COB is the abbreviation of Chip On Board, is a packaging method to package multiple LED chips directly on the metal-based printed circuit board.
In other words, the structure of COB package is that the original, bare chips or electronic components are directly soldered to the circuit board and covered with epoxy resin.
The difference between COB package and SMD package is that COB鈥檚 lamp chip does not need bracket connection, directly combined with the PCB board, there is no reflow link, reducing costs.
