The LED display adopts the difference analysis of C0B package and SMD package

Time:2018-10-13 Views:252

C0B packaging is a new packaging technology in the LED display industry.It is understood that some LED display manufacturers have been involved in COB packaging, and a small number of production.Compared with traditional packaging technology, COB has the following characteristics.

1. High packaging efficiency and cost saving: COB packaging process is not different from SMD production process, but COB encapsulation on point glue, separation, spectrophotometry and packaging is more efficient, which can save 5% of any and material costs compared with traditional SMD.

2. Advantages of low thermal resistance: the thermal resistance structure of traditional SMD packaging system is: chip - solid gel - solder - solder paste - copper foil - insulation layer - aluminum.The thermal resistance of COB package is: chip - solid - gel - aluminum.The thermal resistance of COB packaging system is much lower than that of traditional SMD packaging system. Therefore, the service life of LED lamps packaged by COB is greatly improved.

3. Advantages of light quality: the traditional SMD package attaches several discrete devices to the PCB board in the form of patch to form the light source assembly for LED application. This method has problems of point light, glare and shadow.The COB package is an integrated package, which is a surface light source, with large visual Angle and easy adjustment, reducing the loss of light refraction.

The traditional SMD packaging method is to put several different devices on the PCB board, and compose the LED light source module.This packaging process makes the source of light common problems of electric light, shadow and glare.COB light source does not have the above problems. It belongs to surface light source, with large visual Angle and easy to adjust Angle, which reduces the loss of light caused by refraction.

Advantages of application: COB light source is very convenient to be applied, and it can be directly applied to lamps without other processes.However, the traditional SMD package light source still needs to be attached first, and then fixed on the PCB board by reflow welding.It‘s not as convenient as COB.

The above is a comparative analysis of the advantages of COB packaging technology and traditional SMD technology. In the foreseeable future, the LED display screen adopting COB packaging will have a good market performance. Let‘s look forward to it together.