Patent ID: 8952389
Filing Date: 2015-02-10
Classification: H01L

Abstract:
1. A light emitting diode comprising: a light transmitting substrate having a top surface, a back surface opposite to the top surface and a side surface between the top surface and the back surface, at least one recess being disposed on the back surface; a semiconductor material layer having a first compound semiconductor layer, an active layer generating a first light and a second compound semiconductor layer disposed on the top surface of the substrate in that order, the semiconductor material layer emitting the first light via the back surface of the substrate; at least one first-type electrode connected to the first compound semiconductor layer and at least one second-type electrode connected to the second compound semiconductor layer, respectively; and a wavelength converting layer disposed on the back surface of the substrate and converting a portion of the first light to a second light having a different wavelength from the first light, wherein the area of the back surface of the substrate adjacent the recess is substantially flat, wherein the wavelength converting layer is disposed on the flat area of the back surface and in the at least one recess.