Title:
LAMINATED PIEZOELECTRIC BODY AND MANUFACTURING METHOD OF SAME, ULTRASONIC TRANSDUCER USING SAME AND ULTRASONIC DIAGNOSTIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/121882
Kind Code:
A1
Abstract:
Disclosed are a laminated piezoelectric body, a laminated piezoelectric body manufacturing method, an ultrasonic transducer and an ultrasonic diagnostic device, wherein a plurality of mutually laminated piezoelectric bodies is electrically connected in parallel to each other, and each of the plurality of piezoelectric bodies arranges a direction of residual polarity related to electrical displacement or a sign of an electric field caused by a direct piezoelectric effect, or a crystal axis in a direction to reduce sensitivity in a first resonance mode, with reference to an axis of a first level of piezoelectric on a fixed edge side, and in a direction to increase sensitivity in a second resonance mode to a higher level than the first resonance mode.
Inventors:
NISHIKUBO YUUICHI (JP)
OHNUMA KENJI (JP)
MORITA KIYOKAZU (JP)
SUZUKI KENJI (JP)
KODAMA HIDEKAZU (JP)
DATE MUNEHIRO (JP)
OHNUMA KENJI (JP)
MORITA KIYOKAZU (JP)
SUZUKI KENJI (JP)
KODAMA HIDEKAZU (JP)
DATE MUNEHIRO (JP)
Application Number:
PCT/JP2011/001033
Publication Date:
October 06, 2011
Filing Date:
February 23, 2011
Export Citation:
Assignee:
KONICA MINOLTA MED & GRAPHIC (JP)
NISHIKUBO YUUICHI (JP)
OHNUMA KENJI (JP)
MORITA KIYOKAZU (JP)
SUZUKI KENJI (JP)
KODAMA HIDEKAZU (JP)
DATE MUNEHIRO (JP)
NISHIKUBO YUUICHI (JP)
OHNUMA KENJI (JP)
MORITA KIYOKAZU (JP)
SUZUKI KENJI (JP)
KODAMA HIDEKAZU (JP)
DATE MUNEHIRO (JP)
International Classes:
H04R17/10; A61B8/00; H04R17/00
Domestic Patent References:
| WO2008015917A1 | 2008-02-07 |
Foreign References:
| JPH04211600A | 1992-08-03 | |||
| US5163436A | 1992-11-17 | |||
| JP2003133898A | 2003-05-09 | |||
| JPH05243632A | 1993-09-21 | |||
| JPS6477298A | 1989-03-23 |
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (JP)
Etsuji Kotani (JP)
Etsuji Kotani (JP)
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Claims: