A light emitting diode (LED) includes a substrate, a first semiconductor layer disposed on the substrate, an active layer disposed on the first semiconductor layer, a second semiconductor layer disposed on the active layer, a first conductive layer disposed on a portion of the second semiconductor layer, a second conductive layer disposed on the second semiconductor layer, and an insulation layer including a first insulating layer and a second insulating layer disposed on the first insulating layer, and overlapping the first semiconductor layer, the second semiconductor layer, and the second conductive layer, in which the insulation layer has a first region having different thicknesses and a second region having a substantially constant thickness.