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:
Nov. 12, 2024
Filed:
Feb. 26, 2020
Soitec, Bernin, FR;
Didier Landru, Le Champ-près-Froges, FR;
Oleg Kononchuk, Theys, FR;
Nadia Ben Mohamed, Echirolles, FR;
Soitec, Bernin, FR;
Abstract
A method for transferring a useful layer from a donor substrate to a carrier substrate comprises: a) providing the donor substrate, the donor substrate including a buried weakened plane; b) providing the carrier substrate; c) joining the donor substrate to the carrier substrate to form a bonded structure; and d) annealing the bonded structure in order to increase the level of weakening of the buried weakened plane. A predetermined stress is applied to the buried weakened plane during the annealing for a period of time, the predetermined stress being selected so as to initiate the splitting wave once a given level of weakening has been reached. At the end of the period of time, the given level of weakening having been reached, the predetermined stress causes initiation and self-sustained propagation of the splitting wave along the buried weakened plane, resulting in the useful layer being transferred to the carrier substrate.