The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 2017
Filed:
Jun. 09, 2016
Applicant:
Taiyo Yuden Co., Ltd., Taito-ku, Tokyo, JP;
Inventors:
Shinichiro Ikemi, Takasaki, JP;
Yutaka Doshida, Takasaki, JP;
Assignee:
TAIYO YUDEN CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/187 (2006.01); C04B 35/493 (2006.01); C04B 35/626 (2006.01); H01L 41/43 (2013.01); H01L 41/047 (2006.01); C04B 35/495 (2006.01); C04B 35/491 (2006.01); C04B 35/499 (2006.01); C04B 35/50 (2006.01);
U.S. Cl.
CPC ...
H01L 41/1873 (2013.01); C04B 35/491 (2013.01); C04B 35/493 (2013.01); C04B 35/495 (2013.01); C04B 35/499 (2013.01); C04B 35/50 (2013.01); C04B 35/62685 (2013.01); H01L 41/0477 (2013.01); H01L 41/1875 (2013.01); H01L 41/1876 (2013.01); H01L 41/43 (2013.01); C04B 2235/3203 (2013.01); C04B 2235/3224 (2013.01); C04B 2235/3227 (2013.01); C04B 2235/3249 (2013.01); C04B 2235/3251 (2013.01); C04B 2235/3255 (2013.01); C04B 2235/3279 (2013.01); C04B 2235/3284 (2013.01); C04B 2235/3291 (2013.01); C04B 2235/3296 (2013.01); C04B 2235/768 (2013.01); C04B 2235/786 (2013.01); C04B 2235/85 (2013.01);
Abstract
A piezoelectric device has a piezoelectric ceramic layer obtained by sintering a piezoelectric ceramic composition that contains an alkali-containing niobate type perovskite composition which is represented by (LiNaK)(NbTa)O(wherein 0.04≦l≦0.1, 0≦m≦1, 0.95≦n≦1.05, 0≦o≦1) and Ag component, as well as a conductor layer sandwiching the piezoelectric ceramic layer. The piezoelectric ceramic layer has Ag segregated in voids present in a sintered compact of the perovskite composition in terms of oxides relative to the perovskite composition.