Patent ID: 8455984
Filing Date: 2013-06-04
Classification: H01L

Abstract:
1. An integrated circuit structure, comprising: a semiconductor substrate having a first side and a second side opposite the first side; a conductive via extending from the first side of the semiconductor substrate, wherein the bottom of the conductive via protrude from the second side of the semiconductor substrate; a diffusion barrier layer positioned along a sidewall and a bottom surface of the conductive via; a first dielectric layer positioned along the diffusion barrier layer; a photosensitive dielectric layer formed on the second side of the semiconductor substrate, wherein the photosensitive dielectric layer has an opening; and a solder bump positioned in the opening and electrically connected to the conductive via, wherein the diffusion barrier layer is disposed between the conductive via and the solder bump, and wherein the conductive via, the diffusion barrier layer, and the first dielectric layer are positioned in this order.