| 摘要 |
Provided is a light-emitting device which is provided with a conductor layer for light reflection having a high light reflectance and being less susceptible to deterioration of the reflectance due to corrosion, has an improved light extraction efficiency, and is excellent in the heat dissipating properties. A light-emitting device comprising a ceramic substrate having a lower ceramic layer, a conductor layer for light reflection formed on a desired area of the lower ceramic layer surface and an upper ceramic layer formed so as to cover at least a part of the conductor layer for light reflection, and a light-emitting element disposed on the upper side of the upper ceramic layer of the ceramic substrate, characterized in that the upper ceramic layer has a thickness of from 5 to 100 µm. The light-emitting device wherein the upper ceramic layer is composed of a glass-ceramics comprising, as represented by mass%, from 40 to 60% of a glass component and from 40 to 60% of a ceramic filler component. |
