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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.:

US 9324933 B1

PDFFull Text
Date of Patent:
Apr. 26, 2016

Filed:

Mar. 26, 2014

Piezoelectric material, piezoelectric element, liquid ejecting head, liquid ejecting apparatus, ultrasonic sensor, piezoelectric motor, and power generator

Applicant:

Seiko Epson Corporation, Tokyo, JP;

Inventors:

Koji Sumi, Shiojiri, JP;

Kazuya Kitada, Suwa, JP;

Tomohiro Sakai, Matsumoto, JP;

Yasuaki Hamada, Chino, JP;

Tetsuya Isshiki, Shiojiri, JP;

Satoshi Kimura, Fujimi, JP;

Akio Ito, Matsumoto, JP;

Tsuneo Handa, Shimosuwa, JP;

Assignee:

Seiko Epson Corporation, , JP;

Attorney:

Harness, Dickey & Pierce, P.L.C.

Primary Examiner:

An Do

Int. Cl.
CPC ...
B41J 2/045 (2006.01); H01L 41/18 (2006.01); B41J 2/14 (2006.01); C04B 35/495 (2006.01); H01L 41/187 (2006.01); G01H 11/08 (2006.01); H01L 41/047 (2006.01); H02N 2/00 (2006.01); B41J 2/055 (2006.01); C04B 35/468 (2006.01); H02N 2/18 (2006.01);
U.S. Cl.
CPC ...
H01L 41/183 (2013.01); B41J 2/055 (2013.01); B41J 2/14201 (2013.01); B41J 2/14233 (2013.01); C04B 35/4682 (2013.01); C04B 35/495 (2013.01); G01H 11/08 (2013.01); H01L 41/047 (2013.01); H01L 41/187 (2013.01); H01L 41/1871 (2013.01); H01L 41/1873 (2013.01); H01L 41/1878 (2013.01); H02N 2/001 (2013.01); B41J 2002/14241 (2013.01); B41J 2202/03 (2013.01); C04B 2235/3201 (2013.01); C04B 2235/3203 (2013.01); C04B 2235/3213 (2013.01); C04B 2235/3215 (2013.01); C04B 2235/3236 (2013.01); C04B 2235/3244 (2013.01); C04B 2235/3249 (2013.01); C04B 2235/3255 (2013.01); C04B 2235/3262 (2013.01); C04B 2235/3274 (2013.01); C04B 2235/3293 (2013.01); C04B 2235/3298 (2013.01); C04B 2235/441 (2013.01); C04B 2235/768 (2013.01); C04B 2237/76 (2013.01); C04B 2237/765 (2013.01); H02N 2/186 (2013.01);
Abstract

A piezoelectric material contains a first component that is a rhombohedral crystal and that is configured to have a complex oxide with a perovskite structure and Curie temperature Tc1, a second component that is a crystal other than a rhombohedral crystal and that is configured to have a complex oxide with a perovskite structure and Curie temperature e Tc2, and a third component that is a rhombohedral crystal and that is configured to have a complex oxide with a perovskite structure and Curie temperature Tc3 different from the first component, and in which Tc2 is higher than Tc1, Tc3 is equal to or higher than Tc2, and a value of (0.1×Tc1+0.9×Tc2) is equal to or lower than 280° C.

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