Patent ID: 6518598
Filing Date: 2003-02-11
Classification: H01L

Abstract:
A structure of III-nitride LED having spiral electrodes, comprising:a substrate; an epitaxial structure located on the substrate, the epitaxial structure comprising: a first stacked sub-structure located on the substrate; and a second stacked sub-structure with a spiral-shaped pattern formed on the first stacked structure, wherein the second stacked sub-structure has a trench, and the trench exposes a side of the second stacked sub-structure and a portion of a surface of the first stacked sub-structure; a first metal electrode having a first electrical property, wherein the first metal electrode having the first electrical property is in the trench and located on the first stacked sub-structure along the second stacked sub-structure in the spiral-shaped pattern, and the first metal electrode having the first electrical property is connected with a first metal electrode pad having the first electrical property; and an ohmic electrode having a second electrical property, wherein the ohmic electrode having the second electrical property is located on the second stacked substructure, and the second electrical property is opposite to the first electrical property, the ohmic electrode having the second electrical property comprising: a transparent electrode having the second electrical property, wherein the transparent electrode having the second electrical property is located on the second stacked sub-structure; and a second metal electrode having the second electrical property, wherein the second metal electrode having the second electrical property is located on the transparent electrode having the second electrical property, and the second metal electrode having the second electrical property is connected with a second metal electrode pad having the second electrical property.