Patent ID: 9190572
Filing Date: 2015-11-17
Classification: C23C,H01L

Abstract:
1. A light emitting diode comprising: a substrate; a light-emitting epitaxial layer from bottom to up including semiconductor material layers of a first confinement layer, a light-emitting layer, and a second confinement layer over the substrate; a current blocking layer over a portion of the light-emitting epitaxial layer; a transparent conducting structure over the current blocking layer that extends to the light-emitting epitaxial layer surface and includes a light-emitting region and a non-light-emitting region, in which, the non-light-emitting region corresponds to the current blocking layer with a thickness larger than that of the light-emitting region, thereby ensuring current spreading performance and reducing working voltage and light absorption; and a P electrode over the non-light-emitting region of the transparent conducting structure, wherein the transparent conducting structure comprises: a first transparent conducting layer, with a pattern corresponding to that of the current blocking layer, formed over the current blocking layer; and a second transparent conducting layer that clads over the first transparent conducting layer and the current blocking layer and extends to the light-emitting epitaxial layer surface, in which, a lower surface area of the second transparent conducting layer is larger than an upper surface area of the current blocking layer.