Light emitting device and light emitting device package

A light emitting device comprising:

• a substrate;
• a convex pattern including a collection of a plurality of convex portions discretely arranged on a front surface of the substrate with a first pitch;
• an n type nitride semiconductor layer formed on the front surface of the substrate to cover the convex pattern;
• a light emitting layer formed on the n type semiconductor layer, the substrate being transparent to an emission wavelength of the light emitting layer and positioned to receive an emission wavelength from the light emitting layer;
• a p type nitride semiconductor layer formed on the light emitting layer;
• a recess extending through the p type nitride semiconductor layer, the light emitting layer and at least a portion of the n type nitride semiconductor layer, the recess exposing an exposed portion of the n type nitride semiconductor layer;
• a p side electrode formed on the p type nitride semiconductor layer, the p side electrode including:
• a first p side electrode portion;
• and
• a second p side electrode portion extending from the first p side electrode portion along a longitudinal direction of the substrate;
• and
• an n side electrode formed on the exposed portion of the n type nitride semiconductor layer, the n side electrode including:
• a first n side electrode portion located opposite the first p side electrode portion in a longitudinal direction of the substrate;
• and
• a second n side electrode portion extending from the first n side electrode portion along a longitudinal direction of the substrate and parallel to the second p side electrode portion.