... Advantages? 1.COB, (Chips on Board) , multi LED chips are packaged together as one lighting module. When it light up, it ... looks like a lighting panel2. COB LED is multi chips packaged, it can 10 times more increase lighting area, so it ... lamp. 3. COB, (Chips on Board) , multi LED chips are packaged together as one lighting module. COB LEDs have great advantage ...