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:
Nov. 04, 2014
Filed:
Oct. 30, 2012
Seiko Epson Corporation, Tokyo, JP;
Kazuya Kitada, Suwa, JP;
Masayuki Omoto, Chino, JP;
Seiko Epson Corporation, , JP;
Abstract
Provided is a piezoelectric element including a first electrode, a piezoelectric layer, and a second electrode, wherein the piezoelectric layer is formed of a complex oxide having a perovskite structure containing bismuth, barium, iron and titanium, binding energy of C—C and C—H states of a peak due to C 1s in an X-ray photoelectron spectroscopy measurement is standardized as 284.8 eV, when a peak obtained in a range of a binding energy of 775 eV or more and 785 eV or less is separated using a Gauss function, the binding energy has the peak in 779.0±0.8 eV, and one or more peak having intensity lower than that of the peak is included at the high binding energy side.