Tag - cob led bulb

What’s COB LED?

What’s COB LED COB LED means chip on board LED, it’s one of bare chip technologies, which interconnect bare chip to substrate by conductive or non-conductive adhesive, and then wire bonding to achieve its electrical connection. COB package is attach number of chips directly to the substrate, then packaged together by silica gel, epoxy resin or other materials, the yellow part is phosphor.   Produce process: The first step of COB package is to cover wafer placement point on the substrate surface [...]