The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 2012
Filed:
Sep. 22, 2009
Laurent Clavelier, Grenoble, FR;
Chrystel Deguet, Saint Ismier, FR;
Patrick Leduc, Grenoble, FR;
Hubert Moriceau, Saint-Egreve, FR;
Laurent Clavelier, Grenoble, FR;
Chrystel Deguet, Saint Ismier, FR;
Patrick Leduc, Grenoble, FR;
Hubert Moriceau, Saint-Egreve, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
A method for making a stack of at least two stages of circuits, each stage including a substrate and at least one component and metallic connections formed in or on this substrate, the assembly of a stage to be transferred onto a previous stage including: a) ionic implantation in the substrate of the stage to be transferred through at least part of the components, so as to form a weakened zone, b) formation of metallic connections of the components, c) transfer and assembly of some of this substrate onto the previous stage, and d) a step to thin the transferred part of the substrate by fracture along the weakened zone.