Patent ID: 6781147
Filing Date: 2004-08-24
Classification: H01L

Abstract:
A lateral current blocking light emitting diode (LED), comprising:a substrate; a semiconductor layer of a first polarity, wherein the semiconductor layer of the first polarity is located on the substrate and comprises first and second portions; a semiconductor epitaxial structure, wherein the semiconductor epitaxial structure is located entirely on the first portion of the semiconductor layer of the first polarity, and the semiconductor epitaxial structure comprises an active layer, wherein the semiconductor epitaxial structure comprises at least one trench, and a depth of the at least one trench reaches to at least the active layer; a metal electrode pad of the first polarity, wherein the metal electrode pad of the first polarity is located on the second portion of the semiconductor layer of the first polarity; and a metal electrode pad of a second polarity, wherein the second polarity is different from the first polarity, the metal electrode pad of the second polarity is located on the semiconductor epitaxial structure, the metal electrode pad of the first polarity and the metal electrode pad of the second polarity are located at two opposite sides of the at least one trench separated by the at least one trench, and the at least one trench provides a blocking of lateral current flowing between the metal electrode pad of the first polarity and the metal electrode pad of the second polarity.