Patent ID: 11910158
Assignee: LG DISPLAY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 25:
26. A vibration device, comprising:
a vibration portion;
a first electrode portion disposed on a first surface of the vibration portion; and
a second electrode portion disposed on a second surface of the vibration portion,
wherein each of the first and second electrode portions includes at least one of a conductive metal particle and a carbon particle,
wherein the vibration portion includes:
a plurality of inorganic vibration portions, each of the plurality of inorganic vibration portions including a piezoelectric material; and
an organic vibration portion disposed between at least two of the plurality of inorganic vibration portions,

wherein at least one of a first layer of the first electrode portion and a first layer of the second electrode portion includes:
a first portion overlapping with at least one of the plurality of inorganic vibration portion; and
a second portion overlapping with the organic vibration portion,

wherein the first portion includes at least one of a carbon particle and a piezoelectric nanoparticle, and
the second portion includes at least one of an organic material, an organic polymer, an organic piezoelectric material, and an organic non-piezoelectric material.