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1. WO2000031808 - HIGH-SENSITIVITY PIEZOCOMPOSITE MATERIAL AND ULTRASONIC TRANSDUCER MADE THEREFROM

Publication Number WO/2000/031808
Publication Date 02.06.2000
International Application No. PCT/US1999/027503
International Filing Date 19.11.1999
IPC
H01L 41/113 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
08Piezo-electric or electrostrictive elements
113with mechanical input and electrical output
H01L 41/18 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
16Selection of materials
18for piezo-electric or electrostrictive elements
CPC
H01L 41/183
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
16Selection of materials
18for piezo-electric or electrostrictive devices ; , e.g. bulk piezo-electric crystals
183Composite materials, e.g. having 1-3 or 2-2 type connectivity
Applicants
  • GENERAL ELECTRIC COMPANY [US]/[US] (AllExceptUS)
  • SEYED-BOLORFORSH, Mir, Said [--]/[US] (UsOnly)
Inventors
  • SEYED-BOLORFORSH, Mir, Said
Agents
  • STECKLER, Henry, I.
Priority Data
09/200,36125.11.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HIGH-SENSITIVITY PIEZOCOMPOSITE MATERIAL AND ULTRASONIC TRANSDUCER MADE THEREFROM
(FR) MATERIAU PIEZOCOMPOSITE HAUTE SENSIBILITE ET TRANSDUCTEUR ULTRASONORE A BASE DE CE MATERIAU
Abstract
(EN)
A piezoelectrically active conformal filler material is incorporated in a 1-3, 3-3 or 2-2 piezocomposite structure. The piezoelectrically active conformal filler material has a 0-3 structure and is made of fine piezoelectric ceramic particles surrounded by a conformal polymer matrix. Using such piezocomposite material, the reception and transmission sensitivity (efficiency) of a piezoelectric layer can be improved without any increase in the acoustic impedance of the final piezoelectric layer. The resulting piezocomposite material can be used to fabricate ultrasonic transducer arrays.
(FR)
On incorpore un matériau d'apport conforme, à activité piézoélectrique, dans une structure piézocomposite 1-3, 3-3 ou 2-2. Ce matériau, qui présente une structure 0-3, est constitué de fines particules céramiques piézoélectriques entourées d'une matrice polymère conforme. L'utilisation d'un tel matériau permet d'améliorer la sensibilité (l'efficacité) de réception et de transmission d'une couche piézoélectrique, sans augmenter l'impédance acoustique de la couche piézoélectrique finale. Le matériau considéré peut entrer dans la fabrication de réseaux de transducteurs ultrasonores.
Also published as
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