Mounting substrate and light-emitting device using the same

摘要

To provide a mounting substrate wherein insulation resistance of a metal substrate having an oxide film formed on the surface thereof is ensured, and light reflectance is improved by preventing a light-reflecting material contained in a reflection layer from diffusing into a surface of the metal substrate.;A mounting substrate includes a metal substrate (21), and a surface layer section (22) formed on an upper surface of the metal substrate (21). The surface layer section (22) includes an oxide film layer (23) formed on a surface of the metal substrate (21), a barrier layer (24) formed on the oxide film layer (23), a reflection layer (25) formed on the barrier layer (24) and containing a light-reflecting material, and a protection film layer (26) formed on the reflection layer (25).

主权项

1. A mounting substrate comprising:
a metal substrate formed of an aluminum plate; and a surface layer section formed on an upper surface of the metal substrate, wherein the surface layer section includes:
an oxide film layer comprising an alumite layer, the oxide film layer being formed on the upper surface of the metal substrate;a barrier layer formed on the oxide film layer and containing at least one of titanium, nickel, ruthenium, palladium, tungsten, and platinum;a reflection layer formed on the barrier layer and containing a light-reflecting material formed of silver; andan insulating protection film layer formed on the reflection layer, and wherein the insulating protection film layer is formed of a multilayer film including a light-transmitting resin film, a titanium oxide evaporated film, and a silicon oxide evaporated film.