Patent ID: 8461615

Claim:
A semiconductor light emitting device comprising: a stacked structural body including: a first semiconductor layer of a first conductivity type, the first semiconductor layer having a major face, a first portion provided on the major face and a second portion provided on the major face; a second semiconductor layer of a second conductivity type, the second semiconductor layer provided on the first portion; and a light emitting portion provided between the first portion of the first semiconductor layer and the second semiconductor layer; a first electrode provided on the second portion of the first semiconductor layer; and a second electrode provided on the second semiconductor layer, the first electrode including: a first pad portion; and a first extending portion extending from the first pad portion along a first extending direction; the first extending portion including a first width-increasing portion, a width of the first width-increasing portion along a direction orthogonal to the first extending direction being increased from the first pad portion toward an end of the first extending portion; wherein the second electrode includes: a second pad portion; a second extending portion extending from the second pad portion, at least a part of the second extending portion extending along a second extending direction; and a third extending portion extending from the second pad portion, at least a part of the third extending portion extending along a third extending direction different from the second extending direction; wherein the first conductivity type is n-type, the second conductivity type is p-type, the second extending portion and the third extending portion extend from a position of the second pad portion which is receded from a position which is closest to the first extending portion, the width of the first width-increasing portion along a direction orthogonal to the first extending direction gradually increases from a start position toward an end position, the start position being on a side of the first pad from a center position along the first extending direction in the first extending portion, and the end position being an end of the first extending portion.