Patent ID: 11930320
Assignee: LG DISPLAY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A vibration module, comprising:
a piezoelectric composite layer, including:
a plurality of piezoelectric portions and a flexible portion between the plurality of piezoelectric portions;
a first electrode layer on a first surface of the plurality of piezoelectric portions and a first surface of the flexible portion; and
a second electrode layer on a second surface of the plurality of piezoelectric portions and a second surface of the flexible portion,

wherein each of the first surface and the second surface is configured to have a plane surface structure,
wherein the plurality of piezoelectric portions is spaced apart from one another along a first direction,
wherein each of the plurality of piezoelectric portions has a line shape along a second direction crossing to the first direction, and
wherein at least two of the plurality of piezoelectric parts have different lengths along the second direction.