Patent ID: 8853077

Claim:
A method for fabricating a through silicon via packaging structure, comprising: providing a first type substrate, epitaxially growing a second type substrate directly from a surface of the first type substrate, different from the first type substrate, wherein the epitaxially-grown second type substrate has a first surface and a second surface on the first type substrate; forming a semiconductor device on the first surface of the epitaxially-grown second type substrate; forming an interlayer dielectric layer on the first surface of the epitaxially-grown second type substrate and a surface of the semiconductor device; forming a metal interconnection structure in the interlayer dielectric layer electrically connecting with the semiconductor device; forming a through silicon via structure perforating an entire thickness of the epitaxially-grown second type substrate and perforating an entire thickness of the interlayer dielectric layer, the through silicon via structure electrically connecting with the metal interconnection structure by a metal layer on a top surface of the dielectric layer; and after forming the through silicon via structure, removing the first type substrate to expose the second surface of the epitaxially-grown second type substrate and a bottom surface of the through silicon via structure.