Patent ID: 8232571

Claim:
A light emitting device comprising a plurality of light emitting cells, comprising: a substrate; a plurality of light emitting cells disposed on the substrate to be spaced apart from one another, each of the light emitting cells comprising a first conductive-type upper semiconductor layer, an active layer, and a second conductive-type lower semiconductor layer; a plurality of electrodes disposed on the substrate and between the substrate and each light emitting cell to be spaced apart from one another, the respective electrodes being electrically connected to the corresponding second conductive-type lower semiconductor layers, each of the electrodes having an extension extending toward an adjacent one of the light emitting cells; an etching prevention layer disposed in regions between adjacent light emitting cells and between adjacent electrodes, the etching prevention layer comprising openings that expose the extensions of the electrodes; a side insulating layer covering sides of the light emitting cells; and wires electrically connecting the light emitting cells, the wires being spaced apart from the sides of the light emitting cells by the side insulating layer, each of the wires having one end electrically connected to the upper semiconductor layer of one of the light emitting cells and the other end electrically connected to the electrode electrically connected to the lower semiconductor layer of another adjacent one of the light emitting cells through the opening of the etching prevention layer.