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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.:

US 10397708 B1

PDFFull Text
Date of Patent:
Aug. 27, 2019

Filed:

Mar. 01, 2018

Piezoelectric element, piezoelectric microphone, piezoelectric resonator and method for manufacturing piezoelectric element

Applicant:

Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto-fu, JP;

Inventors:

Keiichi Umeda, Nagaokakyo, JP;

Takaaki Mizuno, Nagaokakyo, JP;

Assignee:

MURATA MANUFACTURING CO., LTD., Nagaokakyo-Shi, Kyoto-Fu, JP;

Attorney:

Arent Fox LLP

Primary Examiner:

J San Martin

Int. Cl.
CPC ...
H01L 41/113 (2006.01); H04R 17/02 (2006.01); H01L 41/187 (2006.01); H01L 41/316 (2013.01); H04R 17/10 (2006.01); H03H 3/02 (2006.01); H03H 9/02 (2006.01); H03H 9/17 (2006.01); H04R 31/00 (2006.01);
U.S. Cl.
CPC ...
H04R 17/02 (2013.01); H01L 41/1136 (2013.01); H01L 41/1138 (2013.01); H01L 41/187 (2013.01); H01L 41/316 (2013.01); H03H 3/02 (2013.01); H03H 9/02574 (2013.01); H03H 9/173 (2013.01); H03H 9/174 (2013.01); H04R 17/10 (2013.01); H04R 31/00 (2013.01);
Abstract

A piezoelectric element includes a first piezoelectric layer which has a first polarization axis direction in a thickness direction of the first piezoelectric layer and is made of AlN. A second piezoelectric layer made of GeAlN which is deposited on the first piezoelectric layer and has a second polarization axis direction opposite to the first polarization axis direction. A first electrode is provided on a side of the first piezoelectric layer which is opposite from a side where the second piezoelectric layer is disposed. A second electrode provided on a side of the second piezoelectric layer which is opposite from a side where the first piezoelectric layer is disposed.

Find Patent Forward Citations

Umeda, Keiichi. (2019). Piezoelectric element, piezoelectric microphone, piezoelectric resonator and method for manufacturing piezoelectric element (U.S. Patent No. 10397708). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10397708

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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