Patent ID: 8378377

Claim:
A light emitting device comprising: a light emitting chip; an external terminal made of a metal material; and a circuit board having the light emitting chip mounted via the external terminal, the light emitting chip including: a semiconductor layer having a first main surface, a second main surface formed on an opposite side of the first main surface, and a light emitting layer; a first electrode provided on the second main surface in a region where the light emitting layer is provided; a second electrode provided on the second main surface; an insulating layer provided on the second main surface side of the semiconductor layer; a first interconnection layer provided on a surface of the insulating layer opposite to a surface facing the semiconductor layer and provided in a first opening formed in the insulating layer to reach the first electrode, the first interconnection layer being connected to the first electrode; a second interconnection layer provided on a surface of the insulating layer opposite to a surface facing the semiconductor layer and provided in a second opening formed to reach the second electrode, the second interconnection layer being connected to the second electrode; a first metal pillar provided on a surface of the first interconnection layer opposite to a surface facing the first electrode; a second metal pillar provided on the surface of the second interconnection layer opposite to the surface facing the second electrode; and a resin layer provided between a side surface of the first metal pillar and a side surface of the second metal pillar, and the circuit board including an interconnection bonded to the first metal pillar and the second metal pillar via the external terminal, and a heat radiation material provided on an opposite side of the interconnection and connected to the interconnection.