| 摘要 |
To provide a substrate for mounting a light-emitting element with a reduced gap provided to achieve insulation between a metal reflection film and an electrical wiring conductor portion formed on a LTCC substrate for mounting a light-emitting element, its production process and a light-emitting device. A substrate for mounting a light-emitting element, which comprises a substrate main body made of a sintered product of a glass ceramic composition containing a glass powder and a ceramic filler, a part thereof constituting a mounting surface to be a mounting portion on which a light-emitting element is to be mounted; electrical wiring conductors to be electrically connected to an electrode of the light-emitting element, arranged at a stepped portion differing in the height from the mounting surface provided on the mounting surface of the substrate main body; a reflection film formed on the mounting surface excluding the stepped portion and the vicinity of its periphery; and an overcoat glass film provided on the mounting surface so as to cover the entire reflection film including its edge and so as to exclude the stepped portion and the vicinity of its periphery. |
