Patent ID: 8399965
Filing Date: 2013-03-19
Classification: H01L

Abstract:
1. A layer structure with an electromagnetic interference (EMI) shielding effect, applicable in a three-dimensional (3D) integrated circuit, the layer structure comprising: a body having an upper surface and a lower surface; a first through silicon via formed in the body and extended through the body in a direction vertical to the upper and lower surfaces of the body; a second through silicon via formed in the body, wherein the second through silicon via is parallel to the first through silicon via and is extended through the body; and a plurality of EMI-shielding through silicon vias, each of which is extended through the body and has an axis forming an acute angle with the upper and lower surfaces of the body, wherein at least a path passing between the first and second through silicon vias is formed by the plurality of EMI-shielding through silicon vias, and the EMI-shielding through silicon vias are electrically insulated from the first and second through silicon vias.