Patent ID: 11968903
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A piezoelectric element for a speaker, the piezoelectric element comprising:
a plurality of piezoelectric ceramic layers stacked on one another in a thickness direction; and
a plurality of electrodes connected to middle portions of sides of the plurality of piezoelectric ceramic layers along external walls of the plurality of piezoelectric ceramic layers,
wherein each piezoelectric ceramic layer in the plurality of piezoelectric ceramic layers comprises at least one recessed side and at least one non-recessed side among a plurality of sides of the piezoelectric ceramic layer, the at least one recessed side comprising a recessed portion disposed in a middle of the recessed side by etching, and the at least one non-recessed side having no recessed portion by etching, and
wherein the plurality of piezoelectric ceramic layers are stacked on one another in the thickness direction such that non-recessed sides, of adjacently stacked piezoelectric ceramic layers in the plurality of piezoelectric ceramic layers, do not overlap in the thickness direction.