US 12,069,427 B2
Sound generator, sound apparatus and apparatus comprising the same
Jaehun Ye, Tokyo (JP); and Takayuki Suzuki, Tokyo (JP)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG DISPLAY CO., LTD., Seoul (KR)
Filed on Dec. 30, 2021, as Appl. No. 17/566,158.
Claims priority of application No. 2021-000698 (JP), filed on Jan. 6, 2021.
Prior Publication US 2022/0217472 A1, Jul. 7, 2022
Int. Cl. H04R 17/00 (2006.01)
CPC H04R 17/00 (2013.01) 16 Claims
OG exemplary drawing
 
1. A sound generator, comprising:
a vibration plate;
a vibration portion including a first vibration device and a second vibration device disposed at a rear surface of the vibration plate that intersect with each other; and
a connection portion connected between the vibration plate and the vibration portion,
wherein each of the first vibration device and the second vibration device includes a plurality of piezoelectric layers and a common electrode disposed between the plurality of piezoelectric layers and including at least one weight member.