A semiconductor light emitting device includes a substrate and a plurality of light emitting cells disposed on the substrate. Each light emitting cell includes first and second conductive semiconductor layers having an active layer formed therebetween, and first and second electrodes formed on the first and second layers. A first insulation layer is formed on portions of the light emitting cell, while a second insulation layer entirely covers at least one light emitting cell. A method of manufacturing the semiconductor light emitting device, and a light emitting module and an illumination apparatus including the semiconductor light emitting device are also provided.