Patent ID: 8319233
Filing Date: 2012-11-27
Classification: H01L

Abstract:
1. A light emitting device, comprising: a light emitting structure arranged on the substrate, the light emitting structure including a first semiconductor layer, a second semiconductor layer and an active layer arranged between the first semiconductor layer and the second semiconductor layer; a first electrode electrically connected to the first semiconductor layer; and a second electrode electrically connected to the second semiconductor layer, wherein the light emitting structure has a top surface including a first side and a second side which face each other, and a third side and a fourth side which face each other, wherein the first electrode includes: a first electrode pad adjacent to the edge of the second side and the third side in the exposed part of the first semiconductor layer; and a first electrode arm connected to the first electrode pad, the first electrode arm extending in a first direction, the second electrode includes: a second electrode pad adjacent to the fourth side on the second semiconductor layer; and a second electrode arm connected to the second electrode pad, the second electrode arm extending in an opposite direction to the first direction and the second electrode arm formed adjacent to the center of the second semiconductor layer, the distance from the first electrode arm to the second electrode arm in the second direction is 25% to 75% of the width of the second semiconductor layer in the second direction.