COMPOSITE PIEZOELECTRIC BODY

Title:

COMPOSITE PIEZOELECTRIC BODY

Document Type and Number:

WIPO Patent Application WO/2003/088369

Kind Code:

A1

Abstract:

A composite piezoelectric body, comprising mainly a piezoelectric ceramics and a high polymer having a bulk density reduced to 0.4 g/cm³ or less by diffusing air bubbles therein, whereby the bulk density can be lowered, an electromechanical coupling factor can be increased despite the fact that the volume ratio of the piezoelectric ceramics is small, an acoustic impedance can be decreased, and a productivity can also be increased in manufacturing an ultrasonic probe.

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Inventors:

CHISAKA MAKOTO (JP)
KOBAYASHI OSAMU (JP)

Application Number:

PCT/JP2003/004388

Publication Date:

October 23, 2003

Filing Date:

April 04, 2003

Export Citation:

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Assignee:

TAYCA CORP (JP)
CHISAKA MAKOTO (JP)
KOBAYASHI OSAMU (JP)

International Classes:

C04B35/00; H01L41/08; H01L41/18; H01L41/45; H04R17/00; H04R31/00; (IPC1-7): H01L41/18

Foreign References:

JP2000324599A	2000-11-24
JPH08119771A	1996-05-14

Other References:

KLICKER K.A., SCHULZE W.A. AND BIGGERS J.V.: "Piezoelectric composites with 3-1 connectivity and a foamed polyurethane matrix", COMMUNICATIONS OF THE AMERICAN CERAMIC SOCIETY, vol. 65, December 1982 (1982-12-01), pages C-208 - C-210, XP002970247

Attorney, Agent or Firm:

Miwa, Tetsuo (1-13-15 Nishi-shinsaibashi, Chuo-k, Osaka-shi Osaka, JP)

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