| 摘要 |
A light emitting device (10) comprising a light emitting element (12) mounted on the surface of an aluminum- nitride simultaneous-fired substrate (11), characterized in that the surface, on which the light emitting element (12) is mounted, of the substrate (11) is mirror-polished so as to have a surface roughness of up to 0.3 mumRa, a metal deposition film (14) having a reflectance of at least 90% with respect to a light emitted from the light emitting element (12) is formed on the surface, around the element (12), of the substrate (11), and via holes (15) are formned that penetrate the front and rear surfaces, on which the element (12) is formed, of the substrate (11) so as to alllow conduction to the element (12) from the rear surface. Accordingly, the light emitting device can be reduced in size, is excellent in heat radiation performance, can supply a large current, and can significantly increase luminance with a high light emitting efficiency. |
