公开(公告)号：US12120483B2

公开(公告)日：2024-10-15

申请号：US17424257

申请日：2020-01-20

Applicant: TDK CORPORATION

Inventor： Yoshiki Ohta ,  Takuto Horii ,  Yoshikazu Shimura ,  Atsushi Ezawa ,  Miho Bamba ,  Kaoru Kijima ,  Akihiro Takeda

IPC: H01L41/047 ,  H04R1/24 ,  H04R7/04 ,  H04R17/00 ,  H10N30/20 ,  H10N30/50 ,  H10N30/87

CPC classification number: H04R1/24 ,  H04R7/04 ,  H04R17/00 ,  H10N30/2047 ,  H10N30/50 ,  H10N30/874 ,  H10N30/875

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.