Patent ID: 9041045
Filing Date: 2015-05-26
Classification: H01L

Abstract:
1. A transparent LED wafer module comprising: a lower transparent substrate having translucency; a lower transparent electrode coated on the lower transparent substrate, to which power is applied; an n-electrode formed after a metal is deposited and etched, in which a lower portion of the n-electrode is received in the lower transparent electrode by a predetermined depth; an epitaxial layer comprising a plurality of layers, which is formed by etching after being deposited on the n-electrode, and emits light by application of power; a p-electrode formed by etching after a metal is deposited on a p-ohmic contact layer as an uppermost layer from among the plurality of layers constituting the epitaxial layer; a transparent nonconductor filled between the lower transparent electrode and an upper transparent electrode connected to the n-electrode and the p-electrode, respectively, which blocks positive and negative polarities occurring by power application; wherein the upper transparent electrode is layered on the transparent nonconductor and the p-electrode; and an upper transparent substrate having translucency, which is layered on the upper transparent electrode, wherein the epitaxial layer comprises: an AlGaInN <aluminum-gallium-indium-nitride> buffer formed by etching after being deposited on the lower transparent electrode, which is grown on one side of the n-electrode at the same height as that of an upper portion of the n-electrode; an n-AlGaInN layer layered on the n-electrode and the AlGaInN buffer; an AlGaInN active layer layered on the n-AlGaInN layer, which comprises a plurality of quantum wells, and emits light by power application; a p-AlGaInN clad layer layered on the AlGaInN active layer; and a p-ohmic contact layer layered on the p-AlGaInN clad layer.