USPatentGranted
B2

Piezoelectric material, piezoelectric element, and electronic device

Granted 7 Jul 2015 · 2 office actions

Assignee: Canon Inc.

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Inventors: Tatsuo Furuta, Takayuki Watanabe, Hisato Yabuta, Shunsuke Murakami +1 · Examiner: An Do · AU 2853 · TC 2800

Life of the patent

3 dated events
⤢ drag to zoomJul 2014Oct 2014Jan 2015Apr 2015Jul 2015Prosecution
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Abstract

There is provided a piezoelectric material not containing any lead component, having stable piezoelectric characteristics in an operating temperature range, a high mechanical quality factor, and satisfactory piezoelectric characteristics. The piezoelectric material according to the present invention includes a main component containing a perovskite-type metal oxide that can be expressed using the following general formula (1), and subcomponents containing Mn, Li, and Bi. When the metal oxide is 100 parts by weight, the content of Mn on a metal basis is not less than 0.04 parts by weight and is not greater than 0.36 parts by weight, content α of Li on a metal basis is equal to or less than 0.0012 parts by weight (including 0 parts by weight), and content β of Bi on a metal basis is not less than 0.042 parts by weight and is not greater than 0.850 parts by weight (Ba 1-x Ca x ) a (Ti 1-y-z Zr y Sn z )O 3   (1) (in the formula (1), 0.09≦x≦0.30, 0.025≦y≦0.085, 0≦z≦0.02, and 0.986≦a≦1.02).

Claims

28 · 1 independent · depth 6
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28 granted claims

Classifications

12 codes
IPC · International Patent Classification
Section B — Performing operations; transporting
  • B41J2/14
  • B41J2/045
  • B06B1/06
Section C — Chemistry; metallurgy
  • C04B35/468
Section G — Physics
  • G02B27/00
Section H — Electricity
  • H01L41/18
  • H02N2/10
  • H01L41/047
  • H02N2/16
  • H01L41/083
  • H01L41/187
  • H01L41/09

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File wrapper

Pendency
1.0 y
362 days filing → grant
Office actions
1
non-final + final
Responses
1
no RCE
Examiner
An Do
art unit 2853 · TC 2800
Citations: 26 back · 0 forward

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Priority chain

1 priority documents
›Priority documents — 1
TypeDocumentDate
related publicationUS 20150015642 A115 Jan 2015

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