Light-emitting device

A light-emitting device, comprising:

• a substrate;
• a plurality of light-emitting cells disposed on the substrate so as to be spaced apart from each other;
• and
• a connection line configured to electrically interconnect neighboring light-emitting cells,
• wherein each of the light-emitting cells comprises:
• a light-emitting structure comprising an n-type semiconductor layer, an active layer, and a p-type semiconductor layer disposed on the substrate;
• and
• n-type and p-type electrodes configured to be electrically connected to the n-type and p-type semiconductor layers respectively,
• wherein the light-emitting cells comprises:
• a negative power cell configured to receive a negative voltage via an n-type bonding pad connected to the n-type electrode;
• and
• a positive power cell configured to receive a positive voltage via a p-type bonding pad connected to the p-type electrode,
• wherein each of the light-emitting cells excluding the negative power cell further comprises a contact hole passing through the p-type semiconductor layer and the active layer to expose the n-type semiconductor layer,
• wherein the connection line is configured to be electrically connected to the n-type semiconductor layer through a respective one of the contact holes, and
• wherein the contact hole is disposed so as not to overlap the p-type bonding pad in a thickness direction of the light-emitting structure.