Light emitting device

A light emitting device comprising:

• a substrate;
• a first semiconductor layer disposed on the substrate;
• a mesa disposed on the first semiconductor layer, the mesa including a second semiconductor layer and an active layer disposed between the first semiconductor layer and the second semiconductor layer;
• a first contact electrode contacting the first semiconductor layer exposed around the mesa;
• a second contact electrode contacting the second semiconductor layer;
• a passivation layer covering the first contact electrode, the mesa, and the second contact electrode, the passivation layer having openings disposed on the first contact electrode and the second contact electrode;
• and
• a first bump electrode and a second bump electrode electrically connected to the first contact electrode and the second contact electrode through the openings of the passivation layer, respectively;
• wherein the mesa has a plurality of indentations in plan view,
• wherein the first contact electrode is spaced apart from the mesa by a predetermined distance, surrounds the mesa, and contacts the first semiconductor layer in the plurality of indentations, and
• wherein each of the first bump electrode and the second bump electrode covers one of the openings of the passivation layer and a portion of the passivation layer.