COB: In the LED chip packaging industry, COB English is: Chip On Board, which is one of the LED packaging methods. It is also one of the mainstream methods of indoor and outdoor LED lighting. The COB package directly encapsulates single or multiple LED dies. PCB (Printed Circuit Board) There are many kinds of boards on the printed circuit board. There are mirror aluminum substrates, ceramic substrates, ordinary aluminum substrates, red copper substrates, bronze substrates, special boards, etc. The COB is different from the general one. SMD (Surface Mounted Device) is printed on the substrate through the bracket. Its characteristics are: good heat conduction, long life, uniform spot, simple assembly, safety and environmental protection. It is currently the most promising LED packaging method;
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