EP 1016145 A4 20020508 - MULTILAYER PIEZOELECTRIC CERAMIC TRANSDUCER AND FABRICATION METHOD
Title (en)
MULTILAYER PIEZOELECTRIC CERAMIC TRANSDUCER AND FABRICATION METHOD
Title (de)
PIEZOELEKTRISCHE KERAMISCHE MEHRSCHICHTMANDLER UND VERFAHREN ZU DEREN HERSTELLUNG
Title (fr)
TRANSDUCTEUR CERAMIQUE PIEZO-ELECTRIQUE A MULTIPLES COUCHES ET PROCEDE DE FABRICATION
Publication
Application
Priority
- US 9713025 W 19970724
- US 68649696 A 19960725
Abstract (en)
[origin: WO9805080A1] A method of fabricating a multilayer piezoelectric transducer. The method involves net-shape molding from a mixture of a piezoelectric or electrostrictive ceramic powder material and an organic binder a unitary piezoelectric or electrostrictive ceramic body. The body (21) includes a top, four sides normal to the top, and a base interconnecting the sides. First and second cavities are molded into at least one side to divide the ceramic body into a plurality of ceramic layers disposed generally parallel to the top. The first cavities alternate with the second cavities in the ceramic body. Each ceramic layer except an uppermost and a lowermost ceramic layer is joined at one edge to one ceramic layer adjacent thereto by a first ceramic bridge and at the same or a different edge to another ceramic layer adjacent thereto by a second ceramic bridge.
IPC 1-7
IPC 8 full level
H01L 41/083 (2006.01); H01L 41/257 (2013.01); H01L 41/27 (2013.01); H01L 41/293 (2013.01); H01L 41/297 (2013.01); H01L 41/43 (2013.01)
CPC (source: EP)
H10N 30/045 (2023.02); H10N 30/05 (2023.02); H10N 30/063 (2023.02); H10N 30/067 (2023.02); H10N 30/097 (2023.02); H10N 30/50 (2023.02)
Citation (search report)
- [XA] GB 2242312 A 19910925 - HITACHI METALS LTD [JP]
- [A] EP 0683534 A1 19951122 - FRANCE ETAT [FR]
- [DA] US 5340510 A 19940823 - BOWEN LESLIE J [US]
- [A] PATENT ABSTRACTS OF JAPAN vol. 018, no. 161 (E - 1526) 17 March 1994 (1994-03-17) & US 5633554 A 19970527 - KAJI TAKATOSHI [JP]
- See references of WO 9805080A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9805080 A1 19980205; EP 1016145 A1 20000705; EP 1016145 A4 20020508
DOCDB simple family (application)
US 9713025 W 19970724; EP 97939345 A 19970724