Patent ID: 11879793
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A vibration sensor comprising a plurality of laminated bodies including a first laminated body and a second laminated body, each of the plurality of laminated bodies including:
support layer a first end of which is fixed;
a piezoelectric layer on the support layer;
an insulating layer disposed between the support layer and the piezoelectric layer;
a common electrode disposed on a first principal surface of the piezoelectric layer;
a first sensing electrode disposed in a first area on a second principal surface of the piezoelectric layer on a side opposite to the first principal surface; and
a drive electrode disposed in a second area different from the first area on the second principal surface of the piezoelectric layer,
wherein
the first area is located near the first end of the support layer,
the first sensing electrode in the first laminated body is electrically connected to the common electrode in the second laminated body, and
the drive electrode in the first laminated body is electrically connected to the drive electrode in the second laminated body.