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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 11509244 B1

PDFFull Text
Date of Patent:
Nov. 22, 2022

Filed:

Jan. 29, 2020

Piezoelectric material, piezoelectric element, and electronic equipment

Applicants:

Canon Kabushiki Kaisha, Tokyo, JP;

Fuji Chemical Co., Ltd., Osaka, JP;

Inventors:

Takanori Matsuda, Chofu, JP;

Makoto Kubota, Yokohama, JP;

Hisato Yabuta, Machida, JP;

Miki Ueda, Tokyo, JP;

Kanako Oshima, Tokyo, JP;

Fumio Uchida, Daito, JP;

Hiroki Imai, Nakatsugawa, JP;

Kenji Maeda, Hirakata, JP;

Chiemi Shimizu, Hirakata, JP;

Assignees:

CANON KABUSHIKI KAISHA, Tokyo, JP;

FUJI CHEMICAL CO., LTD., Osaka, JP;

Attorney:

Venable LLP

Primary Examiner:

Lisa Solomon

Int. Cl.
CPC ...
H02N 2/10 (2006.01); H04N 5/225 (2006.01); B41J 2/14 (2006.01); C04B 35/495 (2006.01); C04B 35/626 (2006.01); C04B 35/63 (2006.01); C04B 35/64 (2006.01); H01L 41/047 (2006.01); H01L 41/083 (2006.01); H01L 41/09 (2006.01); H01L 41/187 (2006.01); H01L 41/273 (2013.01);
U.S. Cl.
CPC ...
H02N 2/103 (2013.01); B41J 2/14233 (2013.01); C04B 35/495 (2013.01); C04B 35/6262 (2013.01); C04B 35/62695 (2013.01); C04B 35/6303 (2013.01); C04B 35/64 (2013.01); H01L 41/0471 (2013.01); H01L 41/083 (2013.01); H01L 41/0973 (2013.01); H01L 41/1871 (2013.01); H01L 41/1873 (2013.01); H01L 41/273 (2013.01); H04N 5/22521 (2018.08); C04B 2235/3206 (2013.01); C04B 2235/3236 (2013.01); C04B 2235/3255 (2013.01); C04B 2235/3263 (2013.01); C04B 2235/604 (2013.01); C04B 2235/6567 (2013.01); C04B 2235/768 (2013.01);
Abstract

A lead-free piezoelectric material includes perovskite-type metal oxide containing Na, Nb, Ba, Ti, and Mg and indicates excellent piezoelectric properties. The piezoelectric material satisfies the following relational expression (1): 0.430≤a≤0.460, 0.433≤b≤0.479, 0.040≤c≤0.070, 0.0125≤d≤0.0650, 0.0015≤e≤0.0092, 0.9×3e≤c−d≤1.1×3e, a+b+c+d+e=1, where a, b, c, d, and e denote the relative numbers of Na, Nb, Ba, Ti, and Mg atoms, respectively.

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