Light emitting device

A light emitting device comprising:

• a first light emitting part including a first-type semiconductor layer, a first active layer, a second-type semiconductor layer, and a first ohmic layer;
• a second light emitting part disposed on the first light emitting part, and including a first-type semiconductor layer, a second active layer, a second-type semiconductor layer, and a second ohmic layer;
• a third light emitting part disposed on the second light emitting part, and including a first-type semiconductor layer, a third active layer, a second-type semiconductor layer, a first metal pattern having a first surface electrically contacting the second-type semiconductor layer of the third light emitting part and a second metal pattern having a first surface electrically contacting the first-type semiconductor layer of the third light emitting part;
• a first pad electrically coupled with the first ohmic layer;
• a second pad electrically coupled with the second ohmic layer;
• a third pad electrically coupled with the first metal pattern;
• a common pad electrically coupled with the first-type semiconductor layer of the first and second light emitting parts and the second metal pattern;
• and
• a first via structure electrically coupling the second metal pattern and the common pad between the second metal pattern and the common pad,
• wherein the first surface of the second metal pattern has a first portion contacting the first via structure and a second portion contacting the first-type semiconductor layer of the third light emitting part.