US 12,322,373 B2
Vibration device and apparatus including the same
Seunghyun Sung, Paju-si (KR); YongWoo Lee, Paju-si (KR); and Uihyeon Jeong, Paju-si (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Dec. 22, 2021, as Appl. No. 17/559,977.
Claims priority of application No. 10-2020-0184949 (KR), filed on Dec. 28, 2020.
Prior Publication US 2022/0208163 A1, Jun. 30, 2022
Int. Cl. H10N 30/30 (2023.01); B60R 11/02 (2006.01); G06F 3/16 (2006.01); G10K 9/125 (2006.01)
CPC G10K 9/125 (2013.01) [B60R 11/0235 (2013.01); G06F 3/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A vibration device, comprising:
a vibration generator including a vibration portion,
wherein the vibration portion includes:
a plurality of inorganic portions having piezoelectric characteristics, the plurality of inorganic portions being spaced apart from each other; and
an organic portion disposed between at least two inorganic portions among the plurality of inorganic portions, the organic portion having non-piezoelectric characteristics,
wherein the organic portion includes a first organic portion and a second organic portion, the first organic portion being disposed between one of the plurality of inorganic portions and the second organic portion, and
wherein an elastic modulus of the first organic portion is lower than an elastic modulus of the second organic portion.