Patent ID: 8878226

Claim:
A light emitting device, comprising: a substrate; and a plurality of light emitting structures on the substrate, wherein each of the light emitting structures comprises: an auxiliary electrode disposed on the substrate, wherein the auxiliary electrode is suitable to be used as a cathode; a first insulating layer disposed on the substrate and covering the auxiliary electrode; a first electrode disposed on the first insulating layer, wherein the first electrode is suitable to be used as an anode; a second insulating layer disposed on the first insulating layer and having a first opening which exposes the first electrode; a first organic light-emitting layer disposed in the first opening to connect the first electrode; a cathode disposed on the first organic light-emitting layer; at least a conductive structure passing through the first insulating layer and the second insulating layer and electrically connecting the cathode to the auxiliary electrode; and a patterned structure layer disposed on the second insulating layer and around the cathode, wherein a thickness of the patterned structure layer is larger than that of the cathode, and wherein the patterned structure is a closed structure to separate the cathodes of two light emitting structures from each other.