Light emitting device

A light emitting device comprising:

• a plurality of light emitting cells arranged in column and row directions, each light emitting cell including a semiconductor stack that includes a first semiconductor layer and a second semiconductor layer, the second semiconductor layer being disposed on the upper face of the first semiconductor layer such that a portion of an upper face of the first semiconductor layer is exposed from the second semiconductor layer;
• a first insulation layer continuously disposed on the light emitting cells and having a first hole located on the first semiconductor layer exposed from the second semiconductor layer in each of the light emitting cells, and a second hole located on the second semiconductor layer in each of the light emitting cells;
• a wiring electrode having light reflectivity and disposed to cover the first insulation layer to be in electrical connection with the first semiconductor layer at the first hole in each of the light emitting cells;
• and
• a second electrode disposed in each of the light emitting cells to be in electrical connection with the second semiconductor layer at the second hole;
• wherein the first insulation layer is exposed from the first semiconductor layer between the plurality of light emitting cells;
• and
• wherein the lower face of the first semiconductor layer has a roughened surface.