Patent ID: 8350382
Filing Date: 2013-01-08
Classification: H01L

Abstract:
1. An electronic device comprising: a substrate; at least one chip including a first side and a backside opposite of the first side, the first side electrically coupled to the substrate; and means for electrically coupling at least one electronic component to the backside of the chip such that the electronic component is in electrical communication with the substrate, wherein the means for electrically coupling at least one electronic component to the backside of the chip comprises a metallization layer deposited on the chip between the backside of the chip and the electronic component, the metallization layer comprising a multi-layer structure including a diffusion barrier layer, and wherein each layer in the multi-layer structure is a metal layer, the multi-layer structure includes at least four metal layers, at least three of the metal layers have a same surface area parallel to the backside of the at least one chip, and the diffusion barrier layer comprises a topmost metal layer of the multi-layer structure opposite a bottommost metal layer contacting the chip.