Patent ID: 7863181
Filing Date: 2011-01-04
Classification: H01L

Abstract:
1. A method for manufacturing a device having a conductive via, the method comprising the following steps of: providing a substrate having at least one pad; forming a dielectric material layer on the substrate, wherein the dielectric material layer includes a through hole exposing the pad, and the through hole has a predetermined aspect ratio; forming a seed metallic layer on the dielectric material layer and in the through hole, wherein the seed metallic layer is electrically connected to the pad; forming a metallic layer on the seed metallic layer, wherein the metallic layer is filled in the through hole; etching and removing the metallic layer located over the seed metallic layer and outside the through hole by a spin etching process, whereby the metallic layer located in the through hole is formed to a lower portion; forming an upper portion on the lower portion, and forming a metallic trace on the seed metallic layer located on the dielectric material layer, wherein the upper and lower portions is formed to a conductive via having the predetermined aspect ratio, and the conductive via and the metallic trace expose a part of the seed metallic layer; and etching and removing the exposed part of the seed metallic layer.