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:
Jul. 05, 2005
Filed:
Jul. 09, 2003
Bernard Aspar, Rives, FR;
Séverine Bressot, La Riviere, FR;
Olivier Rayssac, Grenoble, FR;
S.O.I. Tec Silicon on Insulator Technologies S.A., Bernin, FR;
Commissariat à l'Energie Atomique (CEA), Paris, FR;
Abstract
Methods for transferring a layer of material from a source substrate having a zone of weakness onto a support substrate to fabricate a composite substrate are described. An implementation includes forming at least one recess in at least one of the source and support substrates, depositing material onto at least one of a front face of the source substrate and a front face of the support substrate, pressing the front faces of the source and support substrates together to bond the substrates, and detaching a transfer layer from the source substrate along the zone of weakness. When the front faces are pressed together, any excess material is received by the recess. The recess may advantageously include an opening in the front face of at least one of the source substrate and the support substrate.