With the increasing maturity of ceramic circuit board materials and technology, our company produces high precision aluminum nitride ceramic PCB, 3D ceramic plate and dam fencing technology. By the car headlights and other application areas of pro Lai.

Half of the conversion to aluminum nitride ceramic circuit boards for car headlights will rely on design and appearance improvements, including from the lens, the shape of the housing and so on. The other half depends on the replacement of the lamp type, xenon lamps replaced with LED headlights, since the nitride ceramic substrate is the core material of automotive LED headlights, so automotive headlights will be the first to verify aluminum nitride ceramic substrate.

What is the reason for the use of aluminum nitride ceramic circuit boards in car headlights?

The most important reason or aluminum nitride ceramic circuit board heat dissipation function. Because the brightness of LED headlights is high, the working temperature is very high, and the greater the power, the higher the temperature, again improve the brightness only through the fine cooling design or heat dissipation device increase, but the effect is not ideal. Only aluminum nitride ceramic substrate can achieve the desired effect. First of all, the thermal conductivity of aluminum nitride ceramic substrate is 170W, and the thermal conductivity of aluminum substrate is 2W. Secondly, the aluminum ammonia ceramic substrate has very good insulation, and the thermal expansion technology is more suitable for the lamp beads. Aluminum substrate, aluminum nitride ceramic circuit board, alumina ceramic substrate is currently the main automotive headlights used in the substrate with more.

Aluminum base plate, a kind of metal substrates, thermal capacity is higher than plastic substrate, used in car headlights, need better heat dissipation design match, otherwise, junction temperature will remain high, high junction temperature will lead to droop, long the height of the headlight will decay rapidly, and orders, in the design of cooling fan radiator and other costs would be much higher, Compared with ceramic substrate, there is still a need for more insulation process.

Alumina ceramic substrates, the most widely used ceramic substrates, lower cost, thermal conductivity is higher than the aluminum substrate, arguably as headlight substrate is enough, now car headlights leds w from 20 to 60 w power, the light the most intuitive concept is enough light, car companies will naturally think of some way to enhance brightness, brightness increased, the power will go up, The aluminum oxide substrate will not be enough.

Aluminum nitride ceramic circuit board; Is currently the most car LED headlight applications of, compared with alumina ceramic substrates, thermal conductivity is 10 times higher, almost 100 times higher than aluminum plate, used in high-power lamps are the better choice, and orders, the hardness of aluminum nitride substrate will be a much higher than that of alumina, and solve the problem of brittle ceramic substrate. Because now many car companies have changed the LED lights, many links in the production line have not been changed. If the aluminum nitride ceramic substrate is used, it can perfectly apply to the previous production line and save a lot of expenses for the enterprise.