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

Claim 15:
16. An apparatus, comprising:
a vibration module, including:
a piezoelectric composite layer, including:
a plurality of piezoelectric portions being spaced apart from one another along a first direction; 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;
a second electrode layer on a second surface of the plurality of piezoelectric portions and a second surface of the flexible portion; and

a vibration plate configured to vibrate according to a vibration of the vibration module,
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.