US 11,722,825 B2
Vibration generating device and display apparatus including the same
YongWoo Lee, Paju-si (KR); Chiwan Kim, Paju-si (KR); Taeheon Kim, Paju-si (KR); Sung-Eui Shin, Paju-si (KR); Kyungyeol Ryu, Paju-si (KR); YuSeon Kho, Paju-si (KR); YongGyoon Jang, Paju-si (KR); Yong-Su Ham, Paju-si (KR); and Sungwook Ko, Paju-si (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Jul. 22, 2022, as Appl. No. 17/871,842.
Application 17/871,842 is a continuation of application No. 17/169,056, filed on Feb. 5, 2021, granted, now 11,412,331.
Application 17/169,056 is a continuation of application No. 16/722,713, filed on Dec. 20, 2019, granted, now 10,951,992, issued on Mar. 16, 2021.
Claims priority of application No. 10-2018-0174267 (KR), filed on Dec. 31, 2018; and application No. 10-2019-0159972 (KR), filed on Dec. 4, 2019.
Prior Publication US 2022/0360907 A1, Nov. 10, 2022
Int. Cl. H04R 17/00 (2006.01); H04R 1/02 (2006.01); H04R 1/28 (2006.01); H04R 3/12 (2006.01); G08B 6/00 (2006.01); H04R 1/40 (2006.01)
CPC H04R 17/00 (2013.01) [G08B 6/00 (2013.01); H04R 1/028 (2013.01); H04R 1/288 (2013.01); H04R 1/403 (2013.01); H04R 3/12 (2013.01); H04R 2499/15 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A vibration generating apparatus, comprising:
a plurality of piezoelectric members;
a damping member configured between the plurality of piezoelectric members, the damping member comprising a piezoelectric ceramic fiber;
a first electrode on a first surface of the plurality of piezoelectric members and a first surface of the damping member; and
a plurality of second electrodes on a second surface of the plurality of piezoelectric members,
wherein the first electrode contacts the first surface of the plurality of piezoelectric members and the first surface of the damping member.