Title:
PIEZO ACTUATOR
Document Type and Number:
WIPO Patent Application WO2004019425
Kind Code:
A3
Abstract:
The invention relates to a piezo actuator, for example, for actuating a mechanical part, according to which the piezo actuator is provided with a multilayer structure consisting of piezo layers (2) and can be subjected to the action of electric voltage in a piezoelectrically active area (A) via inner electrodes (3, 4) arranged between the layers. At least one inactive area (B, C) is provided in the layer structure of the piezo actuator (1). This area (B, C) is made without inner electrodes and from a material whose mechanic and thermal properties correspond to the properties of the active area (A) including the combination of the interaction of the material of the piezo layers (2) and of the inner electrodes (3, 4).
Inventors:
SUGG BERTRAM (DE)
Application Number:
PCT/DE2003/001810
Publication Date:
July 22, 2004
Filing Date:
June 03, 2003
Export Citation:
Assignee:
BOSCH GMBH ROBERT (DE)
SUGG BERTRAM (DE)
SUGG BERTRAM (DE)
International Classes:
F02M51/06; F02M51/00; H01L41/083; H01L41/187; (IPC1-7): H01L41/083
Domestic Patent References:
| WO2001091198A1 | 2001-11-29 |
Foreign References:
| DE4107158A1 | 1991-09-12 | |||
| EP0603835A1 | 1994-06-29 | |||
| DE19753930A1 | 1999-06-10 | |||
| DE19928178A1 | 2000-08-10 |
Other References:
See also references of EP 1530807A2
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