of heat dissipation. Common LED heat dissipation substrate types are hard printed circuit board, high thermal conductivity aluminum substrate, ceramic substrate, soft printed circuit board, metal composite materials. Saving energy and electricity has become the trend today. LED industry is one of the most eye-catching industries in recent years. LED products have the advantages of energy saving, electricity saving, high efficiency, fast reaction time, long life cycle, mercury free, and environmental benefits. However, about 15% of the input power of LED high-power products is converted into light energy, and the remaining 85% is converted into heat energy.
The lab can also provide customers with chip design optimization solutions to help improve chip performance. Chip epitaxial quality problem, The core of LED chip work is epitaxial layer, LED chip epitaxial layer quality is related to the life of the chip, anti-static ability and anti-overelectric stress ability. For chip failure analysis, Jinjian engineers will conduct epitaxial analysis of LED chips, perform voltage resistance test, antistatic ability test, chip appearance observation (whether there are epitaxial layer holes), and comprehensively judge chip epitaxial layer quality.
In order to keep LED junction temperature at a low temperature, it is necessary to use high thermal conductivity, low thermal resistance of heat dissipating substrate materials and reasonable packaging process, in order to reduce the overall packaging thermal resistance of LED. Commonly used cooling substrate materials include silicon, metals (such as aluminum, copper), ceramics (aluminum nitride, alumina) and composite materials, metal materials have high thermal conductivity.
The small power LED lamp heat dissipation
The LED chip can not be directly welded
Heat dissipation material improve LED effect
The role of LED module structure
The heat generated by LED light
LED grains Die bonded to a Substrate
LED heat pass through the electrode metal
LED heat substrate with thermal conductivity
Circuit board of early LED products
The LED grain substrate is a medium