PIEZOELECTRIC VIBRATION COMPONENT AND PORTABLE TERMINAL

摘要

A piezoelectric vibration component and a portable terminal each include a piezoelectric vibration element 14 and a power supply line 51. The piezoelectric vibration element 14 includes at least: a layered structure 20 in which a plurality of internal electrodes and piezoelectric layers are layered in a first direction; and surface electrodes 33 and 31 electrically connected to the internal electrodes. The piezoelectric vibration element 14 bends and vibrates, and its amplitude changes in a second direction perpendicular to the first direction. The power supply line 51 includes at least: a conductive path 53 including a connection part 56 bonded to a surface electrode 33; and a conductive path 52 including a connection part 57 bonded to a surface electrode 31. The connection part 56 has a plurality of partial electrodes 56a and 56b that extend in a third direction perpendicular to both the first direction and the second direction.

主权项

1. A piezoelectric vibration component comprising:
a piezoelectric vibration element including at least:
a layered structure in which a plurality of internal electrodes and a plurality of piezoelectric layers are layered in a first direction; anda first surface electrode and a second surface electrode which are electrically connected to the internal electrodes, the piezoelectric vibration element bending and vibrating in the first direction in response to an input of an electrical signal, an amplitude of the piezoelectric vibration element changing in a second direction perpendicular to the first direction; and a power supply line including at least:
a first conductive path including a first connection part bonded to the first surface electrode at an end of the first conductive path; anda second conductive path including a second connection part bonded to the second surface electrode at an end of the second conductive path, wherein the layered structure including a first section at its center in the second direction, the plurality of internal electrodes and the plurality of piezoelectric layers being arranged alternately within the first section, the first surface electrode being disposed on a first surface, the first surface being one surface of the layered structure in the first direction, the first surface electrode being at least partially positioned within the first section on the first surface, the first connection part of the first conductive path being bonded to the first surface electrode within the first section, the first connection part including a plurality of partial electrodes extending in a third direction perpendicular to both the first direction and the second direction.