Title:
PIEZOELECTRIC SINGLE CRYSTAL INCLUDING INTERNAL ELECTRIC FIELD, METHOD FOR MANUFACTURING SAME, AND PIEZOELECTRIC AND DIELECTRIC APPLICATION COMPONENTS USING SAME
Document Type and Number:
WIPO Patent Application WO/2022/124794
Kind Code:
A1
Abstract:
The present invention relates to a piezoelectric single crystal including an internal electric field, a manufacturing method therefor, and piezoelectric and dielectric application components using the piezoelectric single crystal. The piezoelectric single crystal of the present invention has a perovskite crystal structure ([A][B]O3) in which changes in the composition of [A] ions, [B] ions and [O] ions and the partial oxygen pressure during heat treatment in a manufacturing process are controlled so that a high dielectric constant and a piezoelectric constant, which are inherent in the piezoelectric single crystal, are maintained and the characteristics of a high internal bias electric field (EI), which are essential for the electrical stability of the piezoelectric single crystal, are simultaneously satisfied, and thus the piezoelectric application components and dielectric application components using the piezoelectric single crystal having excellent characteristics can be manufactured and used under wide temperature region and operational voltage conditions.
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Inventors:
LEE HO YONG (KR)
BAICK WON SUN (KR)
KIM MOON CHAN (KR)
OH HYUN TAEK (KR)
JOO HYUN JAE (KR)
BAICK WON SUN (KR)
KIM MOON CHAN (KR)
OH HYUN TAEK (KR)
JOO HYUN JAE (KR)
Application Number:
PCT/KR2021/018539
Publication Date:
June 16, 2022
Filing Date:
December 08, 2021
Export Citation:
Assignee:
CERACOMP CO LTD (KR)
International Classes:
H01L41/187; H01L41/09; H01L41/113; H01L41/193; H01L41/39; H01L41/41
Foreign References:
| KR100743614B1 | 2007-07-30 | |||
| KR20130132988A | 2013-12-05 | |||
| KR101779899B1 | 2017-09-19 | |||
| US20090212667A1 | 2009-08-27 | |||
| US20150372219A1 | 2015-12-24 |
Attorney, Agent or Firm:
EO PATENT LAW FIRM (KR)
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