Patent ID: 8828797
Filing Date: 2014-09-09
Classification: H01L

Abstract:
1. A process for fabricating a three-dimensional integrated structure by assembly of at least two parts, each part containing at least one metallic line covered with a covering region having a free side, comprising: forming, in each part, at least one cavity in the covering region opening onto the metallic line; forming one or more reservoirs of conductive material in one or more of the metallic lines; joining of the two covering regions to each other by way of at least a portion of their free side so that said cavities face each other; and forming a metallic assembly of the two lines, comprising performing an electromigration of the metal of at least one of the metallic lines through the cavities, wherein the combined volume of the one or more reservoirs is equal to or greater than a combined volume of the facing cavities.