| CPC H04R 17/00 (2013.01) [H10N 30/852 (2023.02); H04R 2499/13 (2013.01); H04R 2499/15 (2013.01)] | 51 Claims |
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1. A vibration device, comprising:
a first vibration generator; and
a protection member at a first surface of the first vibration generator or a second surface of the first vibration generator opposite to the first surface of the first vibration generator,
wherein the first vibration generator comprises a first vibration part including:
a plurality of inorganic material portions having a piezoelectric characteristic; and
an organic material portion between the plurality of inorganic material portions,
wherein the protection member comprises:
a base material; and
an adhesive layer at a first surface of the base material,
wherein the adhesive layer contacts the first vibration generator,
wherein the base material comprises at least one protrusion portion protruding toward the first vibration generator, and
wherein the at least one protrusion portion overlaps with at least one of the plurality of inorganic material portions of the first vibration part.
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