LED, as the fourth generation lighting, with characteristics of energy conversation, environmental, longevity, compact, is now widely used in various fields such as lighting. displaying,piloting, decoration, backlight and so on.
At present , LED electro-optic conversion efficiency is only about 20-30%,about other 70% energy is turned into heat.That is why there is urgent desire in LED heat dissipation.
Electrons combining holes can only engender approximate 90% photons. Current leakage reduces the recombination efficiency in PN region, the leakage current multiplied by the voltage is the power of this part,which is converted into heat.
Not like 15lm/w incandescent lamp converting almost all electric into light and eliminating the heat dissipation problem,only 30% of the internal photons of LED can be emitted to the chip and others finally converted into heat.
LED chip will generate extremely excessive heat in limited space, surmount its heat capacity, this requires efficient heat conduction avoid junction temperature occurrence.
Continuous high temperature of LED lamp caused by working chip, will impact on its service life and stability seriously.the lower the luminous rate brings the higher temperature.
This confusing attracts more and more attention Shenzhen Duobo Electronic technology Co.,LTD has successively developed allround-performance ,user-friendly targeted products for LED market.
Duobo thermal grease series: fine paste, high thermal conductivity.
In order to satisfying mutiple scenarios users, Duobo silicone thermal pad series have various structure, besides taking glass fiber and silicon fabric as reinforcement carrier, designing both single and double sided adhesive to fasten PCB and radiator.
Duobo thermal double-sided tape, 1.0W/m.k-1.5W/m.k ,superior retention. Widely used in cementing PCB/FPC and radiator.
Duobo thermal putty series, good thermal conductivity and weather resistance, fit to complicated structure products, in addition to denoise of dimming products.
Duobo silicone glue series are organic silicone adhesive products with lots of outstanding characteristics: solidify at room temperature, excellent resisting to low and high temperature alternating, no corrosion to metals, aging resistance, anti-seismic,damp proof, good electric insulating and leakage property.
Therefore, in addition to improving the design, it is necessary to select appropriate thermal interface materials in LED.
