Patent ID: 9147812
Filing Date: 2015-09-29
Classification: H01L

Abstract:
1. A method of assembly for a semiconductor light emitting device package, the method comprising: forming a metal bonding layer on a submount, the metal bonding layer having a thickness that is controlled in response to a combined surface roughness of an upper surface of a mounting substrate and a surface of the submount, the submount and the metal bonding layer providing a submount structure; positioning the submount structure on the mounting substrate, wherein a flux material is between the metal bonding layer and the mounting substrate, and no solder paste with suspended metal alloy particles is between the metal bonding layer and the mounting substrate, and the metal bonding layer is a solid material when the submount structure is positioned on the mounting substrate; positioning a semiconductor light emitting device on a top side of the submount opposite the mounting substrate with a flux material therebetween to provide an assembled stack; and reflowing the assembled stack to attach the metal bonding layer of the submount structure to the mounting substrate and to attach the light emitting device to the submount.