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:
Aug. 27, 2024
Filed:
Sep. 16, 2022
Applicant:
Shenzhen Newsonic Technologies Co., Ltd., Shenzhen, CN;
Inventors:
Guojun Weng, Shenzhen, CN;
Gongbin Tang, Shenzhen, CN;
Assignee:
Shenzhen Newsonic Technologies Co., Ltd., Shenzhen, CN;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/64 (2006.01); H03H 3/08 (2006.01); H03H 9/02 (2006.01); H03H 9/05 (2006.01); H03H 9/10 (2006.01);
U.S. Cl.
CPC ...
H03H 9/6423 (2013.01); H03H 3/08 (2013.01); H03H 9/02897 (2013.01); H03H 9/059 (2013.01); H03H 9/1092 (2013.01);
Abstract
A surface acoustic wave (SAW) filter includes a bottom substrate, a piezoelectric layer disposed above the bottom substrate, the piezoelectric layer having a bottom surface facing the bottom substrate and a top surface opposite to the bottom surface, a lower cavity disposed below the piezoelectric layer, an interdigital transducer (IDT) disposed on the top surface of the piezoelectric layer, and a back electrode disposed on the bottom surface of the piezoelectric layer, and exposed in the lower cavity.