Patent ID: 9536924
Date: 2017-01-03
CPC Classifications: H01L

Claim:
1. A lighting module including a plurality of light emitting diodes, at least one of the light emitting diodes comprising: a transparent substrate having a first surface, a second surface and a side surface connecting the first surface and the second surface; a first conductive type semiconductor layer placed on the first surface of the transparent substrate; a second conductive type semiconductor layer placed on the first conductive type semiconductor layer; an active layer placed between the first conductive type semiconductor layer and the second conductive type semiconductor layer; a first pad electrically connected to the first conductive type semiconductor layer; a second pad electrically connected to the second conductive type semiconductor layer, and a current spreading layer contacting an edge of the first conductive type semiconductor layer and formed on a portion of an area above the second conductive type semiconductor layer; wherein light generated in the active layer is discharged through the transparent substrate via the second surface of the transparent substrate, and the at least one light emitting diode has a beam angle of 140° or more in at least one axial direction thereof, and wherein the at least one light emitting diode further comprises a conformal coating layer covering the second surface of the transparent substrate, and a total thickness of the transparent substrate and the conformal coating ranges from 225 μm to 600 μm.