High Stability COB Chip Supplier shares with you.
LED SMD(Surface Mounted Devices) means Surface Mounted light-emitting diode, which has a large luminous Angle and can reach 120-160 degrees. Compared with the early plug-in packaging, it has the advantages of high efficiency, good precision, low virtual welding rate, lightweight and small size.
COB(chip-on-board) means that the chip is directly bound and encapsulated on the whole substrate, that is, N chips are inherited and integrated on the substrate for encapsulation. It is mainly used to solve the problem of manufacturing high-power LED lamps with the low-power chips, which can disperse the heat dissipation of chip, improve the light efficiency, and improve the glare effect of LED lamp. COB has a high flux density, and the glare is less gentle. What is emitted is an evenly distributed light surface. At present, it is widely used in bulb, spotlights, downlights, fluorescent lamps, street lamps, mining lamps, and other lamps.
As is known to all, LED has been introduced into the field of lighting since its initial form was lamp beads directly welded on the board. The disadvantage of this method is that it has various processes, LED packaging and SMT, high cost, and heat transfer problems. Therefore, COB was introduced into the field of LED at this time.
Traditional LED: mainly due to the lack of ready-made suitable core light source components adopted by the practice, not only time-consuming, and high cost.
COB packaging: multiple chips can be directly encapsulated in the metal-based printed circuit board MCPCB, directly dissipating heat through the substrate, saving the cost of LED primary packaging, optical engine module production, and secondary light distribution. In terms of performance, through reasonable design and micro-lens modeling, the COB light source module can effectively avoid the disadvantages such as spotlight and glare that exist in the combination of discrete light source devices. It is also possible to increase the color rendering of the light source by adding appropriate red chip combinations without significantly reducing the efficiency and life of the light source.
The system thermal resistance of the COB package is much lower than that of the traditional SMD package, which greatly improves the life of LED.
Our company also provide Full Spectrum COB LED Chip, welcome to contact us.