LIGHT EMITTING DEVICE

摘要

PURPOSE: A light emitting device is provided to increase the external quantum efficiency by reducing total reflection within a light emitting apparatus. CONSTITUTION: A semiconductor layer(120) is formed on upper part a base substrate(110). An active region(130) is formed on upper part the semiconductor layer. A second semiconductor layer(140) is formed on upper part of the active layer. The second semiconductor layer forms a first protrusion pattern on the top. The first protrusion pattern is of a pyramidal shape.