LIGHT EMITTING DEVICE, METHOD OF MANUFACTURING THE SAME, LIGHT EMITTING DEVICE PACKAGE AND LIGHTING SYSTEM

摘要

A light emitting device includes an active layer formed between first and second semiconductor layers. The first semiconductor layer includes a first surface facing the active layer, a second surface opposing the first surface, and a side surface that includes a stepped portion. The stepped portion causes the side surface to extend beyond one of the first surface or second surface of the first semiconductor layer. A light emitting device may also be formed with a buffer layer that includes a stepped portion, and a light emitting device package and system may be formed from the light emitting devices.

主权项

1. A light emitting device comprising:
a metal layer; a light emitting structure on the metal layer, including a first semiconductor layer, a second semiconductor layer, an active layer between the first semiconductor layer and the second semiconductor layer; and a first electrode on at least one of the light emitting structure; wherein the light emitting structure includes an inclined lower portion and an upper portion on the lower portion; wherein the light emitting structure has a stepped structure between the lower portion and the upper portion; wherein the lower portion has an inverted trapezoidal shape which has a top surface and a bottom surface; and wherein a width of the top surface is wider than that of the bottom surface.