| 摘要 |
PROBLEM TO BE SOLVED: To provide a light-emitting element mounting substrate which has high heat conductivity and can reduce light transmission at a frame part and has high luminous efficiency; and provide a light-emitting device using the light-emitting element mounting substrate.SOLUTION: In a light-emitting element mounting substrate, a sintered body included in each of a base part 3 and a frame part 5 has a porosity of 5% or less; the base part 3 and the frame part 5 include ceramic particles 7 having average aspect ratios different from each other in which the ceramic particles 7 included in the frame part 5 have a smaller average aspect ratio than that of the ceramic particles 7 included in the base part 3. Because of this, the light-emitting element mounting substrate which has high heat conductivity and low light transmittance at the frame part, and a light-emitting device using the light-emitting element mounting substrate can be obtained. |
