Patent ID: 8546828
Filing Date: 2013-10-01
Classification: H01L

Abstract:
1. A semiconductor light emitting device comprising: a first ceramic layer; a second ceramic layer which is stacked on said first ceramic layer and has an element mounting area; a reflective layer which is formed on a surface of said second ceramic layer such that said reflective layer covers at least said element mounting area; a protective layer which covers said reflective layer; a semiconductor light emitting element which is mounted on said protective layer and positioned above said element mounting area; at least one heat dissipation via which passes through only said first ceramic layer; and an internal wiring line formed in the first ceramic layer, said internal wiring line connecting said semiconductor light emitting element to an external connection terminal, wherein said first ceramic layer has a region that overlaps with an entirety of said element mounting area in a direction in which said first and second ceramic layers are stacked, and wherein said region of said first ceramic layer is devoid of any heat dissipation via; wherein no heat dissipation via passes through any portion of said second ceramic layer.