Semiconductor light emitting element

摘要

A semiconductor light emitting element includes a semiconductor laminated body comprising a first conductivity type layer, a light emitting layer and a second conductivity type layer in this order from a lower side, a first electrode formed on the first conductivity type layer, and a second electrode comprising a transparent electrode formed on the second conductivity type layer and an auxiliary electrode formed on the transparent electrode, the transparent electrode comprising an oxide and having sheet resistance smaller than that of the second conductivity type layer and the auxiliary electrode comprising metal and having sheet resistance smaller than that of the transparent electrode, wherein the auxiliary electrode has, in a planar view, a linear surrounding portion surrounding the first electrode and a pad portion formed outside the surrounding portion for connecting a wire and the surrounding portion has a plurality of shortest-distance portions, in which a plan view distance from the first electrode is minimum, in a circumferential direction.

主权项

1. A semiconductor light emitting element, comprising:
a semiconductor laminated body comprising a first conductivity type layer, a light emitting layer, and a second conductivity type layer, formed in this order; a first electrode formed on the first conductivity type layer; and a second electrode comprising a transparent electrode formed on the second conductivity type layer and an auxiliary electrode formed on the transparent electrode, the transparent electrode comprising an oxide and having a sheet resistance less than a sheet resistance of the second conductivity type layer, and the auxiliary electrode comprising a metal and having a sheet resistance less than said sheet resistance of the transparent electrode, wherein the auxiliary electrode comprises, in a planar view:
a linear surrounding portion surrounding an entirety of the first electrode and comprising a circle which is concentric with the first electrode such that a distance between the linear surrounding portion and the first electrode is the same around the entirety of the first electrode, and a portion of the linear surrounding portion comprising an arc-shaped zone which is concave toward the first electrode; anda single pad portion comprising an innermost portion which is formed outside the linear surrounding portion and connected to an outer edge of the arc-shaped zone of the linear surrounding portion for connecting a wire, wherein the single pad portion comprises:
a circular-shaped portion which is formed outside the linear surrounding portion; anda connecting portion which includes the innermost portion, and connects an innermost circumferential portion of the circular-shaped portion to the outer edge of the arc-shaped zone of the linear surrounding portion, wherein the pad portion is separated from the first electrode by the arc-shaped zone in a plan view, and wherein an entirety of a surface of the transparent electrode except for the linear surrounding portion and the single pad electrode, comprises a light-emitting surface.