Method for manufacturing vertical type light emitting diode, vertical type light emitting diode, method for manufacturing ultraviolet ray light emitting diode, and ultraviolet ray light emitting diode

摘要

A vertical type light emitting diode includes a nitride semiconductor having a p-n conjunction structure with a transparent material layer formed on a p type clad layer, the transparent material layer having a refractive index different from that of the p type clad layer and having a pattern structure of mesh, punched plate, or one-dimensional grid form, etc. A reflective metal electrode layer is formed on the transparent material layer as a p-electrode. A stereoscopic pattern is formed in the transparent material layer and the p-electrode deposited, and thereby forming the pattern in the p-electrode. Depositing the p-electrode on only 10 to 70% of the upper portion of the p type clad layer in an ultraviolet ray light emitting diode such that an area where the p type clad layer is exposed is wide increases the transmittance of ultraviolet rays through an area where the p-electrode is not deposited.