WFCOB light source

WFCOB light source

WFC0B (W) and fluorine (F) hose structure is used to manufacture the COB light source.

Technical background

Compared with the single chip package COB package has many advantages in light, heat, light distribution and relative cost, a plurality of small power array because light intensity in parallel with the heat dissipation, can effectively increase the intensity / thermal resistance ratio, the thermal resistance is low, the market there are three major general COB light source system, but they all have disadvantages as follows:

The COB light source 1 disadvantages, with PCB plate and aluminum plate pressing process: the best pressing aluminum plate thermal conductivity is only about 2 /m-K, and the pure aluminum thermal conductivity is 237 /m-K, a difference of more than and 100 times, the thermal resistance of such a large, will make the heat consumption ratio increases, resulting in serious decay. Due to the use of adhesives in the high temperature and easy to fall off, coupled with large insulation resistance between layers, use it to make power packaging (20W above) damage failure rate is very high.

2, the COB light source composed of multiple SMD small power array: it relies on aluminum substrate and reflow soldering, multilayer thermal resistance is more resistant to high temperature.

3, the integrated light source system: the disadvantages of injection molding plastic injection process of electrode plate embedded in PPA plastic, PPA will turn yellow and powder in high temperature and ultraviolet radiation, easy to harden, crack, broken wire, causing air inlet, the failure rate is very high. As the copper substrate needs silver plating process, it will pollute the environment, high cost, easy oxidation. The structure of the bracket is higher than that of the chip 1.5mm, and the amount of the phosphor and the gel is very large, and the thickness of the colloid can not only affect the light transmission, but also increase the packaging cost.

Two, break through the traditional, Biaoxinchuangyi; out of the ordinary, self-contained

1 innovative ideas:

To improve the performance of temperature, completely solve the shortcomings of traditional light source, improve its function and performance, low thermal resistance, simple structure of Gao Guangxiao, to the extreme, the system cost is reduced greatly, make the packaging factory have benefited and lamps factory.

2 technical measures:

* LED chip and heat conduction substrate are directly fixed, which completely eliminates the thermal barrier.

* the trench technology is adopted to completely eliminate the additional dam enclosing process,

* use bright mirror aluminum, completely exempt from the silver plating process.

Adopting high temperature resistant insulating material, the injection process of the integrated support is completely eliminated.

Adopting the technology of trench dam completely eliminates the aluminum substrate pressing process.

The invention relates to a WFC0B light source which has obvious advantages compared with the existing three systems:

1 metal integrated structure, get rid of the integrated light source injection process, not only improve the temperature characteristics of the light source, but also solve the PPA due to high temperature and ultraviolet radiation will turn yellow, pink, breathable and cause product failure.

2 using high temperature resistant insulating material tightly wrapped electrode plate technology, get rid of the COB light source of aluminum (copper) substrate bonding process dependent, not only improve the temperature characteristics of the light source are completely solved aluminum (copper) substrate, high thermal resistance is not easy to wire and welding, high temperature operation Alice skin shedding defects.

High efficiency: Based on common chip, light efficiency can reach 130-160/LW

Temperature resistant experiment: Small 3 I radiator, 20 light source radiator temperature of 148 degrees, can be continuous for 24 hours of continuous work is not bad, the gel temperature of more than and 200 degrees can ignite cigarettes.

3 high aluminum reflector, get rid of the substrate plating process overcomes high cost, easy to sulfide silver plating process brings disadvantages.

4 using trench technology, not only to reduce the amount of fluorescent glue, but also overcome the COB light source using plastic dam due to the smooth surface caused by the light effect is not high.

5 because of the improvement of the temperature resistance of the light source and the thermal resistance of the package, the utility model not only can reduce the amount of the radiator, but also can increase the working current of the chip, increase the light intensity, and save the manufacturing cost of the lamp.

6 due to the increase of the temperature characteristics of the light source, low light decay, effectively improve the reliability and reduce the light source, prolong the life.

7 because of insulation material and printing ink from an integrated light source PPA and COB light aluminum substrate, can facilitate the relevant certification.

8 no matter from the stent production, light source and other aspects of the production of lamps and lanterns can significantly reduce the cost of a technical benefit.

epilogue

A WFCOB light source to break through the traditional, Biaoxinchuangyi, out of the ordinary, self-contained, the obvious technical advantages make the benefit of multi packaging factory and lamps factory, technology innovation will break the industry pattern, ultimately promote the rapid development of LED industry.