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. 15, 2024
Filed:
Jan. 20, 2020
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Yoshiki Ohta, Tokyo, JP;
Takuto Horii, Tokyo, JP;
Yoshikazu Shimura, Tokyo, JP;
Atsushi Ezawa, Tokyo, JP;
Miho Bamba, Tokyo, JP;
Kaoru Kijima, Tokyo, JP;
Akihiro Takeda, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/047 (2006.01); H04R 1/24 (2006.01); H04R 7/04 (2006.01); H04R 17/00 (2006.01); H10N 30/20 (2023.01); H10N 30/50 (2023.01); H10N 30/87 (2023.01);
U.S. Cl.
CPC ...
H04R 1/24 (2013.01); H04R 7/04 (2013.01); H04R 17/00 (2013.01); H10N 30/2047 (2023.02); H10N 30/50 (2023.02); H10N 30/874 (2023.02); H10N 30/875 (2023.02);
Abstract
An audio device includes a vibration member, and a first piezoelectric vibrator and a second piezoelectric vibrator that are provided on the vibration member. A natural frequency of the first piezoelectric vibrator is larger than a natural frequency of the second piezoelectric vibrator.