Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2006-06-27
2006-06-27
Budd, Mark (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S324000
Reexamination Certificate
active
07067961
ABSTRACT:
There is disclosed a piezoelectric/electrostrictive film device which has a flexural displacement and durability equal to or more than those of a related-art piezoelectric/electrostrictive film device and which has a remarkably high resonance frequency and which is superior in high-speed response. The piezoelectric/electrostrictive film device comprises: a substrate formed of ceramic; and a piezoelectric/electrostrictive operation portion including a lower electrode, piezoelectric/electrostrictive layer, and upper electrode which are successively stacked on the substrate and including a projecting end of the piezoelectric/electrostrictive layer with which an upper surface of the lower electrode and a lower surface of the upper electrode are coated, and a projecting portion of the piezoelectric/electrostrictive layer is a coupling member constituted of a hybrid material in which inorganic particles are scattered in a matrix of a polymer compound, and is coupled to the substrate.
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U.S. Appl. No. 10/463,163, filed Jun. 17, 2003, Takahashi et al.
Bessho Yuki
Kobayashi Nobuyuki
Murasato Masahiro
Takahashi Nobuo
Budd Mark
Burr & Brown
NGK Insulators Ltd.
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