LIGHT EMITTING DIODE HAVING IMPROVED OPTICAL EXTRACTION EFFICIENCY CAPABLE OF REDUCING LIGHT LOSS BY AN ELECTRODE PAD

摘要

PURPOSE: A light emitting diode having improved optical extraction efficiency is provided to prevent a current to be excessively focused on the crystal defect of light emission regions by partitioning a light-emitting structure into a plurality of light emitting regions.;CONSTITUTION: A light-emitting structure including light emitting regions(LE1,LE2) is formed in the top of a substrate. The light-emitting structure comprises a first electrical conductive semiconductor layer, an active layer, and a second electrical conductive semiconductor layer. A first electrode pad(35) is electrically connected to the first electrical conductive semiconductor layer. A second electrode pad(33) is located on the upper side of the substrate. An insulation reflecting layer(31) separates the second electrode pad from the light-emitting structure. A pattern(LEE) of optical extraction elements is located on the upper side of the second electrical conductive semiconductor layer.;COPYRIGHT KIPO 2012