Patent ID: 8581291

Claim:
An optical semiconductor device, comprising: a light-emitting layer having a first main surface, a second main surface opposed to the first main surface, the light-emitting layer including a first semiconductor layer of a first conductivity type, a second semiconductor layer of a second conductivity type, and an active layer provided between the first and second semiconductor layers; a first electrode provided on the second main surface of the light-emitting layer and connected to the first semiconductor layer; a second electrode provided on the second main surface of the light-emitting layer and connected to the second semiconductor layer; a fluorescent layer containing phosphor particles and provided on the first main surface, the fluorescent layer extending off the light-emitting layer in planar view; a first metal post provided on the first electrode; a second metal post provided on the second electrode; and a sealing layer provided on the second main surface so as to seal in the first and second metal posts with one ends of the respective first and second metal posts exposed, the sealing layer covering the side faces of the light-emitting layer, and the sealing layer extending to edges of the fluorescent layer.