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

Claim 19:
20. 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, and

wherein the first electrode portion includes:
a first layer disposed adjacent to the vibration portion, the first layer including a carbon particle and a piezoelectric nanoparticle; and
a second layer disposed at the first layer, the second layer including a conductive metal flake particle.