SUBSTRATE FOR MOUNTING LIGHT-EMITTING ELEMENT, ITS PRODUCTION PROCESS AND LIGHT-EMITTING DEVICE

摘要

To provide a substrate for mounting a light-emitting element with a reduced gap to achieve insulation between a reflection film and electrical wiring conductors 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 having a mounting surface for a light-emitting element; electrical wiring conductors to be connected to an electrode of the light-emitting element, arranged at a stepped portion 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.