Patent ID: 9324692
Filing Date: 2016-04-26
CPC Classification: F21K,H01L

Claim Text:
1. An illumination structure having a light exit surface, the structure comprising: a substrate; a transparent first conductor layer overlying the substrate; an array of vertical light emitting diodes (VLEDs), the VLEDs having a bottom electrode electrically contacting the first conductor layer, the VLEDs having a first surface covered with a reflective material such that a majority of all light emitted by the VLEDs is emitted through a second surface, opposite the first surface, wherein the first surface faces the light exit surface of the illumination structure; a transparent second conductor layer overlying the VLEDs, the VLEDs having a top electrode electrically contacting the second conductor layer; the VLEDs being illuminated by a voltage differential between the first conductor layer and the second conductor layer such that light passes through the first conductor layer and the second conductor layer; a wavelength-conversion layer having a third surface facing the second surface of the VLEDs, the wavelength-conversion layer having a fourth surface opposite the third surface; and a reflector layer opposing the fourth surface of the wavelength-conversion layer, such that the wavelength-conversion layer is between the array of VLEDs and the reflector layer, wherein at least some light emitted from the second surface of the VLEDs and some of the light emitted from the wavelength-conversion layer is reflected by the reflector layer to reenter the wavelength-conversion layer and ultimately exit through the light exit surface.