ACOUSTIC DEVICES Russian patent published in 2023 - IPC A61F11/00 H04R17/00 H04R25/00 H03H9/00 

FIELD: medicine.

SUBSTANCE: acoustic device comprising: a piezoelectric component, wherein the piezoelectric component is configured to generate vibration under the influence of an exciting voltage; an electrode, wherein the electrode is configured to apply an exciting voltage to the piezoelectric component; and a vibration component, being mechanically or electromagnetically coupled to the piezoelectric component to receive vibration and generate sound, the piezoelectric component including: a substrate; and a piezoelectric layer, wherein the piezoelectric layer covers the surface of the substrate, the electrode covers the surface of the piezoelectric layer, and the coverage area of the electrode on the surface of the piezoelectric layer is less than the surface area of the substrate covered by the piezoelectric layer, wherein the piezoelectric layer and the substrate are aligned, and the piezoelectric layer includes the piezoelectric region both the non-piezoelectric region and the piezoelectric region and the electrode are combined. An acoustic device comprising: a piezoelectric component, wherein the piezoelectric component is configured to generate vibration under the influence of an exciting voltage; an electrode, wherein the electrode is configured to apply an exciting voltage to the piezoelectric component; and a vibration component, being mechanically or electromagnetically coupled to the piezoelectric component to receive vibration and generate sound, the piezoelectric component comprising: a substrate; and a piezoelectric layer, wherein the piezoelectric layer covers the surface of the substrate, wherein the piezoelectric layer includes a piezoelectric region and a non-piezoelectric region, wherein the electrode covers the surface of the piezoelectric layer; the substrate, piezoelectric layer and electrode are respectively aligned; and the coverage area of the piezoelectric region on the substrate is smaller than the coverage area of the piezoelectric layer on the substrate.

EFFECT: increasing the reliability of the acoustic device and simplifying the design of the acoustic device.

9 cl, 24 dwg