Patent ID: 7989237
Filing Date: 2011-08-02
Classification: H01L

Abstract:
1. A fabrication method of a package structure for solid-state lighting devices, comprising the steps of: providing a silicon substrate; forming a reflective cavity on a first surface of the silicon substrate by wet etching; forming at least two electrode access holes on a second surface of the silicon substrate by wet etching, wherein the electrode access holes go through the silicon substrate to reach the reflective cavity and the second surface is opposite to the first surface; enclosing a first insulating layer on the silicon substrate and covering the first insulating layer on inner surfaces of the electrode access holes; overlaying a reflective layer on the reflective cavity; overlaying a second insulating layer on the reflective layer and the first insulating layer; forming a first conductive layer on the electrode access holes, wherein the first conductive layer serves as two electrode pads and is electrically isolated from the reflective layer; and forming a second conductive layer beneath the second surface and inside the electrode access holes, wherein the material of the reflective layer is different from the materials of the first conductive layer and the second conductive layer.