Patent ID: 11913842
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 7:
8. The temperature sensor according to claim 1, wherein
the piezoelectric body is bonded to the back surface of the second piezoelectric substrate opposite to the surface of the second piezoelectric substrate on which the second surface acoustic wave propagates,
the piezoelectric body is a laminate and includes a first electrode, a first piezoelectric body, a second electrode, a second piezoelectric body, and a third electrode laminated in this order,
the first electrode contacts the back surface of the second piezoelectric substrate,
the thermocouple is connected to the first electrode and the third electrode, and
the piezoelectric body is deformed by the electromotive force of the thermocouple to change the path length of the propagation path of the second surface acoustic wave on the second piezoelectric substrate with respect to the path length before the deformation by the electromotive force.