US 12,471,495 B2
Composition of piezoelectric material, method for fabricating the same, piezoelectric device, and display apparatus comprising piezoelectric device
YongWoo Lee, Paju-si (KR); Chiwan Kim, Paju-si (KR); Yong-Su Ham, Paju-si (KR); YuSeon Kho, Paju-si (KR); Seunghyun Sung, Paju-si (KR); Sahn Nahm, Seoul (KR); Dae-Su Kim, Seoul (KR); Su-Hwan Go, Seoul (KR); Jae-Min Eum, Seoul (KR); and Ho-Sung Shin, Seoul (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR); and KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION, Seoul (KR)
Filed by LG DISPLAY CO., LTD., Seoul (KR); and KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION, Seoul (KR)
Filed on Dec. 22, 2021, as Appl. No. 17/559,687.
Claims priority of application No. 10-2020-0182220 (KR), filed on Dec. 23, 2020.
Prior Publication US 2022/0199896 A1, Jun. 23, 2022
Int. Cl. H01L 41/18 (2006.01); H10N 30/097 (2023.01); H10N 30/87 (2023.01)
CPC H10N 30/097 (2023.02) [H10N 30/87 (2023.02)] 17 Claims
OG exemplary drawing
 
1. A composition comprising a piezoelectric material according to Chemical Formula 1:
(1−y)(NaaK1-a)(Nb1-x,Sbx)−ySrZrO3+n mol % CuO,  [Chemical Formula 1]
wherein 0.01≤y≤0.10, 0.4≤a≤0.6, 0≤x≤0.06, and 0.5≤n≤1.5
further comprising:
a first material; and
a second material surrounded by the first material, wherein the second material comprises sodium niobate (NaNbO3).