Patent ID: 7955974
Filing Date: 2011-06-07
Classification: H01L

Abstract:
1. A method of forming a through-electrode for electrically connecting an electrode of a semiconductor element on a front surface of a substrate to an electrode pad on a rear surface of the substrate, the method comprising: forming a through hole in the substrate above the electrode pad; forming by inkjet deposition a layer of an insulating resin paste, around an inner circumference of the through hole leaving a space in a central portion of the through hole; filling by inkjet deposition the space with a layer of one or a plurality of conductive resin pastes; and forming laminated layers by successively repeating the step of forming the layer of insulating resin paste and the step of filling the space with the layer of the one or the plurality of conductive resin pastes until the insulating resin paste and the one or a plurality of conductive resin pastes filled into the through hole reach the front surface of the substrate, wherein after forming insulating resin and conductive resin, an interface between the insulating resin and the conductive resin includes concavo-convex indentations and projections.