US 12,335,686 B2
Apparatus and vehicular apparatus including the same
YuSeon Kho, Paju-si (KR); and Sooyoun Kim, Paju-si (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Nov. 8, 2023, as Appl. No. 18/388,092.
Application 18/388,092 is a continuation of application No. 17/982,025, filed on Nov. 7, 2022, granted, now 11,849,267.
Claims priority of application No. 10-2021-0194808 (KR), filed on Dec. 31, 2021.
Prior Publication US 2024/0073623 A1, Feb. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04R 17/00 (2006.01)
CPC H04R 17/00 (2013.01) [H04R 2499/13 (2013.01); H04R 2499/15 (2013.01)] 28 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a vibration member;
a housing at a rear surface of the vibration member;
a vibration apparatus configured to vibrate the vibration member; and
a curvature variable layer between the vibration member and the vibration apparatus,
wherein the vibration member comprises:
at least one flat portion; and
at least one flexural portion adjacent to the at least one flat portion,
wherein the vibration apparatus comprises a vibration device,
wherein the vibration device comprises:
a vibration portion;
a first electrode portion at a first surface of the vibration portion; and
a second electrode portion at a second surface different from the first surface of the vibration portion,
wherein the vibration apparatus vibrates based on an alternating current (AC) vibration driving signal, and
wherein the curvature variable layer includes a piezoelectric material and maintains a contraction state or an expansion state based on a variable signal having a direct current (DC) voltage.