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. 26, 2021
Filed:
Jun. 26, 2017
Applicant:
Soitec, Bernin, FR;
Inventors:
Gweltaz Gaudin, Grenoble, FR;
Isabelle Huyet, Crolles, FR;
Assignee:
Soitec, Bernin, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/02 (2006.01); H01L 41/08 (2006.01);
U.S. Cl.
CPC ...
H03H 9/02834 (2013.01); H01L 41/0815 (2013.01); H03H 9/02559 (2013.01); H03H 9/02566 (2013.01); H03H 9/02574 (2013.01);
Abstract
A hybrid structure for a surface acoustic wave device comprises a useful layer of piezoelectric material having a free first surface and a second surface disposed on a support substrate that has a lower coefficient of thermal expansion than that of the useful layer. The hybrid structure further comprises a trapping layer disposed between the useful layer and the support substrate, and at least one functional interface of predetermined roughness between the useful layer and the trapping layer.